Filling device and filling method for filler

Abstract

To suppress it from taking trouble to handle a filling device as the device becomes large-sized.SOLUTION: A filling device 21 comprises a reservoir part 22, a filling cylinder 23, a rotary shaft 24, and a screw 25. The reservoir part 22 is for reserving a filler 16, and can be arranged on a base plate 15. The filling cylinder 23 connects with the reservoir part 22 at a lower end of the reservoir part 22, and also connects with a hole 15a of the base plate 15 when the reservoir part 22 is arranged on the base plate 15. The rotary shaft 24 is supported rotatably on the reservoir part 22 to be located along the center line of the filling cylinder 23. The screw 25 is fixed to the rotary shaft 24, and rotates on the center line of the filling cylinder 23 in the filling cylinder 23 as the rotary shaft 24 rotates. Consequently, the filler 16 reserved in the reservoir part 22 is sent to the space between the base plate 15 and a floor slab 12 through the filling cylinder 23 and hole 15a with high pressure.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a filling device and a filling method for a filling material. [Background technology]

[0002] A seismic isolation device for a building is placed on a seismic isolation foundation that is installed on the floor slab of the building. The seismic isolation device supports the structure of the building located above the floor slab. The seismic isolation device is intended to prevent the vibration of the floor slab from being transmitted to the structure.

[0003] The seismic isolation foundation includes a base plate supported by a floor slab, and a cement-based filler that fills the gap between the base plate and the floor slab. The base plate has holes. A filling device arranged on the base plate sends a filler such as concrete through the holes to fill the gap between the base plate and the floor slab, thereby forming the seismic isolation foundation including the base plate and the filler.

[0004] As shown in Patent Document 1, the filling device includes a storage section for storing the filling material, a filling tube connected to the storage section at its lower end, and a shutter plate for prohibiting or allowing the passage of the filling material through the filling tube. The filling tube is connected to the hole in the base plate when the filling device is placed on the base plate.

[0005] When the passage of the filler in the filling tube is permitted by sliding the shutter plate, the filler stored in the storage section is sent by its own weight through the filling tube and the hole to between the base plate and the floor slab. When the passage of the filler in the filling tube is prohibited by sliding the shutter plate, the filler stored in the storage section is no longer sent to between the base plate and the floor slab. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 5462540 Summary of the Invention [Problem to be solved by the invention]

[0007] When filling material is sent between the base plate and the floor slab to form a seismic isolation foundation, air tends to accumulate under the base plate. If the air that accumulates under the base plate creates an air layer between the filling material under the base plate and the base plate in the seismic isolation foundation, the air layer may prevent the seismic isolation device from functioning properly.

[0008] In order to prevent the above-mentioned air gap from occurring in the base isolation foundation, it is possible to use a highly fluid filler and adjust the fluidity of the filler as follows: That is, when the filler is sent into the space between the base plate and the floor slab, the fluidity of the filler is adjusted so that the filler fills the space across the entire vertical width of the space. However, highly fluid filler is expensive, and it is not easy to adjust the fluidity of the filler as described above.

[0009] When using the above-mentioned highly fluid filler, the following issues must be addressed in terms of the production and management of the filler. -Manufacturing and management of filling materials is difficult.

[0010] · In order to ship fillers of consistent quality, manufacturers are required to have high quality control capabilities and experience. Due to transportation issues from the filler factory, filler can only be shipped from factories close to the site.

[0011] · Due to the technical limitations of factories, only a limited number of factories can ship highly fluid fillers. The management of fillers becomes more complicated, as the testing time and costs required for quality control of fillers increases.

[0012] In order to prevent the air gap from occurring in the base isolation foundation, it is also possible to send the filler material under high pressure between the base plate and the floor slab. In this case, even if a filler material with normal fluidity is used, the filler material can be sent between the base plate and the floor slab so that the filler material fills the space between the base plate and the floor slab over the entire vertical width.

[0013] As described above, the filling material can be sent to the space at high pressure by enlarging the storage section of the filling device. In this case, by storing a large amount of filler in the storage section, the weight of the filler stored in the storage section increases. As a result, when the filler stored in the storage section is sent to the space between the base plate and the floor slab by its own weight, the filler is sent to the space at high pressure. However, as the storage section becomes larger, the entire filling device becomes larger, which makes it more difficult to handle the filling device. [Means for solving the problem]

[0014] The means for solving the above problems and their effects will be described below. The filling device that solves the above problem can be placed on a base plate having a hole, and sends a cement-based filler between the base plate and a floor slab supporting the base plate through the hole. The filling device includes a storage section, a filling tube, a rotating shaft, and a screw. The storage section is for storing a filler and can be placed on the base plate. The filling tube is connected to the storage section at a lower end of the storage section and is connected to the hole when the storage section is placed on the base plate. The rotating shaft is rotatably supported with respect to the storage section so as to be located along the center line of the filling tube. The screw is fixed to the rotating shaft, and rotates within the filling tube around the center line of the filling tube as the rotating shaft rotates.

[0015] According to the above configuration, when the filler stored in the storage section is sent to the space between the base plate and the floor slab, the screw is rotated in the filling tube through the rotation of the rotating shaft. This rotation of the screw sends the filler stored in the storage section to the space between the base plate and the floor slab through the filling tube and the hole at high pressure. In this way, the filler stored in the storage section can be sent to the space at high pressure by the rotation of the screw, so there is no need to enlarge the storage section in order to send the filler to the space at high pressure. Therefore, the entire filling device does not become larger, and the handling of the filling device does not become more difficult due to the increase in size.

[0016] The filling device may include an input shaft extending in a direction intersecting with the rotation shaft, and a gear box that transmits rotation of the input shaft to the rotation shaft. According to the above configuration, since the input shaft extends in a direction intersecting the rotating shaft to which the screw is fixed, the filling device can be formed so that the input shaft extends in a direction that makes it easy to rotate. This makes it possible to easily rotate the input shaft, and the rotation can be transmitted to the rotating shaft to rotate the screw.

[0017] In the above-mentioned filling device, the gearbox may include a drive gear and a driven gear that mesh with each other. The drive gear is connected to the input shaft, and the driven gear is connected to the rotation shaft.

[0018] According to the above configuration, by replacing the drive gear and the driven gear with those having different numbers of teeth, it is possible to adjust the rotation speed of the rotating shaft relative to the rotation of the input shaft. In a method for filling a filler material that solves the above problem, a filling device is placed on a base plate having a hole. The filling device includes a filling tube that is connected to the hole when placed on the base plate. Then, by rotating a screw disposed inside the filling tube, the filler stored in the filling device is sent between the base plate and the floor slab that supports the base plate through the filling tube and the hole.

[0019] According to the above method, when the filler stored in the filling device is sent to the space between the base plate and the floor slab, the filler can be sent to the space at high pressure by the rotation of the screw arranged inside the filling tube. Therefore, the entire filling device does not become large in size in order to send the filler to the space at high pressure, and the handling of the filling device does not become troublesome due to the increase in size.

[0020] In the above-mentioned method of filling the filler, it is considered that after the filler is fed between the base plate and the floor slab, the filling device is carried from above the base plate with the rotation of the screw stopped or reversed.

[0021] According to the above method, after the filler is fed between the base plate and the floor slab, the rotation of the screw is stopped or reversed, thereby preventing the filler from falling out of the filling tube of the filling device. In this state, the filling device can be removed from above the base plate. Therefore, when removing the filling device from above the base plate, it is not necessary to provide the filling device with a valve mechanism or the like that operates to prohibit or allow the passage of the filler through the filling tube in order to prevent the filler from falling out of the filling tube.

[0022] In the above-mentioned method for filling a filler, it is considered that the filler is concrete whose quality is controlled by a slump test. According to the above method, concrete quality-controlled by a slump test, in other words, concrete with normal fluidity, is used as the filler. In contrast, if concrete with higher fluidity than the above concrete, i.e., concrete quality-controlled by a slump flow test, were used, the cost of concrete would increase and the handling of the concrete would be difficult in terms of production and management. However, instead of using highly fluid concrete, which is expensive and difficult to handle in terms of production and management, i.e., concrete quality-controlled by a slump flow test, as the filler, the management costs of the filler and the manufacturing costs of the seismic isolation foundation are reduced by using concrete with normal fluidity, i.e., concrete quality-controlled by a slump test, as the filler. [Brief description of the drawings]

[0023] [Figure 1] 1 is a schematic diagram showing a building, a foundation, and a seismic isolation device. [Diagram 2] FIG. [Diagram 3] 11A-11C are cross-sectional views showing a procedure for feeding filler between a base plate and a floor slab. [Figure 4] 11A-11C are cross-sectional views showing a procedure for feeding filler between a base plate and a floor slab. [Diagram 5] 11A-11C are cross-sectional views showing a procedure for feeding filler between a base plate and a floor slab. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of a filling device and a filling method for a filler will be described with reference to Figs. 1 to 5. As shown in Fig. 1, a seismic isolation device 13 of a building 11 is disposed on a floor slab 12 of the building 11. The seismic isolation device 13 supports a structure of the building 11 located on the floor slab 12. The seismic isolation device 13 is intended to prevent the vibration of the floor slab 12 from being transmitted to the structure. The seismic isolation foundation 14 includes a base plate 15 supported by the floor slab 12, and a cement-based filler 16 that fills the gap between the base plate 15 and the floor slab 12.

[0025] Examples of the cement-based filler 16 include concrete, mortar, and grout. In this embodiment, concrete, the quality of which is controlled by a slump test, is used as the filler 16. The base plate 15 has a hole 15a. The filler 16 is fed between the floor slab 12 and the base plate 15 through the hole 15a of the base plate 15, thereby forming a seismic isolation foundation 14 including the base plate 15 and the filler 16.

[0026] <Filling equipment> 2 shows a filling device 21 for feeding the filler 16 between the floor slab 12 and the base plate 15. The filling device 21 includes a storage section 22, a filling tube 23, a rotating shaft 24, and a screw 25.

[0027] The storage section 22 is for storing the filler 16, and can be arranged on the base plate 15. The storage section 22 has a plurality of support legs 26 for supporting the storage section 22 on the base plate 15 when arranged on the base plate 15. The filling tube 23 is located below the storage section 22, and is connected to the inside of the storage section 22 at the lower end of the storage section 22. When the storage section 22 is arranged at a position corresponding to the hole 15a in the base plate 15, the filling tube 23 is connected to the hole 15a.

[0028] The rotating shaft 24 is rotatably supported with respect to the storage section 22 so as to be positioned along the center line of the filling tube 23. More specifically, the rotating shaft 24 extends along the center line of the filling tube 23. The rotating shaft 24 is rotatable with respect to a support bar 27 disposed inside the storage section 22, and is supported by the storage section 22 via the support bar 27. The screw 25 is fixed to the rotating shaft 24, and rotates within the filling tube 23 around the center line of the filling tube 23 as the rotating shaft 24 rotates.

[0029] The filling device 21 includes an input shaft 28 extending in a direction intersecting with the rotating shaft 24, and a gear box 29 that transmits the rotation of the input shaft 28 to the rotating shaft 24. The rotating shaft 24 extends in the vertical direction along the center line of the filling tube 23. The input shaft 28 extends in a direction perpendicular to the rotating shaft 24, and is connected to the rotating shaft 24 via the gear box 29. The rotating shaft 24 protrudes outward from the storage section 22, and is supported rotatably relative to the storage section 22. A handle 30 for rotating the rotating shaft 24 is attached to the portion of the rotating shaft 24 that protrudes outward from the storage section 22.

[0030] The gear box 29 includes a drive gear 31 and a driven gear 32 that mesh with each other. The drive gear 31 is connected to the input shaft 28 inside the gear box 29. The driven gear 32 is connected to the rotating shaft 24 inside the gear box 29. The drive gear 31 and the driven gear 32 of the gear box 29 can be replaced with different gears having different numbers of teeth. By replacing them in this way, it is possible to adjust the rotation speed of the rotating shaft 24 relative to the rotation of the input shaft 28.

[0031] <How to fill with filler 16> 3 to 5 show the procedure for forming the seismic isolation foundation 14 on the floor slab 12. As shown in Fig. 3, the base plate 15 of the seismic isolation foundation 14 is supported by a plurality of supports 33 at a predetermined interval from the floor slab 12. A formwork 34 is arranged around the base plate 15 on the floor slab 12 so as to surround the base plate 15. Then, a filling device 21 is arranged on the base plate 15.

[0032] Storage section 22 of filling device 21 is supported on base plate 15 by a plurality of support legs 26. Then, storage section 22 is positioned on base plate 15 so that filling tube 23 of filling device 21 is connected to hole 15a of base plate 15. Then, filler 16 is poured into storage section 22. At this time, screw 25 in filling tube 23 prevents filler 16 stored in storage section 22 from dropping into hole 15a of base plate 15 via filling tube 23.

[0033] When the input shaft 28 is rotated by turning the handle 30 while the filler 16 is stored in the storage section 22, the rotation is transmitted to the rotating shaft 24 via the gear box 29. When the rotating shaft 24 rotates through the transmission of rotation from the input shaft 28, the screw 25 fixed to the rotating shaft 24 rotates together with the rotating shaft 24 inside the filling tube 23. As a result, the filler 16 stored in the storage section 22 is sent at high pressure between the base plate 15 and the floor slab 12 through the filling tube 23 and the hole 15a as shown in FIG.

[0034] As a result, even if concrete having normal fluidity is used as the filler 16, the filler 16 can be fed into the space between the base plate 15 and the floor slab 12 so as to fill the space across the entire vertical width. The pressure for feeding the filler 16 between the base plate 15 and the floor slab 12 in this manner can be adjusted by changing the rotation speed of the rotating shaft 24 and the screw 25 through changing the rotation speed of the handle 30.

[0035] 5 shows a state in which the filler 16 is filled between the base plate 15 and the floor slab 12 and in the area surrounded by the formwork 34. After filling with the filler 16 is completed in this way, the rotation of the screw 25 is stopped by stopping the rotation of the handle 30. Then, with the rotation of the screw 25 stopped, the filling device 21 is carried from above the base plate 15. At this time, since the rotation of the screw 25 is stopped, the filler 16 stored in the storage section 22 is prevented from falling from the filling tube 23. After the seismic isolation foundation 14 including the base plate 15 and the filler 16 is formed in this way, the formwork 34 is removed from the seismic isolation foundation 14.

[0036] According to the present embodiment described above in detail, the following advantageous effects can be obtained. (1) When the filler 16 stored in the storage section 22 of the filling device 21 is sent to the space between the base plate 15 and the floor slab 12, the screw 25 is rotated in the filling tube 23 through the rotation of the rotating shaft 24. By the rotation of the screw 25, the filler 16 stored in the storage section 22 is sent to the space between the base plate 15 and the floor slab 12 through the filling tube 23 and the hole 15a at high pressure. Since the filler 16 stored in the storage section 22 can be sent to the space at high pressure by the rotation of the screw 25 in this way, it is not necessary to enlarge the storage section 22 in order to send the filler 16 to the space at high pressure. Therefore, the entire filling device 21 does not become large, and the handling of the filling device 21 does not become troublesome due to the enlargement.

[0037] (2) The rotating shaft 24 to which the screw 25 is fixed is rotatably supported by the support bar 27 relative to the storage section 22. For this reason, when the rotating shaft 24 rotates, the center of rotation is likely to wobble at the point on the rotating shaft 24 to which the screw 25 is fixed. However, such wobble of the center of rotation is suppressed by the screw 25 being placed inside the filling tube 23. In this way, by suppressing the wobble of the center of rotation at the point on the rotating shaft 24 to which the screw 25 is fixed, the rotation of the rotating shaft 24 can be stabilized.

[0038] (3) The filler 16 stored in the storage section 22 is sent to the space between the base plate 15 and the floor slab 12 under high pressure by the rotation of the screw 25. Therefore, even if concrete quality-controlled by a slump test, in other words concrete with normal fluidity, is used as the filler 16, the filler 16 can be sent to the space between the base plate 15 and the floor slab 12. If concrete quality-controlled by a slump flow test, in other words concrete with high fluidity, is used as the filler 16, the price of the concrete increases and handling in terms of production and management becomes difficult. However, instead of using concrete quality-controlled by a slump flow test, in other words concrete with high fluidity, which is expensive and difficult to handle in terms of production and management, as the filler 16, concrete quality-controlled by a slump test, in other words concrete with normal fluidity, is used as the filler 16 as described above. Therefore, handling of the filler 16 in terms of production and management becomes easier, and the management cost of the filler 16 and the manufacturing cost of the seismic isolation foundation 14 can be kept low.

[0039] (4) In the filling device 21, the input shaft 28 extends in a direction intersecting with the rotating shaft 24 to which the screw 25 is fixed, so that the filling device 21 can be formed so that the input shaft 28 extends in a direction that makes it easy to rotate. This makes it easy to rotate the input shaft 28, and the rotation can be transmitted to the rotating shaft 24 to rotate the screw 25.

[0040] (5) By replacing the drive gear 31 and the driven gear 32 in the gear box 29 with those having different numbers of teeth, the rotation speed of the rotary shaft 24 relative to the rotation of the input shaft 28 can be adjusted.

[0041] (6) After the filling material 16 is sent between the base plate 15 and the floor slab 12 by the filling device 21, the filling device 21 is carried from above the base plate 15 with the rotation of the screw 25 stopped. With the rotation of the screw 25 stopped, the filling material 16 is prevented from falling from the filling tube 23 of the filling device 21. In this state, the filling device 21 can be carried out from above the base plate 15. Therefore, it is not necessary to provide the filling device 21 with a valve mechanism or the like that operates to prohibit or allow the passage of the filling material 16 in the filling tube 23. In other words, when carrying out the filling device 21 from above the base plate 15, it is not necessary to prohibit the passage of the filling material 16 in the filling tube 23 by the above-mentioned valve mechanism so that the filling material 16 does not fall from the filling tube 23.

[0042] The above embodiment can be modified, for example, as follows: The above embodiment and the following modified examples can be combined with each other to the extent that no technical contradiction occurs. The filler 16 does not have to be fed into the entire space between the base plate 15 and the floor slab 12 at once. For example, the filler 16 may be fed into a lower portion of the space, allowed to dry, and then fed into the remaining portion of the space.

[0043] When the filling device 21 is moved from above the base plate 15, the screw 25 may be rotated in the opposite direction to when the filling material 16 is fed between the base plate 15 and the floor slab 12. In this case, the same effect as in (4) above can be obtained.

[0044] Instead of attaching the handle 30 to the input shaft 28, a motor or the like may be connected to the input shaft 28 so that the input shaft 28 is rotated by the motor or the like. The input shaft 28 and the gear box 29 may be omitted. In this case, the rotating shaft 24 is directly rotated by a handle, a motor, or the like.

[0045] The floor slab on which the seismic isolation foundation 14 is provided does not necessarily have to be the floor slab 12 located at the lower end of the building 11. For example, when the seismic isolation device 13 is provided on an intermediate floor of the building 11, it is possible to provide the seismic isolation foundation 14 on a floor slab located on an intermediate floor of the building 11. [Explanation of symbols]

[0046] 11. Building 12...Floor slab 13…Seismic isolation device 14…Seismic isolation foundation 15…Base plate 15a…hole 16...Filling material 21...Filling device 22…Storage section 23…Filling cylinder 24…Rotation axis 25…Screw 26…Support leg 27…Support bar 28…Input shaft 29…Gearbox 30…Handle 31…Drive gear 32…Driven gear 33...Support part 34…Formwork

Claims

1. 1. A filling device capable of being placed on a base plate having holes therein, the filling device delivering a cement-based filler material between the base plate and a floor slab supporting the base plate through the holes, the filling device comprising: The device includes a storage section, a filling tube, a rotating shaft, and a screw. the reservoir is for storing the filler and is capable of being disposed on the base plate; the filling tube is connected to the storage portion at a lower end thereof and is connected to the hole when the storage portion is disposed on the base plate; The rotation shaft is rotatably supported with respect to the storage section so as to be positioned along the center line of the filling cylinder, The screw is fixed to the rotating shaft and rotates within the filling cylinder around the center line of the filling cylinder as the rotating shaft rotates.

2. The filling device according to claim 1 , further comprising: an input shaft extending in a direction intersecting the rotation shaft; and a gear box for transmitting rotation of the input shaft to the rotation shaft.

3. The gear box includes a drive gear and a driven gear that mesh with each other, 3. The filling device according to claim 2, wherein the drive gear is connected to the input shaft and the driven gear is connected to the rotary shaft.

4. A method for filling a filler, comprising the steps of: placing a filling device on a base plate having holes; and feeding a cement-based filler stored in the filling device through the holes between the base plate and a floor slab supporting the base plate, the method comprising the steps of: the filling device includes a filling tube that is connected to the hole when the filling device is placed on the base plate; A method for filling filler, in which the filler stored in the filling device is sent between the base plate and the floor slab through the filling tube and the hole by rotating a screw arranged inside the filling tube.

5. The method for filling the filler as described in claim 4, wherein after the filler is fed between the base plate and the floor slab, the filling device is transported from above the base plate with the rotation of the screw stopped or reversed.

6. 6. The method for filling a filler according to claim 4, wherein the filler is concrete whose quality is controlled by a slump test.

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