JP6936610B2 - Lifting mechanism and lifting method for temporary living organisms - Google Patents

Description

The present invention relates to an elevating mechanism and an elevating method of a temporary nutrient body.

In the demolition work of high-rise buildings, a temporary demolition body is used to cover the outer circumference and upper part of the demolition target floor with a demolition sheet, etc. to prevent the demolition material from flying and falling, and to suppress dust and noise during demolition. There are many cases. As a technique for covering the outer periphery and the upper part of the floor to be demolished in this way, a building demolition system has been conventionally disclosed (see, for example, Patent Document 1).

In this building demolition system, a demolition space surrounded by outer peripheral curing provided on the surface of a roof portion supported by a plurality of support masts is formed, and demolition work is performed in this demolition space. Further, in the building demolition system, when the demolition work of the demolition target floor is completed, the lower floor is set as the demolition target floor, and the support mast is lowered in accordance with the demolition target floor. For this reason, the building demolition system is equipped with a support mast lowering device.

Japanese Unexamined Patent Publication No. 2014-227651

On the other hand, a construction method using a low-flying climbing crane, in which a horizontal jib crane or the like is installed inside the building to dismantle a high-rise building, is also considered. Even in such a construction method, the dismantling space surrounded by the outer peripheral curing provided on the surface of the roof part supported by the support mast is formed and the dismantling work is performed, and the support mast is used for the dismantling work of the lower floor. It is desirable to lower it. In this case, since a horizontal jib crane or the like is provided inside the building, it is desirable to provide the mast on the outside of the building.

Here, even when the mast is provided on the outside of the building, it is conceivable to use the lowering device in the building demolition system disclosed in Patent Document 1 when lowering the support mast. However, in the building demolition system disclosed in Patent Document 1, the support mast is provided inside the building. Therefore, the lowering device in the building demolition system disclosed in Patent Document 1 cannot be used in the construction method using a low-flying climbing crane, and when the support mast is provided on the outside of the building, it is supported. There was a problem that it was difficult to lower the mast.

Therefore, an object of the present invention is to provide an elevating mechanism and an elevating method for a temporary curing body capable of easily elevating and lowering a mast provided on the outside of a building and supporting a curing sheet or the like.

The temporary curing body elevating mechanism according to the present invention that solves the above problems can be attached with a curing sheet that covers at least a part of the building, and has a mast that is arranged around the building and extends in the vertical direction, and the mast. The mast is raised and lowered relative to the building while the support member is supported by the building and is movable up and down relative to the mast, and the support member is supported by the building. A mast drive device for raising and lowering the mast, a support member driving device for raising and lowering the support member relative to the mast while the mast is supported by the building, and the support member for raising and lowering the mast relative to the mast. The support member is provided with a retracting structure for retracting the support member so that the movement locus of the mast deviates from the installation position of the building. The mast and the guide hardware have a load receiving bracket connected via a retracting structure and a bracket receiving piece that can come into contact with the load receiving bracket and is supported on the floor surface of the building. It is characterized in that it can be held in a state where it cannot move up and down due to its mast structure.

In the mechanism for raising and lowering the temporary curing body according to the present invention, a mast drive device that raises and lowers the mast to which the curing sheet can be attached relative to the building and a support member that raises and lowers the mast relative to the mast. It is equipped with a support member drive device. Therefore, the curing sheet attached to the mast can be lowered as the building is demolished. Here, the mast is also lowered when the curing sheet is lowered, but there is a concern that the support member for supporting the mast may be caught in the building and hinder the lowering of the mast and the support member. In this regard, the mechanism for raising and lowering the temporary living body according to the present invention is provided with a retracting structure for retracting the support member so that the movement locus of the support member that moves up and down relative to the mast deviates from the installation position of the building. .. Therefore, when the mast and the support member are lowered, the support member can be retracted so that the support member does not get caught in the building. Therefore, the mast provided on the outside of the building and supporting the curing sheet or the like can be easily raised and lowered.

Further, in the elevating mechanism of the temporary feeding body according to the present invention, the retracting structure may be a rotating structure that allows the support member to rotate around an axis along the mast.

As described above, since the retractable structure is a rotating structure that allows the support member to rotate around the axis along the mast, the support member can be easily retracted.

Further, in the elevating mechanism of the temporary feeding body according to the present invention, the support member includes a first support member arranged above and a second support member arranged below, and the support member driving device is a support member. A first support member driving device for raising and lowering the first support member and a second support member driving device for raising and lowering the second support member may be provided.

As described above, the support members include the first support member arranged above and the second support member arranged below, and are raised and lowered by the first support member drive device and the second support member drive device, respectively. NS. Therefore, since the first support member and the second support member can be raised and lowered independently, the efficiency and safety level when raising and lowering the support member and the mast can be improved.

Further, in the temporary feeding body elevating mechanism according to the present invention, the second support member driving device may be a hydraulic jack provided on the mast.

As described above, since the second support member driving device is a hydraulic jack provided on the mast, the mast can be easily moved up and down.

Further, in the temporary feeding body elevating mechanism according to the present invention, the first support member driving device may be a chain block provided on the mast.

As described above, since the first support member driving device is a chain block provided on the mast, the equipment can be simplified.

Further, in the elevating mechanism of the temporary feeding body according to the present invention, the mast driving device may be a driving device common to the first supporting member driving device or the second supporting member driving device.

As described above, since the mast drive device is a drive device common to the first support member drive device or the second support member drive device, it is possible to contribute to the reduction of the number of member points.

Further, the method of raising and lowering the temporary mast according to the present invention, which solves the above-mentioned problems, is a method of raising and lowering the temporary mast by using the above-mentioned elevating mechanism of the temporary mast, and supports the supporting hardware to the building. in state, the mast was down relatively with respect to the building, in a state in which the mast is supported on the building, of the supporting member at the time of up and down relatively with respect to the front Symbol mast the support member after the moving track is retracted through the evacuation structure to disengage the building or al, the support member is relatively elevator to the mast, after the supporting member has moved to a predetermined position, the mast If, in that the guide hardware attached to the mast of the support member holds the vertical movement disabled state by the yoke structure, supporting the mast by supporting the support member to the building to the building It is characterized by.

According to the raising / lowering mechanism and the raising / lowering method of the temporary curing body according to the present invention, the mast provided on the outside of the building and supporting the curing sheet or the like can be easily raised / lowered.

It is a side view of the building being demolished. It is a plan view of the building being demolished. It is a top view of the elevating mechanism. It is a side view of the elevating mechanism. It is a process drawing which shows the descending procedure of a temporary nutrient body. It is a process drawing which shows the procedure which follows FIG.

Hereinafter, the elevating mechanism of the temporary nourishing body according to the embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a side view of the building being demolished, and FIG. 2 is a plan view of the building being demolished. As shown in FIGS. 1 and 2, the temporary nourishing body elevating mechanism 1 according to the present embodiment is provided in, for example, a super high-rise building (hereinafter, simply referred to as “building”) 50 having a length of more than 100 m. The elevating mechanism 1 of the temporary nourishing body includes the temporary nourishing body 10 and a plurality of elevating units 20. Each floor of the building 50 is demolished in order from the upper floor. The temporary nourishing body 10 is provided on the dismantled floor and the surrounding floors in the building 50.

The building 50 is an example of a steel structure (S structure) having a rectangular shape in a plan view, and is constructed by a main beam 52 , a main pillar 51 , a floor slab 53, and an outer wall 54. Further, as shown in FIG. 2, the floor slab 53 is provided with an opening 15 for unloading. The unloading opening 15 is continuously formed in the floor slab 53 of each floor from the top floor TF to the ground floor (not shown) in the vertical direction. Further, on the top floor TF of the building 50, for example, a horizontal jib crane (not shown) used for demolition work of the building 50 is provided.

As shown in FIG. 1, the temporary nourishing body 10 is provided above the building 50. The temporary nourishing body 10 includes a plurality of masts 11 extending in the vertical direction. The plurality of masts 11 are arranged around the building 50 as shown in FIG. As shown in FIG. 1, a roof frame 12 is provided at the upper end of the mast 11. The roof frame 12 is formed of a multi-truss and has a chevron shape when viewed from the side. A tie rod 13 is bridged between the lower ends of the roof frame 12.

An outer peripheral frame 14 is provided on the outside of the mast 11. The outer peripheral frame 14 extends along the vertical direction together with the mast 11. A curing sheet 16 is attached to the outside of the outer peripheral frame 14. The curing sheet 16 covers a part of the building 50, here, a floor including a floor where the demolition work is performed. The curing sheet 16 is composed of, for example, a mesh sheet, and suppresses dust and noise generated by the demolition work of the building. A folded-back 17 is provided at the lower end of the curing sheet 16.

The elevating unit 20 is provided for each mast 11. As shown in FIGS. 3 and 4, the elevating unit 20 includes an upper load receiving bracket 31 which is a support member (first support member) and a lower load receiving bracket 41 which is a support member (second support member). There is. The upper load receiving bracket 31 and the lower load receiving bracket 41 are attached to the upper guide metal fitting 32 and the lower guide metal fitting 42, respectively. Both the upper load receiving bracket 31 and the lower load receiving bracket 41 have a substantially right-angled triangular shape with openings 31H and 41H formed in the center. The upper guide hardware 32 and the lower guide hardware 42 are attached so as to be vertically movable (up and down) with respect to the mast 11. Therefore, the upper load receiving bracket 31 and the lower load receiving bracket 41 can also move up and down relative to the mast 11.

Further, the elevating unit 20 includes an upper bracket receiver 33 and a lower bracket receiver 43. The upper bracket receiving piece 33 and the lower bracket receiving piece 43 are attached to the end of the main beam 52 in the building 50, and are arranged at positions where they can come into contact with the upper load receiving bracket 31 and the lower load receiving bracket 41. There is.

Further, as shown in FIGS. 3 and 5 ( a ), the elevating unit 20 includes a hydraulic jack device 34 which is a support member drive device (first support member drive device) and a support member drive device (second support member drive device). ) Is provided with the chain block 35. The hydraulic jack device 34 includes a hydraulic jack 34A, an upper chuck 34B provided at the upper end portion of the mast 11, and a lower chuck 34C provided at the lower end portion of the mast 11. The upper jack in the hydraulic jack device 34 is connected to the upper chuck 34B via the upper wire 34D, and the lower jack in the hydraulic jack device 34 is connected to the lower chuck 34C via the upper wire 34E. The mast 11 or the lower load receiving bracket 41 can be moved up and down by operating the hydraulic jack device 34. The hydraulic jack device 34 is a common drive device for the mast 11 or the lower load receiving bracket 41.

The chain block 35 is a manual type and includes a hoisting device 35A provided at the upper end of the mast 11. The chain block 35 includes a hanging wire 35B suspended from the hoisting device 35A, and a hook member 35C is attached to the lower end of the hanging wire 35B. The hook member 35C is adapted to be hooked in a hook hook hole (not shown) provided in the upper guide hardware 32.

Further, as shown in FIG. 3, an upper rotation structure 36, which is a retractable structure, is provided between the upper guide hardware 32 and the upper load receiving bracket 31, and is provided between the lower guide hardware 42 and the lower load receiving bracket 41. Is provided with a lower rotation structure 46 which is a retractable structure. The upper rotation structure 36 includes an upper rotation shaft 36A arranged in parallel with the mast 11. The upper rotation structure 36 is provided on the upper guide metal fitting 32, and is provided on the mast side rotation shaft mounting portion 36B and the upper load receiving bracket 31 in which a through hole through which the upper rotation shaft 36A penetrates is formed, and is provided on the upper rotation shaft 36. It is provided with a bracket-side rotating shaft mounting portion 36C having a through hole through which the moving shaft 36A penetrates. Similar to the upper rotation structure 36, the lower rotation structure 46 includes a lower rotation shaft 46A, a mast side rotation shaft mounting portion 46B, and a bracket side rotation shaft mounting portion 46C.

Further, a stopper 31A protruding downward is provided on the lower surface of the tip portion of the upper load receiving bracket 31, and the stopper 31A can be fitted to the tip of the upper bracket receiving bracket 33 on the mast 11 side. A mast 33A is formed. Further, the lower load receiving bracket 41 and the lower bracket receiving piece 43 are also provided with a stopper 41A and a fitting hole 43A similar to the stopper 31A and the fitting hole 33A provided in the upper load receiving bracket 31 and the upper bracket receiving piece 33. Has been done. By fitting the stoppers 31A and 41A into the fitting holes 33A and 43A, the upper load receiving bracket 31 and the lower load receiving bracket 41 are suppressed from being rotated by the upper rotating structure 36 and the lower rotating structure 46.

Further, the upper guide hardware 32 is formed with a hollow structure (not shown). The kanuki structure includes a kanuki and a hole into which the kanuki is fitted, and when the kanuki is fitted into the hole, the upper guide hardware cannot move up and down. Similarly, the lower guide hardware 42 also has a hollow structure.

Next, a method of lowering the temporary living body (elevating method) using the raising / lowering mechanism of the temporary feeding body according to the present embodiment will be described. FIG. 5 is a process diagram showing a procedure for lowering the temporary nutrient body. First, as shown in FIG. 5 ( a ), the mast 11 of the temporary living body 10 (see FIG. 1) is provided on the (N + 2) floor (N + 2) FL, which is the dismantled floor in the building 50, and the floor below it. Has been done. At this time, the upper bracket receiving bracket 31 and the lower load receiving bracket 41 come into contact with the upper bracket receiving object 33 and the lower bracket receiving object 43 provided on the main beam 52 of the building 50, so that the upper bracket receiving object 33 and the lower bracket receive 33 and the lower. A support state of the mast 11 is formed by the building 50 via the bracket receiver 43.

Next, as shown in FIG. 5A, the dismantling work is performed with the temporary nourishing body 10 supported by the building 50. Here, the upper bracket receiver 33 is attached to the (N + 2) floor (N + 2) FL to support the upper load receiving bracket 31, and the lower bracket receiver 43 is attached to the (N) floor (N) FL to support the lower load receiving bracket. The (N + 3) floor (not shown in FIG. 5) is dismantled in support of 41.

After the dismantling of the (N + 3) floor is completed, the temporary nursing body 10 is lowered. Therefore, first, as shown in FIG. 5B, the hydraulic jack device 34 is operated with the upper bracket receiving bracket 33 and the lower bracket receiving portion 43 supporting the upper load receiving bracket 31 and the lower load receiving bracket 41. This lowers the mast 11. At this time, the hydraulic jack device 34 functions as a mast drive device. By lowering the mast 11, the upper end portion of the mast 11 approaches the upper load receiving bracket 31, and the lower end portion of the mast 11 moves away from the lower load receiving bracket 41. In this way, the mast 11 is lowered to a predetermined height position and then stopped.

After stopping the mast 11, the lower load receiving bracket 41 is slightly raised to pull out the stopper 41A from the fitting hole 43A so that the lower load receiving bracket 41 can rotate around the lower rotating shaft 46A. After that, as shown in FIG. 5C, the lower load receiving bracket 41 is rotated about 90 degrees clockwise in a plan view around the lower rotation shaft 46A, and the movement locus of the lower load receiving bracket 41 is changed. The lower load receiving bracket 41 is retracted to the retracted position so as to deviate from the installation position of the building 50, and the support state of the mast 11 by the building 50 (see FIG. 1) via the lower load receiving bracket 41 is released.

After retracting the lower load receiving bracket 41, the hydraulic jack device 34 is operated, and as shown in FIG. 6D, the lower load receiving bracket 41 is moved together with the lower guide hardware 42 on the (N-2) floor (N-2). ) Lower to FL. Then, the lower load receiving bracket 41 is rotated about 90 degrees counterclockwise in a plan view around the lower rotation shaft 46A to return from the retracted position to the original position. Then, the lower load receiving bracket 41 is slightly lowered, the stopper 41A is fitted into the fitting hole 43A, and the mast 11 is supported by the building 50 via the lower load receiving bracket 41.

In this way, after lowering the lower load receiving bracket 41, the upper load receiving bracket 31 is slightly raised, the stopper 31A is pulled out from the fitting hole 33A, and the upper load receiving bracket 31 is rotated around the upper rotating shaft 36A. Make it possible. After that, as shown in FIG. 6E, the upper load receiving bracket 31 is rotated about 90 degrees clockwise in a plan view around the upper rotation shaft 36A, and the movement locus of the upper load receiving bracket 31 is changed. The upper load receiving bracket 31 is retracted to the retracted position so as to deviate from the installation position of the building 50, and the support state of the mast 11 by the building 50 (see FIG. 1) via the upper load receiving bracket 31 is released.

After retracting the upper load receiving bracket 31, the hook member 35C of the chain block 35 is hooked on the hook hooking hole of the upper guide hardware 32. After that, the chain block 35 is operated to lower the upper load receiving bracket 31 together with the upper guide hardware 32 to the (N) floor (N) FL as shown in FIG. 6 (f). Then, the upper load receiving bracket 31 is rotated about 90 degrees counterclockwise in a plan view around the upper rotation shaft 36A to return from the retracted position to the original position. Then, the upper load receiving bracket 31 is slightly lowered, the stopper 31A is fitted into the fitting hole 33A, and the mast 11 is supported by the building 50 via the lower load receiving bracket 41. Since the mast 11 lowering work is completed when the upper load receiving bracket 31 is lowered, the upper load receiving bracket 31 is disassembled at the same time as the dismantling work of the (N + 2) floor (N + 2) FL using a horizontal jib crane or the like. The descent work can be performed. In this way, the work of lowering the temporary nourishing body 10 is completed.

As described above, in the method of constructing the temporary nourishing body according to the present embodiment, the floor around the floor on which the dismantling work is performed is covered with the temporary nourishing body 10 in the dismantling work. The temporary curing body 10 includes a mast 11 arranged on the outside of the building 50, and a curing sheet 16 is attached to the mast. Therefore, a large space for installing a horizontal jib crane or the like can be secured inside the building. Further, although the mast 11 is provided on the outside of the building 50, the mast 11 is provided with the elevating unit 20. The elevating unit 20 has an upper rotation structure 36 and a lower rotation structure 46 for rotating the upper load receiving bracket 31 and the lower load receiving bracket 41. Therefore, when lowering the temporary nutrient body 10, the upper load receiving bracket 31 and the lower load receiving bracket 41 are retracted so that the movement loci of the upper load receiving bracket 31 and the lower load receiving bracket 41 deviate from the installation position of the building 50. Can be evacuated to. Therefore, the mast 11 provided on the outside of the building 50 and supporting the curing sheet 16 and the like can be easily raised and lowered.

Further, the elevating unit 20 has a two-stage structure of an upper load receiving bracket 31 and a lower load receiving bracket 41, and the mast 11 is supported by the building 50. Therefore, when the temporary nutrient body 10 is lowered, either the upper load receiving bracket 31 or the lower load receiving bracket 41 can maintain the state in which the mast 11 is supported by the building 50. Therefore, it is possible to improve the efficiency and the degree of safety when the temporary feeding body 10 is lowered.

Further, the upper load receiving bracket 31 and the lower load receiving bracket 41 are retracted to the retracted position by being rotated by the upper rotating structure 36 and the lower rotating structure 46, respectively. Therefore, the upper load receiving bracket 31 and the lower load receiving bracket 41 can be easily retracted.

Further, the mast 11 and the lower load receiving bracket 41 are lowered by the hydraulic jack device 34. Therefore, the mast 11 and the lower load receiving bracket 41 can be easily lowered. Further, since the lowering operations of the mast 11 and the lower load receiving bracket 41 can be executed by a common drive device, it is possible to contribute to the reduction of the number of members by that amount. Further, the upper load receiving bracket 31 is lowered by the chain block 35. Therefore, the upper load receiving bracket 31 can be lowered by a simpler device, so that the equipment can be simplified.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be appropriately modified without departing from the spirit of the present invention. For example, in the above embodiment, the method of lowering the temporary feeding body 10 is described, but the temporary feeding body 10 may be raised to a floor higher than the current position.

Further, in the above embodiment, the elevating unit 20 has a two-stage bracket of an upper load receiving bracket 31 and a lower load receiving bracket 41, but it may have only one stage or three or more stages. .. The retracting structure of the upper load receiving bracket 31 and the lower load receiving bracket 41 is formed by the upper rotating structure 36 and the lower rotating structure 46, but other retracting structures may be used. For example, it may have a rotating structure that rotates around a horizontal axis, or it may have a retracting structure such as a sliding type instead of a rotating type.

Further, in the above embodiment, the mast 11 is provided around the building 50, but the mast 11 may be provided at a position other than the periphery of the building 50. Further, although the hydraulic jack device 34 and the chain block 35 are used as the drive device, other drive devices such as a motor and a cylinder actuator may be used.

1 Temporary curing organism elevating mechanism 10 Temporary curing organism 11 Mast 16 Curing sheet 20 Elevating unit 31 Upper load receiving bracket 32 Upper guide hardware 33 Upper bracket receiving metal 34 Hydraulic jack device 35 Chain block 36 Upper rotating structure 36A Upper rotating shaft 36B Mast side rotating shaft mounting part 36C Bracket side rotating shaft mounting part 41 Lower load receiving bracket 42 Lower guide hardware 43 Lower bracket receiving material 46 Lower rotating structure 46A Upper rotating shaft 46B Mast side rotating shaft mounting part 46C Bracket Side rotation shaft mounting part 50 Building

Claims (7)

A mast that can be attached with a curing sheet that covers at least a part of the building and is placed around the building and extends in the vertical direction.
A support member that allows the mast to be supported by the building and that can move up and down relative to the mast.
A mast drive device that raises and lowers the mast relative to the building while the support member is supported by the building.
A support member driving device that raises and lowers the support member relative to the mast while the mast is supported by the building.
An evacuation structure that retracts the support member so that the movement locus of the support member that moves up and down relative to the mast deviates from the installation position of the building.
Equipped with a,
The support member
Guide hardware attached to the mast so that it can move up and down,
A load receiving bracket connected to the guide hardware via the retracting structure,
It has a bracket receiver that can come into contact with the load receiving bracket and is supported on the floor surface of the building.
The mast and the guide hardware are a mechanism for raising and lowering a temporary living body, characterized in that the mast and the guide hardware are configured to be able to be held in a vertically immovable state by a hollow structure. The evacuation mechanism for a temporary living body according to claim 1, wherein the retracting structure is a rotating structure that allows the support member to rotate around an axis along the mast. The support member includes a first support member arranged above and a second support member arranged below.
The support member drive device includes a first support member drive device that raises and lowers the first support member, and a second support member drive device that raises and lowers the second support member.
The mechanism for raising and lowering a temporary living body according to claim 1 or 2. The elevating mechanism for a temporary living body according to claim 3, wherein the second support member driving device is a hydraulic jack provided on the mast. The elevating mechanism for a temporary living body according to claim 3 or 4, wherein the first support member driving device is a chain block provided on the mast. The elevation of the temporary nutrient body according to any one of claims 3 to 5, wherein the mast drive device is a drive device common to the first support member drive device or the second support member drive device. mechanism. A method for raising and lowering the temporary feeding body by using the raising and lowering mechanism of the temporary feeding body according to any one of claims 1 to 6.
With the supporting hardware supported by the building, the mast is moved up and down relative to the building.
Retracting the mast at a state of being supported on the building, through the evacuation structure as the movement locus of the supporting member is disengaged the buildings or found at the time of up and down relatively with respect to the front Symbol mast the support member After that, the support member is moved up and down relative to the mast.
After the support member has moved to a predetermined position,
The mast and the guide hardware attached to the mast among the support members are held in an immovable state by a punching structure, and the mast is supported by the building by supporting the support member to the building. A method of raising and lowering a temporary mast, which is characterized by doing so.

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