Filling device

Abstract

To provide a filling device that allows a sliding plate to slide smoothly regardless of the weight of the cement-based material loaded onto the sliding plate that opens and closes the hollow of a hopper containing cement-based materials. [Solution] The filling device 100 includes a hopper 10, a first cylindrical member 20, a replaceable second cylindrical member 30, a slide plate 40, and a sliding means 50 for sliding the slide plate 40. The sliding means 50 includes a bolt 51 with one end rotatably attached to the first cylindrical member 20, a moving means 55 attached to the slide plate 40 and screwed onto the bolt 51, which moves laterally as the bolt 51 rotates, and an actuator 59 for rotating the bolt 51. As the slide plate 40 slides, the cement-based material C inside the hopper 10 and the first cylindrical member 20 is filled below the steel plate P through the first opening Pa of the steel plate P.

Description

Technical Field

[0001] The present invention relates to a filling device for filling cement-based materials.

Background Art

[0002] In the construction of concrete structures, generally, a hose is extended from a truck mixer (agitator truck) to the placement location of cement-based materials such as concrete, and the fresh cement-based materials being kneaded in the truck mixer are pumped by the discharge pressure of the truck mixer, thereby placing the cement-based materials.

[0003] However, depending on the situation at the construction site, there may be cases where the truck mixer cannot access the placement location of the cement-based materials, or the distance from the access location of the truck mixer to the placement location exceeds the pumping distance that enables the pumping of the cement-based materials. At such construction sites, since the cement-based materials cannot be placed by pumping with a truck mixer, a bucket is placed at a position where the cement-based materials can be pumped, and first, the bucket is filled with the cement-based materials. Next, the bucket filled with the cement-based materials is transported by workers using a trolley to the placement location of the cement-based materials or lifted and transported by a heavy machine, and then the cement-based materials are poured into the placement location, thereby placing the cement-based materials.

[0004] When the cement-based materials are pumped by a truck mixer, although the pumping force when placing the cement-based materials decreases according to the pumping distance, the reduced pumping force can fill the cement-based materials over a relatively wide range. On the other hand, in the method of pouring the cement-based materials into the placement location, since there is no pumping force of the truck mixer, for example, by filling while dropping the cement-based materials from as high a place as possible, it becomes possible to fill a wide range by utilizing the potential energy of the cement-based materials. In such a case, a method of installing a hopper with a certain height at the placement position and using the height of the hopper to place the cement-based materials can be considered.

[0005] A hopper has a hollow section for containing cement-based materials and an opening that communicates with the hollow section and discharges the cement-based materials downwards. However, in some cases, a hopper is used that has a sliding plate or the like that can slide laterally in the lower opening or nearby in order to contain a certain amount of cement-based materials in the hollow section. By closing the opening with the sliding plate and accumulating a certain amount of cement-based materials in the hollow section of the hopper, the sliding plate can be slid to open the opening, allowing the certain amount of cement-based materials contained in the hopper to be poured in all at once.

[0006] However, it is difficult to manually slide a slide plate that is loaded with a certain amount of cement-based material, and this problem becomes even more pronounced as the amount of cement-based material stored in the hopper increases and the load increases.

[0007] Based on the above, regarding a filling device in which a sliding plate can be opened and closed within the hollow of a hopper containing cement-based materials, a filling device is desired that can smoothly slide the sliding plate regardless of the weight of the cement-based materials loaded onto the sliding plate.

[0008] Here, Patent Document 1 proposes a filling device for filling the lower part of the base plate of a seismic isolation device with a filling material such as high-flow concrete or grout material (mortar). This filling device is used when constructing a seismic isolation foundation to fill the lower part of the base plate from injection holes provided in the base plate. It comprises a hopper support stand installed so as to straddle the formwork, and a hopper supported by the hopper support stand. The hopper comprises a storage section for storing the filling material, a filling material discharge port for discharging the filling material, and an on / off valve provided below the storage section. The hopper support stand supports the hopper so that the filling material discharge port of the hopper is positioned above the injection holes in the base plate. The on / off valve is formed by a shutter valve device, which is a mechanism for opening or closing the cylindrical passage of the small-diameter cylindrical part of the hopper, and comprises a shutter plate and a shutter plate operating rod. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Japanese Patent Publication No. 2010-127035 [Overview of the project] [Problems that the invention aims to solve]

[0010] The filling device described in Patent Document 1 states that by operating a shutter plate operating rod to open and close the filling material discharge port of the hopper with the shutter plate, it is possible to store filling material in the hopper and to fill the hopper with filling material from the hopper. However, this filling device does not disclose a means to smoothly slide a slide plate that is loaded with a certain amount of cement-based material.

[0011] The present invention has been made in view of the above problems, and relates to a filling device in which a sliding plate can be opened and closed in the hollow of a hopper containing cement-based materials, and aims to provide a filling device in which the sliding plate can be slid smoothly regardless of the weight of the cement-based material loaded onto the sliding plate. [Means for solving the problem]

[0012] To achieve the above objective, one embodiment of the filling apparatus according to the present invention is: A filling apparatus for manufacturing a cement-based member having a steel plate with a first opening for filling with cement-based material at its top surface, A truncated cone or truncated pyramidal hopper is provided, which is arranged such that its cross-section becomes smaller from top to bottom, has a hollow interior, and has a second opening at its lower end that communicates with the hollow and communicates with the first opening without any gaps, A sliding plate, which has a third opening and is slidably disposed laterally via a side opening located midway along the wall surface of the hopper, It has a sliding means for sliding the aforementioned slide plate, The aforementioned sliding means is A bolt, with one end rotatably attached to the hopper, A moving means that is directly or indirectly attached to the slide plate, screwed onto the bolt, and moves laterally by the rotation of the bolt, The system includes an actuator for rotating the bolt, The sliding of the sliding plate causes the third opening to be aligned with the hollow, and the cement-based material in the hollow is filled below the steel plate through the first opening.

[0013] According to this embodiment, the sliding means for sliding a slide plate, which is disposed in a side opening located midway along the wall of the hopper, in the lateral direction comprises a bolt with one end rotatably attached to the hopper, a moving means that is directly or indirectly attached to the slide plate and screws onto the bolt to move laterally by the rotation of the bolt, and an actuator that rotates the bolt. As a result, the slide plate can be smoothly slid by the sliding means regardless of the weight of the cement-based material loaded onto the slide plate.

[0014] In this embodiment, the hopper is installed such that a second opening at the lower end of the hopper is in seamless communication with a first opening in a steel plate embedded in the top surface of the cement-based member. This prevents the cement-based material from leaking upward through gaps, while effectively allowing the cement-based material to flow downward and to the side of the steel plate. When filling with the cement-based material, a formwork in the shape of a frame in plan view (such as a rectangular or annular frame in plan view) is installed around the steel plate, which is positioned at a predetermined height. The cement-based material is then filled into the formwork, thereby producing a cement-based member in which the steel plate is embedded in the top surface of the hardened cement-based material.

[0015] At an intermediate position on the wall of the hopper, for example, a pair of side openings are provided at opposing positions separated by a hollow space, and a sliding plate with a third opening is passed through the pair of side openings, thereby opening and closing the hollow space of the hopper as the sliding plate slides, for example, horizontally.

[0016] Hoppers have truncated cone or truncated pyramidal shapes, with truncated pyramidal shapes including truncated square pyramids (square, rectangular) and other truncated polygonal pyramids. Cement-based materials include mortar (including high-flow mortar) and concrete (including high-flow concrete).

[0017] For example, if the cement-based component manufactured by the filling device of this embodiment is a lower component constituting a seismic isolation bearing, in which a base plate made of steel plate is embedded on the top surface, then the lower component constituting the seismic isolation bearing can be manufactured (installed) efficiently and with high quality even at construction sites that are inaccessible to truck mixers. The lower component constituting this seismic isolation bearing is formed, for example, by embedding a base plate made of steel plate on the top surface of a concrete base that is circular or octagonal in plan view, and then installing a rubber bearing on top of the base plate, for example, with a circular sliding material fitted onto its upper surface. An upper component consisting of a sole plate and a sliding plate is placed on top of this rubber bearing, thereby forming a seismic isolation device (elastic sliding bearing) consisting of the lower component and the upper component. There are various forms of seismic isolation bearings, and the types of lower components manufactured by the filling device of this embodiment are diverse.

[0018] Furthermore, other embodiments of the filling apparatus according to the present invention include: A filling apparatus for manufacturing a cement-based member having a steel plate with a first opening for filling with cement-based material at its top surface, A truncated cone or truncated pyramidal hopper is provided, which is arranged such that its cross-section becomes smaller from top to bottom, has a first hollow inside, and has a second opening at its lower end that communicates with the first hollow, Connected to the lower end of the hopper, having a second hollow, provided with a fourth opening at the lower end that communicates with the second hollow and communicates with the first opening without a gap, and adjusts the falling height of the cementitious material, a cylindrical or square tubular member, Provided with a third opening, and a slide plate that is disposed slidably in the lateral direction through a side opening located in the middle of the wall surface of the tubular member, It has slide means for sliding the slide plate, The slide means is, A bolt having one end rotatably attached to the tubular member, A moving means that is directly or indirectly attached to the slide plate, engages with the bolt, and moves in the lateral direction by the rotation of the bolt, And an actuator for rotating the bolt, When the third opening is aligned with the second hollow by the sliding of the slide plate, the cementitious material in the second hollow and the first hollow is filled below the steel plate through the first opening.

[0019] According to this aspect, a cylindrical or square tubular member for adjusting the falling height of the cementitious material is provided at the lower end of the hopper, so that the falling height of the cementitious material can be adjusted as desired without increasing the scale of the hopper. For example, when the planar dimension of the cementitious member is large, by setting the length of the tubular member to be long, the potential energy of the cementitious material can be increased, and for example, without adding an additive that imparts high fluidity to the cementitious material, the cementitious material can be sufficiently spread to the mold for manufacturing the cementitious member.

[0020] Another aspect of the filling device according to the present invention is, A filling device for manufacturing a cementitious member having a steel plate with a first opening filled with a cementitious material at the top end, A hopper in the shape of a truncated cone or a truncated pyramid is arranged such that its cross-section becomes smaller from top to bottom, has a first hollow inside, and has a second opening communicating with the first hollow at its lower end. A cylindrical or square cylindrical first cylindrical member connected to the lower end of the hopper, having a second hollow, having a fourth opening at its lower end, and adjusting the falling height of the cementitious material. A cylindrical or square cylindrical second cylindrical member connected to the lower end of the first cylindrical member, having a third hollow, having a fifth opening communicating with the third hollow and communicating with the first opening without a gap at its lower end, and being replaceable. A slide plate having a third opening and arranged to be slidable horizontally through a side opening located in the middle of the wall surface of the first cylindrical member. It has slide means for sliding the slide plate. The slide means A bolt having one end rotatably attached to the first cylindrical member. Moving means directly or indirectly attached to the slide plate, screwed to the bolt, and moving horizontally by the rotation of the bolt. It includes an actuator for rotating the bolt. When the third opening is aligned with the second hollow by the sliding of the slide plate, the cementitious material in the second hollow and the first hollow is filled below the steel plate through the first opening.

[0021] According to this aspect, a replaceable cylindrical or square cylindrical second cylindrical member is provided below the cylindrical or square cylindrical first cylindrical member for adjusting the falling height of the cementitious material. By replacing only the second cylindrical member having the dimensions and shape corresponding to the dimensions and shape of the first opening, it becomes possible to install the filling device for steel plates having first openings of various shapes and dimensions.

[0022] Another aspect of the filling device according to the present invention is The aforementioned moving means is characterized by being either a nut or a ball screw.

[0023] According to this embodiment, since the moving mechanism that screws onto the bolt and moves laterally due to the rotation of the bolt is either a nut or a ball screw, the slide plate on which the weight of the cement-based material is loaded can be smoothly slid using a simple component such as a nut, which leads to a reduction in the manufacturing cost of the device.

[0024] Furthermore, other embodiments of the filling apparatus according to the present invention include: The structure further comprises a frame comprising multiple support columns and horizontal members connecting the multiple support columns, which is arranged around the hopper to support the hopper. The support column is characterized in that it rotatably supports the other end or vicinity of the end of the bolt.

[0025] According to this embodiment, the other end of the bolt, or near the end, is rotatably supported by a support column of a frame arranged around the hopper to support the hopper, thereby allowing both ends of the bolt that moves the moving means to be stably supported by the hopper, the cylindrical member, and the support column of the frame.

[0026] Furthermore, other embodiments of the filling apparatus according to the present invention include: The slide plate is slidably inserted between upper and lower clamping plates, each having a third' opening corresponding to the third opening, thereby forming a slide plate unit with the slide plate and the upper and lower clamping plates.

[0027] According to this embodiment, since the slide plate having a third opening is sandwiched between a pair of clamping plates having a third' opening, the slide plate can be slid without generating friction between the slide plate and the hopper or cylindrical member, thereby preventing damage to the hopper or cylindrical member due to the sliding of the slide plate.

[0028] Furthermore, other embodiments of the filling apparatus according to the present invention include: The clearance between the slide plate and the side opening is set to be greater than the amount of deflection of the slide plate due to the maximum set weight of the cement-based material supported by the slide plate.

[0029] According to this embodiment, in a configuration in which a slide plate is inserted through a side opening of a hopper or cylindrical member, the clearance between the slide plate and the side opening is set to be greater than the amount of deflection of the slide plate due to the maximum set weight of the supporting cement-based material. This allows the slide plate to slide smoothly while suppressing or inhibiting sliding (generation of dynamic friction) between the deflected slide plate and the side opening.

[0030] Furthermore, other embodiments of the filling apparatus according to the present invention include: The clearance between the slide plate and the clamping plate is set to be greater than the amount of deflection of the slide plate due to the maximum set weight of the cement-based material supported by the slide plate.

[0031] According to this embodiment, in a configuration in which a slide plate is clamped by a pair of clamping plates, the clearance between the slide plate and the clamping plates is set to be greater than the amount of deflection of the slide plate due to the maximum set weight of the supporting cement-based material. This allows the slide plate to slide smoothly while suppressing or inhibiting sliding (generation of dynamic friction) between the deflected slide plate and the clamping plates.

[0032] Furthermore, in another embodiment of the filling apparatus according to the present invention, The aforementioned slide plate has a first vertical piece at one end and a second vertical piece at the other end. The moving means is attached to the first vertical piece. The second vertical piece is characterized by functioning as a stopper that restricts the sliding of the slide plate toward the actuator.

[0033] According to this embodiment, the slide plate is provided with a first vertical piece and a second vertical piece at both ends, a moving means is attached to the first vertical piece, and the second vertical piece functions as a stopper that restricts the slide plate from sliding toward the actuator, thereby preventing the slide plate from falling out of the pair of side openings and the pair of clamping plates.

[0034] Furthermore, other embodiments of the filling apparatus according to the present invention include: The bolt is characterized in that it is a Zessner bolt.

[0035] According to this embodiment, by applying a Zesner bolt, which has a wider thread pitch than a general bolt, the sliding speed of the slide plate can be increased, and the rotation of the bolt can be guaranteed even if a small amount of cement-based material adheres to the slide plate.

[0036] Furthermore, other embodiments of the filling apparatus according to the present invention include: The actuator is characterized by being the motor of an impact driver.

[0037] According to this embodiment, since the actuator is the motor of an impact driver, a predetermined torque value can be easily obtained with a general power tool, and the moving means attached to the slide plate on which the weight of cement-based material is loaded by a rotating bolt can be moved smoothly. [Effects of the Invention]

[0038] As can be understood from the above explanation, the filling device of the present invention relates to a filling device in which a sliding plate can be opened and closed in the hollow of a hopper containing cement-based material, and the sliding plate can be slid smoothly regardless of the weight of the cement-based material loaded onto the sliding plate. [Brief explanation of the drawing]

[0039] [Figure 1] This is a perspective view of an example of a filling apparatus according to this embodiment. [Figure 2]This is the diagram indicated by arrow II-II in Figure 1, which is a longitudinal cross-sectional view of the filling device. [Figure 3] This is a schematic diagram illustrating the amount of deflection of the slide plate due to the maximum weight of the cement-based material, and the clearance between the slide plate and the clamping plate. [Figure 4] This is a longitudinal cross-sectional view showing the state in which the sliding plate is sliding and the cement-based material in the hopper is filling the area below the steel plate. [Figure 5] This is a perspective view of an example of a lower component constituting a seismic isolation bearing manufactured using a filling device. [Modes for carrying out the invention]

[0040] Hereinafter, an example of a filling apparatus according to the embodiment will be described with reference to the attached drawings. In this specification and drawings, substantially identical components may be denoted by the same reference numerals to avoid redundant explanations.

[0041] [Filling apparatus according to the embodiment] An example of a filling apparatus according to the embodiment will be described with reference to Figures 1 to 5. Here, Figure 1 is a perspective view of an example of a filling apparatus according to the embodiment, and Figure 2 is the line indicated by arrow II-II in Figure 1, which is a longitudinal cross-sectional view of the filling apparatus. Figure 3 is a schematic diagram illustrating the amount of deflection of the slide plate due to the set maximum weight of the cement-based material and the clearance between the slide plate and the clamping plate, and Figure 4 is a longitudinal cross-sectional view showing the state in which the slide plate slides and the cement-based material in the hopper is filled below the steel plate. Furthermore, Figure 5 is a perspective view of an example of a lower device constituting a seismic isolation support manufactured by the filling apparatus.

[0042] Furthermore, in Figures 2 and 4, the cement-based material C contained inside the first hollow 12 of the hopper 10 and the second hollow 22 of the first cylindrical member 20 is omitted from the illustration in order to make the device configuration easier to understand. In addition, the various reinforcing bars arranged inside the formwork K are also omitted from the illustration in Figures 2 and 4.

[0043] The filling device 100 includes a truncated pyramidal hopper 10, a rectangular tubular first cylindrical member 20 connected to the lower end of the hopper 10, a cylindrical second cylindrical member 30 connected to the lower end of the first cylindrical member 20, a slide plate unit 40A provided at an intermediate position on the first cylindrical member 20 and equipped with a slide plate 40, a sliding means 50 for sliding the slide plate 40, and a frame 60 for supporting the hopper 10.

[0044] The filling device 100 is a device that can be suitably used at construction sites where a truck mixer cannot access the cement-based material placement site, or at construction sites where the distance from the truck mixer's access point to the placement site is greater than or equal to the pumping distance required to pump the cement-based material.

[0045] The hopper 10 is formed by welding together four trapezoidal-shaped steel plates, has a first hollow 12 inside, and a second opening 15 at its lower end.

[0046] The upper end of the hopper 10 is welded to a steel plate which is the uppermost horizontal member 63 that makes up the frame 60, and is integrated with the frame 60. Eye bolts 64 are attached to the four corners of the uppermost horizontal member 63, which is rectangular in shape when viewed from above, and a wire (not shown) is attached to each eye bolt 64 so that the entire filling device 100 can be moved using heavy machinery such as a crane (not shown).

[0047] Here, the hopper 10 in the illustrated example may be a truncated pyramid, and may be a truncated square pyramid, truncated pentagonal pyramid, or truncated cone, in addition to the truncated square pyramid shown in the illustrated example. Furthermore, the hopper 10 may have reinforcing ribs (not shown) along the longitudinal direction of the hopper 10 at its four corners or, for example, at the center of its four sides.

[0048] The first cylindrical member 20 is a cylindrical member having a shape complementary to the outer shape of the lowest end of the hopper 10 (square in the illustrated example), and is formed by welding a square steel pipe or four steel plates, has a second hollow 22 inside, and has a fourth opening 25 at its lower end.

[0049] In the illustrated example, a slide plate unit 40A is interposed at an intermediate position of the first cylindrical member 20, and the upper and lower clamping plates 45 constituting the slide plate unit 40A are joined to the first cylindrical member 20 by welding, thereby integrating the first cylindrical member 20 and the slide plate unit 40A.

[0050] The first cylindrical member 20 is a member that adjusts the drop height of the cement-based material. By setting the length (height) of the first cylindrical member 20 to be longer, the potential energy of the cement-based material can be increased. For example, it becomes possible to sufficiently distribute the cement-based material to the formwork K for manufacturing the cement-based material without adding an additive that imparts high fluidity to the cement-based material.

[0051] The second cylindrical member 30 is manufactured by welding a steel plate 32, which has a top opening 33 with a shape complementary to the outer shape of the lowest end of the first cylindrical member 20, to the upper end of a cylindrical steel plate 31, and has a third hollow 34 inside and a fifth opening 35 at its lower end.

[0052] The second cylindrical member 30 has a circular shape in plan view and has a shape and dimensions that are complementary to the first opening Pa located in the center of the steel plate P which is embedded in the top surface of the manufactured cement-based member B (see Figure 5).

[0053] An example of a material to be manufactured for the filling device 100 is a cement-based component in which a steel plate P is embedded at the top. More specifically, as shown in Figure 5, it is a lower device M that constitutes a seismic isolation support, in which a steel plate P, which is a base plate, is embedded at the top.

[0054] When fabricating (constructing) a disc-shaped lower device M on a construction surface F, such as leveled ground or above cast-in-place piles or precast piles (not shown) constructed within the ground, U-shaped reinforcing bars T1 are arranged radially, and each reinforcing bar T1 is integrated with a ring-shaped hoop reinforcing bar T2. Then, a cylindrical formwork K is assembled at a position radially away from the circular reinforcing arrangement in plan view, at a predetermined cover thickness. In addition, measures such as arranging reinforcing annular flanges (not shown) around the formwork K may be taken to prevent deformation or assembly defects due to the filling pressure of the cement-based material filled inside the formwork K.

[0055] A disc-shaped steel plate P is placed above the reinforcing bars T1 and T2, which are arranged in a disc shape within the formwork K. The steel plate P is supported from below by a steel plate support frame (not shown) supported on the construction surface F, and is positioned above the center of the formwork K with a predetermined vertical gap between it and the reinforcing bars T1 and T2. Eye bolts (not shown) are attached to the top surface of the steel plate P, and hooks at the ends of wires suspended from heavy machinery (not shown) are attached to each eye bolt, and the steel plate P is installed by being lowered by the heavy machinery.

[0056] The lowest horizontal member 67 of the frame 60 supporting the hopper 10 is placed on the upper surface of the steel plate P and, if necessary, is positioned in a manner that prevents displacement using positioning bolts (not shown) protruding from various points on the upper surface of the steel plate P. When the steel plate P is placed in the center position inside the formwork K, as shown in Figures 1 and 2, an annular gap D is formed between the steel plate P and the formwork K in plan view. This gap D allows confirmation that the formwork K is sufficiently filled with cement-based material via the hopper 10, and if necessary, a vibrator (not shown) can be inserted through this gap D to promote the flow of the cement-based material.

[0057] The lower end of the second cylindrical member 30 is fitted snugly into the first opening Pa in the center of the steel plate P, thereby enabling the third hollow 34 to communicate with the space below the steel plate P.

[0058] Thus, the second cylindrical member 30 is a member having an outer shape and dimensions corresponding to the first opening Pa of the steel plate P, and is a member that is attached to the lower end of the first cylindrical member 20 according to the outer shape and dimensions of the first opening Pa. In other words, the second cylindrical member 30 is a component of the filling device 100 that can be freely replaced, and the second cylindrical member 30 corresponding to the outer shape and dimensions of the first opening Pa is attached each time.

[0059] By attaching the second cylindrical member 30 to the first opening Pa without any gaps, the cement-based material filled from the hopper 10 can be prevented from leaking upward through any gaps, while the cement-based material can be effectively flowed downward and to the lower side of the steel plate P.

[0060] The slide plate unit 40A, which is interposed at an intermediate position in the first cylindrical member 20, has a slide plate 40 and a pair of clamping plates 45 that clamp the slide plate 40 from above and below.

[0061] The slide plate 40 is formed from a rectangular steel plate 41 in plan view, and a third opening 42 is provided in the steel plate 41. A first vertical piece 43 and a second vertical piece 44 are provided in an upright position at one and the other opposing ends of the steel plate 41, respectively.

[0062] The first vertical piece 43 is provided with a through hole 43a, and a nut 55 (an example of a moving means), which is a component of the sliding means 50, is attached to the first vertical piece 43 so as to communicate with the through hole 43a.

[0063] As shown in Figures 1 and 2, the slide plate 40 slides in the horizontal direction (an example of the transverse direction) X6 direction by cutting the first cylindrical member 20 horizontally, but the second vertical piece 44 functions as a stopper to restrict excessive sliding of the slide plate 40 toward the actuator side (the side of the rotating nut 57 that rotates at the actuator 59).

[0064] The clamping plate 45 is provided with a third' opening 46. When the slide plate 40 slides and the third opening 42 and the upper and lower third' openings 46 are not aligned (they are misaligned), the weight of the cement-based material stored from the first cylindrical member 20 to an intermediate position in the hopper 10 is loaded onto the slide plate 40, and the cement-based material is not filled into the space below the steel plate P. On the other hand, when the slide plate 40 slides and the third opening 42 and the upper and lower third' openings 46 are aligned, the cement-based material stored from the first cylindrical member 20 to an intermediate position in the hopper 10 is filled into the space below the steel plate P via the third opening 42 and the upper and lower third' openings 46, and further via the lower third hollow 34, and through the fifth opening 35.

[0065] Here, as shown in Figure 3, when the cement-based material C is filled to a predetermined height inside the hopper 10, the weight of the cement-based material C causes the slide plate 40 to bend downward. When the bent slide plate 40 comes into contact with both the upper and lower clamping plates 45, friction is generated between the slide plate 40 and the upper and lower clamping plates 45 as the slide plate 40 slides, making it impossible to guarantee the smooth sliding of the slide plate 40.

[0066] Therefore, a clearance G of length t is provided between the upper clamping plate 45 and the slide plate 40, the maximum set weight W of the cement-based material C supported by the slide plate 40 is determined, and the length t of the clearance G is set to be greater than the amount of deflection δ of the slide plate 40 due to this maximum set weight W.

[0067] Here, a considerable amount of frictional force may be generated between the slide plate 40 and the clamping plate 45 when the slide plate 40 slides. Therefore, it is preferable to take measures to reduce this frictional force.

[0068] Examples of measures to reduce friction include forming both the slide plate 40 and the clamping plate 45 from stainless steel plates, making the contact surfaces of both the slide plate 40 and the clamping plate 45 mirror-polished surfaces, forming both the slide plate 40 and the clamping plate 45 from stainless steel plates and making the contact surfaces of both mirror-polished surfaces, and interposing a linear guide between the slide plate 40 and the clamping plate 45.

[0069] The sliding mechanism 50 includes a bolt 51, a nut 55 that is screwed onto the bolt 51 and moves in the lateral (horizontal) direction X5 as the bolt 51 rotates in the X2 direction, and an actuator 59 that rotates the bolt 51. Here, the moving mechanism may be a ball screw or the like, in addition to the nut 55 shown in the illustrated example.

[0070] A support cylinder 23 is attached to the side of the first cylindrical member 20. Meanwhile, of the multiple support columns 61 that make up the frame 60, a through hole 62 is provided in one of the support columns 61 that is located opposite the support cylinder 23.

[0071] One end of the bolt 51 is loosely fitted to the support cylinder 23 so as to be rotatable, and the other end of the bolt 51 passes through the through hole 62, to which a rotating nut 57 is attached.

[0072] An impact driver 58, which has a built-in motor 59 (an example of an actuator), has a tip groove (not shown) fitted into a rotating nut 57. By driving the motor 59 to rotate the rotating nut 57 in the X1 direction, the bolt 51 rotates around its axis in the X2 direction, and the nut 55 that screws onto the bolt 51 moves horizontally in the X5 direction in response to the rotation of the bolt 51. As the nut 55 moves, the slide plate 40 to which the nut 55 is attached moves horizontally in the X6 direction.

[0073] Here, a Zesner bolt is preferably used for the bolt 51. By using a Zesner bolt, which has a wider thread pitch than a general bolt, the sliding speed of the slide plate 40 can be increased, and the rotation of the bolt 51 can be guaranteed even if a small amount of cement-based material adheres to the slide plate 40.

[0074] As shown in Figure 4, by rotating the rotary nut 57 with the impact driver 58 (see Figure 1), rotating the bolt 51 to slide the nut 55 in the X5' direction, and sliding the slide plate 40 in the X6' direction, the first hollow 12 of the hopper 10, the second hollow 22 of the first cylindrical member 20, the third opening 42 of the slide plate 40, the third' opening 46 of the clamping plate 45, and the third hollow 34 become interconnected. As a result, the cement-based material contained in the hopper 10 and the first cylindrical member 20 above the slide plate unit 40A flows downward in the Y1 direction and fills the space below the steel plate P in the Y2 direction through the first opening Pa of the steel plate P.

[0075] As the cement-based material filled inside the formwork K hardens, the filling device 100 is removed, and the formwork K is demolded, a lower unit M constituting a seismic isolation device (elastic sliding bearing) is fabricated, as shown in Figure 5, in which a base plate P made of steel plate is embedded on the top surface of a concrete base B. More specifically, the lower unit M is formed by fixing a rubber bearing R, for example, with a circular sliding material Q fitted onto its upper surface, onto the base plate P. The filling device 100 can be applied not only to the lower unit M of the elastic sliding seismic isolation device shown in the example, but also to the fabrication of other components of laminated rubber seismic isolation devices and various other cement-based components.

[0076] According to the illustrated filling device 100, cement-based material can be sufficiently filled into the formwork K even when there is no pumping force from the truck mixer, and a cement-based member B with a steel plate P on top can be manufactured with good manufacturability.

[0077] Furthermore, the sliding mechanism 50 can smoothly slide the sliding plate 40 regardless of the weight of the cement-based material C loaded onto the sliding plate 40.

[0078] Furthermore, other embodiments may be used in which other components are combined with the configurations listed in the above embodiments, and the present invention is not limited in any way to the configurations shown herein. In this regard, modifications can be made without departing from the spirit of the present invention, and can be appropriately determined according to the application form.

[0079] For example, the filling device 100 in the illustrated example includes a first cylindrical member 20 and a second cylindrical member 30, but a filling device without the first cylindrical member 20 and the second cylindrical member 30 may also be used. In this configuration, a pair of side openings (not shown) are provided at intermediate positions on the wall surface of the hopper 10, and a slide plate 40 is slidably mounted laterally relative to the pair of side openings. In addition, the second opening 15 of the hopper 10 is attached to the first opening Pa of the steel plate P without any gaps.

[0080] Furthermore, another example of a filling device may include a hopper 10 and a first cylindrical member 20, but without a second cylindrical member 30. In this configuration, the fourth opening 25 of the first cylindrical member 20 is fitted to the first opening Pa of the steel plate P without any gaps.

[0081] Furthermore, although the illustrated example shows the slide plate unit 40A positioned midway along the first cylindrical member 20, a pair of side openings (not shown) may be provided midway along the wall surface of the first cylindrical member 20, and the slide plate 40 may be arranged to slide laterally relative to the pair of side openings. [Explanation of Symbols]

[0082] 10: Hopper 12: 1st hollow 15: Second opening 20: First cylindrical member 22: 2nd hollow 23: Support tube 25: Fourth opening 30: Second cylindrical member 31: Cylindrical steel plate 32: Steel plate 33: Top opening 34: 3rd hollow 35: Fifth opening 40: Sliding plate 40A: Slide plate unit 41: Steel plate 42: Third opening 43: First vertical section 43a: Through hole 44: Second vertical section 45: Clamping plate 46: Third opening 50: Sliding mechanism 51: Bolt 55: Means of transport (nut) 57: Rotating nut 58: Impact Driver 59: Motor (actuator) 60: Stand 61: Strut 62: Through hole 63, 65, 67: Horizontal structural members 64: Eyebolt 100: Filling device P: Steel plate (base plate) Pa: 1st opening C: Cement-based materials K: Formwork T1: U-shaped reinforcing bar (rebar) T2: Hoop reinforcement (rebar) F: Construction side D: Gap G: Clearance B: Cement-based material (base) R: Rubber bearing Q: Sliding material M: Lower component of the seismic isolation bearing (lower component)

Claims

1. A filling apparatus for manufacturing a cement-based member having a steel plate with a first opening for filling with cement-based material at its top surface, A truncated cone or truncated pyramidal hopper is provided, which is arranged such that its cross-section becomes smaller from top to bottom, has a hollow interior, and has a second opening at its lower end that communicates with the hollow and communicates with the first opening without any gaps, A sliding plate, which has a third opening and is slidably disposed laterally via a side opening located midway along the wall surface of the hopper, It has a sliding means for sliding the aforementioned slide plate, The aforementioned sliding means is A bolt, with one end rotatably attached to the hopper, A moving means that is directly or indirectly attached to the slide plate, screwed onto the bolt, and moves laterally by the rotation of the bolt, The system includes an actuator for rotating the bolt, A filling device characterized in that, when the sliding plate moves, the third opening is aligned with the hollow, and the cement-based material in the hollow is filled below the steel plate through the first opening.

2. A filling apparatus for manufacturing a cement-based member having a steel plate with a first opening for filling with cement-based material at its top surface, A truncated cone or truncated pyramidal hopper is provided, which is arranged so that its cross-section becomes smaller from top to bottom, has a first hollow inside, and has a second opening at its lower end that communicates with the first hollow, A cylindrical or rectangular cylindrical member is connected to the lower end of the hopper, has a second hollow, and is provided with a fourth opening at its lower end that communicates with the second hollow and is connected to the first opening without any gaps, thereby adjusting the drop height of the cement-based material. A sliding plate, having a third opening, is disposed to slide laterally via a side opening located midway along the wall surface of the cylindrical member, It has a sliding means for sliding the aforementioned slide plate, The aforementioned sliding means is A bolt, with one end rotatably attached to the cylindrical member, A moving means that is directly or indirectly attached to the slide plate, screwed onto the bolt, and moves laterally by the rotation of the bolt, The system includes an actuator for rotating the bolt, A filling device characterized in that, when the sliding plate is slid, the third opening is aligned with the second hollow, and the cement-based material in the second hollow and the first hollow is filled below the steel plate through the first opening.

3. A filling apparatus for manufacturing a cement-based member having a steel plate with a first opening for filling with cement-based material at its top surface, A truncated cone or truncated pyramidal hopper is provided, which is arranged so that its cross-section becomes smaller from top to bottom, has a first hollow inside, and has a second opening at its lower end that communicates with the first hollow, A cylindrical or rectangular first cylindrical member is connected to the lower end of the hopper, has a second hollow, and is provided with a fourth opening at its lower end to adjust the drop height of the cement-based material. A second cylindrical or rectangular cylindrical member is connected to the lower end of the first cylindrical member, has a third hollow, and is provided with a fifth opening at its lower end that communicates with the third hollow and communicates with the first opening without any gaps, and is replaceable. A sliding plate, having a third opening, is disposed to slide laterally via a side opening located midway along the wall surface of the first cylindrical member, It has a sliding means for sliding the aforementioned slide plate, The aforementioned sliding means is A bolt, with one end rotatably attached to the first cylindrical member, A moving means that is directly or indirectly attached to the slide plate, screwed onto the bolt, and moves laterally by the rotation of the bolt, The system includes an actuator for rotating the bolt, A filling device characterized in that, when the sliding plate is slid, the third opening is aligned with the second hollow, and the cement-based material in the second hollow and the first hollow is filled below the steel plate through the first opening.

4. The filling device according to any one of claims 1 to 3, characterized in that the moving means is either a nut or a ball screw.

5. The structure further comprises a frame comprising multiple support columns and horizontal members connecting the multiple support columns, which is arranged around the hopper to support the hopper. The filling device according to any one of claims 1 to 3, characterized in that the support column rotatably supports the other end or vicinity of the end of the bolt.

6. A filling apparatus according to any one of claims 1 to 3, characterized in that the slide plate is slidably inserted between upper and lower clamping plates having a third' opening corresponding to the third opening, thereby forming a slide plate unit with the slide plate and the upper and lower clamping plates.

7. The filling apparatus according to any one of claims 1 to 3, characterized in that the clearance between the slide plate and the side opening is set to be greater than the amount of deflection of the slide plate due to the set maximum weight of the cement-based material supported by the slide plate.

8. The filling apparatus according to claim 6, characterized in that the clearance between the slide plate and the clamping plate is set to be greater than the amount of deflection of the slide plate due to the set maximum weight of the cement-based material supported by the slide plate.

9. The aforementioned slide plate has a first vertical piece at one end and a second vertical piece at the other end. The moving means is attached to the first vertical piece. The filling apparatus according to any one of claims 1 to 3, characterized in that the second vertical piece functions as a stopper that restricts the sliding of the slide plate toward the actuator.

10. The filling apparatus according to any one of claims 1 to 3, characterized in that the bolt is a Zessner bolt.

11. The filling apparatus according to any one of claims 1 to 3, characterized in that the actuator is the motor of an impact driver.

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