JP2609017B2 - External curing net lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external curing net lifting device that automatically lifts a curing net around a building under construction, particularly, a super high-rise building as the working level rises. is there.

[0002]

2. Description of the Related Art Conventionally, a method of curing mainly the outer periphery of a super-high-rise building during construction, as shown in FIG. 11, employs a support pillar 101 between an already built N1 slab and an N2 slab. The support column 10
1 is a veranda opening or the like 103 using a support material 102 or the like.
Net support frame 10 that projects diagonally upward from the outside of the building
4 and the curing net 10 is
5 had been installed. Therefore, when the curing net 105 is moved to a newly built veranda opening 103 or the like between the N3 slab and the N4 slab as the working level rises, the support column 10 is used.
It was necessary to once disassemble and remove all of 1, the support member 102, the net support frame 104, etc., transport them to the upper layer, and reassemble them.

In the conventional curing method as described above, a series of relocation operations such as disassembly of the external curing net, transportation to an upper level, and reassembly must be performed manually as the working level rises. Not only a great deal of labor and time is required, but also a danger to the operator, and an improvement has been desired.

The present invention was made in order to solve the above-mentioned conventional problems, and an object of the present invention is to automate the transfer work of the external curing net to the upper layer, An object of the present invention is to provide an external curing net lifting device that can save labor and ensure worker safety and reduce temporary costs.

[0005]

The features of the present invention made to achieve the above object are indicated by the reference numerals of the embodiments described later, and the height is at least approximately two layers. A supporting frame 1 having a height of about one layer, a curing net tensioning frame 2 supported by the supporting frame 1 so as to be able to move up and down, the supporting frame 1 and a curing net tensioning frame 2. Elevating drive means 8 for relatively elevating and lowering
A veranda handrail 3 is provided at two locations near the upper and lower ends of the curing net tensioning frame 2 and two upper and lower locations at the lower end of the support frame 1 at the same distance from the two locations.
Arms 18a, 18b and 17a, 17b having hooks at their ends that engage with 3a to 35a and the like from above are pivotally supported vertically swingably between a substantially horizontally extended posture and a downwardly inclined posture. A spring for urging each of these arms upward is also provided.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 denotes a support frame having a height of two layers, and 2 denotes a support frame. It is a curing net tension frame that has the height of one floor. The curing net stretching frame 2 is a horizontally-long rectangular shape that extends to the left and right sides of the supporting frame 1 as shown in FIG.
The center frame portion 3 and the both side frame portions 4 that are detachably connected to the left and right sides of the center frame portion 3 by bolts 4a are assembled, and a curing net 5 is stretched as shown in FIG. .

The vertical frame members located on both left and right sides of the support frame 1 are guide rails 6 for supporting the curing net tension frame 2 so as to be able to move up and down. A pair of right and left upper and lower two-stage roller units 7 that engage with the pair of right and left guide rails 6 are attached. Further, the support frame 1 is provided with an elevating drive means 8 for moving the support frame 1 and the curing net tension frame 2 relatively up and down.

As shown in FIGS. 2 to 5, the lifting drive means 8 includes a motor 9 with a brake installed at the lower end of the center of the support frame 1, and drive teeth mounted on the output shaft of the motor 9 with the brake. A wheel 10, a free-rotating tooth wheel 11 axially supported on the upper end portion of the support frame 1 so as to be located right above the drive tooth wheel 10, and a suspension on the drive tooth wheel 10 and the free-rotating tooth wheel 11. Both ends 12a and 12b are composed of a chain 12 locked at the center of the upper and lower ends of the curing net tension frame 2.

As shown in FIGS. 4 and 6, each roller unit 7 on the side of the curing net tensioning frame 2 includes four rollers 13 in a pair of right and left and upper and lower stages, and is disposed at a substantially central position between the rollers 13. The provided mounting bolts 14 are mounted on brackets 15 mounted on the side of the curing net stretching frame 2 via nuts 16 so as to be adjustable in the front-rear direction at right angles to the length direction of the guide rails 6. On the other hand, as shown in FIG. 4, the guide rail 6 is made of a section steel having a rectangular C-shaped cross section, and rail portions 6a, 6b on both left and right sides thereof.
Each of the rollers 13 of the roller unit 7 is rotatably fitted therein.

As shown in FIGS. 3 to 6, arms 17a, 17b and 18a, 18b are attached to the support frame 1 and the curing net extending frame 2 in a pair of left and right and upper and lower two stages, respectively. Upper arm 17 on the support frame 1 side
a and the lower arm 17b are attached to brackets 19, 20 attached to the side surfaces of the guide rails 6 on the left and right sides at substantially the center in the height direction and near the lower end of the support frame 1 via horizontal support shafts 21, 22, respectively. Supported up and down freely,
It projects to the side opposite to the side with the curing net tension frame 2. The upper arm 18 of the curing net tension frame 2 side
a and the lower arm 18b are vertically oscillated via horizontal support shafts 26 and 27 respectively on brackets 24 and 25 attached to the front surfaces near the upper and lower ends of a vertical frame member 23 located adjacent to the guide rail 6. It is freely supported and protrudes in the same direction as the arms 17a and 17b on the support frame 1 side.

Arms 17a, 1 on the side of the support frame 1
7b is the same as the vertical space between the arms 18a, 18b on the side of the curing net tensioning frame 2, and the ends of these arms 17a, 17b and 18a, 18b have side surfaces as shown in FIG. Hook portions 28 and 29 are formed on the same vertical line as viewed from above and are recessed upward from the lower side. Further, as shown in FIG. 7, each arm arm 17a, 17b and 18a, 18b is biased upward by a torsion coil spring 30 or a tension coil spring 31, and is supported by brackets 19, 20 and 24, 25 respectively. Abuts the stopper 32 provided at the
It is held in a horizontal overhang position.

The method of using the external curing net lifting device constructed as described above will be described. As shown in FIG. 1, the hooks 28 at the distal ends of the upper and lower arms 17a and 17b on the support frame 1 side are already constructed. Building N2 balcony 34
Of the N1 veranda 33 and the handrail 33a of the N1 veranda 33, the support frame 1 is vertically supported from the N1 veranda operation level to the N3 veranda operation level. Then, the chain 9 is rotated clockwise in FIG. 5 by the motor 9 of the elevating and lowering drive means 8 to raise the curing net tension frame 2 with respect to the support frame 1, and the lower arm 18b thereof holds the N2 veranda 34 by the handrail. 34
Stop at the position above a. At this time,
The drive tooth wheel 10 is brake-locked by stopping the motor 9 with a brake, and the position of the curing net tension frame 2 with respect to the support frame 1 is maintained. When the curing net tension frame 2 moves upward, the arm 1 in the horizontal extension posture is set.
Even when the arms 8a and 18b collide upward with a formwork or the like for building the N2 veranda 34 or the N3 veranda 35, the arms 18a and 18b can be used as the arm 1 shown in FIG.
Similarly to 7a and 17b, it is supported so as to be vertically swingable around the horizontal support shafts 26 and 27 and can be swung downwards against the biasing force of the spring 30 or 31, so that the curing net tension frame 2 There is no danger of hindering the rise of the city.

By the above operation, the curing net extending frame 2 stands upright on the outside of the building at the N3 veranda work level, so that the curing net 5 extending on the frame 2 (see FIG. 2) becomes N3. Veranda 35 and handrail 35a
It can function as a curing net during the construction work.

When the N3 veranda 35 and the handrail 35a are built, the chain 9 is rotated counterclockwise in FIG. On the other hand, the hooks 29 are slightly lowered, and the hooks 29 of the upper and lower arms 18a and 18b are hooked on the handrails 34a of the N2 veranda 34 and the handrails 35a of the newly built N3 veranda 35. It is supported by verandas 34 and 35 of N2 and N3.

Subsequently, the motor 9 of the lifting drive means 8
When the chain 12 is rotated counterclockwise in FIG.
As described above, the supporting frame 1 rises with respect to the curing net stretching frame 2 which is supported by the N2 and N3 verandas 34 and 35 and cannot be lowered.
When the support frame 1 is raised, the arms 17a and 17b in the horizontally extended posture collide upward with the verandas 34 and 35 of N2 and N3 as shown in FIG.
As shown by phantom lines in FIG. 7, the arms 17a and 17b swing downward around the horizontal support shafts 21 and 22 against the urging force of the springs 30 and 31, and the verandas 34 and N3 of these N2 and N3. It is possible to pass through the position 35 without difficulty.

As shown by phantom lines in FIG. 8, the upper and lower arms 17a and 17b of the support frame 1 are raised above the handrails 35a of the N3 veranda 35 and the handrails 34a of the N2 veranda 34 so that the horizontal extension posture is achieved. When the support frame 1 is raised to a certain position, the motor 9
Reverse to rotate the chain 12 clockwise in FIG.
Therefore, the supporting frame 1 is used for the curing net tension frame 2.
Is slightly lowered, and the hooks 28 at the tips of the upper and lower arms 17a, 17b are connected to the handrails 35a and N2 of the N3 veranda 35.
The support frame 1 is hooked on the handrail 34a of the veranda 34, and is supported by the N2 and N3 verandas 34 and 35.

Subsequently, the motor 9 of the lifting drive means 8
When the chain 12 is rotated clockwise in FIG. 5, the support frame 1 is supported by the N2 and N3 verandas 34 and 35 and cannot be lowered.
The curing net stretching frame 2 will rise relatively. When the lower arm 18b of the curing net stretching frame 2 is stopped at a position above the handrail 35a of the N3 veranda 35, the curing net stretching frame 2 is moved as shown by a virtual line in FIG. At the N4 veranda work level, it stands vertically outside the building,
The curing net 5 (see FIG. 2) stretched over the frame 2 can function as a curing net at the time of constructing the N4 veranda 36 and the handrail 36a.

Thereafter, the supporting frame 1 and the curing net tension frame 2 are driven to move up and down relatively in the same manner as described above, so that the curing net tension frame 2 is moved to the N5 veranda work level and the N6 veranda work level. It can be raised in order and functioned.

Incidentally, as an elevating and lowering driving means for relatively elevating and lowering the support frame 1 and the curing net tension frame 2,
It is not limited to the chain drive shown in the above embodiment.
For example, a motor driven screw shaft is vertically supported on the support frame 1 side, and a nut portion that is screwed onto the screw shaft is provided on the curing net tension frame 2 side, or a rack gear is vertically installed on the support frame 1 side. And a rack-and-pinion type in which a motor-driven pinion gear that meshes with the pinion gear is provided on the curing net tensioning frame 2 side.

Each of the arms 17a, 17b and 18a,
The hooks on the building side with which the hooks provided at the tip of 18b engage are not limited to handrails as in the above-described embodiment. For example, as shown in FIG. The upper end portion 51a of the built-in veranda wall 51 can be used as the hook portion, and as shown in FIG.
Lower side 53a of opening 53 provided on outer wall 52 of the building
Can also be the hooked portion.

Further, each of the arms 17a, 17b and 18
The hooks provided at the distal ends of the hooks a and 18b may be configured in accordance with the cross-sectional shapes of the various hooks on the building side. External hooks 28 and 29 of the upper arms 17a and 18a receive external force, Since the hooks 28, 29 of the lower arms 17b, 18b tend to have an external force acting inward, as shown in FIG. 7, the hooks 28, 29 of the upper arms 17a, 18a have veranda handrails on the outside. And the like, and a contact surface 37 that makes surface contact with the hook portion to be hooked, and the lower arm 17b, 1
It is preferable that the hooks 28 and 29 of 8b are provided with a contact surface 38 which comes into surface contact with the hooks to be hooked such as a veranda handrail on the inner side.

[0022]

As described above, according to the external curing net lifting device of the present invention, the supporting frame is supported by the upper and lower two-layer veranda handrails on the building side using the upper and lower arms. In the state, the curing net tension frame can be moved up and down with respect to the support frame by the elevating and lowering drive means, and the upper and lower arms are used to transform the curing net tension frame into a balcony handrail of the upper and lower two layers on the building side. In the state of being engaged and supported, the support frame can be moved upward with respect to the curing net tension frame by the reverse drive of the elevating drive means. In addition, the upper and lower arms on the support frame side and the upper and lower arms on the curing net tensioning frame side both resist the urging force of the spring even if the arm collides upwardly with the overhanging portion such as the veranda on the building side during the upward movement. It swings and turns downward, and automatically returns to the horizontal overhanging posture after passing through the overhanging part.Therefore, simply raise it above the handrail of the veranda and then lower it to automatically move the hook part at the tip of the arm. Can be engaged with the veranda handrail or the like.

Therefore, by only moving the support frame and the curing net tensioning frame alternately up and down in a worm-like manner by the elevating and lowering drive means, the curing net tensioning frame is located immediately below the layer to be constructed. The supporting frame supported by the handrails of the veranda for two levels can be automatically raised and placed outside the level to be built to achieve the desired curing purpose.

With the use of the external curing net lifting device according to the present invention, the external curing net can be moved to the upper level mechanically without relying on humans. As a result, labor saving, safety improvement, and cost reduction of the work can be expected. Further, since the hooks on the hooks on the building side are simply supported by the upper and lower arms, the hooks can be easily and quickly removed in a strong wind and can be used safely.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a use state of an external curing net lifting device of the present invention.

FIG. 2 is a front view of the lifting device.

FIG. 3 is an enlarged front view of a main part of the lifting device.

FIG. 4 is an enlarged cross-sectional plan view showing a main part of the apparatus.

FIG. 5 is a partially cutaway side view showing a state where the support frame and the curing net tension frame are relatively moved up and down.

FIG. 6 is a partially longitudinal side view showing a main part of the apparatus.

FIG. 7 is a partially longitudinal side view showing a shaft support portion of the arm.

FIG. 8 is a schematic side view showing a state where the support frame is raised with respect to the curing net tension frame.

FIG. 9 is a vertical sectional side view showing another example of the hook portion on the building side.

FIG. 10 is a vertical cross-sectional side view showing still another example of the hooked portion on the building side.

FIG. 11 is a vertical sectional side view illustrating a conventional external curing method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Support frame, 2 ... Curing net tension frame, 5 ... Curing net, 6 ... Guide rail, 7 ... Roller unit, 8 ... Elevating drive means, 9 ... Motor with brake, 10 ... Drive tooth wheel, 11 ... Idling Tooth ring, 12 ... Chain, 13 ... Roller, 17a, 17b ... Upper and lower arms on the support frame side, 18a, 18b ... Upper and lower arms on the side of the frame for stretching the curing net, 21, 22, 26, 27 ... Arm pivot horizontal mounting Support shafts, 28, 29 ... Tip hooking parts, 30, 31 ... Arm biasing springs, 32 ... Stoppers, 33-36 ... Verandas, 33a-36a ... Handrails (hooked parts), N1-N4 ... Each building Numerals indicating the hierarchy, 51a: upper end of the veranda surrounding wall (hooked hook), 53a: lower edge of the opening (hooked hook).

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Norio Kato 4-6-115 Sendagaya, Shibuya-ku, Tokyo Inside Fujita Co., Ltd. (56) References JP-A-63-7471 (JP, A) 44345 (JP, U) Actually open sho 59-94547 (JP, U)

Claims (2)

(57) [Claims] 1. A support frame having a height of at least approximately two levels, a curing net tension frame having a height of approximately one level and supported by the support frame so as to be able to move up and down, and the support frame. And a curing net tensioning frame for moving up and down relative to each other, and two places in the vicinity of the upper and lower ends of the curing net tensioning frame and the same distance as the two places on the lower end side of the support frame. Upper and lower 2
And an arm having a hook at its tip for engaging with a veranda handrail or the like from above is pivotally supported between a substantially horizontal extending posture and a downward falling posture, and each arm is pivotally supported. External curing net lifting device that is equipped with a spring that biases upward. 2. A chain in which the lifting drive means is hooked on toothed wheels axially supported at upper and lower ends of the support frame, and both ends are locked at upper and lower ends of the curing net tension frame, and the chain. 2. The external curing net lifting device according to claim 1, further comprising a brake-equipped motor that drives the chain to rotate forward and backward through a tooth wheel that meshes with the external curing net.