JP4405950B2 - Lifting device for construction materials - Google Patents

Description

  The present invention relates to a lifting device for construction materials.

In construction work such as super high-rise RC apartment buildings, the function of transporting diverted members such as formwork and support materials from the lower floor to the upper floor for the purpose of reducing the load on the tower crane at the time of building the building and the outside by the tower crane An elevating device having a stage function for receiving materials such as ALC plates carried in is devised and put into practical use at many construction sites (for example, see Patent Document 1).
JP 2001-214614 A

However, the current lifting device uses a plurality of electric chain hoists to raise and lower the stage on which the material is loaded, and has the following problems.
(1) Since a plurality of electric chain hoists installed in the uppermost layer are large, the electric chain hoist becomes an obstacle when taking a long material such as an ALC plate from the upper opening, and it takes time to take in the material.
(2) In the case of using a plurality of lifting drive units, a difference occurs in the amount of lifting of the lifting chain or wire rope while the lifting operation is repeated, and the level of the lifting stage becomes out of order. Therefore, a complicated control mechanism for suppressing or correcting this deviation is necessary. As a result, there is a problem that the cost of the lifting device is increased or that it takes time to maintain reliability.

  The present invention has been made in view of the above-described problems. Construction materials can be easily taken in from an upper opening, and a synchronization control mechanism for ensuring levelness is not required, so that it can be moved up and down at high speed. An object of the present invention is to provide a lifting device for a construction material having a stage.

  In order to achieve the above object, the present invention provides a three-dimensional frame having a rectangular shape in plan view having substantially the same height as a plurality of floors of a structure, an elevating stage that moves up and down in the three-dimensional frame, and the top of the three-dimensional frame. A construction material lifting device, comprising: a driving device that is installed in an upper layer and lifts and lowers the lifting stage; and an outrigger that fixes and supports the three-dimensional frame to the structure. The first rotating shaft installed along the uppermost beam and connected to the electric motor via the first speed reducer, and connected to the both ends of the first rotating shaft via the second speed reducer, A pair of side-by-side second rotation shafts orthogonal to the one rotation axis, and one end of a chain wound around a sprocket attached to each of the pair of side-by-side second rotation shafts, Wherein the elevation stage is coupled.

  When the electric motor is operated, the driving force decelerated by the first reduction gear is transmitted from the first rotation shaft to the pair of second rotation shafts arranged in parallel via the second reduction gear. When the sprocket rotates with the pair of second rotating shafts, the chain wound around the sprocket moves up and down, and the lifting stage moves up and down. In the case of this drive device, since the rotation of the electric motor is transmitted to each sprocket under the same conditions, the elevating stage is always maintained horizontal and can be moved up and down at high speed.

  According to the present invention, since the drive mechanism is compact, the upper opening area of the three-dimensional frame is increased as compared with the conventional one, and long materials such as ALC plates can be taken in without any trouble. In addition, since the level of the elevating stage is always maintained, a complicated tuning control mechanism is not required, and the elevating stage can be speeded up.

  In the present invention, the balance weight connected to the other end of the chain may move up and down in the guide pipe extending in the vertical direction.

  For the other end of the chain, a chain bucket or the like may be provided near the sprocket, and the chain may be taken in and out of the chain. However, when the lifting stage is raised (when the unloaded side chain is fed out), the sprocket and chain Play may occur at the contact portion, and abnormal noise and vibration may occur. In the present invention, in order to prevent this phenomenon, by connecting a balance weight to the chain, a tension is always applied to the chain on the no-load side to stabilize the rotation of the sprocket. Further, the balance weight is moved up and down in the guide pipe extending in the vertical direction so that the balance weight can be smoothly moved up and down.

  In the construction material lifting apparatus according to the present invention, the driving force decelerated by the first reduction gear is transmitted from the first rotation shaft to the pair of second rotation shafts arranged side by side through the second reduction device. When the sprocket attached to the second rotating shaft rotates, it is a compact drive mechanism in which the elevating stage moves up and down together with the chain wound around the sprocket. For this reason, the upper opening area of the three-dimensional frame is increased as compared with the conventional case, and a long material such as an ALC plate can be taken in without much trouble. In addition, since the level of the elevating stage is always maintained, a complicated tuning control mechanism is not required, and the elevating stage can be speeded up.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a construction material lifting apparatus according to the present invention will be described based on the drawings.
FIG. 1 shows a construction material lifting device 1 according to the present invention, and FIGS. 2 and 3 show details of a lifting stage 3 and a driving device 4.

  The elevating device 1 is configured such that the elevating stage 3 moves up and down in the three-dimensional frame 2 and is used by being disposed in an opening of a blow-off provided in the structure S 1. After fixing the three-dimensional frame 2 to the structure S with the outrigger 6, the construction material is transported from the lower floor to the upper floor or from the upper floor to the lower floor using the elevating stage 3.

  The three-dimensional frame 2 has the same floor height as the structure S and is a rectangular frame structure having a height of four layers, and is rectangular in plan view. The side surface and the rear surface where no load is taken in and out are reinforced with braces 2c and 2d. Has been.

The three-dimensional frame 2 is provided with a pair of outriggers 6 and 6 that can project and retract in the horizontal direction from the three-dimensional frame 2. by being fixed on the beam S _B of the three-dimensional frame 2 is fixedly supported by the structure S.
The position of the three-dimensional frame 2 can be changed if the outriggers 6 and 6 are retracted and lifted by a crane or the like.

   The elevating stage 3 is provided with a pair of stage outriggers 7 and 7 that can project and retract in the horizontal direction at the side ends, and these stage outriggers 7 and 7 can project to the position of the beam 2b of the three-dimensional frame 2. ing. By projecting the stage outriggers 7 and 7 and placing the tip of the stage outrigger 7 on the beam 2b of the three-dimensional frame 2 and supporting the elevating stage 3 with the three-dimensional frame 2, loading and unloading can be performed safely. .

A driving device 4 for raising and lowering the elevating stage 3 is installed on the uppermost beam 2 a of the three-dimensional frame 2, and the elevating stage 3 is suspended from the driving device 4 by a chain 5.
The driving device 4 has a U-shape in plan view, and is installed directly below the beam 2a along the uppermost beam 2a. Specifically, the drive device 4 includes a first rotating shaft 11 installed directly below the beam 2a along the uppermost beam 2a of the three-dimensional frame 2, and a first rotating shaft via the first speed reducer 13. 11 and a pair of juxtaposed second rotations that are connected to both ends of the first rotating shaft 11 via second speed reducers 14 and 14, respectively, and orthogonal to the first rotating shaft 11. The shafts 12 and 12 are roughly configured.
Two sprockets 15 and 15 are respectively attached to the pair of second rotary shafts 12 and 12, and the lifting stage 3 is connected to one end of the chain 5 wound around each sprocket 15. .
As the second reduction gear 14, a worm reduction gear consisting of a worm gear and a worm wheel, which can obtain a large reduction ratio in one stage, is used.

  A balance weight 9 is connected to the other end of each chain 5. The balance weight 9 moves up and down in the guide pipe 8 that is attached to the three-dimensional frame 2 and extends in the vertical direction as the lifting stage 3 moves up and down. FIG. 4 shows the guide pipe 8 and FIG. 5 shows the relative positional relationship between the elevating stage 3 and the balance weight 9.

When the motor 16 with brake is operated, the driving force decelerated by the first reduction gear 13 is transferred from the first rotation shaft 11 to the pair of second rotation shafts 12 and 12 arranged in parallel via the second reduction gears 14 and 14. Communicated. When the sprockets 15 are rotated together with the pair of second rotating shafts 12, 12, the chains 5 wound around the sprockets 15 are moved in the vertical direction, and the elevating stage 3 is moved up and down.
If gears are installed at both ends of the lifting stage and the chain is spanned between both gears, the lifting stage can be lifted and lowered by half the number of chains. Will double, leading to a decrease in the lifting speed.

  An operation panel 10 for driving the driving device 4 and the stage outrigger 7 is installed on the side surface of the three-dimensional frame 2. One end of the operation panel 10 is pivotally supported by the three-dimensional frame 2, and when the position of the lifting device 1 is changed, the operation panel 10 is rotated in a horizontal plane and stored in the three-dimensional frame 2.

Next, a method for conveying construction materials from a predetermined floor to an upper floor using the lifting device 1 will be described.
First, the driving device 4 is driven to stop the elevating stage 3 on a predetermined floor of the structure S 1, and the stage outrigger 7 is protruded and supported by the beam 2 b of the three-dimensional frame 2. From this state, the gate (not shown) installed on the structure S side is opened, and the construction material is carried from the predetermined floor of the structure S to the lifting stage 3. Then, the driving device 4 is driven to move the lifting / lowering stage 3 slightly upward to stop, the stage outrigger 7 is retracted and stored in the lifting / lowering stage 3, and the driving device 4 is driven again to move the lifting / lowering stage 3. Move further upward.
Next, when the elevating stage 3 rises to a position slightly above the slab on the upper floor, the driving device 4 is stopped, the stage outrigger 7 is protruded, the driving device 4 is driven again, and the stage outrigger 7 Is supported by the beam 2b of the three-dimensional frame 2. Then, the construction material is carried from the lift stage 3 to the upper floor.
Through the above series of operations, construction materials can be transported from a predetermined floor to an upper floor. The procedure for transporting construction materials from the designated floor to the lower floor follows the same procedure.

Next, a procedure for changing the position of the lifting device 1 from a predetermined floor to an upper floor will be described.
First, removal while retaining the three-dimensional frame 2, the anchor bolts (not shown) securing the outrigger 6 the beam S _B of the structure S with a crane (not shown). Further, the operation panel 10 is stored in the 3D frame 2. Then, slightly increase the space frame 2 by a crane, to the earth cutting the outriggers 6 from the beam S _B of the structure S. Then, after the outrigger 6 is retracted, the solid frame 2 is raised by the crane.
When the position of the lifting / lowering stage 3 is slightly above the slab on the upper floor, the rising of the solid frame 2 is stopped and the outrigger 6 is protruded, and then the solid frame 2 is lowered and the outrigger 6 is moved to the structure to land on the S of the beam _{S B.} Then, fixed with anchor bolts outriggers 6 to the beam S _B of the structure S.
Through the above series of operations, the reordering of the lifting device 1 from the predetermined floor to the upper floor is completed. It should be noted that the rearrangement of the lifting device 1 from the predetermined floor to the lower floor follows the same procedure.

  In the construction material lifting and lowering apparatus 1 according to the present embodiment, a pair of second rotary shafts 12 in which the driving force decelerated by the first speed reducer 13 is provided in parallel from the first rotary shaft 11 via the second speed reducer 14; 12 and the pair of second rotating shafts 12, 12 are rotated together with the sprocket 15 ..., the chain 5 ... wound around the sprocket 15 ... is a compact drive mechanism in which the elevating stage 3 moves up and down. . For this reason, compared with the past, the upper opening area of the three-dimensional frame 2 becomes large, and it is possible to take in a long material such as an ALC plate without trouble. In addition, since the rotation of the motor 16 with brake is transmitted to each sprocket 15 under the same conditions, the elevating stage 3 is always in a horizontal state and can be moved up and down at high speed. As a result, the cost of the lifting device can be reduced and the reliability can be improved.

  As mentioned above, although embodiment of the raising / lowering apparatus of the construction material which concerns on this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably. For example, in the above embodiment, the three-dimensional frame has four layers, but it goes without saying that the three-dimensional frame may be three layers or five layers. The point is that the desired function can be obtained in the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The construction material raising / lowering apparatus which concerns on this invention is shown, (a) is the front view, (b) is a side view, (c) is a rear view. It is a side view of a raising / lowering stage and a drive device. It is a rear view of a raising / lowering stage and a drive device. A guide pipe is shown, (a) is the front view, (b) is an AA arrow sectional view. The relative positional relationship between the lifting stage and the balance weight is shown, in which (a) shows a state where the lifting stage is in the lowermost layer, and (b) shows a state where the lifting stage is in the uppermost layer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lifting apparatus 2 Three-dimensional frame 3 Lifting stage 4 Drive apparatus 5 Chain 6 Outrigger 7 Stage outrigger 8 Guide pipe 9 Balance weight 10 Operation panel 11 First rotating shaft 12 Second rotating shaft 13 First speed reducer 14 Second speed reducer 15 Sprocket 16 Electric motor S with brake structure

Claims (2)

A three-dimensional frame having a rectangular shape in plan view having substantially the same height as a plurality of floors of the structure, an elevating stage that moves up and down in the three-dimensional frame, and installed on the uppermost layer of the three-dimensional frame, A lifting and lowering device for a construction material, comprising: a driving device that moves up and down; and an outrigger that fixes and supports the three-dimensional frame to the structure.
The driving device is installed along the uppermost beam of the three-dimensional frame, and is connected to the electric motor via the first reduction gear, and the second reduction gears at both ends of the first rotation shaft, respectively. A pair of juxtaposed second rotary shafts connected through a machine and orthogonal to the first rotary shaft,
A lifting device for a construction material, wherein the lifting stage is connected to one end of a chain wound around a sprocket attached to each of the pair of second rotating shafts arranged side by side.   The lifting / lowering device for a construction material according to claim 1, wherein a balance weight connected to the other end of the chain moves up and down in a guide pipe extending in a vertical direction.

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