JP2012091897A - Support device of telescopic boom for mounting crane for construction of tower structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize a telescopic boom to construct a high column, by making the telescopic boom be sequentially supported on stacked column members, wherein the telescopic boom is for mounting a crane used for construction of tower structure such as highly-stacked columns and a tower.SOLUTION: A column receiving base 6 is disposed to be movable forward and backward to a mounting base 5 fixed to each boom of the telescopic boom 1, and the column receiving base 6 is provided with a pair of holding arms 7 swinging between a holding position holding the column member 2 and a release position releasing the column member 2. A roller chain 8 is disposed inside the holding arm 7 so that a diameter of the roller chain 8 can be reduced and the roller chain is linked to the holding arm 7. When the column receiving base 6 is moved forward to press against the column member 2, the column member 2 is held by the holding arms 7, and a chain opening/closing cylinder 8a is operated to pull in the roller chain 8 and reduce the diameter thereof, the roller chain 8 tightens up the column member 2, and the boom is supported by the column member 2.

Description

  The present invention has a tower-like structure in which a construction crane used for constructing a tower-like structure that extends to a high position in the sky, such as a column, a tower, and a monument built on the ground, is mounted on the tip portion. The present invention relates to a telescopic boom support device for supporting a telescopic boom for raising and lowering to the top of an object on a support column to be constructed.

  There are various tower-like structures constructed on the ground, such as various towers, monuments, and chimneys, and one of them is a windmill tower that is a column of windmills for wind power generation. At the top of the tower is equipped with a plurality of propeller blades (blades) supported by a horizontal axis, and generators that generate electricity by the rotation of the windmill, heavy objects such as a rotation mechanism that adjusts the direction of the windmill to the windward, and the like Nacelle is installed. Moreover, in order to improve the power generation efficiency stably, it is necessary to receive a strong wind to some extent, and it is desirable to position the top at a position as high as possible. That is, in a windmill tower, it is necessary to extend a top part to a high position as much as possible, and to support a heavy article on the top part. In order to construct this type of tower-like structure, a large crawler crane, a mobile crane (a terrain crane), or the like is generally used.

  By the way, in order to improve power generation efficiency in a wind turbine for wind power generation, as described above, it is required to extend the top of the wind turbine tower to a high position as much as possible. For example, a nacelle or a blade at a height exceeding 100 m, It is required to install a wind turbine body such as a hub. Moreover, when the height is increased, the power generation capacity and the like are increased, the power generation equipment is enlarged, and the weight of the windmill body is increased to 50 t or more. When constructing a 100 m class windmill, it is difficult to unload only about 80 m when the loaded load is 50 t or more with an existing mobile crane, and a large crawler crane is used.

  However, it is difficult for a large crawler crane to secure a carry-in route to the installation place of the tower-like structure. In particular, in the case of a wind turbine for power generation, it is often installed on the coast or in a mountainous area, and in particular in the case of a windmill installed in a mountainous area, it is impossible to secure a carry-in path. For this reason, it is necessary to disassemble the cart and transport it to the installation site. Large crawler cranes have a structure that extends the lattice boom. The lattice boom and caterpillar (registered trademark No. 244746) are also disassembled and transported to the installation site, where the carriage, lattice boom, counterweight, etc. are transported. It needs to be assembled. In addition, as a space for installing the wind turbine for power generation, it is sufficient that the foundation portion supporting the wind turbine tower can be arranged, but when the lattice boom is assembled, it is extended on the ground. Therefore, the space for assembling and disassembling the lattice boom is much larger than the installation space for the wind turbine for power generation. In addition, when installing a wind turbine for power generation, it is common to install a plurality of units side by side. In the case of a large crawler crane, construction of one unit is completed, and then the next adjacent wind turbine for power generation is constructed. Even in such a case, it is necessary to disassemble the lattice boom and reassemble the lattice boom after moving the carriage, which is cumbersome and will extend the work period for assembly and disassembly of the lattice boom. .

  In recent years, various cranes have been developed for the construction of high-rise wind turbines for power generation. For example, there is a crane that can secure a loading path by reducing the width of the carriage as a structure with a large outrigger, but assembly and disassembly of the carriage, lattice boom, counterweight, etc. is necessary, and the work is complicated Is not improved.

  Some cranes are mounted on the uppermost stage of a boom that expands and contracts, and examples of a mechanism structure that expands and contracts the boom include those disclosed in Patent Document 1 and Patent Document 2.

  In addition, the present applicant has proposed a tower-like structure construction method and a construction crane in which the telescopic boom is supported by the constructed part of the tower-like structure to be constructed (Patent Document 3).

Japanese Patent Laid-Open No. 11-301976 International Publication WO2007 / 052339 JP 2009-119392 A

  In the construction crane proposed by the applicant in Patent Document 3 described above, the tower-like structure to be constructed is supported each time the telescopic boom is extended. That is, in a construction method of a tower-like structure in which a pillar whose top is extended to a high position in the sky is piled up while being suspended by a crane while the pillar member is divided into a plurality of pillars, the crane is extended by a telescopic boom. The telescopic boom is connected to the telescopic boom and the post, and is connected to the telescopic boom to fix the telescopic boom to the post. The telescopic boom is stacked according to the height of the stacked post member. The struts are constructed by repeatedly connecting the stacked strut members and the telescopic booms at positions corresponding to the strut members by the connecting means.

  Various mechanisms are conceivable for the connecting means, and the work for connecting the telescopic boom and the support through the connecting means is a work at a high place. For this reason, depending on the mechanism of the connecting means, it is necessary to lift the worker with a crane or the like to perform the work. In the case where the worker performs the linkage work of the linkage means, a crane or the like that lifts the worker is required, and this crane must be carried to the construction site, increasing the number of heavy equipment for construction, There is a risk that the construction work becomes troublesome.

  By the way, it is preferable that the connecting means can perform a connecting operation by remote operation from the ground. Therefore, the present invention relates to the construction of a tower-like structure in which a telescopic boom of a crane is linked to a post constructed by the crane by remote operation from the ground so that the telescopic boom can be supported by the post. It aims at providing the support device of the telescopic boom for crane use.

As a technical means for achieving the above object, a telescopic boom supporting device for mounting a crane for construction of a tower-like structure according to the present invention includes a tower-like structure column whose top is extended to a high position above the sky. In order to build up and build up a plurality of support members, a construction crane for lifting the support members is mounted, and a telescopic boom that lifts the construction crane while extending according to the stacked height of the support members is supported. A telescopic boom supporting device for mounting a crane for construction of a tower-like structure, a mounting base fixed to the telescopic boom, a column receiving base that is movable back and forth to the mounting base, and the column receiving base, A pair of holdings whose base end portions are supported so as to be swingable from an open position for opening the supporting column member to a holding position for holding the supporting column member, with a direction parallel to the axial direction of the supporting column as an axis. A strut tightening means provided on the inner side of the pair of holding arms and capable of further reducing the diameter than the holding arms in the holding position, base advancing / retreating means for moving the strut receiving base forward and backward, Arm swinging means for swinging the holding arm;
The strut tightening means is reduced in diameter and closed, and is provided with opening / closing means that is opened from the reduced diameter position.

  The lowermost column member of the column to be constructed is installed by appropriate means such as a crane. In this case, since it is the lowermost support member, it is not necessary to lift it up to a high place, and it can be operated with a crane or the like that can support the support member during installation work.

  Next, the telescopic boom having the jib crane, which is a construction crane for constructing the support column, mounted on the tip is disposed in a contracted state along the lowermost support member. In this state, the support base is advanced by the base advance / retreat means to a position where the support member can be held by the holding arm. When the support base is advanced to an appropriate position, the arm swinging means swings the holding arm to the holding position, and the support arm is held by the holding arm. Next, by reducing the diameter of the column fastening means by the opening / closing means, the column fastening means is fastened to the column member, and the telescopic boom connected to the holding arm is supported by the column member.

  Thereafter, the second-stage strut members are lifted by the jib crane and stacked on the lowermost strut members, and these are fixed by fixing means such as bolts and nuts. In the same manner as described above, the second-stage boom member is held by the holding arm of the second-stage boom of the telescopic boom and the second-stage boom is tightened by tightening the post-fastening means. It is supported by the second stage strut member.

  That is, while the column members are stacked with the jib crane, the column members that are stacked and fixed to the lower column members are sequentially supported to support the boom extended through the holding arm and the column fastening means. As a result, it is possible to construct a pillar of a tower-like structure.

According to a second aspect of the present invention, there is provided the support device for the telescopic boom for mounting the crane for construction of the tower-like structure, wherein the base advancing / retreating means comprises a pair of piston / cylinder mechanisms fixed to the mounting base. The sliding direction of the piston is substantially parallel and intersects with the longitudinal direction of the telescopic boom, and is provided with advance / retreat guide means for guiding advancement / retraction of the support base.
The substantially parallel direction includes a processing error and a mounting error, and may be any as long as the support base can be advanced and retracted.

  The support base is supported by a piston rod connected to the piston of the piston / cylinder. When the cylinder is operated, the support base is moved back and forth according to the sliding direction of the piston relative to the cylinder. When connecting the telescopic boom to the support member, the support base is advanced toward the support member. As a result, the holding arm is positioned at a position where the holding member can be held. As described above, the holding arm is swung to hold the supporting member, and the supporting member is tightened by the supporting member tightening means. .

  Further, the telescopic boom supporting device for mounting the crane for construction of the tower-like structure according to the invention of claim 3 is characterized in that the arm swinging means comprises a piston / cylinder mechanism disposed on the column support base, The sliding of the piston is converted into a swinging motion, and the holding arm is swung by the swinging motion.

  For example, when the input arm fixed to the rotating shaft is swung by sliding of the piston, the rotating shaft is rotated. By connecting the base end portion of the holding arm to the rotating shaft, the holding arm swings by the rotation of the rotating shaft. For this reason, the sliding direction of the piston can be set to an arbitrary direction. For example, the sliding direction of the piston is set to a direction intersecting with the advancing / retreating direction of the column support base.

According to a fourth aspect of the present invention, there is provided a support device for a telescopic boom for mounting a crane for construction of a tower-like structure, wherein a pair of flexible members is provided by making the column fastening means correspond to the pair of holding arms. The belt-like body is provided with support means for making the belt-like body detachable with respect to the holding arm, and the front-end portions of the belt-like body are detachable. A support means is provided for connecting a portion with the holding arm and allowing the band-like body to be separated from the holding arm when the band-like body is reduced in diameter, and the band-like body is provided at the base end portion of the band-like body. Pulling the body to reduce the diameter, connecting the opening / closing means for releasing the tension state and expanding the band-shaped body, engaging the strut fastening means locking means to connect a pair of band-shaped bodies, The opening / closing means is actuated to pull the band-like body so that the band-like body is separated from the holding arm. It is characterized by tightening the strut member by diameter by.
The appropriate portion means a portion where the strip does not carelessly fall off the holding arm, and the strip can be smoothly detached from the holding arm. It changes also according to the diameter of the support | pillar member etc. which support an expansion-contraction boom by the support apparatus of a boom.

  When the holding arm is swung to hold the column member, the column fastening means locking means is engaged. For example, when the tip of the holding arm abuts, the scissors member arranged at the tip of one holding arm and biased to swing in one direction by a restoring force of a spring or the like is a spring or the like. By oscillating against the restoring force, it is possible to employ a mechanism such as engaging with a collar receiving member disposed at the tip of the other holding arm. When the belt-like body is pulled by operating the opening / closing means in a state where the strut-clamping means locking means is engaged, the belt-like body is closed and reduced in diameter, so that the belt-like body tightens the strut member. Become.

  In order to disengage the holding arm, the opening / closing means is operated to open the belt-like body in the opening direction, that is, to increase the diameter. Next, for example, by swinging one holding arm prior to the other holding arm, the hook member is swung against the restoring force of the spring or the like so as to be detached from the hook receiving member. Constitute. As a result, the engagement between the front ends of the belt-like body and the holding arm is released, and the telescopic boom can be detached from the support member by releasing them.

According to a fifth aspect of the present invention, the telescopic mechanism of the telescopic boom of the crane for construction includes a pair of flexures that can be flexed at a plurality of locations, with the strut tightening means corresponding to the pair of holding arms. The roller chain is detachably attached to the holding arm, and is provided with a column tightening means locking means for allowing the tip portions of the roller chain to be detachable. And a support means for allowing the roller chain to be separated from the holding arm when the diameter of the roller chain is reduced, and the roller chain is provided at a base end portion of the roller chain. Pulling the chain to reduce the diameter, connecting the opening / closing means for releasing the tension state and expanding the roller chain, and engaging the strut tightening means locking means to engage a pair of roller chains Ligated to down, and the allowed switching means is operated to be pulled the roller chain is characterized by tightening the strut member by diameter by leaving the roller chain from holding arm.
The appropriate portion means a portion where the roller chain is not carelessly dropped from the holding arm and the roller chain can be smoothly detached from the holding arm. It changes also according to the diameter of the support | pillar member etc. which support an expansion-contraction boom by the support apparatus of a boom.

  According to a sixth aspect of the present invention, there is provided the support device for the telescopic boom for mounting the crane for construction of the tower-like structure, wherein the support means is configured such that the support tightening means is detached from the holding arm. A column tightening means restoring means for urging the column tightening means in the direction of expanding the diameter so as to return to the state of being engaged with the holding arm is provided.

  By operating the opening / closing means in the direction of expanding the strut tightening means, the tightening of the strut member by the strut tightening means is released and returned to the position where it engages with the holding arm. However, it is possible to smoothly perform the returning operation of the column fastening means by the restoring force of the column fastening means restoring means. That is, when the state in which the column member is clamped by the column clamping unit by the opening / closing unit is released, the column clamping unit expands by the restoring force of the column clamping unit restoring unit and engages with the holding arm. It will be.

  According to a seventh aspect of the present invention, there is provided the support device for the telescopic boom for mounting the crane for construction of the tower-like structure, wherein the support means is supported by the holding arm so as to be swingable, and the guide cylinder. A slide rod that is guided and moved, a support member pressing plate is provided at the tip of the slide rod, a return spring is provided in the guide cylinder, and the direction of the restoring force is determined by the support member pressing plate. The roller chain has a direction of expanding the diameter so as to engage with the holding arm.

  When the roller chain is moved in the closing direction by the opening / closing means to reduce the diameter, the guide cylinder moves while guiding the slide rod while swinging with respect to the holding arm, and advances in a direction protruding from the guide cylinder. To do. For this reason, the roller chain is allowed to be reduced in diameter, and the support member pressing plate is pressed against the support member. At this time, the slide rod guided and moved by the guide cylinder moves forward against the restoring force of the return spring. As the return spring, a spring such as a compression coil spring, a tension coil spring, or a torsion bar can be used.

  According to an eighth aspect of the present invention, there is provided a support device for a telescopic boom for mounting a crane for construction of a tower-like structure, wherein the strut receiving base is connected to the mounting base so as to freely advance and retract, and to the base base It is characterized by comprising a base neck portion that is supported rotatably about a direction parallel to the longitudinal direction of the telescopic boom and that supports the pair of holding arms.

  Since the support base is advanced and retracted with respect to the mounting base, the advancing / retreating direction may be a direction deviated from the direction connecting the axis of the telescopic boom and the axis of the support member. It will not be located at the center of the pair of holding arms, that is, it will not face directly. For this reason, the direction of the pair of holding arms is adjusted by the rotation of the base neck so that the support member is located in the center of the holding arms and faces each other. In addition, since the amount of deviation is not generally large, for example, when the tip of the base neck is brought into contact with the support member, the support member is evenly applied to the edge of the tip by the pressing force at that time. The base neck may be rotated so as to come into contact with.

  Further, the telescopic boom mounting device for mounting the crane for construction of the tower-like structure according to the invention of claim 9 is formed such that the tip end surface of the base neck is substantially overlapped with the outer shape of the column member. It is a feature.

  When a part of the tip surface of the base neck comes into contact with the wall surface of the column member by the advancement of the column support base, the base is arranged so that the tip surface overlaps with the outer shape of the column member around the contact part. The neck portion rotates with respect to the base base portion, and the rotation stops in a state where the tip end surface and the outer shape of the support member overlap each other. In this state, the pair of holding arms faces the support member, and the support member can be held by the pair of holding arms.

  Further, the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 10 reduces the impact at the time of contact between the tip surface and the support member on the tip surface of the base neck portion. It is characterized by providing buffer adjustment means.

  The strut receiving base is advanced, and the impact when the front end surface comes into contact with the wall surface of the strut member is mitigated.

  The support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 11 is characterized in that the base advance / retreat means is connected to each of both ends of the base neck as a pair, and the advance / retreat guide means is A pair of strut member sensors that detect the strut member at the tip of the base neck are provided as a pair and are connected to both ends of the base base, and the pair of strut members is detected according to a signal for detecting the strut member of the strut member sensor. It is characterized by controlling the operation of the base advance / retreat means.

  When the base advancing / retreating means is constituted by, for example, a pair of piston / cylinder mechanisms, the tip of the piston rod connected to the piston is rotatably connected to both ends of the base neck. Further, when the advance / retreat guide means is constituted by, for example, a mechanism that guides the linear movement of the rod by inserting the rod into the guide hole, the tip of the rod is connected to the base base. The base neck rotates with respect to the base base by varying the amount of movement of the pistons of the pair of piston / cylinder mechanisms. For this reason, when one of the support member sensors detects the support member, only the base advancing / retreating means on the other side is operated until the other support member sensor detects the support member. As a result, the strut member is detected by the pair of strut member sensors, and the base neck is in a state of facing the strut member, and the strut member is positioned at the center of the pair of holding arms.

  Since the amount of deviation between the strut member and the telescopic boom is almost insignificant, as described above, if the strut receiving base is advanced and the tip surface of the base neck is brought into contact with the strut member and pressed, The base neck can be slightly rotated with respect to the base base so that the column member can be positioned at the center of the pair of holding arms. However, when the amount of deviation is large, it is necessary to press the base neck against the support member with a large force. At this time, if the amount of deviation is large, a force in an unexpected direction may be applied to the support member. Therefore, the column member is detected by the column member sensor, and only the base advancement / retraction on the side where the column member sensor not detecting the column member is operated is operated, and only the side where the column member sensor is arranged moves forward. By doing so, the base neck can be rotated with respect to the base base, and the support member can be positioned at the center of the holding arm.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the present invention, the support member is held by the pair of holding arms, and the support member is reduced by reducing the diameter of the support fastening means. By tightening, the telescopic boom can be supported by the support member, so that the telescopic boom can be reliably supported by the support member. In addition, the base advancing / retreating means, the arm swinging means, the opening / closing means, and the like can be operated remotely by using a mechanism that is operated by, for example, a hydraulic cylinder.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 2, the holding arm can be surely held at a position where the column member can be held with a simple structure. Can be positioned.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 3, the swinging operation of the holding arm can be performed using a hydraulic cylinder or the like. The support member can be reliably operated, and the support member can be securely held by the holding arm.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 4, the diameter reducing operation of the column fastening means is performed by pulling the base end portion of the column fastening means. Therefore, it can be performed by a simple operation, and control by remote operation becomes easy. In addition, the strut member can be securely tightened by adjusting the tensile force.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 5, since the column fastening means is constituted by the roller chain, the diameter of the column fastening means is easily reduced. In addition, the column tightening means can be made robust and the column member can be securely tightened.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 6, the restoring force of the fastening means restoring means is used when releasing the support fastening means. Therefore, it is possible to quickly release the tightening of the support member and to release the telescopic boom.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 7, the support member can be securely tightened by the support tightening means without inadvertently damaging the support member. it can.

  Further, according to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the eighth aspect of the invention, the base neck can be surely opposed to the support member, and the support member can be placed in the center of the holding arm. Since the telescopic boom and the support member are in a biased state, the support member can be securely held by the holding arm.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the ninth aspect of the invention, the base neck can be directly opposed to the support member by pressing the base neck to the support member. Therefore, the support member can be securely held by the holding arm.

  According to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 10, when the column member is positioned at the center portion of the pair of holding arms, the column receiving base is By moving forward and pressing the base neck against the column member. In addition, since the prop receiving base is moved forward by remote control, the base neck may be pressed against the prop member with a large force inadvertently. At this time, since the pressing force is relieved by the buffer adjusting means, it is possible to prevent the support member from being inadvertently damaged.

  In addition, according to the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the invention of claim 11, the telescopic boom can be more reliably supported by the support member. That is, even when the amount of deviation between the support member and the telescopic boom is large, the support member can be reliably positioned at the center of the holding arm, and therefore the support member can be securely held by the holding arm. Thus, the telescopic boom can be reliably supported by the support member.

It is a top view explaining the structure of the support apparatus of the telescopic boom for crane installation for construction of the tower-shaped structure which concerns on this invention, and has shown the state which has open | released the holding arm. It is a top view explaining the structure of the support apparatus of the telescopic boom for crane installation for construction of the tower-shaped structure which concerns on this invention, closes a holding arm, holds a support | pillar member, and is supported by this support | pillar member It shows the state that was made to. It is a side view which shows the support apparatus of the telescopic boom for crane installation for construction of the tower-like structure concerning this invention, and is a thing of the state shown in FIG. It is a perspective view which shows a part of the attachment base of the telescopic boom mounting apparatus for tower | crane mounting of the tower-like structure which concerns on this invention, and a part of support | pillar receiving base, and has shown the state fixed to the telescopic boom , (A) shows a state in which the column support base is retracted, and (b) shows a state in which the column support base is moving forward. It is a top view which shows one holding arm, and has shown the state before fastening a support | pillar member by support | pillar fastening means. It is a top view which shows one holding arm, and has shown the state which has fastened the support | pillar member by the support | pillar fastening means. It is a side view of a holding arm. In FIG. 5, it is sectional drawing cut | disconnected along the AA line. It is a figure explaining operation | movement of the support apparatus of the telescopic boom for crane installation for construction of the tower-shaped structure which concerns on this invention, and has shown the state before holding a support | pillar member with a holding arm. It is a figure explaining operation | movement of the support apparatus of the telescopic boom for crane installation for construction of the tower-shaped structure which concerns on this invention, and has shown the state which closed one holding arm and held the support | pillar member . It is a diagram for explaining the operation of the support device for the telescopic boom mounted on the crane for construction of the tower-like structure according to the present invention, showing the state in which the other holding arm is closed to hold the column member, (a) is a state immediately before the other holding arm is in contact with the one holding arm, (b) is a state in which the tip of the holding arm is in contact, and (c) is a column tightening means. The state which fastened the support | pillar member is shown. The operation of closing the other holding arm shown in FIG. 11 will be described in the order of (a), (b), and (c). The operation following the operation shown in FIG. 12 will be described in the order of (d) and (e). The operation following the operation shown in FIG. 13 will be described in the order of (f) and (g). The operation of releasing the holding of the support member by the support member and releasing the holding arm from the support member will be described in the order of (a), (b), and (c). The operation following the operation shown in FIG. 15 will be described in the order of (d) and (e). The operation following the operation shown in FIG. 16 will be described in the order of (f) and (g). Side view of the vehicle in the case where the mounting base and the column support base of the telescopic boom mounting device for mounting the crane for construction of the tower-like structure according to the present invention are carried by the vehicle to the construction site of the tower-like structure. It is. It is a top view of the conveyance vehicle shown in FIG. It is a rear view of the conveyance vehicle shown in FIG. It is a side view of the vehicle when the holding arm of the support device for the telescopic boom for mounting the crane for construction of the tower-like structure according to the present invention is carried by the vehicle to the construction site of the tower-like structure. It is a top view of the conveyance vehicle shown in FIG. The steps of constructing the column for mounting the wind turbine for wind power generation while supporting the telescopic boom by the telescopic boom support device for mounting the crane for construction of the tower-like structure according to the present invention are as follows. It is a figure demonstrated in order. It is a figure explaining the procedure following the construction procedure shown in FIG. 23 in order of (c) and (d). It is a figure explaining the procedure following the construction procedure shown in FIG. 24, and is as (e). It is a figure explaining the procedure following the construction procedure shown in FIG. 25 in order of (f) and (g). It is a figure explaining the procedure following the construction procedure shown in FIG. 26 in order of (h) and (i). It is a figure explaining the procedure following the construction procedure shown in FIG. 27 in order of (j) and (k). It is a figure explaining the procedure following the construction procedure shown in FIG. 28 in order of (l) and (m).

  Hereinafter, based on the illustrated preferred embodiment, a telescopic boom support device for mounting a crane for construction of a tower-like structure according to the present invention will be specifically described.

  1 to 3 show the structure of a telescopic boom supporting device for mounting a crane for construction of a tower-like structure according to the present invention, and FIG. 1 shows a state immediately before the telescopic boom 1 is supported by a column member 2. FIG. 2 is a plan view, FIG. 2 is a plan view showing a supported state, and FIG. 3 is a side view.

  The telescopic boom support device 3 is attached to the telescopic boom 1 and fixed thereto, a support base 6 supported so as to be movable back and forth with respect to the mounting base 5, and a support base 6 that is supported by the support base 5. It is mainly composed of a holding arm 7 whose base end is supported so as to be movable.

  The mounting base 5 is detachably attached to a pair of mounting brackets 1p provided on the peripheral surface of the telescopic boom 1. The pair of mounting brackets 1p is disposed at a position of approximately 180 °. The mounting base 5 has a pair of base plates 5a at positions sandwiching the mounting bracket 1p, and the base plate 5a is detachable from the mounting bracket 1p. A part of each of the base plates 5a is provided with a shaft support part 5b that protrudes outward, and the shaft support part 5b swings in the vicinity of the base end part of the base drive cylinder 5c as the base advance / retreat means. It is supported freely. The base drive cylinder 5c is supplied with hydraulic oil from the power cylinder 5d to slide the piston rod 5e.

  The base plate 5a supports a pair of sliding rods 5f as advance / retreat guide means so as to be slidable in directions substantially parallel to each other. A base base portion 6a of the column support base 6 is connected to the tip portions of the pair of sliding rods 5f.

  A central portion of the base neck portion 6c is connected to the central portion of the base base portion 6a so as to be rotatable about the shaft 6b. The tip of the piston rod 5e is rotatably connected to both ends of the base neck 6c on the base base 6a side, that is, the rear side. A rotation shaft 6d is disposed on the front side of both ends of the base neck portion 6c so as to be rotatable with respect to the base neck portion 6c. The base end portion of the swing arm 6e is fitted to the rotation shaft 6d. It is made to wear. Further, the base of the input arm 6f is fitted to the rotating shaft 6d, and the tip of the piston rod 7b of the arm drive cylinder 7a is connected to the tip of the input arm 6f as arm swinging means. . The arm drive cylinder 7a is disposed on the base neck portion 6c, and the sliding direction of the histone rod 7b is a direction intersecting the sliding direction of the sliding rod 5f.

  The front surface of the base neck portion 6c, that is, the column receiving surface 61 on the side facing the column member 2, is formed in a shape that overlaps with the outer shape of the column member 2 to which the base neck portion 6c should be connected, as will be described later. . In addition, the strut receiving surface 61 is provided with an appropriate number of dampers 6g as buffer adjusting means. As will be described later, the impact when the base neck portion 6c contacts the strut member 2 is reduced. In addition, a pair of support member sensors 6h are provided at both ends of the support receiving surface 61, and these support member sensors 6h can detect that the support member 2 has come into contact with the advancement of the base neck 6c. . The strut member sensor 6h receives a detection signal for detecting the strut member 2, adjusts the output of the power cylinder 5d, and controls the forward movement of the base neck portion 6c.

  A holding arm 7R and a holding arm 7L are attached to the respective distal ends of the swing arms 6e. As shown in FIG. 2, the pair of holding arms 7 </ b> R and 7 </ b> L have a shape curved in an arc shape so as to hold the column member 2. Further, when the outer diameter dimension varies depending on the position where the column members 2 are stacked, it is formed in an arc shape having a curvature corresponding to the outer diameter dimension of the column members 2 to be held. Inside the holding arms 7R and 7L, roller chains 8R and 8L are disposed as support means for tightening the columns. At the base ends of these roller chains 8R and 8L, a chain opening / closing cylinder 8a as an opening / closing means is connected to the rotation shaft 6d of the base end so as to be freely rotatable. Roller chains 8R and 8L were used as the column tightening means that can be bent relatively freely to reduce and expand the diameter and secure sufficient strength to securely tighten the column member 2. A belt-like body or the like can be used as long as it is flexible and can securely fasten the column member 2.

  5 to 8 show the holding arm 7R, the roller chain 8R, the arm drive cylinder 7a, etc. FIG. 5 shows that the roller chain 8R is in an expanded state and is engaged with the holding arm 7R. FIG. 6 shows a state where the roller chain 8R is in a reduced diameter state and is detached from the holding arm 7R. 8 is a cross-sectional view taken along line AA in FIG. The structure of the roller chain 8L and the holding arm 7L is substantially the same as the structure of the roller chain 8R and the holding arm 7R, but there is a part with a partly different structure. The other similar parts will be described as a holding arm 7 and a roller chain 8 with subscripts omitted.

  As shown in FIG. 8, the intermediate portion of the holding arm 7 is formed by a pair of square cylindrical arm main bodies 71 that are vertically arranged and curved in an arc shape. The main body 71 is connected. At appropriate positions facing the arm main body 71, a hollow holding shaft 72 is fixed in a state of penetrating the upper and lower arm main bodies 71. A support cylinder 73 constituting support means is disposed at a position where the holding shafts 72 face each other, and a support shaft 73a provided in the vicinity of the head portion of the support cylinder 73 is loosely inserted into the holding shaft 72, and this The support cylinder 73 is swingable about the holding shaft 72. A slide rod 73b is accommodated in the support cylinder 73 so as to freely advance and retract. The support shaft 73a protrudes from the outer surface of the housing 73c, and a linear guide 73d for guiding the slide of the slide rod 73b is accommodated in the housing 73c. Further, a compression coil spring 73e, which is a return spring that constitutes a column tightening means restoring means, is accommodated between the rear end wall of the housing 73c and the flange plate 73f attached to the rear end of the slider rod 73b. . That is, the restoring force of the compression coil spring 73e is urged so as to move the slide rod 73b protruding from the support cylinder 73 in the direction of pulling it back into the support cylinder 73. A connecting member 74 is attached to the tip of the slide rod 73b. The connecting member 74 is provided with a connecting pin 74a whose axis is a direction parallel to the axial direction of the support shaft 73a.

  As shown in FIG. 8, the roller chain 8 is arranged corresponding to each of the pair of arm main bodies 71, and supports the roller 81 with a pair of chain plates 82 so as to be rotatable. The roller 81 is brought into contact with the arm main body 71 so that the roller 81 can roll on the inner side surface of the arm main body 71. A pressing plate 83 is attached to the chain plate 82 corresponding to the position where the support cylinder 73 is disposed as a support member pressing plate. Note that a buffer material such as a rubber plate is attached to the pressing surface of the pressing plate 83. A fork-shaped connecting bracket 84 is fixed to the back surface of the pressing plate, and the connecting pin 74a is rotatably supported by the connecting bracket 84. For this reason, the support cylinder 73 and the pressing plate 83 are connected via the connection pin 74a and the connection bracket 84.

  As shown in FIGS. 5, 6, 13, 14, 15, and 17, the roller chain 8 </ b> R and the roller chain 8 </ b> L are respectively provided with fastening means locking means on the roller chain 8 </ b> R side. On the roller chain 8L side, the hook member 85 that constitutes the hook member 85 that constitutes a fastening means by being engaged with and disengaged from the hook member 85 is provided. The flange member 85 and the flange receiving member 86 swing about the swing shaft 85a and the swing shaft 86a, respectively, where the base ends are supported, so that the distal ends are engaged and disengaged. Further, the torsion coil springs 85c and 86c provided around the swinging shaft 85a and the swinging shaft 86a so as to swing the hook member 85 and the hook receiving member 86 respectively outward are restored. Power is energized. Further, a stopper 85b and a stopper 86b are attached to the respective leading end portions of the holding arms 7R and 7L, and when the roller chains 8R and 8L are in a diameter-expanded state, the hook member 85 and the hook receiver The member 86 abuts and is prevented from further swinging outward. For example, as shown in FIG. 13 (d), a hook member position sensor 85d and a hook receiving member position sensor 86d for detecting that the hook member 85 and the hook receiving member 86 are in the engaged positions are provided. It is preferable to detect that the hook member 85 and the hook receiving member 86 are in a position where they are engaged. It is also preferable to provide an arm position sensor 87 for detecting that the holding arms 7L and 7R are positioned at the holding position holding the support column member 2 in order to ensure the operation described later.

  18 to 22 show a transport vehicle that carries the telescopic boom support device 3 into the construction site of the wind turbine tower of the wind turbine for power generation. FIGS. 18 to 20 show the mounting base 5 and the strut receiving base. 6 and FIG. 21 show a transport vehicle 12 on which a base neck portion 6c and a holding arm 7 are loaded. In this manner, the mounting base 6 and the base base 6a of the column receiving base 6 are loaded on one transport vehicle, and the base neck 6c and the holding arm 7 are loaded on one transport vehicle, thereby transporting them. The vehicle can travel on the public road to the construction site. In FIGS. 18 to 22, five telescopic boom support devices 3 are shown as being transported. However, if the required telescopic boom support devices 3 increase according to the height of the wind turbine tower and the number of stages of the telescopic booms. This can be dealt with by increasing the number of transport vehicles. Furthermore, if necessary, the base neck 6c and the holding arm 7 can be disassembled and transported.

  The construction for constructing the wind turbine tower using the telescopic boom support device 3 configured as described above will be described with reference to FIGS.

  The telescopic boom support device 3 and the holding arm 7 are carried into the construction site of the windmill tower by the transport vehicle 11 and the transport vehicle 12, respectively. Further, the support member 2 is also carried into the construction site, and the telescopic boom 1 is also carried by the transport carriage 13. Further, when the wind turbine tower is constructed, the auxiliary crane 14 is used to install the first-stage column member 2a which is the lowest part.

  As shown in FIG. 23 (a), the first stage column member 2 a is installed using the auxiliary crane 14. Next, as shown in FIG. 24 (c), the mounting base 5 loaded on the transport vehicle 11, the column receiving base 6, and the holding arm 7 loaded on the transport vehicle 12 are incorporated in the transport cart 13. The telescopic boom 1 is attached using the auxiliary crane 14. That is, by attaching the attachment base 5 to the attachment bracket 1 p of the telescopic boom 1, the attachment base 5 and the base base portion 6 a of the column receiving base 6 are attached to the telescopic boom 1. When the base neck 6c is connected to the base base 6a by the shaft 6b, and the tip of the piston rod 5e is connected to both ends of the base neck 6c, the telescopic boom support device 3 is attached to the telescopic boom 1. . In addition, since the telescopic boom 1 is what is called a telescopic system, and the outer diameter dimensions of each step differ, the telescopic boom support apparatus 3 according to the telescopic boom 1 of each step is attached. Further, the outer diameter dimension of the column member 2 to be supported by the attached telescopic boom support device 3 corresponds to the size suitable for holding by the holding arm 7 of the telescopic boom support device 3.

  Next, as shown in FIG. 24 (d), the telescopic boom 1 to which the telescopic boom support device 3 is attached is erected to an appropriate angle on the transport carriage 13 using the auxiliary crane 14, and then the transport cart 13 Stand up to a nearly vertical position with the boom upright cylinder installed in In this state, the boom 1a is supported on the first-stage support member 2a by the telescopic boom support device 3 attached to the first-stage boom 1a of the telescopic boom 1.

  Here, the operation of supporting the first-stage boom 1a of the telescopic boom 1 to which the telescopic boom support device 3 is attached to the first-stage column member 2a will be described.

  As shown in FIG. 1, the holding arms 7R and 7L are in an expanded state. In this state, the power cylinder 5d is operated to advance the support column base 6 with respect to the mounting base 5, and the support column base 6 is brought close to the first-stage support member 2a. At this time, the base neck portion 6c is pushed by the piston rod 5e of the base drive cylinder 5c, and the base base portion 6a is accompanied by the base neck portion 6c, and the sliding rod 5f is guided to advance.

  By the advancement of the base neck portion 6c, the support member sensors 6h arranged at both ends of the support member receiving surface 61 come into contact with the outer peripheral surface of the support member 2a to detect that the support member 2a exists. To do. At this time, if the strut member sensors 6h at both ends detect the strut member 2a at the same time, the strut member 2a is located at the substantially central portion of the holding arms 7R and 7L and is facing each other. . On the other hand, when the column member 2a is detected only by any one column member sensor 6h, the base neck portion 6c is not directly facing the column member 2a, and the column member sensor 6h that detects the column member 2a The power cylinder 5d on the same side as the arranged end is stopped and the operation of the power cylinder 5d on the opposite side is continued. As a result, while the base neck portion 6c rotates about the shaft 6b with respect to the base base portion 6a, the side on which the column member sensor 6h that does not detect the column member 2a is disposed moves forward. If the strut member sensor 6h detects the strut member 2a by this advance, the power cylinder 5d is stopped and the advance of the piston rod 5e is stopped. In this state, the column receiving surface 61 is in a state of facing the column member 2a. Therefore, the power cylinder 5d is operated again to advance the base neck portion 6c. As shown in FIG. 1, the power cylinder 5d is stopped when the damper 6g received also on the column receiving surface 61 comes into contact with the column member 2a. As shown in FIG. 1, the power cylinder 5d may be stopped in a state in which the support member sensor 6h is pressed and pressed into the support receiving surface 61.

  As shown in FIG. 9, when the support receiving surface 61 of the base neck 6c is pressed by the support member 2a, the support member 2a is held by the holding arm 7. This operation will be described with reference to FIGS. As shown in FIG. 10, first, the holding arm 7L on which the collar receiving member 86 is arranged is swung so that the support member 2a is held only by the holding arm 7L. Next, as shown in FIG. 11A, the holding arm 7R on which the flange member 85 is disposed is swung to hold the support member 2a. FIG. 11A shows a state immediately before the holding arm 7R holds the column member 2a, and the front ends of the holding arms 7L and 7R at this time are shown in FIG. 12A. When the tip of the holding arm 7R is brought closer to the tip of the holding arm 7L from this state as shown in FIG. 12 (b), the hook member 85 is moved into the hook as shown in FIG. 12 (c). It contacts the receiving member 86. Further, as shown in FIG. 13 (d), when the holding arm 7R swings, the hook member 85 is positioned at a position where it can get over the hook receiving member 86 and engage with it. In this state, the chain opening / closing cylinder 8a is operated to draw the roller chains 8L and 8R toward the chain opening / closing cylinder 8a. For this reason, as shown in FIG. 13 (e), the collar member 85 engages with the collar receiving member 86, and as shown in FIG. 14 (f), the roller chain 8L and the roller chain 8R are integrated. It will be.

  When the roller chain 8L, 8R is pulled by the operation of the chain opening / closing cylinder 8a in a state where the collar member 85 and the collar receiving member 86 are engaged, these roller chains 8L, 8R are shown in FIG. 14 (g). Thus, the diameter is reduced. By this diameter reduction operation, the pressing plate 83 attached to the roller chains 8L and 8R is pressed against the peripheral wall surface of the column member 2a, and the roller chain 8 tightens the column member 2a. For this reason, the telescopic boom support device 3 provided with the roller chain 8 is fixed to the column member 2a, and the boom 1a having the first section to which the mounting base 5 of the telescopic boom support device 3 is mounted is attached to the column member 2a. Will be supported.

  By the way, when the diameter of the roller chain 8 is reduced, the slide rod 73b connected to the pressing plate 83 provided on the roller chain 8 by the connecting pin 74a resists the restoring force of the compression coil spring 73e. It is pulled out and slides inside the support cylinder 73 to advance. Moreover, since the support cylinder 73 is rotatably supported by the arm main body 71 by the support shaft 73a, the support cylinder 73 is allowed to swing, and the slide rod 73b can be smoothly advanced. That is, the pressing plate 83 moves while being guided by the slide rod 73b, and securely presses and supports the support member 2a.

  FIG. 25 (e) shows a state in which the first-stage boom 1a of the telescopic boom 1 is supported on the first-stage support member 2a, and a jib crane 15 which is a construction crane separately carried in this state. Is supported on the tip of the telescopic boom 1 using the auxiliary crane 14. Next, as shown in FIG. 26 (f), the second-stage boom 1 b of the telescopic boom 1 is extended. A guy rope 15a is stretched between the jib crane 15 and the transport carriage 13 of the telescopic boom 1 so as to balance the direction and inclination of the jib crane 15.

  When the second-stage boom 1b of the telescopic boom 1 is extended, as shown in FIG. 26 (g), the second-stage column member 2b is used as the first-stage column member by using the jib crane 15. Place on 2a. These strut members 2a, 2b are provided with inward flanges (not shown) inside, and the inward flange at the top of the strut member 2a and the inward flange at the bottom of the strut member 2b are fastened with bolts, nuts, etc. The second-stage column member 2b is fixed to the first-stage column member 2a. Next, similarly to the above-described operation, the boom 1b is supported on the second-stage column member 2b by the telescopic boom support device 3 provided on the second-stage boom 1b. As a result, the first and second booms 1a and 1b of the telescopic boom 1 are supported by the first and second stage support members 2a and 2b, respectively.

  Then, as shown in FIGS. 27 to 29, the support member is stacked on the existing support member by the jib crane 15, and the boom extended by the telescopic boom 1 is applied to the uppermost support member 2 e by the telescopic boom support device 3. The wind turbine tower 20 is completed as shown in FIG. 29 (m) by sequentially repeating the supporting operation, and the nacelle 21 is placed on the wind turbine tower 20 by the jib crane 15. Further, a blade (not shown) is lifted and installed by the jib crane 15.

  When the construction of the windmill tower 20 is completed, the telescopic boom 1 is contracted and removed. The contraction operation of the telescopic boom 1 will be described below.

  15 to 17 show an operation of releasing the tightening of the column member 2. FIG. 15A shows a state in which the column member 2 is fastened by the roller chain 8, which is the same as the state shown in FIG. 14G. In this state, the chain opening / closing cylinder 8a is operated to push back the roller chain 8 so that its diameter is increased. As a result, the diameter of the roller chain 8 is increased, and the tightening of the column member 2 is released as shown in FIG. Further, when the chain opening / closing cylinder 8a is operated to further expand the diameter of the roller chain 8, as shown in FIG. 15C, the collar receiving member 86 comes into contact with the stopper 86b, and the roller chain 8L It becomes a state where the diameter cannot be further increased. On the other hand, the roller chain 8R slightly increases in diameter even after the diameter of the roller chain 8L is blocked, and comes into contact with the stopper 85b. In this state, when the chain opening / closing cylinder 8a is further operated in the direction of expanding the diameter of the roller chain 8, the roller chain 8 is restrained by the stoppers 85b and 86b. By moving in this direction, the hook member 85 moves so as to be disengaged from the hook receiving member 86 as shown in FIG. Further, when the roller chain 8 is moved in the above-described direction, the trunk portion of the flange member 85 is pressed against the flange receiving member 86, so that the flange receiving member 86 swings toward the side of reducing the diameter around the swing shaft 86a. Thus, the engagement between the eaves member 85 and the eaves receiving member 86 is released. In addition, the flange member 85 and the flange receiving member 86 are urged to swing outward by the restoring force of the torsion coil springs 85c and 86c, as shown in FIG. The hook member 85 and the hook receiving member 86 are maintained in a disengaged state.

  And as shown in FIG.16 (e), the holding arm 7R is rock | fluctuated and it expands from the position which holds the support | pillar member 2. As shown in FIG. Accordingly, as shown in FIGS. 17 (f) and 17 (g), when the holding arm 7 </ b> R is expanded and then the holding arm 7 </ b> L is expanded, the holding state of the column member 2 by the holding arm 7 is changed. Canceled.

  In a state where the holding arm 7 is expanded, the base drive cylinder 5c is operated to retract the support column base 6. Thereby, it will be in the state by which the connection of the telescopic boom 1 and the support | pillar member 2 was cancelled | released, and it will be in the state which can shrink | contract the telescopic boom 1. FIG.

  When the telescopic boom 1 is contracted and the jib crane 15 is suspended by the auxiliary crane 14 by sequentially performing the above releasing operation from the upper part of the telescopic boom 1, the telescopic boom 1 is loaded on the transport carriage 13. be able to.

  According to the telescopic boom supporting device for mounting a crane for construction of a tower-like structure according to the present invention, the telescopic boom can be stably supported by supporting the telescopic boom on the column of the tower-like structure to be constructed. By installing this jib crane, it becomes easy to construct with the column extended to a higher position than before, and it is easy to carry the telescopic boom support device by the vehicle. Can contribute to construction.

1 Telescopic boom
1a First stage boom
1b Second stage boom
1c 3rd stage boom
1d 4th stage boom
1e 5th stage boom
1p Mounting bracket 2 Prop member
2a First stage strut member
2b Second-stage strut member
2c 3rd stage column member
2d 4th stage column member
2e 5th stage support member 3 Telescopic boom support device 5 Mounting base
5c Base drive cylinder (base advance / retreat means)
5e Piston rod
5f Sliding rod (advance / retreat guide)
6 Prop receiving base
6a Base base
6b axis
6c base neck
6g damper (buffer adjustment means)
6h Prop member sensor
61 Prop receiving surface 7, 7R, 7L Holding arm
7a Arm drive cylinder (arm swinging means)
7b Piston rod
71 Arm subject
72 Holding shaft
73 Support cylinder (support means)
73a Support shaft
73b Slide rod
73c housing
73d flange plate
73e Compression coil spring (Tightening means restoration means)
74 Connecting members
74a Connecting pin 8, 8R, 8L Roller chain (post tightening means)
8a Chain open / close cylinder (open / close means)
81 Laura
82 Chain plate
83 Press plate
84 Connecting bracket
85 Scissors (tightening means locking means)
85a Oscillating shaft
85b stopper
85c torsion coil spring
86 鈎 Receiving member (Tightening means locking means)
86a Oscillating shaft
86b stopper
86c Torsion coil spring
11 Transport vehicle
12 Transport vehicle
13 Transport cart
14 Auxiliary crane
15 Jib crane (construction crane)
15a guy rope
20 Windmill Tower

Claims (11)

In order to build up a tower-like structure column whose top is extended to a high position above the sky by stacking a plurality of column members, a construction crane for lifting the column members is mounted, and the height of the column members is increased. In order to support the telescopic boom for lifting the construction crane while extending in response, the telescopic boom mounting device for mounting the construction crane on the tower-like structure,
A mounting base fixed to the telescopic boom;
A strut support base which is movable back and forth in the mounting base;
A pair of base end portions are supported on the support base so as to be swingable from an open position for opening the support member to a holding position for holding the support member, with a direction parallel to the axial direction of the support column as an axis. A hug arm,
A column fastening means provided inside the pair of holding arms and capable of being further reduced in diameter than the holding arms in the holding position;
Base advancing / retreating means for advancing / retreating the prop receiving base;
Arm swinging means for swinging the holding arm;
A support device for a telescopic boom for mounting a crane for construction of a tower-like structure, comprising: an opening / closing means that closes and closes the column tightening means and opens the diameter-reducing position from the reduced diameter position. .   The base advancing / retreating means includes a pair of piston / cylinder mechanisms fixed to the mounting base, and the sliding direction of the pair of pistons is substantially parallel and intersects the longitudinal direction of the telescopic boom. 2. The telescopic boom supporting device for mounting a crane for construction of a tower-like structure according to claim 1, further comprising advance / retreat guide means for guiding advance / retreat of the base.   The arm swinging means is composed of a piston / cylinder mechanism disposed on the support column receiving base, converts the sliding of the piston into a swinging motion, and swings the holding arm by the swinging motion. 3. A telescopic boom support device for mounting a tower-like structure construction crane according to claim 1 or 2. The strut tightening means is made to correspond to the pair of holding arms, and is formed by a pair of flexible strips,
The strip is removable from the holding arm,
Provided strut tightening means locking means that can freely engage and disengage the front ends of the belt-like body,
An appropriate portion of the belt-like body is connected to the holding arm, and support means is provided that allows the belt-like body to be separated from the holding arm when the diameter of the belt-like body is reduced.
To the base end portion of the band-shaped body, the opening and closing means for pulling the band-shaped body to reduce the diameter, releasing the tension state and expanding the band-shaped body, are linked,
By engaging the strut tightening means locking means to connect a pair of belt-like bodies, operating the opening / closing means to pull the belt-like body and releasing the belt-like body from the holding arm to reduce the diameter. The support device for the telescopic boom for mounting a crane for construction of a tower-like structure according to any one of claims 1 to 3, wherein the support member is tightened. The strut tightening means is formed of a pair of roller chains provided with bending portions that can be bent at a plurality of locations, corresponding to the pair of holding arms,
The roller chain is detachable from the holding arm,
Prop tightening means locking means for freely disengaging the tip ends of the roller chain is provided,
An appropriate portion of the roller chain is connected to the holding arm, and support means is provided to allow the roller chain to be separated from the holding arm when the diameter of the roller chain is reduced.
To the base end of the roller chain, the roller chain is pulled to reduce the diameter, and the opening / closing means for expanding the diameter of the roller chain by releasing the tension state is linked,
Engaging the strut tightening means locking means to connect a pair of roller chains, operating the opening / closing means to pull the roller chain, detaching the roller chain from the holding arm and reducing the diameter. The support member for the telescopic boom for mounting a crane for construction of a tower-like structure according to any one of claims 1 to 3, wherein the support member is fastened by means of.   The support means is urged in the direction of expanding the strut tightening means so that the strut tightening means is returned from the state of being detached from the holding arm to the state of being engaged with the holding arm. 6. The support device for a telescopic boom for mounting a tower-like structure construction crane according to claim 4 or 5, further comprising a column tightening means restoring means. The support means includes a guide cylinder swingably supported by the holding arm, and a slide rod that moves while being guided by the guide cylinder,
A support member pressing plate is provided at the tip of the slide rod,
The return spring is provided in the guide cylinder, and the direction of the restoring force is a direction in which the diameter of the roller chain is increased so that the support member pressing plate is engaged with a holding arm. The support apparatus of the telescopic boom for crane installation for construction of the tower-like structure of Claim 5 or Claim 6.   The strut receiving base is supported by a base base that is connected to the mounting base so as to be movable forward and backward, and is rotatably supported by the base base around a direction parallel to the longitudinal direction of the telescopic boom. The support device for a telescopic boom for mounting a crane for construction of a tower-like structure according to any one of claims 1 to 7, comprising a base neck portion that is supported.   9. The telescopic boom support device for mounting a crane for construction of a tower-like structure according to claim 8, wherein the tip end surface of the base neck portion is formed in a shape that substantially overlaps the outer shape of the column member.   10. The tower-like structure according to claim 8, wherein a buffer adjusting means for reducing an impact at the time of contact between the tip surface and the support member is disposed on a tip surface of the base neck portion. A telescopic boom support device for loading cranes for construction of objects.   The base advancing / retreating means is connected as a pair to each of both ends of the base neck, and the advancing / retreating guiding means is connected as a pair to each of both ends of the base base so as to detect a column member at the tip of the base neck. 11. The support member sensor according to claim 8, further comprising: controlling the operation of the pair of base advance / retreat means in response to a signal for detecting the support member of the support member sensor. The telescopic boom mounting apparatus for crane installation for construction of the tower-like structure of description.

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