JP2010222927A - Apparatus for erecting tower-like structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dispense with the installation of a guide rail and a post in a main tower of a bridge. <P>SOLUTION: Both ends of a main jib 3 are derrickably connected to brackets 12, which are provided in two base units 2a and 2b equipped with a slewing function and a function of mounting a main tower block 11 on a downside, via a removable connecting pin 13, respectively. Auxiliary jibs 4a and 4b are provided on an upside near both the ends of the main jib 3. A wire rope 8a of a winch unit 6a on the one base unit 2a is bound to the other end of the main jib 3 via a leading end of an auxiliary jib 4a. A wire rope 8b of a winch unit 6b on the other base unit 2b is bound to the one end of the main jib 3 via a leading end of an auxiliary jib 4b. In a state in which one of the base units 2a and 2b is alternately mounted on the top portions of the main towers 14a and 14b of the bridge, the main tower block 11 is alternately erected on each of the main towers 14a and 14b by means of the other one of the base units 2a and 2b, which is disconnected from the ends of the main jib 3. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an installation apparatus for a tower-like structure that is used to construct the tower-like structure divided blocks when the tower-like structure is constructed by sequentially stacking the tower-like structure division blocks.

  When constructing a main tower of a steel bridge, for example, a main tower of a suspension bridge, a construction method is used as a construction material, for example, a main tower block as a steel divided block is sequentially stacked from the lower layer. As the erection means used for laying so as to stack the main tower block of the seed, the height of the main tower of the suspension bridge to be constructed is relatively low, and the height position where the main tower block is stacked is relatively low, When the weight of the main tower block to be erected is relatively light and the weight that needs to be lifted is relatively light, the above main tower block is generally constructed using a crawler crane or a floating crane. Many things have been done.

  On the other hand, when the height of the main tower of the suspension bridge to be constructed is high and it is necessary to lift the main tower block to a high place, or when the weight of the main tower block to be lifted is heavy As a means, the main tower block is often installed by using a creeper crane that lifts the crane along a vertical guide rail attached to the main tower body (for example, Patent Documents). 1).

  Furthermore, when constructing a tower structure with a high height, as another construction means used for lifting and erection of steel divided blocks as a construction material, independent construction along the tower structure is possible. It has also been conventionally proposed to use a climbing crane of a type in which a post (mast) is provided so that the crane rises along the post (see, for example, Patent Document 2).

JP 56-1119080 A JP-A-5-286694

  However, when constructing a tower-like structure with a high height such as a main tower of a suspension bridge, a creeper crane as shown in Patent Document 1 is used as a construction means for constructing a divided block as a construction material. In this case, since it is necessary to provide a guide rail and its accessory equipment for the main tower main body, there is a problem that the work becomes complicated, and there is a concern that the main tower main body may be damaged.

  In addition, when a climbing crane as shown in Patent Document 2 is used as a means for laying the divided block of the tower-like structure, the cost is increased if it is newly manufactured for the construction of the tower-like structure. In addition, the higher the height of the tower-like structure to be constructed, the higher the required post height, and the higher the cost for the construction of the post.

  Therefore, the present invention does not need to provide a rail for raising and lowering the crane in the tower-like structure itself when the tower-like structure is constructed by erection so that the divided blocks of the tower-like structure are sequentially stacked. It is another object of the present invention to provide a tower-like structure erection device that can eliminate the need for installation of a post independent of the tower-like structure and can reduce the cost.

  In order to solve the above-mentioned problems, the present invention has a swiveling function and a function of attaching a divided block of the tower-like structure for constructing the tower-like structure to the lower surface and suspending it corresponding to claim 1. Two gantry units are provided corresponding to adjacent tower structures, respectively, and are detachably attached to the tops of the divided blocks of the corresponding tower structures, and both longitudinal ends are attached to the gantry units. In the state where the main jib is detachably attached to the bracket provided through the connecting pin so as to be detachable, and the longitudinal end of the main jib is connected to the bracket of the one gantry unit in a undulating manner. A winch unit for lifting and lowering the other gantry unit, which has been disconnected from the other longitudinal end of the main jib, from the other longitudinal end of the main jib via a wire rope. And the other gantry unit with the other end in the longitudinal direction connected to the bracket of the other gantry unit in a undulating manner, the one gantry unit that has been disconnected from the longitudinal end of the main jib It is set as the structure which comprises another winch unit for lifting / lowering from a longitudinal direction one end part of a jib via another wire rope.

  In the above configuration, the winch unit for lifting and lowering the other gantry unit, which has been disconnected from the other end in the longitudinal direction of the main jib, from the other end in the longitudinal direction of the main jib via the wire rope, Another winch for lifting and lowering one gantry unit, which is provided on the gantry unit and disconnected from the longitudinal end of the main jib, from the longitudinal end of the main jib via another wire rope The unit is provided on the above-described one gantry unit.

  Further, in the above configuration, the winch unit provided on the other gantry unit with auxiliary jibs each capable of changing the rotation posture in the vertical direction with respect to the main jib on the upper side in the vicinity of both ends in the longitudinal direction of the main jib. The wire rope to be unwound is hung around the jib tip sheave block at the auxiliary jib tip provided near the other end in the longitudinal direction of the main jib, and then bound to a required portion at one longitudinal end of the main jib. In addition, after another wire rope that is unwound from another winch unit provided on one gantry unit is hung on the jib tip sheave block of the auxiliary jib tip provided near the longitudinal end of the main jib. The main jib is configured to be attached to a required portion at the other end in the longitudinal direction.

  In each of the above-described configurations, an expansion / contraction mechanism for expanding / contracting the entire length of the main jib is provided in the longitudinal middle portion of the main jib.

According to the tower-like structure erection device of the present invention, the following excellent effects are exhibited.
(1) Two gantry units each having a swiveling function and a function of attaching and suspending the divided block of the tower-like structure to construct the tower-like structure are provided corresponding to the adjacent tower-like structures. In addition, it can be detachably attached to the tops of the divided blocks of the corresponding tower-like structures, and both end portions in the longitudinal direction can be detachably attached to the brackets provided in the above-mentioned gantry units via connecting pins. A main jib attached to the bracket, and the other end of the main jib that has been disconnected from the other longitudinal end of the main jib in a state in which the longitudinal end of the main jib is connected to the bracket. A winch unit for lifting and lowering the gantry unit from the other longitudinal end of the main jib via a wire rope, and a bracket for the other gantry unit. With the other end in the longitudinal direction connected in an undulating manner, the one gantry unit that has been disconnected from the one end in the longitudinal direction of the main jib is connected to another end of the main jib in the longitudinal direction via another wire rope. Since it is configured to include another winch unit for lifting and lowering, at the construction site of a plurality of tower-like structures, with one gantry unit attached to the top of a certain tower-like structure, The other end in the longitudinal direction of the main jib that connects and supports one end in the longitudinal direction to the one gantry unit and the other gantry unit are suspended from the other end in the longitudinal direction by releasing the connection between the other gantry unit. The divided block of the tower-like structure attached to the lower side of the other gantry unit can be installed on another tower-like structure. Thereafter, the other longitudinal unit of the main jib is connected to and supported by the other gantry unit mounted on the divided block installed on the other tower-like structure, and in this state, the longitudinal length of the main jib By disconnecting the one end portion in the direction and one of the gantry units, the divided block of the tower structure is provided below the one gantry unit suspended from the one end portion in the longitudinal direction of the main jib. Or a further tower-like structure. Accordingly, each of the above-mentioned gantry units is alternately used as a gantry unit for connecting and supporting the main jib and a gantry block for suspending the divided unit of the tower-like structure from the end on the free end side of the main jib. Thus, the plurality of tower-like structures can be constructed while sequentially replacing the gantry unit for connecting and supporting the main jib between the plurality of tower-like structures.
(2) Therefore, when the divided blocks of the tower structure are installed, a plurality of tower structures are provided with vertical rails, or independent posts are installed in addition to the tower structures. Therefore, even if the height of the plurality of tower-like structures to be constructed is high, it is possible to prevent the possibility of a significant increase in cost and to reduce the construction cost. .
(3) A winch unit for lifting and lowering the other gantry unit released from the other end in the longitudinal direction of the main jib from the other end in the longitudinal direction of the main jib via a wire rope, Another winch unit for lifting and lowering one gantry unit, which is provided on the upper end and disconnected from one end in the longitudinal direction of the main jib, from one end in the longitudinal direction of the main jib via another wire rope By adopting a structure that is provided on one of the gantry units, the gantry unit on the side where the connection with the both ends in the longitudinal direction of the main jib is released is wound on the wire rope by the winch unit on the gantry unit. And the structure which raises / lowers by unwinding is easily realizable.
(4) Auxiliary jibs whose rotational orientation can be changed in the vertical direction with respect to the main jib are respectively provided on the upper side in the vicinity of both longitudinal ends of the main jib, and are unwound from a winch unit provided on the other gantry unit. The wire rope is hung on the jib tip sheave block of the auxiliary jib tip provided near the other end in the longitudinal direction of the main jib, and then attached to a required portion at one end of the main jib in the longitudinal direction. A separate wire rope that is unwound from another winch unit provided on the gantry unit is hung on the jib tip sheave block of the auxiliary jib tip provided near one longitudinal end of the main jib, and then the main jib When the wire rope from the winch unit on each gantry unit is used for raising and lowering the main jib In addition, the rotation posture of each auxiliary jib with respect to the main jib is properly used based on the function of changing the angle of each auxiliary jib with respect to the main jib in two different applications when used for lifting and lowering each gantry unit. Thus, the wire rope line from each winch unit can be freely changed. Therefore, for example, when lifting the corresponding gantry unit from one end or the other end in the longitudinal direction of the main jib, the distance to the wire rope turning point on the one end or the other end in the longitudinal direction of the main jib is set. The auxiliary jib can be stretched, and when the main jib is undulated with the wire rope from each winch unit, the wire rope can be unwound vertically from each winch unit. It can be used in the above two different applications.
(5) Arrangement of each gantry unit attached to both ends of the main jib in the longitudinal direction by providing an expansion / contraction mechanism for expanding and contracting the entire length of the main jib in the middle portion of the main jib in the longitudinal direction By making the interval correspond to the arrangement interval in the horizontal direction between the plurality of tower-like structures and the arrangement interval between the tops of the plurality of tower-like structures having different height dimensions for at least one divided block, The longitudinal direction of the main jib that is supported by connecting one end in the longitudinal direction to one of the gantry units that are individually attached to any one of the tower-like structures After connecting the other end of the main jib to the other gantry unit, the one end in the longitudinal direction of the main jib is disconnected from the one gantry unit and the main jib is connected to the other gantry unit. Work to support It can be performed easily and reliably.

It is a schematic side view which shows one Embodiment of the installation apparatus of the tower-like structure of this invention. It is a side view which expands and shows the part of one base unit in the construction apparatus of FIG. It is an AA direction arrow line view of FIG. 1 shows a procedure for installing a main tower block using the installation apparatus shown in FIG. 1 when constructing a main tower of a suspension bridge. A new main tower block is mounted on the other main tower adjacent to the top of one main tower. FIG. 5 is a schematic side view showing a state in which the other gantry unit can be lifted and hung from the main jib for placement. FIG. 5 is a schematic side view showing a procedure following FIG. 4 in the construction procedure of the main tower block using the construction apparatus of FIG. 1 and showing a state in which a new main tower block is placed on the other main tower. FIG. 6 shows the procedure following FIG. 5 in the installation procedure of the main tower block using the installation apparatus of FIG. 1, and the longitudinal direction of the main jib on the other gantry unit on the new main tower block attached on the other main tower It is a schematic side view which shows the state which connected the other end part. FIG. 7 shows the procedure following FIG. 6 in the construction procedure of the main tower block using the construction apparatus of FIG. 1, for placing a new main tower block on one main tower adjacent from the top of the other main tower. FIG. 5 is a schematic side view showing a state in which one of the gantry blocks can be lifted and hung from the main jib. FIG. 9 is a schematic side view showing a procedure following FIG. 7 in the main tower block erection procedure using the erection apparatus of FIG. 1, with a new main tower block placed and connected on one main tower. is there. FIG. 9 shows the procedure following FIG. 8 in the construction procedure of the main tower block using the construction apparatus of FIG. 1, and the longitudinal direction of the main jib on one gantry unit on the new main tower block attached on one main tower It is a schematic side view which shows the state which connected the one end part. FIG. 10 is a schematic side view showing the procedure following FIG. 9 in the procedure for installing the main tower block using the installation device of FIG. 1 and showing the same state as that shown in FIG. 4.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 to FIG. 10 show a case where a main tower of a suspension bridge is constructed by building up a main tower block as a divided block of the tower structure as one embodiment of the tower structure erection apparatus of the present invention. An example of the application is shown as follows.

  That is, the tower-like structure erection device 1 of the present invention includes two horizontal gantry units 2a and 2b each having a turning function and a main tower block suspension function on the lower surface side, one longitudinal end, and the like. Ends of the main jib 3 that are detachably and detachably attached to the one gantry unit 2a and the other gantry unit 2b, respectively, and upper ends in the vicinity of both longitudinal ends of the main jib 3, respectively, Auxiliary jibs 4a and 4b attached to the main jib 3 so as to be pivotable in the vertical direction, and auxiliary jib angle adjusting cylinders for individually adjusting the angular posture of the auxiliary jibs 4a and 4b with respect to the main jib 3 5a, 5b.

  Further, the winch units 6a and 6b individually provided on the respective gantry units 2a and 2b and the winch unit 6a on one gantry unit 2a are unwound and provided near one end portion of the main jib 3. 1 jib tip sheave block 7a provided at the tip of the auxiliary jib 4a and a sheave block (not shown) on the one gantry unit 2a, and further passed through the one jib tip sheave block 7a. Unwinding from the first wire rope 8a bound to the required portion of the other end in the longitudinal direction of the main jib 3 and the winch unit 6b on the other gantry unit 2b, near the other end of the main jib 3 The other jib tip sheave block 7b provided at the tip of the other auxiliary jib 4b provided, and a sheave block on a stand (not shown) on the other stand unit 2b. Wound around the click, further, through the other of the jib tip sheave block 7b, a configuration formed by a second wire rope 8b which is bound to the predetermined position of one longitudinal end portion of the main jib 3.

  More specifically, each of the gantry units 2a and 2b has an upper and lower two-layer structure and includes a swivel ring that can be driven by a driving device (not shown) between the lower layer portion 9 and the upper layer portion 10 to the lower layer portion 9. The upper layer portion can be relatively swiveled.

  Further, the lower surface portion 9 of each of the gantry units 2a and 2b can be detachably attached to the main tower block 11 so that the lower surface portion 9 functions as a hanger, which will be described later. Thus, when either one of the gantry units 2a or 2b is suspended and hung, the main tower block 11 can be suspended by either the gantry unit 2a or 2b. In addition, the attachment part to the main tower block 11 provided below the lower layer portion 9 of the gantry unit 2a or 2b is the main jib 3 arranged so as to project outward from the gantry unit 2a or 2b. The weight, the weight of the auxiliary jib 4a or 4b and the gantry unit 2a or 2b itself provided on the projecting end side of the main jib 3, and the weight of another main tower block 11 that is attached to the lower side and suspended. It is assumed that it has attachment strength capable of supporting the above.

  Each of the gantry units 2a and 2b is provided with a main jib bracket 12 provided with a pin hole (not shown) in the horizontal direction at one place on the outer peripheral edge of the upper layer portion 10, and the longitudinal direction of the main jib 3 is provided. With the pin holes (not shown) provided at both ends in the horizontal direction aligned with the pin holes of the bracket 12, the connecting pins 13 are inserted into the pin holes of the main jib 3 and the bracket 12 so as to be removable. By doing so, both longitudinal ends of the main jib 3 can be detachably connected to the brackets 12 on the gantry units 2a and 2b. Thus, in the state where the connection pin 13 that connects the bracket 12 on the other gantry unit 2b and the other end in the longitudinal direction of the main jib 3 is pulled out and the connection is released, the winch unit 6a on the gantry unit 2a is released. Thus, the first wire rope 8a that is bound to the required portion of the other end in the longitudinal direction of the main jib 3 through the jib tip sheave block 7a of one auxiliary jib 4a is wound and unwound. Accordingly, the main jib 3 is undulated with respect to the one gantry unit 2a around a connecting pin 13 that connects the bracket 12 on the one gantry unit 2a and one longitudinal end portion of the main jib 3. It can be operated. Further, in a state where the connection pin 13 that connects the bracket 12 on the one gantry unit 2a and one end portion in the longitudinal direction of the main jib 3 is removed and the connection is released, the winch unit 6b on the other gantry unit 2b With the winding and unwinding of the second wire rope 8b that is bound to a required portion of one end in the longitudinal direction of the main jib 3 through the jib tip sheave block 7b of the other auxiliary jib 4b, The main jib 3 is raised and lowered with respect to the other gantry unit 2b around a connecting pin 13 that connects the bracket 12 on the other gantry unit 2b and the other longitudinal end of the main jib 3 to each other. It is made to be able to.

  The main jib 3 includes an expansion / contraction mechanism 3a at an intermediate portion in the longitudinal direction that does not interfere with the attachment portions of the auxiliary jib angle adjusting cylinders 5a and 5b, and can extend and contract the entire length in the longitudinal direction within a required range. This is a configuration that can be used. The expansion / contraction mechanism 3a of the main jib 3 is adjusted to the required length when the main jib 3 is used as a crane jib by remotely expanding and contracting the main jib 3 to adjust the overall length in the longitudinal direction. In this state, the telescopic operation can be locked. As a result, in the state where the entire length of the main jib 3 is contracted, the arrangement interval between the gantry units 2a and 2b in the state where the brackets 12 are respectively connected to both longitudinal ends of the main jib 3 arranged in a horizontal state is defined as a suspension bridge. In the pair of main towers 14a and 14b, the dimension corresponding to the position where the horizontal arrangement interval between the main towers 14a and 14b is the smallest can be obtained. When the main jib 3 is used as a crane jib, the arrangement interval between the gantry units 2a and 2b arranged at both longitudinal ends of the main jib 3 is at least one in each main tower 14a and 14b. The total length of the main jib 3 can be extended so as to have a dimension corresponding to the arrangement interval between the tops of the main towers 14a and 14b when the height of the main tower block 11 is different. It is like that.

  As shown in FIG. 2, each of the auxiliary jibs 4a and 4b is shown in FIG. 2 (only one end side in the longitudinal direction of the main jib 3 is also shown in FIG. 3). It is rotatably connected to brackets 15 provided in the vicinity of both ends in the longitudinal direction via pins 16, and further, the longitudinal intermediate portions of the auxiliary jibs 4 a and 4 b and the auxiliary members in the main jib 3. The auxiliary jib angle adjusting cylinders 5a and 5b are respectively interposed between the jibs 4a and 4b and the required positions closer to the middle in the longitudinal direction of the required dimensions. Thereby, the angle posture of each auxiliary jib 4a, 4b with respect to the main jib 3 can be expanded / contracted by the expansion / contraction operation of each auxiliary jib angle adjusting cylinder 5a, 5b. Therefore, in a state in which the connection between the bracket 12 on the other gantry unit 2b and the other end portion in the longitudinal direction of the main jib 3 is released, the one auxiliary jib angle adjusting cylinder 5a is used to connect the one auxiliary jib 4a. , Causing the main jib 3 to function as a guy support for the first wire rope 8a for raising and lowering the main jib 3, and unwinding the first wire rope 8a from the winch unit 6a on one gantry unit 2a in a substantially vertical direction. And an angular posture in which the other auxiliary jib angle adjusting cylinder 5b projects the other auxiliary jib 4b outward from the other end of the main jib 3. As a result, the effective length of the jib when using the main jib 3 as a crane jib (distance to the turning point of the second wire rope 8b) is longer. It is to be able to function as a front end jib to allow setting. In the state where the connection between the bracket 12 on the one gantry unit 2a and one longitudinal end of the main jib 3 is released, the other auxiliary jib 4b is moved by the other auxiliary jib angle adjusting cylinder 5b. By functioning as a guy support for the second wire rope 8b for raising and lowering the main jib 3, the second wire rope 8b can be unwound in a substantially vertical direction from the winch unit 6b on the other gantry unit 2b. In addition to being arranged in an angular posture so that it can be made, the one auxiliary jib angle adjusting cylinder 5a causes the one auxiliary jib 4a to have an angular posture protruding outward from one end of the main jib 3. Thus, when the main jib 3 is used as a crane jib, the effective length of the jib (distance to the turning point of the first wire rope 8a) is set longer. Be made to function as the tip jib to be so it is to allow.

  Each of the winch units 6a and 6b has a load acting on the gantry units 2a and 2b when the connection between the corresponding gantry units 2a and 2b and the corresponding end of the main jib 3 is released. And the suspension capacity of the load of the sum of the weights of the main tower blocks 11 suspended below the gantry units 2a and 2b.

  Further, the gantry units 2a and 2b provided with the winch units 6a and 6b are respectively connected to the winch units 6a and 6b when the connection between the bracket 12 and the corresponding end of the main jib 3 is released. , 6b is provided with a weight balance that is suspended in a substantially horizontal posture via wire ropes 8a, 8b unwound from the wire 6b. Thus, in a state where the connection between the other gantry unit 2b and the other end of the main jib 3 is released, the wire rope 8b is unwound and wound by the winch unit 6b on the other gantry unit 2b. The other gantry unit 2b can be lowered and raised. In the state where the connection between the one gantry unit 2a and one end of the main jib 3 is released, the wire rope 8a is unwound and wound by the winch unit 6a on the gantry unit 2a. One gantry unit 2a can be lowered and raised.

  The power supply for driving the winch units 6a and 6b that are lowered and raised together with the gantry units 2a and 2b is supplied by a power generator (not shown) provided on the gantry units 2a and 2b. You can do it. Or you may make it carry out from the outside using the power cord which can follow the displacement of the up-down direction of each gantry unit 2a, 2b.

  Although not shown, the winch units 6a and 6b and the driver's seat for operating the telescopic mechanism 3a of the main jib 3 may be provided on the gantry units 2a and 2b, respectively. Alternatively, an operation chamber may be provided at a location different from the above-described gantry units 2a and 2b. The winch units 6a and 6b may be operated remotely by radio or the like.

  When the pair of main towers 14a and 14b of the suspension bridge is constructed using the tower-like structure erection apparatus 1 of the present invention having the above-described configuration, the construction is performed according to the following procedures shown in FIGS.

  That is, as shown in FIG. 4, the tower-like structure of the present invention is placed on the top of one main tower 14a with the main tower block 11 for constructing the main towers 14a and 14b on the ground in advance. One gantry unit 2 a in the object erection device 1 is installed, and one end portion of the main jib 3 in the longitudinal direction is connected to the bracket 12 of the one gantry unit 2 a via a connecting pin 13. Further, the connection between the other end in the longitudinal direction of the main jib 3 and the bracket 12 of the other gantry unit 2b is released. At this time, by adjusting the amount of unwinding of the first wire rope 8a by the winch unit 6a on the one gantry unit 2a, the undulation of the main jib 3 with respect to the one gantry unit 2a is adjusted, so The jib 3 is required from the horizontal direction so that the other end of the jib 3 is higher than the height of the main tower block 11 than the one end in the longitudinal direction attached to the bracket 12 of the one gantry unit 2a. Further, the auxiliary jibs 4a and 4b are set to the above-mentioned predetermined angular postures for functioning as the guy support and the leading end jib of the main jib 3, respectively. As a result, the main jib 3 and the auxiliary jib provided at the other longitudinal end of the main jib 3 together with the upper layer portion 10 of the one gantry unit 2a by the turning function of the one gantry unit 2a. The other frame unit 2b suspended from the 4b jib tip sheave block 7b via the second wire rope 8b can be turned in the horizontal direction. Further, by unwinding and winding the second wire rope 8b from the winch unit 6b on the other gantry unit 2b, the other gantry unit 2b can be lowered and raised.

  Therefore, in this state, after the new main tower block 11 is attached to the lower side of the other gantry unit 2b lowered to the vicinity of the ground, the second wire rope by the winch unit 6b on the other gantry unit 2b. The new main tower block 11 is lifted together with the other gantry unit 2b by winding up 8b, and the main jib 3 is swung by the swiveling function of the one gantry unit 2a, as shown in FIG. As described above, the new main tower block 11 attached to the other gantry unit 2 b is placed on the top of the other main tower 14 b formed by the existing main tower block 11.

  Next, a new main tower block 11 placed on the upper side of the existing main tower block 11 of the other main tower 14b is connected to the upper end portion. Thereby, the other main tower 14b is extended upward by one main tower block 11 minutes.

  After the extension of the other main tower 14b is performed as described above, the adjustment of the undulation of the main jib 3 by the winch unit 6a on the one gantry unit 2a and the extension mechanism 3a of the main jib 3 By adjusting the overall length of the main jib 3, as shown in FIG. 6, the other end in the longitudinal direction of the main jib 3 is placed on the upper side of the main tower block 11 connected to the top of the other main tower 14b. The bracket 12 of the other mounted gantry unit 2 b is fitted and connected to the bracket 12 via a connecting pin 13.

  Thereafter, the connecting pin 13 that connects the bracket 12 of the gantry unit 2a attached to the top of the one main tower 14a and one longitudinal end of the main jib 3 is removed, and the main jib 3 As shown in FIG. 7, after the connection between the one end in the longitudinal direction and the one gantry unit 2a is released, the second wire rope 8b by the winch unit 6b on the other gantry unit 2b is wound up to the required dimension. The undulation is adjusted so that the main jib 3 is inclined upward at a required angle with respect to the other gantry unit 2b, and the auxiliary jibs 4a and 4b are respectively connected to the tip jib and guide of the main jib 3. The predetermined angle posture described above for functioning as a support is set.

  Further, the one gantry unit 2a is removed from the top of the one main tower 14a. Thereby, the main jib 3 and the auxiliary jib 4a provided at one end in the longitudinal direction of the main jib 3 together with the upper layer part 10 of the other trellis unit 2b by the turning function of the other gantry unit 2b. The one gantry unit 2a suspended from the jib tip sheave block 7a via the first wire rope 8a can be turned in the horizontal direction. In addition, the first frame unit 2b can be lowered and raised by unwinding and winding the first wire rope 8a from the winch unit 6a on the one frame unit 2a.

  Therefore, in this state, the one gantry unit 2a is lowered to near the ground, and a new main tower block 11 is attached to the lower side of the one gantry unit 2a, and then the winch on the one gantry unit 2a is attached. The new main tower block 11 is lifted together with the one gantry unit 2a by winding the first wire rope 8a by the unit 6a, and the main jib 3 is moved by the turning function of the other gantry unit 2b. As shown in FIG. 8, the new main tower block 11 attached to the one gantry unit 2 a is placed on the top of the one main tower 14 a formed by the existing main tower block 11. Then, the new main tower block 11 is connected to the upper side of the existing main tower block 11 of the one main tower 14a. Thus, the other main tower 14a is extended upward by one main tower block 11 minutes.

  After the extension of one main tower 14a as described above, adjustment of the undulation of the main jib 3 by the winch unit 6b on the other gantry unit 2b and the extension mechanism 3a of the main jib 3 By adjusting the overall length of the main jib 3, as shown in FIG. 9, one end in the longitudinal direction of the main jib 3 is attached to the upper side of the main tower block 11 connected to the top of the one main tower 14a. It is fitted to the bracket 12 of one of the gantry units 2 a and connected to the bracket 12 via a connecting pin 13.

  Thereafter, the connecting pin 13 connecting the bracket 12 of the other gantry unit 2b attached to the top of the other main tower 14b and the other longitudinal end of the main jib 3 is removed, and the main jib is removed. 3 is released from the other gantry unit 2b and the other gantry unit 2b is removed from the top of the other main tower 14b, and then the one gantry unit 2a By winding up the first wire rope 8a by the winch unit 6a with the required dimensions, as shown in FIG. 10, the main jib 3 is undulated so that the main jib 3 is inclined upward with respect to the one gantry unit 2a. In addition, the auxiliary jibs 4a and 4b are arranged in the above-mentioned predetermined angular postures so as to function as the guy support and the leading end jib of the main jib 3, respectively. On the main towers 14a and 14b in which the main tower blocks 11 are stacked one by one and extended upward, the tower-like structure erection device 1 of the present invention is in a state similar to the state shown in FIG. Is done.

  Therefore, after that, by repeating the procedure of FIG. 4 to FIG. 10 sequentially, the main tower blocks 11 are connected to be stacked one by one in each main tower 14a, 14b of the suspension bridge. Construction of each main tower 14a, 14b comes to be performed.

  Thus, according to the tower-like structure erection apparatus 1 of the present invention, when the pair of main towers 14a and 14b of the suspension bridge is constructed, the gantry units 2a and 2b which are on the side supporting the undulation of the main jib 3 are constructed. The mounting side of the main tower 14a, 14b is alternately replaced so that one of the gantry units 2a or 2b which does not serve as a side supporting the undulation of the main jib 3 functions as a lifting tool for lifting the main tower block 11. Thus, the main tower block 11 can be alternately lifted and connected to the tops of the main towers 14a and 14b.

  Accordingly, when the tower-like structure erection device 1 of the present invention is used, the main towers 14a and 14b of the suspension bridge formed by stacking the main tower blocks 11 are provided with guide rails in the vertical direction and the guide rails. It is not necessary to provide a device for raising the crane along the main line 14 and there is no need to install an independent post in addition to the main towers 14a and 14b. Therefore, in the tower-like structure erection apparatus 1 according to the present invention, there is no risk that the cost will increase significantly even when the height of the main towers 14a and 14b to be constructed is high. The effect of reducing the construction cost of 14a, 14b can be expected.

  In addition, this invention is not limited only to the said embodiment, The full length of the said main jib 3, the dimension range which can be expanded-contracted, and the length dimension of auxiliary jib 4a, 4b are the main towers of the suspension bridge to be constructed. You may change suitably according to the space | interval of 14a, 14b, and the up-down direction dimension of the one main tower block 11 used by connecting sequentially so that each main tower 14a, 14b may be piled up.

  The extension mechanism 3a of the main jib 3 may adopt any type of extension mechanism 3a as long as the rigidity capable of withstanding the load acting on the main jib 3 can be obtained.

  The gantry units 2a and 2b can be connected to the bracket 12 provided on the upper layer portion 10 so that the corresponding end portion of the main jib 3 can be removed via the connecting pin 13, and as a divided unit on the lower surface side of the lower layer portion 9 As long as the main tower block 11 can be suspended, the planar shapes of the lower layer portion 9 and the upper layer portion 10 of the gantry units 2a and 2b may be different from each other.

  The tower-like structure erection device 1 of the present invention is a construction of a plurality of towers, in the case of constructing a plurality of tower-like structures of a type that is constructed by sequentially stacking divided blocks, The present invention can also be applied to the construction of divided blocks of any tower-like structure other than the main towers 14a and 14b of the suspension bridge, such as construction of a plurality of chimneys.

  Of course, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Tower-like structure installation apparatus 2a, 2b Base unit 3 Main jib 3a Telescopic mechanism 4a, 4b Auxiliary jib 6a, 6b Winch unit 7a, 7b Jib tip sheave block 8a, 8b Wire rope 11 Main tower block (tower structure Split block)
12 Bracket 13 Connecting pin 14a, 14b Main tower (tower-like structure)

Claims (4)

  Two pedestal units each having a swiveling function and a function of attaching and suspending a divided block of the tower-like structure for constructing the tower-like structure to each other are provided corresponding to the adjacent tower-like structures, Mainly attached to the top of the divided block of the corresponding tower-like structure so as to be detachable, and both end portions in the longitudinal direction are detachably attached to the brackets provided in each of the above-mentioned gantry units via connecting pins. The other gantry unit provided with a jib and further released from the other end in the longitudinal direction of the main jib in a state in which the longitudinal end of the main jib is connected to the bracket of the one gantry unit in a undulating manner. A winch unit for lifting and lowering the main jib from the other longitudinal end of the main jib via a wire rope, and a bracket of the other gantry unit. The other gantry unit is lifted from another end of the main jib in the longitudinal direction via another wire rope while the other end of the main jib is connected in a undulating manner. A tower-like structure erection device having a structure including another winch unit for lowering.   A winch unit is provided on the other gantry unit for lifting the other gantry unit that has been disconnected from the other end in the longitudinal direction of the main jib from the other end in the longitudinal direction of the main jib via a wire rope. And another winch unit for lifting and lowering one gantry unit, which has been disconnected from the longitudinal end of the main jib, from the longitudinal end of the main jib via another wire rope. The tower-like structure erection device according to claim 1, which is provided on the unit.   Auxiliary jibs whose rotational orientation can be changed in the vertical direction with respect to the main jib are respectively provided on the upper side in the vicinity of both longitudinal ends of the main jib, and wire ropes that are unwound from a winch unit provided on the other gantry unit are provided. The auxiliary jib tip provided near the other end in the longitudinal direction of the main jib is hung on a sheave block at the end of the auxiliary jib, and then attached to a required portion at one end in the longitudinal direction of the main jib. Another wire rope that is unwound from another winch unit provided above is hung on the jib tip sheave block of the auxiliary jib tip provided near the longitudinal end of the main jib and then the longitudinal direction of the main jib. The tower-like structure erection device according to claim 2, wherein the tower-like structure erection device is attached to a required portion of the other end.   The tower-like structure erection device according to claim 1, 2, or 3, wherein an extension mechanism for extending and reducing the entire length of the main jib is provided at a longitudinal intermediate portion of the main jib.

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