JP2009132474A - Mounting device of climbing frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting device of a climbing frame capable of cutting down labor hours and costs required for reinforcement work of a steel framed beam associated with setting of a climbing frame. <P>SOLUTION: A first mounting device 30 of the invention is provided with a connecting means 40 connecting and fixing outriggers to the steel framed beam, and a plurality of jacks 50 detachably interposed at regions positioned below the outriggers between upper and lower flanges constituting the steel framed beam. Moreover, a second mounting device 31 of the invention is provided with the connecting means 40, and a plurality of reinforcing units 60 detachably interposed at regions positioned below the outriggers between the upper and lower flanges constituting the steel framed beam. The reinforcing unit 60 consists of a height adjusting unit 61 formed by accumulating a plurality of box-like steel plates on the lower flange, and a jack 65 interposed between the height adjusting unit 61 and the upper flange. The number of the box-like steel plates is adjustable according to the distance between the upper and lower flanges. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for attaching a climbing mount supporting a tower crane to a steel beam of a building.

  Conventionally, a crane mast climbing method and a floor climbing method are known as tower cranes used for construction of high-rise and super-high-rise buildings. The crane mast climbing type tower crane is constructed such that the foundation of the crane is constructed on the external ground of the building, and the crane main body is climbed by extending the crane mast upward as the building construction progresses. On the other hand, a tower crane of a floor climbing system is supported by a building frame inside the building, and as a whole, the whole is rearranged upward as the building work progresses. Among these, the crane mast climbing method requires a long crane mast that extends over the entire length of the building and a horizontal stay to support it, which increases costs, and requires a ground yard for crane installation. There are restrictions such as shape. For this reason, when constructing a super high-rise building in an urban area, the floor climbing method is often adopted.

  In the above-mentioned floor climbing method, a climbing mount (hereinafter referred to as “climbing mount” for short) is installed between the main beams or the temporary beams constituting the building frame, and the crane mast portion of the tower crane is placed on the climbing mount. The tower crane is supported on the building frame by mounting the building, and the building is constructed by lifting the pillars and beam members on the upper floor (see, for example, Patent Document 1).

JP-A-8-59180

  By the way, since the vertical load of a tower crane is very large, if the steel beam of the building frame is used as it is, it is often impossible to support these loads. For this reason, the beam is usually reinforced by installing a stiffener or other reinforcing material between the upper and lower flanges of the steel beam on which the climbing mount is installed so as to withstand the load of the tower crane. However, in this case, it takes time to work such as welding to attach the reinforcing material between the flanges, and to remove the reinforcing material after changing the crane, and the removed reinforcing material is not reused and only becomes iron scrap. Therefore, it was necessary to carry out the work of carrying out these iron scraps to the outside, and considerable labor and cost were required for installing, removing and carrying out the reinforcing material.

  Moreover, since the beam formation differs depending on the building to be constructed, it is necessary to prepare a reinforcing material suitable for the beam formation of the steel beam on which the climbing mount is installed, and there is a problem that the versatility is lacking.

  An object of this invention is to provide the frame reinforcement apparatus which can reduce the effort and cost which are required for the reinforcement work of the steel beam accompanying installation of a climbing mount in view of said point.

  According to a first aspect of the present invention, there is provided a climbing gantry mounting apparatus comprising: a base for supporting a crane mast of a tower crane; and an outrigger projecting at both ends of the base; A device for attaching to a beam, the device being located below the outrigger between a connecting means for connecting and fixing the steel beam and the outrigger placed on the steel beam, and an upper and lower flange constituting the steel beam And a plurality of jacks detachably mounted on the part.

  According to a second aspect of the present invention, there is provided a climbing gantry mounting apparatus comprising: a base that supports a crane mast of a tower crane; and an outrigger that projects from both ends of the base. The steel beam is attached to the steel beam, the connecting means for connecting and fixing the steel beam and the outrigger placed on the steel beam, and the upper and lower flanges constituting the steel beam, below the outrigger. A plurality of reinforcing units that are detachably mounted on the position of the position, and the reinforcing unit is formed by stacking a plurality of box-shaped steel plates on the lower flange, and the height adjusting unit And a jack interposed between the upper flange and the number of the box-shaped steel plates can be adjusted according to the distance between the upper and lower flanges.

  According to a third aspect of the present invention, there is provided the climbing frame mounting apparatus according to the second aspect, wherein the box-shaped steel plates adjacent to each other of the height adjusting unit are connected to each other by bolts.

  According to the climbing gantry mounting apparatus of the present invention, a plurality of jacks are interposed between the upper and lower flanges of the steel beam supporting the outrigger of the climbing gantry, and these jacks act as a reinforcing member for the steel beam. There is no need to install a stiffener or other reinforcing material as in the prior art. In addition, when the tower crane is replaced, it can be easily removed from the steel beam by retracting the jack. As a result, it is possible to reduce the labor required for the work of attaching the reinforcing material between the flanges of the steel beam and the work of removing them. Moreover, since the removed jack can be reused, iron scrap is not generated every time the crane is replaced, unlike the conventional case where a stiffener or the like is used as a reinforcing material. Accordingly, it is not necessary to carry out the iron scrap to the outside. Furthermore, by adjusting the height by extending the jack according to the distance between the upper and lower flanges of the steel beam, it becomes possible to reinforce the steel beam regardless of the distance between the upper and lower flanges. There is no need to prepare a reinforcing material suitable for the steel beam.

  Exemplary embodiments of a first climbing gantry mounting apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a view showing a state in which a climbing gantry 20 is installed on a steel beam 1 on a predetermined floor in a building under construction (not shown), and a tower crane 10 is supported on the climbing gantry 20. FIG. 2 is an enlarged view of an installation portion of the climbing mount 20 shown in FIG. A tower crane 10 shown in FIG. 1 includes a crane main body 11 and a crane mast 12, and operates a climbing mechanism (not shown) mounted on the crane main body 11 along with the progress of the frame construction. 11 is a floor-climbing type in which the entire crane is rearranged upwards by raising it alternately. The steel beam 1 to which the climbing gantry 20 is attached is H-shaped steel composed of an upper and lower flange and a web. In the present embodiment, a permanent beam is used as the steel beam 1.

  As shown in FIG. 2, the climbing gantry 20 includes a pair of bases 21a and 21b that support a crane base 13 fixed to the bottom of the crane mast 12, and a vertical member 22 that connects the bases 21a and 21b. Each base 21a, 21b is composed of outriggers 23a, 23b, 23c, 23d projecting from both ends. As shown in FIG. 2, the outrigger 23a and the outrigger 23c are placed on the N-5 floor steel beam 1a, while the outrigger 23b and the outrigger 23d are placed on the steel beam 1b facing the steel beam 1a. ing.

  Although not clearly shown in FIG. 2, the outriggers 23a, 23b, 23c, and 23d are provided to be extendable at both ends of the bases 21a and 21b. That is, when supporting the bases 21a and 21b on the steel beam 1, the outriggers are protruded from both ends of each base by driving an actuator (not shown), while the tower crane 10 is climbed. The outriggers are configured to be retracted into the bases by driving the actuators. Moreover, what constituted the outriggers 23a, 23b, 23c, and 23d so that rotation in a horizontal surface with respect to the bases 21a and 21b is also applicable. In the case of this type, when supporting the bases 21a and 21b on the steel beam 1, the actuator is driven to rotate the outrigger to the open position so that the outrigger protrudes, while the tower crane 10 is climbed. When performing, by driving the actuator, the outrigger is rotated 90 ° with respect to the base from the position protruding outward and disposed at the position folded inward.

  As shown in FIG. 2, the outriggers 23a, 23b, 23c, and 23d placed on the steel beam 1 are respectively attached to the climbing gantry mounting device 30 according to the present embodiment (hereinafter referred to as “mounting device”). ) And fixedly connected to the steel beam 1. 3 is a view of the state in which the outrigger 23a is attached to the steel beam 1a in FIG. 2 as viewed from the direction of arrow A, and FIG. 4 is a side view of FIG.

  The attachment device 30 according to the present embodiment includes a plurality of releasably interposed connecting means 40 for connecting and fixing the outrigger 23a and the steel beam 1a, and the upper flange 2 and the lower flange 4 constituting the steel beam 1a. The jack 50 is configured.

  The connecting means 40 includes an upper support member 41, a lower support member 42 and a bolt 43. The upper support member 41 is a plate-like metal fitting having a dimension larger than the length in the width direction of the outrigger 23a, and is installed on the upper surface of the outrigger 23a along the width direction of the outrigger 13a. In the present embodiment, two upper support members 41 are installed at a predetermined interval. The lower support member 42 is a plate-shaped metal fitting having a dimension larger than the length in the width direction of the lower flange 4 of the steel beam 1a, and is arranged on the lower surface of the lower flange 4 of the steel beam 1a in the width direction of the steel beam 1a. It is installed along. In the present embodiment, two lower support members 42 are installed at a predetermined interval. The upper fixing member 41 and the lower fixing member 42 are provided with bolt insertion holes (not shown). As the bolt 43, an anchor bolt having a length that is longer than the sum of the height of the outrigger 13a and the height of the steel beam 1a (beam formation) is applied.

  The connecting means 40 having the above configuration spans the bolts 43 between the upper fixing member 41 and the lower fixing member 42 through the bolt insertion holes described above, and tightens them with the nuts 44, thereby connecting the outrigger 13a and the steel beam 1 to each other. Insert and connect and fix both. The connecting means 40 connects and fixes the outrigger 13a to the steel beam 1a, and also has a role to counter the pulling force by the tower crane when the frame construction is performed.

  The jack 50 is detachably interposed in a portion located below the outrigger 13a between the upper flange 2 and the lower flange 4 of the steel beam 1a, and pushes the upper and lower flanges by extending itself. That is, the jack 50 bears a part of the vertical load of the tower crane 10 when the tower crane 10 is supported on the climbing mount 20, thereby preventing the steel beam 1 a from being crushed by the load of the tower crane 10. It has a role as a reinforcing material. As the jack 50, a general jack having a size that fits between the upper and lower flanges of the steel beam 1a, such as a screw-type jack or a hydraulic jack, can be applied. , 100t specifications, etc. are appropriately selected. In the present embodiment, as shown in FIGS. 3 and 4, a screw-type jack composed of a pedestal 51, a jack body 52, a lifting bolt 53, and a top plate 54 is applied, and the web 3 of the steel beam 1a is applied. A total of four screw-type jacks are interposed, two each of which are sandwiched. Although the distance between the upper and lower flanges 2 and 4 of the steel beam 1a differs depending on the building or the like, the height is adjusted by raising and lowering the lifting bolt 53 of the jack 50 according to the distance between the upper and lower flanges.

  In the above description, the case where the outrigger 23a is attached to the steel beam 1a has been described. However, the other outriggers 23b, 23c, and 23d are similarly attached to the steel beam 1 using the attachment device 30.

  Next, a procedure for attaching and removing the climbing mount 20 to the steel beam 1 using the attachment device 30 will be described as the tower crane 10 is climbed.

  As shown in FIG. 1, the crane main body is constructed up to a predetermined floor (for example, the Nth floor) with the tower crane 10 supported on the climbing mount 20 attached to the steel beam 1 on the N-5th floor. A crane body receiving beam (not shown) for temporarily supporting 11 is installed between the steel beams 1 on the N floor. Next, the climbing mechanism of the tower crane 10 is operated to lower the crane body 11 with respect to the crane mast 12, and the crane body 11 is temporarily supported on the above-described crane body receiving beam.

  Connecting means for connecting the steel beam 1 to the outriggers 23a, 23b, 23c, and 23d of the climbing mount 20 installed on the N-5 floor in a state where the crane body 11 is temporarily supported on the N-level crane body receiving beam. The bolting of 40 is released, and the connecting means 40 is removed. And the jack 50 interposed between the upper and lower flanges of the steel beam 1 is shrunk and the jack is removed. After the attachment device 30 is removed, the outriggers 23a, 23b, 23c, and 23d are retracted into the base, and the climbing mechanism is operated to raise the crane mast 12 and the climbing mount 20 relative to the crane body 11.

  Here, a jack 50 is interposed in advance between the upper and lower flanges of the steel beam 1 on the floor (for example, the N-2 floor) where the tower crane 10 is replaced. This jack 50 can reuse what was used on the N-5 floor. After raising the climbing mount 20 to the (N-2) th floor, the outriggers 23a, 23b, 23c, and 23d are protruded again and placed on the steel beam 1 on the (N-2) th floor. Next, the outriggers 23 a, 23 b, 23 c, 23 d and the steel beam 1 are connected and fixed using the connecting means 40. Thereafter, the crane main body 11 is raised with respect to the crane mast 12 by the climbing mechanism, and the crane main body receiving beam on the Nth floor is removed to complete the climbing.

  As described above, according to the attachment device 30 of the present embodiment, a plurality of jacks 50 are interposed between the upper and lower flanges 2 and 4 of the steel beam 1 that support the outriggers 23a, 23b, 23c, and 23d of the climbing mount 20. Since the jack 50 acts as a reinforcing member for the steel beam, the steel beam 1 is prevented from being crushed by the load of the tower crane 10, so that it is necessary to install a reinforcing material such as a stiffener as in the past. Disappear. Further, when the tower crane 10 is replaced, it can be easily detached from the steel beam 1 by shrinking the jack 50. As a result, it is possible to reduce the labor required for the work of attaching the reinforcing material between the flanges of the steel beam 1 and the work of removing them.

  In addition, since the removed jack 50 can be reused, iron scrap does not occur every time the crane is replaced as in the conventional case where a stiffener or the like is used as a reinforcing material. Accordingly, it is not necessary to carry out the iron scrap to the outside.

  Furthermore, the steel beam 1 is reinforced regardless of the distance between the upper and lower flanges 2 and 4 by extending the jack 50 according to the distance between the upper and lower flanges 2 and 4 of the steel beam 1 and adjusting the height. It becomes possible.

  Next, a preferred embodiment of the second climbing gantry mounting apparatus of the present invention will be described. In addition, about the structure same as the 1st attachment apparatus mentioned above, the same code | symbol is used and the description is abbreviate | omitted.

  5 and FIG. 6 show that the outrigger 23a of the base 21a shown in FIG. 2 is attached to the steel beam 1 by using the second climbing mount mounting device 31 (hereinafter referred to as “mounting device 31”). It is a side view which shows the state connected and fixed. In the first mounting device 30 described above, the jack 50 is interposed between the upper and lower flanges of the steel beam 1. However, the mounting device 31 of the present embodiment replaces the jack 50 and is described below as a reinforcing unit. The first mounting apparatus 30 is different in that 60 is interposed between the upper and lower flanges. Other configurations are the same as those of the first attachment device 30.

  As shown in FIGS. 5 and 6, the attachment device 31 is detachable between the connecting means 40 for connecting and fixing the outrigger 23a and the steel beam 1a, and the upper flange 2 and the lower flange 4 constituting the steel beam 1a. A plurality of reinforcing units 60 interposed are provided.

  As shown in FIGS. 5 and 6, the reinforcing unit 60 is interposed between the upper flange 2 and the lower flange 4 of the steel beam 1a and is located below the outrigger 13a. 4 and a jack 65 installed between the height adjusting unit 61 and the upper flange 4. The reinforcement unit 60 bears a part of the vertical load of the tower crane 10 when the tower crane 10 is supported on the climbing mount 20 like the jack 50 of the first mounting device 30 described above. It has a role as a reinforcing material for preventing the steel beam 1a from being crushed by a load of. In the present embodiment, a total of four reinforcing units 60 are disposed, two each of which is sandwiched between the webs 3 of the steel beam 1a.

  The height adjustment unit 61 is formed by stacking a plurality of box-shaped steel plates 62. As shown in FIGS. 5 and 6, the height adjustment unit 61 can adjust the number of box-shaped steel plates 62 stacked on the lower flange 4 according to the distance between the upper and lower flanges of the steel beam 1. FIG. 7 is an enlarged view of the installation portion of the reinforcing unit 60 in FIG. 6, and FIG. 8 is a perspective view of the box-shaped steel plate 62. As shown in FIG. 8, the box-shaped steel plate 62 includes a short H-shaped steel material 63 composed of an upper flange 63 a, a web 63 b, and a lower flange 63 c and an upper and lower flange 63 a, covering both sides of the H-shaped steel material 63. It is composed of two cover plates 64 fixed to both end faces of 63c.

  The jack 65 is interposed between the uppermost box-shaped steel plate 62 of the height adjustment unit 61 and the upper flange 2 of the steel beam 1, and extends the height adjustment unit 61 (that is, the lower flange 4) by extending itself. And the upper flange 2 are pushed. As the jack 65, a screw-type jack or a hydraulic jack smaller than the jack 50 applied in the first mounting device 30 described above can be applied. Depending on the load of the tower crane 10, a 25t specification, a 50t specification, A 100t specification or the like is appropriately selected and used. In the present embodiment, as shown in FIG. 7, a screw-type jack composed of a pedestal 66, a jack body 67, lifting bolts 68 and a top plate 69 is applied. Reference numeral 68a denotes a rotation rod insertion hole for rotating the lifting bolt 68 to expand and contract the jack 65.

  When the outriggers 23a, 23b, 23c, and 23d are attached to the steel beam 1 using the attachment device 31 having the above-described configuration, the reinforcing unit 60 is interposed between the upper and lower flanges of the steel beam 1 in advance. That is, after the box-shaped steel plates 62 are stacked on the lower flange 4 to form the height adjusting unit 61, the jack 65 is disposed between the uppermost box-shaped steel plate 62 and the upper flange 4 of the steel beam 1. The reinforcing unit 60 is interposed between the upper and lower flanges 2 and 4 by raising and lowering the 65 raising and lowering bolts 68. Thereafter, the outriggers 23a, 23b, 23c, and 23d are placed on the steel beam 1, and the steel beam and the outrigger are sandwiched between the upper support member 41 and the lower support member 42 of the connecting means 40, and the upper support member 41 and the lower support member Bolts 43 are laid over 42 to connect and fix them.

  On the other hand, when removing the attachment device 31 to replace the tower crane 10, first, the bolt 43 of the connecting means 40 is removed to release the connection between the outriggers 23a, 23b, 23c, 23d and the steel beam 1, Each outrigger is retracted into the bases 21a and 21b, and the base is raised. Thereafter, the lifting bolt 68 of the jack 65 interposed between the upper and lower flanges of the steel beam 1 is contracted, and the jack 65 and the height adjustment unit 61 are removed from the steel beam 1. The removed reinforcing unit 60 can be reused to reinforce the steel beam 1 on the upper floor to be replaced.

  If necessary, bolt holes may be provided in the upper and lower flanges 63a and 63c of the box-shaped steel plate 62, and the box-shaped steel plates 62 may be connected to each other by a bolt 70 as shown in FIG. Although not shown, the lowermost box-shaped steel plate 62 may be bolted to the lower flange 4 of the steel beam 1. By setting it as the said structure, the reinforcement unit 60 can be more stably arrange | positioned now and the situation where the box-shaped steel plate 62 falls off can be prevented.

  As described above, according to the attachment device 31 of the present embodiment, the plurality of reinforcing units 60 are provided between the upper and lower flanges 2, 4 of the steel beam 1 that supports the outriggers 23 a, 23 b, 23 c, 23 d of the climbing mount 20. By interposing and causing the reinforcing unit 60 to act as a reinforcing member for the steel beam, the steel beam 1 is prevented from being crushed by the load of the tower crane 10, so that a reinforcing material such as a stiffener is installed as in the past. There is no need. Further, when the tower crane 10 is replaced, the jack 65 of the reinforcing unit 60 can be easily removed from the steel beam 1 by retracting. As a result, it is possible to reduce the labor required for the work of attaching the reinforcing material between the flanges of the steel beam 1 and the work of removing them.

  Further, the attachment device 31 of the present embodiment is configured to adjust the number of stacked sheet steel plates 62 of the height adjustment unit 61 according to the distance between the upper and lower flanges of the steel beam. Accordingly, it is more versatile than the first mounting device 30 in which only the jack is interposed between the upper and lower flanges of the steel beam, and can be applied to any steel beam. As a result, there is no need to prepare a reinforcing material suitable for the beam formation of the steel beam each time as in the prior art.

  Further, the removed reinforcing unit 60 (height adjustment unit 61 and jack 65) can be reused at the time of replacement. In addition, since the height adjustment unit 61 is composed of a plurality of box-shaped steel plates 62, it can be easily carried to the upper floor.

  In the above-described embodiment, the permanent beam is used as the steel beam for mounting the outrigger of the climbing gantry. However, a temporary beam spanned between the permanent beams may be used.

It is a figure which shows the state which supported the tower crane on the climbing mount frame attached to the steel beam of the building. It is a perspective view which shows an example of the state which connected and fixed the outrigger of the climbing mount with respect to the steel beam using the 1st attachment apparatus of this invention. It is the figure which looked at the attachment apparatus shown in FIG. 2 from the arrow A direction. FIG. 4 is a side view of FIG. 3. It is a side view which shows an example of the state which connected and fixed the outrigger of the climbing mount with respect to the steel beam using the 2nd attachment apparatus of this invention. It is a side view which shows an example of the state which connected and fixed the outrigger of the climbing mount with respect to the steel beam using the 2nd attachment apparatus of this invention. It is the figure which expanded and showed the reinforcement unit in the 2nd attachment apparatus of this invention. It is a perspective view of the box-shaped steel plate which comprises the reinforcement unit shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steel beam 2 Upper flange 3 Web 4 Lower flange 10 Tower crane 11 Crane main body 12 Crane mast 13 Crane base 20 Climbing mount 21a, 21b Base 22 Vertical member 23a, 23b, 23c, 23d Outrigger 30, 31 Climbing mount attachment device DESCRIPTION OF SYMBOLS 40 Connection means 41 Upper support member 42 Lower support member 43 Bolt 44 Nut 50 Jack 51 Base 52 Jack main body 53 Lifting bolt 54 Top plate 60 Reinforcement unit 61 Height adjustment unit 62 Box-shaped steel plate 63 H-type steel material 64 Cover plate 65 Jack 66 Base 67 Jack body 68 Lifting bolt 69 Top plate 70 Bolt

Claims (3)

A device for attaching a climbing mount comprising a base supporting a crane mast of a tower crane and outriggers protruding from both ends of the base to a steel beam of a building,
A connection means for connecting and fixing the steel beam and the outrigger placed on the steel beam;
A plurality of jacks detachably interposed between the upper and lower flanges constituting the steel beam, at a portion located below the outrigger;
A climbing gantry mounting device characterized by comprising: A device for attaching a climbing mount comprising a base supporting a crane mast of a tower crane and outriggers protruding from both ends of the base to a steel beam of a building,
Connecting means for connecting and fixing the steel beam and the outrigger placed on the steel beam;
A plurality of reinforcing units that are detachably interposed between the upper and lower flanges constituting the steel beam and are located below the outrigger,
The reinforcing unit is
It consists of a height adjustment unit formed by stacking a plurality of box-shaped steel plates on the lower flange, and a jack interposed between the height adjustment unit and the upper flange. Accordingly, the climbing frame mounting device is characterized in that the number of the box-shaped steel plates can be adjusted.   The climbing mount attachment device according to claim 2, wherein the box-shaped steel plates adjacent to each other of the height adjustment unit are connected to each other by bolts.

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