JP2009001345A - Base-isolation supporting device for crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base-isolation supporting device for a crane capable of absorbing the remor of earthquake efficiently while the stability of the crane is enhanced in a simple structure and without installing any ballast etc. at all and embodying in a compact construction with the overall height suppressed. <P>SOLUTION: The consitution of the base-isolation supporting device for the crane includes a base block 16 as a mast supporting member to be supported on a gantry frame 17 and a base frame 15 as stationarily installing member, and in a position at equal spacing to the radial direction from the axis of a mast 2, the base block 16 is supported through a laminated rubber bearing 13 as a horizontal direction displacement absorbing means installed in such a manner as nipping the base block 16 from above and below and also a rolling bearing 18 and a sliding bearing 19, whereby the load acting on the mast 2 and a tumbling moment are received by compression of the horizontal direction displacement absorbing means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seismic isolation support device for a crane.

  Generally, when constructing a structure such as a building, a crane such as a climbing crane or a tower crane is used.

  FIG. 14 is a schematic view showing an example of a conventional climbing crane. The climbing crane 1 is capable of swiveling a swinging body 4 via a lifting unit 3 on the top of a mast 2 capable of sequentially adding mast blocks 2a upward. The jib 5 is attached to the swinging body 4 so as to be able to move up and down, and a counter frame 6 extending backward is integrally provided on the swinging body 4, and a hanging load hook 7 is suspended on the counter frame 6. The hoisting device 9 for hoisting and lowering the wire rope 8 and the hoisting device 11 for hoisting and lowering the wire rope 10 for raising and lowering the jib 5 are provided.

  By the way, in recent years, large earthquakes have occurred in various parts of Japan, and in particular, the Hyogoken-Nanbu Earthquake that occurred in January 1995 caused great damage to cranes at construction sites, factories and port facilities. In addition, since there are concerns about the occurrence of the Tokai earthquake and Kanto earthquake in the near future, research has been conducted on improving the earthquake resistance of cranes, and various damping structures and seismic isolation structures have been developed. ing.

  In recent tower cranes, the base end of the mast is supported by a spring element (laminated rubber, etc.), and a tensile force is applied to the laminated rubber, etc., as the spring element to ensure the overall stability. In order to avoid this, there are some that are designed to be isolated by installing a lot of very heavy ballast.

Moreover, as an example of a vibration damping structure of a crane, there is Patent Document 1, for example.
Japanese Patent No. 3565294

  However, many of the already developed crane damping structures and seismic isolation structures require power and complicated control devices, and it has been desired to develop a crane that can handle a large earthquake with a simple structure.

  In addition, in order to prevent tensile force from acting on the laminated rubber as the spring element, there is a disadvantage that the whole weight becomes too heavy and is not practical. .

  For this reason, the inventors of the present invention have a laminated rubber as a seismic isolation support device for a crane that can absorb the shaking of the earthquake efficiently while improving the stability of the crane without mounting any ballast or the like with a simple structure. We are developing a seismic isolation support device that is placed vertically.

  On the other hand, the present inventors performed a simulation when an earthquake occurred on a crane installed on a high-rise building via a seismic isolation support device using an analysis model as shown in FIG.

  As the high-rise building, Max. Assuming a building on the 60th floor, the crane has a concentrated mass + beam element, and the relationship between the seismic isolation support device frequency and the crane response acceleration in the simulation analysis model is a diagram as shown in FIG. The relationship between the seismic isolation support device frequency and the seismic isolation support device response displacement in the simulation analysis model is a diagram as shown in FIG.

As can be seen from FIGS. 16 and 17, in order to suppress the crane response acceleration to 200 [Gal] (= 2 [m / s ² ]) and prevent the crane from falling, the seismic isolation support device frequency is In the case of 0.25 [Hz], it has been found that the seismic isolation support device response displacement needs to be about 80 [cm].

  Here, for example, when trying to obtain a horizontal displacement of 80 [cm] with a laminated rubber, in particular, with a laminated rubber disposed at a location where a large compressive force acts, the height dimension is approximately the same as the horizontal displacement. In the seismic isolation support device of the type in which the laminated rubber that the inventors are developing is arranged up and down, the height becomes too high, leading to an increase in the size of the device, leaving room for improvement. It was.

  In view of such circumstances, the present invention has a simple structure and is not equipped with any ballast or the like, can efficiently absorb the shaking of the earthquake while improving the stability of the crane, and further suppresses the overall height dimension. An object of the present invention is to provide a seismic isolation support device for a crane that can be made compact.

According to the present invention, a mast support member integrated with a lower end portion of a mast is fixed to a base fixed installation member at at least three positions at equal intervals in the circumferential direction of the mast and from the axis of the mast. Supporting either one of the fixed installation member or the mast support member via horizontal displacement absorbing means disposed so as to be sandwiched from above and below at positions that are equally spaced in the radial direction,
Configured to receive the load acting on the mast and the overturning moment by compression of the horizontal displacement absorbing means,
Among the horizontal displacement absorbing means arranged above and below, the horizontal displacement absorbing means on either one of the upper and lower sides on which a larger compressive force acts is a rolling bearing or a sliding bearing, and the horizontal displacement on the one side The invention relates to a crane seismic isolation support device characterized in that the horizontal displacement absorbing means on either the upper or lower side where a compressive force smaller than the absorbing means acts is a laminated rubber bearing.

  According to the above means, the following operation can be obtained.

  When configured as described above, when a large earthquake occurs and the mast of a crane installed on the mast support member is laterally displaced in the horizontal direction, horizontal displacement absorbing means is disposed so as to sandwich the mast support member from above and below. The horizontal displacement absorbing means disposed below the mast support member on the overturning side of the mast is compressed, and the horizontal displacement absorbing means disposed on the upper side of the mast support member on the overturning side of the mast is compressed. In the case where the direction displacement absorbing means is compressed and the horizontal direction displacement absorbing means is disposed so as to sandwich the fixed installation member from above and below, the horizontal direction disposed above the fixed installation member on the falling side of the mast. The displacement absorbing means is compressed, and the horizontal displacement absorbing means disposed below the fixed installation member on the reverse side of the mast is compressed, whereby a tensile force is applied to the horizontal displacement absorbing means. Without at all action, it is possible to efficiently absorb the shaking of an earthquake, so that the collapse or the like of the crane can be avoided.

  Moreover, among the horizontal displacement absorbing means arranged above and below, the horizontal displacement absorbing means on either one of the upper and lower sides where a greater compressive force acts is a rolling bearing or a sliding bearing, and the horizontal displacement absorbing means on the one side is horizontal. By using the laminated rubber bearing as the horizontal displacement absorbing means on either the upper or lower side, on which a compressive force smaller than that of the direction displacement absorbing means acts, the overall height does not become too high, and the size of the apparatus can be avoided.

In the crane seismic isolation support device, the mast support member is composed of at least three or more base blocks projecting radially from the mast lower end in the radial direction,
The fixed installation member is composed of a base frame fixedly installed at a lower position of each base block, and a gate-type frame standing in a gate shape on the base frame so that each base block is inserted and arranged. And
A rolling bearing or a sliding bearing can be interposed between the upper surface of the base frame and the lower surface of each base block, and a laminated rubber bearing can be interposed between the upper surface of each base block and the inner upper surface of the portal frame.

Moreover, in the seismic isolation support device for the crane, the mast support member is constituted by a hollow base frame on which the mast is erected,
The fixed installation member is fixedly disposed on the base frame, the base frame being fixedly installed at a position below the base frame, and the both ends of the base frame projecting outside the base frame. It consists of gantry beams,
A rolling bearing or a sliding bearing may be interposed between the upper surface of the gantry beam and the upper surface inside the base frame, and a laminated rubber bearing may be interposed between the lower surface inside the base frame and the lower surface of the gantry beam.

  Furthermore, in the seismic isolation support device for the crane, the mast is divided into a plurality of mast blocks in the vertical direction, flange portions are formed at the upper and lower ends of each mast block, and the flange portions facing each other are vertically connected. In addition, an elastic material that urges the flange portions in a direction to bring them into close contact with each other can be connected by a fastening member that allows relative displacement in the vertical direction between the flange portions. The mast block that is divided into upper and lower parts is bent at the flange part to absorb and attenuate the excitation force, so that the crane response acceleration can be reduced, so that the rolling bearing or sliding bearing and laminated rubber can be reduced. Compared to installing only the base isolation support device using the bearing alone, it is only necessary to share and bear the seismic isolation support device response displacement to be absorbed, Kymene Shin becomes possible to suppress lower the height of the support device becomes more effective in downsizing the apparatus.

  According to the crane's seismic isolation support device of the present invention, it is possible to efficiently absorb the shaking of the earthquake while improving the stability of the crane without mounting any ballast or the like, and further, the overall height dimension It is possible to achieve an excellent effect of reducing the size and reducing the size.

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

  1 to 4 show a first example of an embodiment of the present invention. In the figure, the same reference numerals as those in FIG.

The four base blocks 16 projecting radially from the lower end portion of the mast 2 in the radial direction are mast support members integrated with the lower end portion of the mast 2,
A base frame 15 fixedly installed at a position below each base block 16 as the mast support member, and a gate-type frame standing upright on the base frame 15 so that each base block 16 is inserted and arranged. 17 as a base fixed installation member,
The base block 16 as a mast support member is fixed to the base frame 15 as the fixed installation member and the portal frame 17 at positions that are equidistant from the axis O (see FIG. 2) of the mast 2 in the radial direction. The base block 16 is supported via a laminated rubber bearing 13 and a rolling bearing 18 or a sliding bearing 19 as horizontal displacement absorbing means disposed so as to sandwich the base block 16 from above and below,
The load acting on the mast 2 and the overturning moment are received by the compression of the horizontal displacement absorbing means,
Of the horizontal displacement absorbing means disposed above and below, the lower horizontal displacement absorbing means on which a larger compressive force acts is the rolling bearing 18 or the sliding bearing 19, and the lower horizontal displacement absorbing means The upper horizontal displacement absorbing means on which a small compressive force acts is a laminated rubber bearing 13.

In the case of the illustrated example, as shown in FIG. 3, when the weight of the climbing crane 1 is W, the falling moment is M, and the span between the bearings is L, the rolling bearing 18 or the sliding member disposed under the base block 16 The compression force P1 acting on the support 19 is
P1 = W / 4 + M / L
The compression force P2 acting on the laminated rubber support 13 disposed on the upper side of the base block 16 is
P2 = −W / 4 + M / L
And
P1> P2
It becomes.

  As shown in FIG. 3, the laminated rubber support 13 as the horizontal displacement absorbing means is formed by sandwiching a laminated rubber body 13a in which a large number of rubber plates and steel plates are alternately laminated between an upper flange 13b and a lower flange 13c. The lower flange 13c of the laminated rubber support 13 is fixed to the upper surface of the base block 16 as the mast support member, and the inner upper surface of the portal frame 17 as the fixed installation member, The upper flange 13b of the laminated rubber support 13 is fixed.

  As shown in FIG. 5, the rolling bearing 18 as the horizontal displacement absorbing means has a lower guide rail 21 attached to the surface of the lower flange plate 20, and a lower guide block 22 via a linear ball bearing to the lower guide rail 21. The upper guide rail 24 extending in a direction perpendicular to the lower guide rail 21 is attached to the surface of the upper flange plate 23, and the upper guide rail 24 is attached to the upper guide rail via a linear ball bearing. The block 25 is slidably fitted, and the back surfaces of the lower guide block 22 and the upper guide block 25 are integrally fixed via a cushioning material 26 such as a rubber shim. The plate 20 is fixed to the upper surface of the base frame 15 as the fixed installation member, and the upper frame is fixed. The Jipureto 23 are to be fixed to the base block 16 lower surface of the said mast support member.

  Further, as shown in FIG. 6, the sliding bearing 19 as the horizontal displacement absorbing means is integrated with a stainless steel plate 29 having a resin coating layer 28 formed on the surface of a lower flange plate 27 made of a steel plate, and a support material 30. In addition, a sliding member 35 is formed by integrating a steel plate 33 on which a fluororesin layer 32 is formed on a surface of an upper flange plate 31 made of a steel plate via a vibration absorbing material 34 such as a natural rubber sheet. The sliding member 35 is placed on the support member 30 so that the resin coating layer 28 and the fluororesin layer 32 are in contact with each other, and the lower flange plate 27 is used as the fixed installation member. The upper flange plate 31 is attached to the lower surface of the base block 16 as the mast support member. Unishi are.

  As shown in FIG. 1, each of the portal frames 17 is attached to the base frame 15 by pins 36, and the adjacent portal frames 17 are connected by connecting arms 37.

  Next, the operation of the illustrated example will be described.

  When configured as described above, in a state in which a simple downward load is applied to the mast 2 of the climbing crane 1, the four horizontal directions disposed below each base block 16 as a mast support member. The rolling bearing 18 or the sliding bearing 19 as the displacement absorbing means is compressed, and thereby the load in the vertically downward direction is supported.

  On the other hand, when a large earthquake occurs and the mast 2 of the climbing crane 1 is laterally displaced in the horizontal direction, a rolling bearing 18 or a sliding bearing 19 disposed below the base block 16 on the falling side of the mast 2. Is compressed, and the laminated rubber bearing 13 disposed on the upper side of the base block 16 on the reverse side of the mast 2 is compressed, whereby the rolling bearing 18 or the sliding bearing 19 as the horizontal displacement absorbing means is compressed. It is possible to efficiently absorb the shaking of the earthquake without applying any tensile force to the laminated rubber support 13, and the climbing crane 1 can be prevented from collapsing.

  The rolling bearing 18 or the sliding bearing 19 and the laminated rubber bearing 13 as the horizontal displacement absorbing means cannot support the tensile force, but in any direction by adopting the structure as shown in the illustrated example. Even when a load or a tipping moment is applied, the force can always be received by compression of the rolling bearing 18, the sliding bearing 19, or the laminated rubber bearing 13.

  Moreover, among the horizontal displacement absorbing means, the lower horizontal displacement absorbing means on which a larger compressive force acts is a rolling bearing 18 or a sliding bearing 19, and a smaller compressive force than the lower horizontal displacement absorbing means is obtained. By using the laminated rubber support 13 as the upper horizontal displacement absorbing means that acts, the overall height does not become too high, and an increase in the size of the apparatus can be avoided.

  In this way, it is possible to efficiently absorb the shaking of the earthquake while improving the stability of the climbing crane 1 without mounting any ballast or the like with a simple structure, and further, it is possible to reduce the overall height and reduce the size.

FIGS. 7-10 is the 2nd example of embodiment which implements this invention, Comprising: The part which attached | subjected the code | symbol same as FIGS. 1-4 has shown the same thing in the figure,
A plurality of sets (four in the example shown in the figure, a total of eight sets) arranged as a fixed installation member to be fixedly installed so as to sandwich the mount beam 12 from above and below as horizontal displacement absorbing means The base frame 14 as a mast support member is supported via the rolling bearing 18 or the sliding bearing 19 and the laminated rubber bearing 13.
The mast 2 is erected on the base frame 14 so that the distance between the axial center O of the mast 2 and the positions where the rolling bearings 18 or the sliding bearings 19 and the laminated rubber bearings 13 of the respective groups are arranged is equal.
The load acting on the mast 2 and the overturning moment are received by the compression of the horizontal displacement absorbing means,
Of the horizontal displacement absorbing means arranged above and below, the upper horizontal displacement absorbing means on which a larger compressive force acts is the rolling bearing 18 or the sliding bearing 19, and the compression is smaller than that of the upper horizontal displacement absorbing means. The lower horizontal displacement absorbing means on which the force acts is a laminated rubber bearing 13.

In the case of the example shown in FIGS. 7 to 10, as shown in FIG. 9, when the weight of the climbing crane 1 is W, the falling moment is M, and the span between the supports is L, the rolling disposed above the gantry beam 12. The compressive force P1 acting on the bearing 18 or the sliding bearing 19 is
P1 = W / 4 + M / L
The compressive force P2 acting on the laminated rubber bearing 13 disposed below the gantry beam 12 is
P2 = −W / 4 + M / L
And
P1> P2
It becomes.

  In the case of the example shown in FIGS. 7 to 10, the gantry beam 12 as the fixed installation member is constituted by a beam assembled in a cross shape and fixedly installed on the foundation frame 15.

  The base frame 14 as the mast support member includes a cylindrical main body portion 14a that supports the mast 2 and four bulges radially changing in phase from the outer peripheral surface of the main body portion 14a by 90 ° in the circumferential direction. And a hollow arm block portion 14b, and the base beam 12 penetrates the inside of the base frame 14, and the tip end portion projects from the open end of each arm block portion 14b.

  As shown in FIG. 9, the laminated rubber bearing 13 as the horizontal displacement absorbing means fixes the upper flange 13b to the lower surface of the gantry beam 12 as the fixed installation member and the base frame 14 as the mast support member. The lower flange 13c is fixed to the inner lower surface of the arm block portion 14b.

  The rolling bearing 18 as the horizontal displacement absorbing means has the same configuration as described above shown in FIG. 5 and fixes the lower flange plate 20 to the upper surface of the gantry beam 12 as the fixed installation member. The upper flange plate 23 is fixed to the inner upper surface of the arm block portion 14b of the base frame 14 as the mast support member.

  Further, the sliding bearing 19 as the horizontal displacement absorbing means has the same configuration as described above shown in FIG. 6, and the lower flange plate 27 is attached to the upper surface of the gantry beam 12 as the fixed installation member. The upper flange plate 31 is attached to the inner upper surface of the arm block portion 14b of the base frame 14 as the mast support member.

  Next, the operation of the example shown in FIGS. 7 to 10 will be described.

  When configured as described above, in the state where a simple downward load is applied to the mast 2 of the climbing crane 1, the four horizontal displacement absorbers disposed on the upper side of the gantry beam 12 as a fixed installation member. The rolling bearing 18 or the sliding bearing 19 as a means is compressed, and thereby the load in the vertically downward direction is supported.

  On the other hand, when a large earthquake occurs and the mast 2 of the climbing crane 1 erected on the base frame 14 as a mast support member is laterally displaced in the horizontal direction, the gantry beam 12 on the fall side of the mast 2 The rolling bearing 18 or the sliding bearing 19 disposed on the upper side is compressed, and the laminated rubber bearing 13 disposed on the lower side of the gantry beam 12 on the reverse side of the mast 2 is compressed. It is possible to absorb earthquake shaking efficiently without applying any tensile force to the rolling bearing 18 or the sliding bearing 19 and the laminated rubber bearing 13 as a directional displacement absorbing means, and the collapse of the climbing crane 1 is avoided. Will be.

  Although the rolling bearing 18 or the sliding bearing 19 and the laminated rubber bearing 13 as the horizontal displacement absorbing means cannot support a tensile force, by adopting a structure such as the example shown in FIGS. Regardless of the direction in which a load or overturning moment acts, the force can always be received by compression of the rolling bearing 18 or the sliding bearing 19 or the laminated rubber bearing 13.

  Moreover, among the horizontal displacement absorbing means, the upper horizontal displacement absorbing means on which a larger compressive force acts is the rolling bearing 18 or the sliding bearing 19, and a smaller compressive force acts on the upper horizontal displacement absorbing means. By using the laminated horizontal bearing 13 as the lower horizontal displacement absorbing means, the overall height does not become too high, and upsizing of the apparatus can be avoided.

  Thus, in the case of the example shown in FIGS. 7 to 10, as in the case of the example shown in FIGS. 1 to 4, the stability of the climbing crane 1 is improved with a simple structure and no ballast. It can absorb earthquake shaking efficiently, and can be downsized by reducing the overall height.

11 and 12 show a third example of the embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 7 to 10 denote the same components, and the basic configuration is shown in FIG. 7 to FIG. 10, but the features of the illustrated example are as shown in FIG. 11 and FIG.
While the two beams are arranged in parallel in the horizontal direction with a required interval, the gantry beam 12 as a fixed installation member is configured,
A base frame 14 as a mast supporting member is formed into a hollow box-like body, and the gantry beam 12 composed of the two beams arranged in parallel passes through the inside of the base frame 14, and both ends of each beam are the base Projecting from both sides of the frame 14 so as to be fixedly arranged on the base frame 15,
Rolling bearings 18 or sliding bearings 19 as horizontal displacement absorbing means of a plurality of sets (four in the example shown in the figure, a total of eight) arranged to sandwich the mounting beams 12 from above and below the mounting beams 12 A base frame 14 as a mast support member is supported through the laminated rubber support 13,
The mast 2 is erected on the base frame 14 so that the distance between the axial center O of the mast 2 and the positions where the rolling bearings 18 or the sliding bearings 19 and the laminated rubber bearings 13 of the respective groups are arranged is equal.
The load acting on the mast 2 and the overturning moment are received by the compression of the horizontal displacement absorbing means,
Of the horizontal displacement absorbing means arranged above and below, the upper horizontal displacement absorbing means on which a larger compressive force acts is the rolling bearing 18 or the sliding bearing 19, and the compression is smaller than that of the upper horizontal displacement absorbing means. The lower horizontal displacement absorbing means on which the force acts is a laminated rubber bearing 13.

  Also in the example shown in FIGS. 11 and 12, in the state where a simple downward load is applied to the mast 2 of the climbing crane 1, the four pieces arranged above the gantry beam 12 as the fixed installation member. The rolling bearing 18 or the sliding bearing 19 as the horizontal displacement absorbing means is compressed so that the load in the vertically downward direction is supported.

  On the other hand, when a large earthquake occurs and the mast 2 of the climbing crane 1 erected on the base frame 14 as a mast support member is laterally displaced in the horizontal direction, the gantry beam 12 on the fall side of the mast 2 The rolling bearing 18 or the sliding bearing 19 disposed on the upper side is compressed, and the laminated rubber bearing 13 disposed on the lower side of the gantry beam 12 on the reverse side of the mast 2 is compressed. It is possible to absorb earthquake shaking efficiently without applying any tensile force to the rolling bearing 18 or the sliding bearing 19 and the laminated rubber bearing 13 as a directional displacement absorbing means, and the collapse of the climbing crane 1 is avoided. Will be.

  Although the rolling bearing 18 or the sliding bearing 19 and the laminated rubber bearing 13 as the horizontal displacement absorbing means cannot support a tensile force, by adopting a structure such as the example shown in FIGS. 11 and 12, Regardless of the direction in which a load or overturning moment acts, the force can always be received by compression of the rolling bearing 18 or the sliding bearing 19 or the laminated rubber bearing 13.

  Moreover, among the horizontal displacement absorbing means, the upper horizontal displacement absorbing means on which a larger compressive force acts is the rolling bearing 18 or the sliding bearing 19, and a smaller compressive force acts on the upper horizontal displacement absorbing means. By using the laminated horizontal bearing 13 as the lower horizontal displacement absorbing means, the overall height does not become too high, and upsizing of the apparatus can be avoided.

  Thus, in the case of the example shown in FIGS. 11 and 12, as in the case of the example shown in FIGS. 1 to 4 and the example shown in FIGS. 7 to 10, the structure is simple and no ballast or the like is mounted. While increasing the stability of the climbing crane 1, it is possible to efficiently absorb the shaking of the earthquake, and further, it is possible to reduce the overall height and reduce the size.

  Furthermore, in the first example, the second example, and the third example of the embodiment of the present invention described above, the mast 2 is divided into a plurality of mast blocks 2a in the vertical direction as shown in FIG. Flange portions 2b and 2c are formed at the upper and lower end portions of 2a, and an elastic material 38 that urges the flange portions 2b and 2c facing each other in a direction to bring the flange portions 2b and 2c into close contact with each other is interposed. And it can connect by the fastening member 39 which accept | permits the relative displacement to the up-down direction of flange parts 2b and 2c.

  As the elastic member 38, for example, a laminate of a plurality of disc springs, a compression spring, or elastic rubber can be used.

  When configured in this manner, the mast 2 is held in the state shown in FIG. 13A in a state in which a load in the vertical direction is acting on the mast 2 of the climbing crane 1.

  On the other hand, when an earthquake occurs, as shown in FIG. 13 (b), the mast block 2a divided vertically is bent at the flanges 2b and 2c to absorb and dampen the excitation force. Is reduced.

  As a result, if the seismic isolation support device response displacement to be absorbed is shared and borne compared to the case where only the seismic isolation support device using the rolling bearing 18 or the sliding bearing 19 and the laminated rubber bearing 13 is provided alone. Therefore, the height of the seismic isolation support device can be further reduced, which is more effective for downsizing the device.

  In addition, the seismic isolation support device for the crane of the present invention is not limited to the above illustrated example, and the number of sets for disposing the horizontal displacement absorbing means is not limited to four sets, but three sets or more. Any number of sets can be selected as long as they are applicable, and the present invention is not limited to climbing cranes and can be applied to any crane having a mast. Of course, various modifications can be made within the range not to be performed.

It is a perspective view which shows the 1st example of the form which implements this invention. It is a top view which shows the 1st example of the form which implements this invention. It is a sectional side view which shows the 1st example of the form which implements this invention, Comprising: It is the III-III cross-section equivalent figure of FIG. It is a side view which shows the 1st example of embodiment which implements this invention, Comprising: It is the IV-IV arrow equivalent view of FIG. It is a figure which shows the rolling bearing as a horizontal direction displacement absorption means in the 1st example of embodiment which implements this invention, Comprising: (a) is a top view, (b) is equivalent to the bb arrow view of Fig.5 (a). FIG. 5C is a view corresponding to the direction of arrow cc in FIG. It is a side view which shows the sliding bearing as a horizontal direction displacement absorption means in the 1st example of the form which implements this invention. It is a perspective view which shows the 2nd example of the form which implements this invention. It is a top view which shows the 2nd example of the form which implements this invention. FIG. 9 is a side sectional view showing a second example of the embodiment of the present invention, and is a cross-sectional view corresponding to the IX-IX section of FIG. 8. It is a side view which shows the 2nd example of embodiment which implements this invention, Comprising: It is a XX arrow equivalent view of FIG. It is a top view which shows the 3rd example of the form which implements this invention. It is a side view which shows the 3rd example of embodiment which implements this invention, Comprising: It is a XII-XII arrow equivalent view of FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows an example of the connection structure of the mast block in the 1st example of embodiment which implements this invention, a 2nd example, and a 3rd example, (a) is a mast state figure in normal time, (b) is an earthquake It is a mast state diagram at the time of occurrence. It is the schematic which shows an example of the conventional climbing crane. It is a figure which shows the simulation analysis model at the time of the earthquake occurrence of the crane installed through the seismic isolation support apparatus on the high-rise building. It is a diagram which shows the relationship between the seismic isolation support apparatus frequency and crane response acceleration in the simulation analysis model of FIG. It is a diagram which shows the relationship between the seismic isolation support apparatus frequency and the seismic isolation support apparatus response displacement in the simulation analysis model of FIG.

Explanation of symbols

1 Climbing crane (crane)
2 Mast 2a Mast block 2b Flange part 2c Flange part 12 Mounting beam (fixed installation member)
13 Laminated rubber support (horizontal displacement absorbing means)
13a Laminated rubber body 13b Upper flange 13c Lower flange 14 Base frame (mast support member)
14a body part 14b arm block part 15 foundation frame (fixed installation member)
16 Base block (mast support member)
17 Portal frame (fixed installation member)
18 Rolling bearing (horizontal displacement absorbing means)
19 Sliding bearing (horizontal displacement absorbing means)
38 Elastic material 39 Fastening member O Shaft center

Claims (4)

The mast support member integrated with the lower end of the mast is fixed to the base fixed installation member at at least three positions that are equally spaced in the circumferential direction of the mast and radially from the mast axis. Supporting either one of the fixed installation member or the mast support member through a horizontal displacement absorbing means disposed so as to be sandwiched from above and below at a position that becomes an interval,
Configured to receive the load acting on the mast and the overturning moment by compression of the horizontal displacement absorbing means,
Among the horizontal displacement absorbing means arranged above and below, the horizontal displacement absorbing means on either one of the upper and lower sides on which a larger compressive force acts is a rolling bearing or a sliding bearing, and the horizontal displacement on the one side A crane-based seismic isolation support device, characterized in that a horizontal displacement absorbing means on either the upper or lower side on which a compressive force smaller than that of the absorbing means acts is a laminated rubber bearing. The mast support member is composed of at least three or more base blocks projecting radially from the mast lower end portion in the radial direction,
The fixed installation member is composed of a base frame fixedly installed at a lower position of each base block, and a gate-type frame standing in a gate shape on the base frame so that each base block is inserted and arranged. And
2. A rolling bearing or a sliding bearing is interposed between the upper surface of the base frame and the lower surface of each base block, and a laminated rubber bearing is interposed between the upper surface of each of the base blocks and the inner upper surface of the portal frame. Seismic isolation device for cranes. The mast support member is composed of a hollow base frame on which the mast is erected,
The fixed installation member is fixedly disposed on the base frame, the base frame being fixedly installed at a position below the base frame, and the both ends of the base frame projecting outside the base frame. It consists of gantry beams,
The crane according to claim 1, wherein a rolling bearing or a sliding bearing is interposed between the upper surface of the base beam and the upper surface inside the base frame, and a laminated rubber bearing is interposed between the lower surface inside the base frame and the lower surface of the base beam. Seismic isolation support device.   The mast is divided into a plurality of mast blocks in the vertical direction, flange portions are formed at the upper and lower ends of each mast block, and the flange portions facing each other in the vertical direction are biased in a direction in which the flange portions are in close contact with each other The seismic isolation support device for a crane according to any one of claims 1 to 3, wherein an elastic member is interposed and connected by a fastening member that allows relative displacement in the vertical direction between the flange portions.

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