JP2546729Y2 - Jig for tower crane climbing - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig used for a climbing operation of a tower crane.
In particular, the present invention relates to a jig used for lifting and masting a mast of a tower crane on a beam of a building under construction.

[0002]

2. Description of the Related Art It is well known that tower cranes are used for building high-rise buildings and the like. By the way, in this tower crane, the main pillar part, that is, the mast is configured as a telescope type, and this mast is expanded and contracted, or a revolving body with a crane boom mounted on the mast, and this revolving body is moved up and down along the mast There is a structure in which a lifting device for raising and lowering is assembled, and the lifting device is operated to raise the revolving superstructure on which the crane boom is mounted by so-called self-climbing.

[0003] Incidentally, FIG. 4 shows a mast 1 having a base receiving base 1a and a revolving unit 3 on which a crane boom 2 is mounted, that is, a revolving unit 3 on which a crane is mounted.
An elevating device 4 for moving the revolving unit 3 up and down along the mast 1
It is a side view which shows the schematic structure of the general self-climbing type tower crane which consists of main components. In this tower crane, the lifting device 4 includes an upper lifting frame 4a and a lower lifting frame 4b, and the upper lifting frame 4a and the lower lifting frame 4
An elevating mechanism (not shown), which expands and contracts by hydraulic drive, is incorporated between b and b. The upper lifting frame 4a is integrally formed with the revolving unit 3 via a guide mast 1b extrapolated to the mast 1, and the upper lifting frame 4a and the lower lifting frame 4b are alternately engaged with the mast 1. At the same time, by operating the elevating mechanism, the revolving unit 3 is configured to be climbed in the same manner as a scale insect.

In order to further increase the height of the crane, that is, the position of the revolving unit 3, the lifting device 4
The upper lifting frame 4a and the base receiving base 1a of the mast 1 are placed on the beam 5a of the building 5 under construction.
The mast 1 itself is lifted to raise the crane height. FIG. 5, FIG. 6, FIG. 7, FIG. 8, and FIG. 8 show a procedure for lifting the mast 1 itself. Hereinafter, the procedure will be described with reference to the drawings.

First, the upper lifting frame 4a of the lifting device 4
Is fixed to the beam 5a of the building 5 under construction, specifically, as shown in FIG. Next, the lower lifting frame 4b is raised to lift the mast 1 up. Then, the lower elevating frame 4b is moved up and down several times, and the mast 1 is lifted up in the manner of a so-called shading insect. As shown in FIG. 6, when the base receiving gantry 1a of the mast 1 is raised to the height of the beam 5b of the second layer of the building 5, the base receiving gantry 1a is fixed to the beam 5b.

After fixing the base receiving base 1a of the mast 1 to the beam 5b, the upper lifting frame 4a of the lifting device 4
And the lower elevating frame 4b are alternately moved up and down to climb the revolving unit 3 along the mast 1. FIG. 7 is a side view showing this state. FIG. 8 shows a state where the revolving superstructure 3 is further lifted up to the uppermost position of the mast 1.

By the way, when lifting the mast 1,
As described with reference to FIGS. 5 and 6, the upper lifting frame 4a of the lifting device 4 and the base support 1a of the mast 1
Need to be temporarily fixed on the beams 5a and 5b of the building 5 under construction. That is, mast 1
Must be fixed on the beams 5a and 5b while maintaining the vertical position.

[0008] Therefore, in the conventional method of fixing, first, the upper lifting frame 4a is connected to the beam 5
In the case where it is fixed on a, it was fixed in the manner shown in FIG. That is, a receiving frame 6 made of an H-shaped steel material or the like is provided below the upper elevating frame 4a, and the left and right ends of the receiving frame 6 are provided on a frame receiving pillow 7 (see FIG. (Only the right side is shown for simplicity). That is, the receiving frame 6 and the frame receiving pillow 7 are fixed using two jigs. At that time, since it is necessary to center both ends of the receiving frame 6 with respect to the frame receiving pillow 7 installed on the beam 5a, in other words, put the mast 1 in a vertical state and without decentering the mast position. Conventionally, as shown in the drawing, a plurality of chain blocks 8 are connected to both ends of the receiving frame 6 as shown in the figure, and by operating the plurality of chain blocks 8, the receiving frame 6 can be moved forward, backward, left and right. And centering or adjusting the position.

Also, when the lower end of the mast 1, ie, the base receiving base 1a is fixed on the beam 5b, it is fixed in substantially the same manner as when the upper lifting frame 4a is fixed. FIG. 10 is a front view showing the fixing procedure. In this case, since the base support base 1a has arms 1c made of H-shaped steel projecting from front to back and right and left as shown in the figure, the four arms 1c are connected to the beams 5a.
b, and fixed on the frame receiving pillows 7 arranged on the b. Of course, in this case, centering and positioning are also performed by using a plurality of chain blocks 8, as in the case of the upper lifting frame 4a.

[0010]

[Problem to be solved by the invention] As described above,
Conventionally, the mast 1 is lifted, and the lifted mast 1 is placed on the beams 5a and 5b on the building 5 side, and the work for centering and fixing the mast 1 vertically is performed using a chain block or the like. However, there is a problem in that there is an extremely complicated operation, which requires a considerable amount of time for the entire climbing operation, which leads to a prolonged construction period and the like. An object of the present invention is to provide a special climbing jig which can save labor and time required for such a climbing operation.

[0011]

According to the present invention, there is provided a climbing jig having the following centering function. A tower crane equipped with a mast having a base receiving base at the lower end, a revolving unit having a crane mounted on the mast, an upper elevating frame for elevating and lowering the revolving unit along the mast, and an elevating device including a lower elevating frame. In order to climb the mast, the upper elevating frame of the elevating device and the base receiving base of the mast are fixed on a beam of a building using a jig including a receiving frame and a frame receiving pillow, A guide jig is provided between the receiving frame and the frame receiving pillow by providing a pair of guide plates having an inclined sliding surface so that the inclined sliding surface is symmetrical left and right. Place the receiving frame or frame receiving pillow between the left and right guide plates of the jig, In the configuration it was able to be able to fix by exerting a centering function by.

[0012]

According to the present invention, as described above, the receiving frame or the frame receiving pillow is fixed on the beam via the guide jig including the pair of guide plates having the inclined sliding surfaces. There is no need to perform a positioning operation using a chain block or the like as in the related art.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of the present invention will be specifically described based on embodiments shown in the drawings. FIG. 1 shows a case where an upper lifting frame 4a constituting the lifting device 4 is mounted on a beam 5a and fixed. First, as explained earlier,
When the upper elevating frame 4a is placed on the beam 5a and fixed, the jig is provided below the upper elevating frame 4a through two jigs, that is, a receiving frame 6 and a frame receiving pillow 7 which is previously inked and arranged on the beam 5a. Is fixed as before.

In the present invention, a guide jig 11 having a positioning function, in other words, a centering function, is interposed between two jigs of the receiving frame 6 and the frame receiving pillow 7. Is fixed. In this embodiment, as shown in the figure, a guide jig 11 is made of an H-section steel, and a pair of guide plates 13 and 13 having inclined sliding surfaces 12 formed on the upper surfaces of both ends thereof, respectively. The moving surfaces 12 and 12 are opposed to each other so as to be symmetrical.

In the embodiment shown in this drawing, the guide jigs 11 are also provided on the lower surfaces of both right and left ends of the receiving frame 6.
Plate 13 having inclined sliding surface 12 opposed to
And 13 are attached to each other so as to be engaged with each other, and are configured so as to be engaged with each other, so that the left, right, front and rear directions are simultaneously regulated. In the embodiment,
As an assembling procedure, first, the frame receiving pillows 7 are attached to the lower surface of the guide jig 11, specifically, to the lower surfaces of both ends of the guide jig 11, respectively. Then, the frame receiving pillow 7 is first arranged at the position where the ink is marked on the beam 5a. Next, the receiving frame 6 attached to the lower surface of the upper lifting frame 4a is assembled by operating the lifting device 4, that is, lowering the upper lifting frame 4a and placing it on the guide jig 11.

FIG. 2 shows a fixing portion showing a state in which the guide jig 11 is interposed between the receiving frame 6 and the frame receiving pillow 7 arranged on the beam 5a to fix the both and complete the assembly. 14 is a bolt for connecting the guide jig 11 to the frame receiving pillow 7, and 15 is a bolt for connecting the receiving frame 6 to the guide jig 11.

Next, FIG. 3 is a side view of the lower end of the mast 1, that is, a fixing portion showing a state where the base receiving base 1a is mounted on the beam 5b and fixed. Note that, in this case, as shown in FIG.
Since the arms 1c made of a shaped steel are extended right and left and front and rear, each of the arms 1c is directly mounted on the frame receiving pillow 7 arranged on the beam 5b and fixed. Therefore, as shown in the drawing, a pair of guide plates 1 each having an inclined sliding surface 12 formed on the upper surface of the frame receiving pillow 7.
3 and 13 are opposed to each other so that the inclined sliding surfaces 12 and 12 are symmetrical, and the frame receiving pillow 7 and the so-called guide jig are also used.

Therefore, the frame receiving pillow 7 is arranged at a position on the beam 5b which has been previously inked, and the mast 1
The base receiving gantry 1a is lowered, and more specifically, the arm 1c protruding from the base receiving gantry 1a is mounted thereon, whereby the base receiving gantry 1a is automatically positioned and set. In other words, the lifted mast 1 is fixed vertically on the beam on the building side without eccentricity.

[0019]

[Effects of the Invention] The climbing jig of the tower crane according to the present invention is constructed as described in the above embodiments, so that when the mast is fixed at a predetermined height position, a chain block or the like is used as in the prior art. There is no need to perform positioning work using Therefore, the following effects can be exhibited. (1) The work of lifting and fixing the mast is efficiently developed. As a result, the construction period of a high-rise building or the like is reduced. (2) Since the configuration as the guide jig is extremely simple and has a positioning or centering function, the mast lifted is automatically held vertically. as a result,
The tower crane will be more safely integrated into the building under construction.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a method of mounting and fixing an upper elevating frame of a tower crane on a beam under construction using a guide jig according to the present invention.

FIG. 2 is a front view of a fixing portion showing a state in which a guide jig of the present invention is interposed between a receiving frame and a frame receiving pillow arranged on a beam, and both are fixed.

FIG. 3 is a front view of a fixing portion showing a state in which a mast base support is mounted on a beam and fixed.

FIG. 4 is a side view showing the structure of a self-climbing tower crane.

FIG. 5 shows a state in which the upper lifting frame of the elevating device of the tower crane is mounted on a beam under construction and fixed, and the elevating device is operated to lift the mast in order to elevate the mast of the tower crane. It is a side view.

FIG. 6 is a side view showing a state in which a base receiving gantry at a lower end portion of the mast lifted is mounted on a beam being built.

FIG. 7 is a side view showing a state in which a revolving structure on which a crane mounted on a mast is mounted is climbed in a manner similar to a lengthworm by operating an elevating device.

FIG. 8 is a side view showing a state where the revolving superstructure on which the crane is mounted is climbed to the top of the mast.

FIG. 9 is an explanatory view showing an operation procedure for mounting and fixing an upper elevating frame on a beam under construction in the elevating device.

FIG. 10 is an explanatory view showing an operation procedure for mounting and fixing the base receiving gantry at the lower end of the mast on a beam being built.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mast 1a Base receiving base 2 Boom 3 Revolving unit 4 Lifting device 4a Upper lifting frame 4b Lower lifting frame 5 Building 5a, 5b Beam 6 Receiving frame 7 Frame receiving pillow 8 Chain block 11 Guide jig 12 Slope sliding surface 13 Guide plate 14, 15 Connecting bolt

Claims (1)

(57) [Scope of request for utility model registration] 1. A mast having a base receiving frame, a revolving unit on which a crane is mounted, an upper elevating frame for elevating and lowering the revolving unit along the mast, and an elevating device comprising a lower elevating frame. A tower crane, comprising: a jig composed of a receiving frame and a frame receiving pillow on a beam of a building, the upper elevating frame of the elevating device and the base receiving base of the mast, respectively, for climbing the mast. A guide jig in which a pair of guide plates each having an inclined sliding surface is disposed between the receiving frame and the frame receiving pillow so that the inclined sliding surfaces are symmetrical. A jig for tower crane climbing, wherein the jig is configured to be fixed with an intervening tool.