JP2015203239A - Vertically movable mobile scaffold for assembling temporary overhead landing bridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertically movable scaffold that allows easy installation of a work platform on multiple bearing piles, when assembling a landing bridge for constructing an overpass, etc.SOLUTION: A vertically movable scaffold 1 is used when installing a landing bridge for construction work, and is vertically movable along a bearing pile 70a of the landing bridge. The vertically movable scaffold 1 comprises: a fixing platform 2 having a horizontal column fitting surface and fixed at a reference position of the adjacent bearing piles 70a; an extendable column 4 installed on an upper surface 6 of the fixing platform 2, the column 4 having a bearing support part 3 connectable to a surface of the bearing pile, and extendable by being connected upward; a climbing device 11 installed on each of the adjacent columns 4, the climbing device having a scaffold base 10 and being movable vertically along the column 4; connecting scaffold members 14, 15 for connecting the climbing devices 11, the connecting scaffold members forming an intermediate scaffolding 14 between the scaffold bases 10; and a horizontal beam 4u connecting top ends of the adjacent columns 4 and may be hung from above.

Description

  The present invention relates to a working scaffold unit used, for example, for assembling a pier for elevated road construction.

  In the Japanese archipelago, which consists of sloped land where there is a lot of surface undulations even if the land is mostly mountainous or plain, in order to secure the construction level in the construction of viaducts such as highways and railways, In many cases, it is essential to install a pier. It is necessary to install a temporary scaffolding on the support piles for the assembly work of the construction pier, which is a work at a high place. Specifically, as shown in FIG. 11 as a conventional example, the construction pier is assembled by a plurality of support piles 70a, 70b, at predetermined intervals in both the longitudinal direction and the width direction of the construction pier. 70c is erected on the ground G, and the horizontal pile 71 and the diagonal piece 72 are suspended between the support piles 70a and 70b adjacent in both the width and the longitudinal direction, and the vertical girder 74 is suspended above the support pile 70a, After connecting and reinforcing 70b, the crossing girder 75 and the lining board 73 are installed on the longitudinal girder 74.

  Here, since the horizontal joint material 71 and the diagonal joint material 72 arranged between the support piles 70a and 70b are provided at a plurality of different heights of the support pile 70 at every predetermined interval, the support pile 70a per one. , 70b, a temporary scaffold for work is required at each of the locations where the joint members 71, 72 are provided. For this reason, as shown in FIG. 11, a plurality of temporary scaffolds 76 attached to only one place where work is required has been installed on one support pile 70a, 70b.

  However, the temporary scaffold 76 needs to be relocated (attached / removed) according to the number of joint members 71, 72 installed every time the support piles 70a, 70b are erected, which is time consuming and expensive. There is. In addition, since the temporary scaffold 76 is a partially installed scaffold, another lifting means is required when the worker moves, or when assembling, dismantling, and moving work, and it is difficult to ensure safety. There is.

  Moreover, as another example of the temporary scaffold, as shown in FIG. 12, every time the support piles 70a and 70b are erected, the support piles 70a and 70b are continuously configured from the ground to a height at which the work of the support piles 70a and 70b is necessary. This is done by installing a framework scaffold 77.

  The framework scaffold 77 is continuously configured in the height direction from the ground, and does not require a separate lifting means when the worker moves, or when assembling, dismantling, or moving work. However, the framework scaffold 77 is originally a temporary scaffold used at a construction site that progresses in the height direction, such as building construction, and is more planar than a construction site that does not require dismantling until the construction is completed. When assembling the construction stage, the assembly and dismantling work is required every time the support piles 70a and 70b are erected, and in addition, a planar space is secured as a place for installing the framework scaffolding in mountainous areas or sloped areas. Since it takes time and money due to the increase in work man-hours due to these, it is not suitable as a temporary scaffold for the purpose of the construction, the equipment scale is excessive, and the installation of the temporary scaffold is very There was a problem that it was a complicated task.

  In order to eliminate the complexity of installing and dismantling such work scaffolds, Patent Document 1 (Japanese Patent Laid-Open No. 7-259322), Patent Document 2 (Japanese Patent Laid-Open No. 2009-121108), etc. It has been known.

  The lifting scaffold described in Patent Literature 1 is a lifting scaffold in which the traveling platform is configured to be able to change the vertical position along the scaffold mast, and the scaffold mast is configured to be extendable. .

  In Patent Document 2, in order to solve the problem of installing a framework scaffold according to the concrete placement height of the scaffold, the rebar mounted on the lifting scaffold is lifted to a predetermined height and then suspended by a hoist. An assembly method for lowering and assembling a reinforcing bar to a high structure is disclosed.

JP 7-259322 A JP 2009-121108 A

  However, the device of Patent Document 1 is a lifting scaffold provided to support a building such as a house, and is assembled to be attached to different support piles along the longitudinal direction, such as a pier assembly for elevated road construction. In addition, since it is necessary to repeatedly perform disassembly, the handling is complicated, and it is difficult to ensure safety during installation and disassembly.

  In addition, since the device of Patent Document 2 has a structure in which a hoist is previously installed on the upper part of a high structure and thereby hangs a reinforcing bar, it is necessary to previously install a mast for moving the lifting scaffold, There is a problem that it is not suitable for pier assembly that requires repeated installation and dismantling at different installation positions, and it is difficult to ensure safety.

  Therefore, the technical problem to be solved by the present invention is to provide an elevating scaffold capable of easily installing work scaffolds on a large number of support piles such as pier assembly for elevated road construction.

  In order to solve the above technical problem, the present invention provides a lifting scaffold having the following configuration.

The lifting scaffold of the present invention is used in the construction work of the construction pier, and is a lifting scaffold that can be lifted and lowered along the supporting pile of the pier,
A fixed base fixed to a reference position of the support pile and having a column mounting portion;
A support column connected to the fixed base in parallel to the support pile and having a support support portion connected to the support pile, and a column that can be extended by being connected upward,
A climbing device that is provided on the support and capable of raising and lowering the support having a scaffolding base on the upper surface;
A suspension member connected to the support column and capable of hanging the support column together with the climbing device from above.

The support columns are respectively provided on the fixed mounts fixed to the adjacent support piles, respectively.
A connecting scaffold member that connects the climbing devices that are provided on the adjacent struts to be driven synchronously and forms an intermediate scaffold between the respective scaffolding bases,
By providing an upper horizontal beam provided at the upper end of the adjacent struts and having the suspension member, the two struts can be connected and moved as a pair.

The strut includes an engaging portion that can be locked by the climbing device at predetermined intervals.
The climbing device includes a locking portion disposed above and below the predetermined interval, and a driving device that expands and contracts the interval between the upper and lower locking portions.

  The strut is composed of a base strut and a connection strut, the base strut is installed on the fixed base, and the connection strut is connected to an upper end so that the entire length of the strut can be extended. ing.

  According to the present invention, since the fixed mount can be set to a reference level of height, the support structure of the support can be simplified by attaching the support to the fixed mount, and the support can be connected vertically. By extending, it is possible to improve the accuracy of the height position of the scaffold with respect to the support column. In addition, because it has a climbing device that moves up and down with respect to the support column, work safety can be ensured. Further, for movement to other support piles, the support column and climbing device are suspended and moved together. Therefore, the transfer to the support pile to be installed can be facilitated, and the safety when the scaffold is dismantled can be secured.

It is a figure which shows typically the structure of the raising / lowering scaffold concerning 1st Embodiment of this invention. It is a partial expanded front view which shows the structure of the raising / lowering scaffold of FIG. It is a partial expanded side view which shows the structure of the raising / lowering scaffold of FIG. It is a partial enlarged plan view which shows the structure of the raising / lowering scaffold of FIG. It is the elements on larger scale of the A section of FIG. It is a schematic diagram which shows the assembly procedure of the raising / lowering scaffold of FIG. 1, and is a figure which shows the state which attaches a fixed mount to a support pile. It is a schematic diagram which shows the assembly procedure of the raising / lowering scaffold of FIG. 1, and is a figure which shows the state which attaches a base support | pillar and a raising / lowering scaffold unit to a fixed mount. It is a schematic diagram which shows the assembly procedure of the raising / lowering scaffold of FIG. 1, and is a figure which shows the state which attaches a connection support | pillar to a support | pillar. It is a schematic diagram which shows the assembly procedure of the raising / lowering scaffold of FIG. 1, and is a figure which shows the state which the raising / lowering scaffold unit raised to the support | pillar upper limit, (a) is a front view, (b) shows a side view. It is a schematic diagram which shows the assembly procedure of the raising / lowering scaffold of FIG. 1, and is a figure which shows the state which removes the assembled raising / lowering scaffold from a support pile. It is a schematic diagram which shows arrangement | positioning of the temporary scaffold of the conventional construction jetty. It is a schematic diagram which shows arrangement | positioning of the frame scaffold of the conventional construction jetty.

  Hereinafter, a lifting scaffold according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram showing a configuration of a lifting scaffold according to an embodiment of the present invention, where (a) is a configuration viewed from the width direction, and (b) is a configuration viewed from the longitudinal direction. The lifting scaffold 1 according to the present embodiment is used for assembling the construction jetty 100. As shown in FIGS. 1A and 1B, the construction pier 100 includes support piles 70 a and 70 b that are erected on the ground G side by side in the longitudinal direction and the width direction of the stage. As shown in FIG. 1B, the existing support pile 70 b is provided with a horizontal joint material 71 and a lining plate 73, and equipment such as the crane 101 is arranged on the lining plate 73. The elevating scaffold 1 constitutes a scaffold for performing the work of attaching these members to the newly installed support pile 70a. In addition, although the diagonal joining material (refer FIG. 11) is also provided as a joining material, description is abbreviate | omitted in FIG.

  The lifting / lowering scaffold 1 includes a fixed mount 2 provided on each of a pair of adjacent support piles 70a, and a support support portion 3 that is installed on the upper surface of each fixed mount 2 and can be connected to the surface of the support pile 70a. The support 4 is extendable by being connected upward, and the lifting and lowering scaffold unit 5 is provided so as to be movable up and down as indicated by an arrow 90 along each support.

  FIG. 2 is a partially enlarged view showing the configuration of the lifting scaffold of FIG. As shown in FIGS. 1 and 2, the fixed mount 2 is fixed in the vicinity of the lower portion of a newly installed support pile 70 a, and the upper surface thereof serves as a column attachment surface 6. The column mounting surface 6 is a height reference for column mounting. The support mounting surface 6 is provided with a fixing portion 7 for fixing the support 4 (base support 4a), and the lower end of the support support 4a is inserted and fixed.

  A gantry connecting member 2 a is provided between the fixed gantry 2 to prevent the positional displacement of the fixed gantry 2.

  The support column 4 includes a foundation support column 4a attached to the fixed mount 2 and a connection support column 4b connected to the upper side of the foundation support column. The foundation support column 4a and the connection support column 4b have joints that can be connected to each other at both upper and lower ends, and the upper ends of the foundation support column 4a and the connection support column 4b are configured to be connected to the lower end portion of another connection support column 4b. ing. The connecting column 4b is extended by connecting the joint at the lower end to the joint provided above the basic column 4a and the connecting column 4b. In this embodiment, the foundation support column 4a and the connection support column 4b are of the same configuration having the same joint configuration, but the foundation support column 4a is connected to the fixed support frame 2 in order to strengthen the connection. Different joints may be used.

  As the joints provided on the foundation struts 4a and the connection struts 4b, the foundation struts 4a and the connection struts 4b are of a fitting type so as not to be displaced in the horizontal direction and the vertical direction, and fixed so as not to fall off. What can be used is preferably used.

  An upper horizontal beam 4 u is provided at the upper end of the column 4 to connect the pair of columns 4. The upper horizontal beam 4u is provided with a suspension wire 4w that integrally suspends a column fixed to the upper horizontal beam 4u by the crane 101. The hanging wire 4w corresponds to the hanging member of the present invention.

  Moreover, the support support part 3 is provided in the opposing surface with the support pile 70a of the support | pillar 4, By connecting with the support attachment member 8 provided in the support pile 70a, the support | pillar 4 is firmly fixed to the support pile 70a. (See FIG. 3). In addition, you may fix the support support part 3 to the horizontal joint material 71 provided so that a pair of support pile 70a might be straddled (refer FIG. 4).

  As shown in FIG. 3, each of the basic support pillar 4a and the connecting support pillar 4b is configured to have the same length dimension, and a lock pin insertion hole 9 is provided at a position of a quarter of the length dimension. . The lock pin insertion hole 9 is for locking the climbing device 11 and the support column 4 when the climbing device 11 of the lifting scaffold unit 5 moves up and down as will be described later. Since the lock pin insertion holes 9 are respectively provided at positions that are a quarter of the lengths of the base columns 4a and the connection columns 4b, the pitches of the lock pin insertion holes 9 that are continuous in the vertical direction are all foundations. The strut 4a and the connecting strut 4b are half the length dimension, and the climbing device 11 of the lifting and lowering scaffolding unit 5 is matched to the pin spacing, so that the strut and the climbing device are reliably engaged.

  The lifting and lowering scaffolding unit 5 includes a climbing device 11 connected to the scaffolding base 10, and the column can be moved up and down by the operation of the climbing device 11. The scaffold base 10 is located in the upper part of the climbing apparatus 11 and includes a horizontal tread 12 and a handrail 13, and the operator M gets on and works on the column 70 a. The scaffold platform 10 of the lifting scaffold unit 5 provided on the left and right support columns 4a is not provided with handrails 13 on the side surfaces facing each other, and an operator M can be obtained by connecting an intermediate scaffold 14 described later to the position. Can move between the two.

  In addition, as shown in FIG. 4, you may attach the auxiliary scaffold 10a to the scaffold base 10 so that the circumference | surroundings of the support pile 70a may be enclosed so that it can work | operate over the circumference | surroundings of the support pile 70a.

  The intermediate scaffold 14 connects the left and right scaffold platforms 10 and is configured to be stretchable so that it can be used even if the distance between the scaffold platforms 10 differs according to the separation distance between the support piles 70a. Yes. The intermediate scaffold 14 includes a fixed scaffold 15 and telescopic scaffolds 16 provided at both ends thereof, and adjusts the dimensions of the intermediate scaffold by changing the position of the telescopic scaffold 16 as indicated by an arrow 91. Can do.

  The intermediate scaffold 14 can connect the pair of support pillars 4 by connecting the left and right climbing devices 11 firmly fixed to the left and right support pillars 4, whereby other supporting piles of the lifting scaffold 1 described later. Misalignment between the columns 4 is prevented or suppressed when moving to 70a.

  The climbing device 11 includes an upper frame 17 and a lower frame 18, and both are connected by a climbing cylinder 19. The climbing apparatus 11 is provided with a hydraulic unit 20 for hydraulically operating the climbing cylinder 19.

  The upper frame 17 and the lower frame 18 are configured to be able to change the separation distance in the vertical direction, and the separation distance is controlled by the climbing cylinder 19. In other words, the distance between the upper frame 17 and the lower frame 18 changes as the climbing cylinder 19 expands and contracts.

  The upper frame 17 and the lower frame 18 are each provided with a guide roller 21 that supports the corner portion of the support column 4. The guide roller 21 is configured to be rotatable in the longitudinal direction of the support column 4, and prevents rattling in a direction crossing the axial direction of the support column 4 as the lifting scaffold unit 5 is moved along the support column 4.

  Further, the upper frame 17 and the lower frame 18 are respectively provided with an upper lock pin 22 and a lower lock pin 23 that are inserted into the lock pin insertion holes 9 of the foundation column 4a and the connection column 4b. The upper lock pin 22 and the lower lock pin 23 are configured to be freely movable back and forth, and are fixed to the support column 4 by being inserted into the lock pin insertion holes 9 of the foundation support column 4a and the connecting support column 4b, respectively. To do. The distance between the upper lock pin 22 and the lower lock pin 23 is the same as the pitch of the lock pin insertion holes 9 when the upper frame 17 and the lower frame 18 are close to each other. In this case, the pitch of the lock pin insertion holes 9 is doubled.

  As shown below, the lifting and lowering scaffold unit 5 moves the column 4 up and down by the upper frame 17, the lower frame 18, and the climbing cylinder 19 operating synchronously as shown below. When the lifting scaffold unit 5 is raised, the climbing cylinder 19 is extended with the lower frame 18 fixed to the support column 4, and then the upper frame 17 is fixed to the support column 4. Next, the lower frame 18 is released and the climbing cylinder 19 is reduced.

  On the other hand, when lowering the lifting scaffold unit 5, the climbing cylinder 19 is extended with the upper frame 17 fixed to the support column 4, and then the lower frame 18 is fixed to the support column 4. Next, the upper frame 18 is released and the climbing cylinder 19 is reduced.

  Thus, by operating the left and right climbing apparatuses 11 in synchronization, the position of the lifting and lowering scaffold unit 5 on the column 4 can be freely changed. In addition, the power supply V for driving each climbing apparatus 11 may be arrange | positioned on the ground G, for example, as shown in FIG. 1, and may be made to supply electric power to the climbing apparatus 11 with a cable.

  Next, the assembly procedure of the lifting scaffold 1 according to the present embodiment will be described. First, positioning for attaching the fixed mount 2 to a predetermined height of the support pile 70a erected on the ground G at a predetermined interval is performed. This positioning serves as a reference for installation of the fixed mount 2 and is appropriately determined according to the purpose of the construction so as to be a predetermined height from the ground. Moreover, you may make it attach the mark for positioning to the surface of the support pile 70a by welding etc. to the measured installation reference position. The mark can also be used as a stopper for preventing the fixed gantry 2 from being displaced with respect to the column.

  Next, as shown in FIG. 6, the fixed base 2 is attached to the determined installation reference position. As described above, the fixed mount 2 is attached to the support pile 70a so that the support mounting surface 6 becomes the installation reference position, and the base support 4a is fixed to the fixing portion 7 provided on the support mounting surface 6. And the fixed position of the raising / lowering scaffold unit 5 provided in the foundation support | pillar 4a can be made into a desired position.

  Next, as shown in FIG. 7, the foundation column 4 a and the climbing device 11 are suspended integrally from the crane 101 and connected to the fixed base 2 as indicated by an arrow 92. At this time, the climbing device 11 is fixed to the foundation column 4 a, and both are integrally suspended and connected to the fixed mount 2. After fixing the left and right climbing apparatuses 11, the intermediate scaffold 14 is suspended by the crane 101 and arranged and connected between the scaffolding platforms 10 as indicated by arrows 93. Moreover, the support support part 3 of the foundation support | pillar 4a is connected to the support pile 70a, and the support | pillar 4 is fixed to the support pile 70a.

  Next, as shown in FIG. 8, the connecting column 4 b is attached to the upper end of the column 4. The connecting column 4 b is suspended from the crane 101 while being fixed to the upper horizontal beam 4 u, and is attached to the upper end of the column 4 as indicated by an arrow 94. About the connection pillar 4b of the extension part, while raising the climbing apparatus 11, the support support part 3 is connected to the support pile 70a, and the support pillar 70a of the extension part is fixed to the support pile 70a.

  This operation is repeated, and after the column 4 is extended to a desired height, the lifting and lowering scaffold unit 5 is moved to an arbitrary height to perform the work. FIG. 9 shows a state where the lifting scaffold unit 5 is moved to the uppermost position by performing the work of attaching the horizontal joint material 71 to a predetermined position while raising the lifting scaffold unit 5.

  When the work on the support pile 70a is finished, the lifting scaffold unit is removed from the support pile 70a and moved to another support pile. In this case, with the upper end of the support column 4 fixed to the upper horizontal beam 4u and suspended by the crane 101 as described above, the support support part 3 is supported by the support pile while the lifting scaffold unit 5 is lowered to the lowest position. Remove from 70a (see FIG. 10). At this time, since the upper end of the support column is connected by the upper horizontal beam 4u and the lower end is connected by the lifting / lowering scaffold unit 5, it is possible to prevent the support column 4 from being distorted or misaligned. The support pile 70a can be moved in a suspended state.

  As described above, according to the lifting scaffold 1 according to the present embodiment, the column can be extended by stacking the column on the fixed base attached to the level position of the newly installed or existing support pile, In addition, since the lifting scaffold unit 5 can be fixed at a specific position by the pin insertion hole attached to the support column, the height position of the work scaffold unit can be determined with high accuracy. In addition, by fixing the upper and lower ends of the pair of struts, it is possible to remove and change the installation location as a whole without causing distortion, making it easy to construct and remove the lifting scaffold 1 and safety Sex can be secured.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, the configuration of the climbing device 11 is not limited to the present embodiment, and for example, an elevating mechanism using a rack and pinion may be used.

DESCRIPTION OF SYMBOLS 1 Lifting scaffold 2 Fixed mount frame 2a Mount connection member 3 Support support part 4 Support | pillar 4a Foundation support column 4b Connection support column 4u Upper horizontal beam 5 Lifting scaffold unit 6 Fixed mount upper surface 7 Fixed part 8 Support attachment member 9 Lock pin insertion hole 10 Scaffold base 11 Climbing device 12 Tread 13 Handrail 14 Intermediate scaffold 15 Fixed scaffold 16 Telescopic scaffold 17 Upper frame 18 Lower frame 19 Climbing cylinder 20 Hydraulic unit 21 Guide roller 22 Upper lock pin 23 Lower lock pin 70a, 70b Support pile 71 Horizontal joint 72 Inclined Jointing material 73 Lining board 101 Crane

Claims (4)

It is used in the construction work of the construction pier, and is a lifting scaffold that can be raised and lowered along the support pile of the pier,
A fixed base fixed to a reference position of the support pile and having a column mounting portion;
A support column connected to the fixed base in parallel to the support pile and having a support support portion connected to the support pile, and a column that can be extended by being connected upward,
A climbing device that is provided on the support and capable of raising and lowering the support having a scaffolding base on the upper surface;
An elevating scaffold comprising a suspension member coupled to the support column and capable of hanging the support column from above with a climbing device. The support columns are respectively provided on the fixed mounts fixed to the adjacent support piles, respectively.
A connecting scaffold member that connects the climbing devices that are provided on the adjacent struts to be driven synchronously and forms an intermediate scaffold between the respective scaffolding bases,
The lifting scaffold according to claim 1, further comprising an upper horizontal beam provided at each of upper ends of the adjacent columns and having the suspension member. The strut includes an engaging portion that can be locked by the climbing device at predetermined intervals.
The said climbing apparatus is provided with the latching | locking part arrange | positioned up and down at the said predetermined space | interval, and the drive device which expands / contracts the space | interval of the said upper and lower latching | locking part, It is characterized by the above-mentioned. Lifting scaffold as described in.   The strut is composed of a base strut and a connection strut, the base strut is installed on the fixed base, and the connection strut is connected to an upper end so that the entire length of the strut can be extended. The lifting scaffold according to any one of claims 1 to 3, characterized in that

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