JP4914130B2 - Climbing crane - Google Patents

Description

  The present invention relates to a climbing crane.

  When constructing a building such as a low-rise building, a crane body with a fixed base for supporting the mast is used on the ground, but when constructing a high-rise building, the crane will be adjusted as the construction progresses. Climbing cranes are used in which the main body is sequentially changed to the upper floor of the building.

  FIG. 10 shows an example of a climbing crane used in the construction of a conventional steel structure high-rise building. This climbing crane has a crane 2 at the top of the mast 1 and a main body at the lower end of the mast 1. It has a crane body 4 to which a support frame 3 is fixed. Further, on the outer periphery of the mast 1 at the upper part of the main body support frame 3, there is provided an upper frame 6 that can be fixed to and removed from the mast 1 by inserting / removing the lock pin 5 and can be replaced with the mast 1. A guide mast 8 that can be fixed to and removed from the mast 1 by inserting / removing the lock pin 7 is provided at the upper part of the upper frame 6, and the upper frame 6 and the guide mast 8 can be replaced with each other. They are connected by a lifting cylinder 9.

  The crane 2 is supported by a turning ring (not shown) so as to be turnable with respect to the turning ring receiving frame 15, and the turning ring receiving frame 15 is supported so as to be movable up and down with respect to the mast 1. The lower surface of the swivel ring receiving frame 15 is fixed to the upper end of the guide mast 8.

  Each of the main body support frame 3 and the upper frame 6 is provided with telescopic beams 12 and 14 (FIGS. 10 and 12) that expand and contract in a horizontal cross direction (front and rear left and right) or one direction front and rear left and right. The telescopic beams 12 and 14 extend on the beam 10a of the building 10 composed of the column 10b and the beam 10a (cross member) and can be fixed to the beam 10a by the anchor bolts 11 and 13, thereby. The crane body 4 is fixed to the building 10.

  The building 10 shown in FIGS. 10 and 11 is constructed to the upper layer by the climbing crane, and when the upper layer construction is completed as shown in FIG. 12, the crane body 4 is relocated to the upper part of the building 10. Do work.

  In order to replace the crane body 4 upward, in the state of no load (FIG. 11) in which the crane 2 is not suspended, first, the telescopic beam 14 of the upper frame 6 is extended as shown in FIG. With the pin 7 (see FIG. 10) inserted into the mast 1, the lock pin 5 of the upper frame 6 is pulled out from the mast 1, the lifting cylinder 9 is extended and the upper frame 6 is lowered to extend the expansion / contraction. The beam 14 is placed on the beam 10 a of the building 10, the lock pin 5 of the upper frame 6 is inserted into the mast 1 to fix the upper frame 6 to the mast 1, and the telescopic beam 14 is fixed to the beam 10 a by the anchor bolt 13. Secure to. Thereby, the crane main body 4 will be in the state supported by the building 10 by both the main body support frame 3 and the upper frame 6, as shown in FIG.

  Next, the anchor bolt 11 (see FIG. 10) that fixes the telescopic beam 12 of the main body support frame 3 to the beam 10a is released to reduce the telescopic beam 12. Subsequently, when the lift cylinder 9 is extended by pulling out the lock pin 5 of the upper frame 6 from the mast 1, the crane body 4 rises, so that the lock pin 5 of the upper frame 6 is inserted into the mast 1 and fixed at the raised position. Subsequently, the lock pin 7 of the guide mast 8 is pulled out from the mast 1, the lifting cylinder 9 is reduced, the guide mast 8 is lowered, and the lock pin 7 is inserted into the mast 1, so that the guide mast 8 is moved to the mast 1. Fix (state of FIG. 13). This operation raises the crane body 4 by a predetermined stroke. Again, by repeating the operation of raising the crane main body 4 by a predetermined stroke in the same manner as described above, the telescopic beam 12 of the main body support frame 3 is positioned above the beam 10a that is higher than the beam 10a that has been supported so far. After the mast 1 is lifted up, as shown in FIG. 14, the telescopic beam 12 of the main body support frame 3 is extended on the beam 10 a, and the telescopic beam 12 is fixed to the beam 10 a by the anchor bolt 11.

  Next, the anchor bolt 13 that fixes the telescopic beam 14 of the upper frame 6 to the beam 10a is released, the telescopic beam 14 is reduced, and then the lock pin 7 of the guide mast 8 is pulled out from the mast 1, and the lifting cylinder 9 is extended, the guide mast 8 and the crane 2 are raised, and the lock pin 7 of the guide mast 8 is inserted into the mast 1 and fixed. Subsequently, the lock pin 5 of the upper gantry 6 is pulled out from the mast 1, the lifting cylinder 9 is contracted to raise the upper gantry 6, and the lock pin 5 is inserted into the mast 1 at the raised position, and the upper gantry 6 is masted 1. Secure to. As a result, the crane 2 is raised by a predetermined stroke. Again, by repeating the operation of raising the crane 2 by a predetermined stroke in the same manner as described above, the lock pin 5 of the upper frame 6 is moved to the mast 1 at the position where the turning ring receiving frame 15 is at the upper end of the mast 1 (FIG. 11). The lock pin 7 of the guide mast 8 is inserted into the mast 1 and fixed. Thereby, the crane 2 is fixed to the upper end of the mast 1 via the turning ring receiving frame 15 fixed to the guide mast 8. In this way, the replacement of the crane body 4 is completed.

  In the above-described climbing crane, the upper end of the guide mast 8 has a configuration in which the upper end of the guide mast 8 is integrally fixed to the lower surface of the swivel ring receiving frame 15. 2 is required to lower the guide mast 8 and the upper frame 6 integrated with the upper frame 6 to support the upper frame 6 on the beam 10 a of the building 10. For this reason, there is a problem that the replacement work of the crane body 4 is very troublesome and takes time.

  Since the crane 2 is always located above the upper frame 6 and the crane 2 cannot enter the building 10, the upper frame 6 is always supported by the uppermost beam 10a of the building 10. It is necessary to let For this reason, for example, in the case of a building 10 constructed with concrete, the upper frame 6 cannot be supported until the concrete of the uppermost beam 10a is solidified and strength is obtained. There is a problem that the waiting time until the strength of the beam 10a is obtained becomes longer and the construction period is extended.

  On the other hand, when the crane 2 lifts and lowers the suspended load, the crane body 4 is supported only by the body support frame 3 as shown in FIGS. For this reason, the gravity W and the moment M acting on the crane main body 4 are concentrated on the beam 10a supporting the main body support frame 3, so that it is considered that the beam 10a is bent. However, there is a problem that it takes time to attach and remove the reinforcing member.

Moreover, as a climbing crane, there is one shown in Patent Document 1. This climbing crane has a crane main body with a crane fixed to the top of the mast and a main body support frame fixed to the lower end of the mast. The main body support frame is attached to and detached from the cross beam and to each end of the beam. It is supported on the beam of the building by an extension beam provided as possible. Each of the masts is provided with an upper frame and a lifting device that can be remounted by attaching and detaching a rod, and the upper frame and the lifting device are connected by a lifting cylinder. The upper frame is provided with an extension beam that extends outward in the horizontal direction and is supported on the upper or inner surface of the beam of the building or the inner surface of the column.
JP 2000-203788 A

  However, the climbing crane shown in Patent Document 1 has a configuration in which the crane is fixed in advance to the upper end of the mast. Therefore, in this climbing crane, the upper frame can be raised and lowered with respect to the mast. Sometimes the crane body can be supported on the building by both the main support frame and the upper frame.

  However, as described above, in a climbing crane having a crane fixed to the upper end of the mast in advance, it is necessary to raise the crane body by adding an additional mast to the lower end of the mast during the initial assembly of the crane body. For this reason, a space for carrying in an additional mast is required below the main body support frame. Therefore, for example, when the main support frame is installed on the second floor, the first floor is used as a mast carry-in space, and the upper frame is installed on the third floor, a building for at least three floors by another crane There is a problem that the crane body cannot be assembled unless it is constructed in advance.

  The present invention has been made in view of the above circumstances, and when assembling the crane body, the height of the building constructed by another crane can be lowered, and after assembling the crane body, the crane is fixed to the upper end of the mast. The purpose of this study is to provide a climbing crane that can support the crane body to the structure with the main frame support frame and the upper frame when the building is built by allowing the upper frame to freely move up and down. is there.

  The climbing crane of the present invention includes a main body support frame fixed to the lower end of the mast, an upper frame that can be resized along the mast on the upper side of the main body support frame, and a repositioning along the mast on the upper side of the upper frame. Climbing guide mast that can be moved, a climbing cylinder that connects between the upper frame and the guide mast, and a crane that can be moved up and down along the mast via a swivel ring frame on the upper side of the guide mast A crane, which includes a guide mast mounting bracket that can be fixed to and detached from the swivel ring receiving frame at an upper end of the guide mast, and is fixed to and separated from the upper end of the mast at the swivel ring receiving frame. It is characterized by having a connecting arm capable of.

  In the above means, the connecting arm is provided so as to be rotatable at an outer standby position and an inner mast upper end position with respect to the swivel ring receiving frame, and can be fixed to the upper end of the mast at the time of inner rotation. Is preferred.

  Moreover, it is preferable that the connection arm provided in the turning ring receiving frame is disposed so as to be fixed to the four corners of the upper end of the mast.

  Moreover, it is preferable that the guide mast mounting bracket is provided at the four corners of the upper end of the guide mast.

  In the climbing crane of the present invention, the mast fixed to the main body support gantry and the upper gantry and the guide mast, each of which is removably provided and connected to each other by the lifting cylinder, and the swivel ring bearing movable with respect to the mast. A crane supported by a frame, and the upper end of the guide mast can be fixed to and detached from the swivel ring receiving frame by a guide mast mounting bracket, and the swivel ring receiving frame is guided by a connecting arm provided on the swivel ring receiving frame. The crane can be fixed to the upper end of the mast, and the crane can be lifted to the required height by adding the additional mast to the upper end of the mast with the crane with the pivot ring receiving frame fixed to the upper end of the guide mast by the guide mast mounting bracket. Can assemble the crane body, so assemble the crane body It is not necessary that building a building of the required height by another crane because an effect of facilitates initial construction of buildings.

  Further, by fixing the swivel ring receiving frame to the upper end of the mast with the connecting arm in a state where the swivel ring receiving frame is positioned at the upper end of the mast, the guide which has been fixed to the swivel ring receiving frame of the crane by the guide mast mounting bracket. Since the mast can be unlocked, the upper frame and the guide mast can be freely moved up and down along the mast, so that the crane body can be moved by both the main frame support frame and the upper frame during the crane operation. It can be supported by the building, so that the gravity and moment acting on the crane body can be dispersed and supported by the beams on multiple floors, so that the beams can be prevented from bending and thus the beams are reinforced with reinforcing members There is an effect that the work to do can be omitted.

  In addition, since the upper frame can be supported by a lower layer beam than the uppermost beam of the building, even when the building is constructed of concrete, the strength of the upper beam beam is solidified. The crane work can be carried out without waiting until the work efficiency is improved.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

   1 to 9 show an example of an embodiment of a climbing crane according to the present invention. FIG. 1 is a schematic front view of the climbing crane according to the present invention. FIG. 2 is an enlarged perspective view of a portion II in FIG. 2 is a plan view of FIG. 2, FIG. 4 is a front view showing a state in which the building is being built by the climbing crane of FIG. 1, FIG. 5 is a front view showing a state in which the building has been built, and FIG. 4 is an enlarged perspective view of a VI portion, FIG. 7 is a plan view of FIG. 6, FIG. 8 is a perspective view showing a state where the connecting arm is rotated, and FIG. 9 is a perspective view showing a state where the connecting arm is fixed to the mast. 1 to 9, the same components as those shown in FIG. 10 are denoted by the same reference numerals.

  FIG. 1 shows a state in which the crane body 4 is assembled on the foundation. The telescopic beam 12 of the main body support frame 3 of the crane main body 4 is extended and fixed to the foundation by the anchor bolt 11, and is integrated with the main body support frame 3. The upright mast 1 is equipped with an upper frame 6 and a guide mast 8. The upper frame 6 and the guide mast 8 are connected to each other by an elevating cylinder 9 shown in FIG. 10 and can be separately fixed to and separated from the mast 1 by lock pins 5 and 7 provided respectively. Can be reordered. 2 and 3, only the guide mast 8 is shown, but the upper frame 6 and the guide mast 8 are each provided with a rectangular hole 16 through which the mast 1 having a rectangular cross section can pass.

  2 and 3, the guide mast 8 is provided with guide mast mounting brackets 17 at the four corners at the upper end of the guide mast 8, and the guide mast mounting brackets 17 are arranged via a swiveling ring (not shown). The lower surface of the swivel ring receiving frame 15 that supports the crane 2 so as to be swivelable can be fixed and separated by a bolt 18 or the like.

  Further, the swivel ring receiving frame 15 is provided with a connecting arm 19 that can be fixed to and separated from the upper end of the mast 1 as shown in FIGS. 6 to 9, and as shown in FIG. When the building 10 is constructed by crane work, the turning ring receiving frame 15 is fixed to the upper end of the mast 1 by the connecting arm 19.

As shown in FIGS. 6 to 9, four connecting arms 19 are arranged along the outer sides of the four sides of the rectangular hole 16 through which the mast 1 penetrates the swivel ring receiving frame 15. One end of the connecting arm 19 is attached to the swivel ring receiving frame 15 by a vertical fulcrum shaft 20 (or a fulcrum bolt) so as to be horizontally rotatable. the notches 21 facing Yes and is formed, also when it is a position where the coupling arm 19 by rotating the connection arms 19 inward across the four corners of the mast 1 at approximately 45 ° angle A fixing bolt 22 adapted to fit into the notch 21 is provided on the turning ring receiving frame 15 so that the other end of the connecting arm 19 can be fixed to the turning ring receiving frame 15 by the fixing bolt 22. .

  At the four corners of the end of the mast 1 having a rectangular shape, there are provided connection plates 24 having bolt holes 23 for connecting the masts 1 to each other as shown in FIG. The connecting arm 19 that is rotated and fixed at the other end to the turning ring receiving frame 15 by a fixing bolt 22 is formed with a fixing plate 25 that faces the connecting plate 24. Bolt holes 26 corresponding to the bolt holes 23 of the connecting plate 24 are formed. The connecting plate 24 and the fixing plate 25 can be fixed by tightening the bolts 27 through the bolt holes 23 and 26 of the connecting plate 24 and the fixing plate 25.

  Accordingly, as shown by a two-dot chain line in FIG. 7, the connecting arm 19 at the standby position along the outer side of the four sides of the hole 16 of the swivel ring receiving frame 15 is turned inward (hole 16 side) as indicated by a broken line arrow. When the cut portion 21 at the other end is fitted and fixed to the fixing bolt 22, the connecting arm 19 crosses the four corners of the mast 1 at an angle of about 45 °, and the mast 1 shown in FIG. The connecting plate 24 corresponds to the fixing plate 25 of the connecting arm 19. Therefore, when the connecting plate 24 and the fixing plate 25 are fastened and fixed to the bolt holes 23 and 26 through the bolts 27, the swivel ring receiving frame 15 is fixed to the upper end of the mast 1. At this time, since the connecting arm 19 has a configuration in which the cut-out portion 21 at the other end is fitted to the fixing bolt 22 from the inside, the connecting arm 19 cannot rotate outwardly from this position and is safe. Is preserved.

  As described above, when the turning ring receiving frame 15 is fixed to the upper end of the mast 1 by the connecting arm 19, the crane 2 is supported on the upper end of the mast 1, so that the turning ring receiving frame 15 is supported by the guide mast mounting bracket 17. The guide mast 8 that has been fixed to can be released. Accordingly, as shown in FIG. 4, the upper frame 6 and the guide mast 8 can freely move up and down thereafter. Thereafter, the crane body 4 is moved to the beams 10 of different heights of the building 10 on both the main body support frame 3 and the upper frame 6. The crane work can be performed with the support 10a.

  Next, the operation of the above-described embodiment will be described.

  FIG. 1 shows a state in which the crane body 4 is assembled on the foundation, and the body support frame 3 is fixed by extending the telescopic beam 12 of the body support frame 3 and fixing it to the foundation with anchor bolts 11. A first mast 1 (for example, a length of 4 meters) is erected on the main body support frame 3. The mast 1 is provided with an upper frame 6 and a guide mast 8 connected by a lifting cylinder 9, and further provided with a turning ring receiving frame 15 for supporting the crane 2 via a turning ring (not shown) on the guide mast 8. To do. The above series of operations can be performed using another crane.

  2 and 3, the guide mast mounting brackets 17 provided at the four corners at the upper end of the guide mast 8 are fixed to the lower surface of the swivel ring receiving frame 15 by using bolts 18 or the like.

  In this state, when the lock pin 5 (see FIG. 10) of the upper frame 6 is pulled out from the mast 1 and the lock pin 7 of the guide mast 8 is inserted into the mast 1 and the lift cylinder 9 is extended, the guide mast 8 and the swivel ring are received. Since the frame 15 and the crane 2 are lifted together, the lock pin 7 of the guide mast 8 is inserted and fixed to the mast 1 at the raised position, and then the lock pin 5 of the upper frame 6 is pulled out to move the lifting cylinder 9 By reducing the size, the upper frame 6 is pulled up and the lock pin 5 is inserted into the mast 1 and fixed. Thereby, the guide mast 8, the turning ring receiving frame 15, and the crane 2 are raised by a predetermined stroke. Again, the crane 2 is raised by performing the same operation as described above, and when the crane reaches a predetermined height, the crane 2 performs the work of adding the second stage mast to the upper end of the first stage mast. Do. The above operation is repeated to assemble the mast 1 having a required height, and the height is adjusted so that the swing ring receiving frame 15 of the crane 2 is positioned at the upper end of the mast 1. At this time, since the turning ring receiving frame 15 of the mast 1 is fixed to the guide mast 8 by the guide mast mounting bracket 17, the crane 2 is supported by the mast 1 in a stable state.

  As described above, the crane 2 with the swivel ring receiving frame 15 fixed to the upper end of the guide mast 8 by the guide mast mounting bracket 17 raises the crane 2 itself while adding the additional mast 1 to the upper end of the mast 1. Since the crane body 4 having a height can be assembled, it is not necessary to construct a building having a required height by using another crane in order to assemble the crane body 4, thereby facilitating the initial construction of the building.

  Subsequently, as shown by a two-dot chain line in FIG. 7, the four connecting arms 19 waiting at positions along the outer sides of the four sides of the rectangular hole 16 of the swivel ring receiving frame 15 are indicated by broken line arrows. To the inner side (hole 16 side), the notch 21 at the other end is fitted to the fixing bolt 22, and the fixing bolt 22 is tightened to fix it. Then, the connecting plate 24 provided at the four corners of the end portion of the mast 1 in FIG. 9 and the fixing plate 25 of the connecting arm 19 correspond to each other, so that the bolt holes 23 and 26 of the connecting plate 24 and the fixing plate 25 are bolts 27. Tighten through. Thereby, the turning ring receiving frame 15 is fixed to the upper end of the mast 1.

  As described above, when the turning ring receiving frame 15 is fixed to the upper end of the mast 1 by the connecting arm 19, the crane 2 is supported on the upper end of the mast 1. The guide mast 8 fixed to the frame 15 can be released.

  Accordingly, as shown in FIG. 4, the upper frame 6 and the guide mast 8 can freely move up and down thereafter, so that the crane body 4 can be moved at different heights of the building 10 on both the main body support frame 3 and the upper frame 6 during crane operation. Can be supported by the beam 10a. In this way, by supporting the crane body 4 on the beams 10a of different heights of the building 10 by both the main body support frame 3 and the upper frame 6, the gravity W and the moment M acting on the crane body 4 can be increased in a plurality of floors. Since the beam 10a can be dispersed and supported, it is possible to prevent the beam 10a from being bent, and thus the work of reinforcing the beam 10a with a reinforcing member can be omitted.

  Moreover, since the upper frame 6 can be supported by the lower beam 10a than the uppermost beam 10a of the building 10 as shown in FIGS. 4 and 5, even when the building 10 is constructed of concrete, Crane work can be carried out without waiting until the concrete of the uppermost beam 10a is solidified and strength is obtained, so that work efficiency can be increased.

  The present invention is not limited to the above-described embodiment, and the shape of the guide mast mounting bracket and the shape of the connecting arm can be variously selected, and other modifications can be made without departing from the scope of the present invention. Of course.

It is a schematic front view of the climbing crane of this invention. It is an expansion perspective view of the II part of FIG. FIG. 3 is a plan view of FIG. 2. It is a front view which shows the state which is building the building with the climbing crane of FIG. It is a front view which shows the state which construction of the building advanced. It is an expansion perspective view of VI part of FIG. FIG. 7 is a plan view of FIG. 6. It is a perspective view which shows the state which rotates a connection arm. It is a perspective view which shows the state which fixes a connection arm to a mast. It is a front view which shows an example of the conventional climbing crane. It is a schematic front view which shows the unloaded state of the crane of FIG. It is a schematic front view which shows the state which constructed to the upper layer with respect to the building. It is a schematic front view which shows the state which replaces a crane main body. It is a schematic front view which shows the action | operation for raising a crane and fixing to the upper end of a mast.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mast 2 Crane 3 Main body support stand 4 Crane main body 6 Upper stand 8 Guide mast 9 Lifting cylinder 15 Turning ring receiving frame 17 Guide mast mounting bracket 19 Connecting arm

Claims (4)

  A main support frame fixed to the lower end of the mast, an upper frame that can be resized along the mast on the upper side of the main frame support frame, a guide mast that can be resized along the mast on the upper side of the upper frame, A climbing crane comprising an elevating cylinder that connects between the upper frame and the guide mast, and a crane that can be moved up and down along the mast via a swivel ring frame on the upper side of the guide mast. A guide mast mounting bracket that can be fixed to and detached from the swivel ring receiving frame is provided at the upper end of the mast, and a connecting arm that can be fixed and separated from the upper end of the mast is provided at the swivel ring receiving frame. Climbing crane characterized by that.   The connecting arm is provided so as to be rotatable at an outer standby position and an inner mast upper end position with respect to the swivel ring receiving frame, and can be fixed to the upper end of the mast during inner rotation. The climbing crane according to Item 1.   The climbing crane according to claim 1 or 2, wherein connecting arms provided in the swivel ring receiving frame are arranged so as to be fixed to four corners of the upper end of the mast. The climbing crane according to claim 1, wherein the guide mast mounting bracket is provided at four corners of an upper end of the guide mast.

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