Auxiliary tools for concrete pouring
The concrete pouring aid addresses the challenge of hose holding and overflow prevention by using a ratchet mechanism to securely clamp the hose tip, enhancing operational efficiency and ease of use.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- SEKISUI HOUSE KK
- Filing Date
- 2022-12-09
- Publication Date
- 2026-07-22
AI Technical Summary
Existing concrete pouring methods require significant physical effort to hold the pumping hose and prevent concrete overflow, and existing auxiliary devices either fail to reduce this burden or complicate the connection and cleaning process.
A concrete pouring aid with a hose holding part, formwork insertion part, and a handle equipped with a ratchet mechanism that securely clamps the hose tip, reducing the need for manual holding and simplifying installation and cleaning.
The device allows for secure hose holding with minimal effort, enabling smooth concrete pouring and easy cleaning, thereby improving workability and reducing the physical burden on operators.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention disclosed in the present application relates to an auxiliary tool for concrete placement used to hold the tip of a pumping hose connected to a pump truck at the upper part of a formwork and pour fresh concrete into the formwork.
Background Art
[0002] When pouring fresh concrete (hereinafter referred to as "concrete") discharged from a pumping hose connected to a pump truck into a formwork, pressure is applied to the pumping hose to extrude the concrete, and a pulsation phenomenon occurs in which the tip of the pumping hose shakes strongly up, down, left, and right. If the concrete that has overflowed from the formwork adheres to the outside of the formwork or the like, the cleaning effort increases. Therefore, an operator needs to press down on the pumping hose with a strong force so that the concrete does not overflow from the formwork. Conventionally, this has been a physically heavy burden.
[0003] In addition, if the concrete discharged from the pumping hose hits the surface of the formwork violently, there is a risk that the release agent applied to the surface of the formwork will peel off. To prevent this, it is often done to apply a backing plate such as a plywood to the opening of the formwork and pour the concrete along the backing plate. However, even in that case, it is necessary for another operator to continuously hold the backing plate pressed against the opening of the formwork firmly.
[0004] To streamline such work, Patent Document 1 proposes a technical idea of attaching a funnel-shaped placement auxiliary tool to the opening of a formwork and pouring concrete through the placement auxiliary tool. In addition, Patent Document 2 discloses a technical idea of connecting the tip of a pumping hose to a similar auxiliary tool.
Prior Art Documents
Patent Documents
[0005]
Patent Document 1
[0006] The auxiliary device disclosed in Patent Document 1 can reduce the labor involved in pressing a backing plate against the formwork, but it does not reduce the burden of holding the concrete pumping hose. Furthermore, the auxiliary device disclosed in Patent Document 2 employs a skirt-shaped covering made of a flexible material at the point where the tip of the concrete pumping hose and the funnel-shaped main body are connected, but the connection point has an intricate cross-sectional shape with irregularities, making the connection work time-consuming, and it is also difficult to clean the concrete that adheres to the area around the connection point after the concrete pouring work.
[0007] The invention disclosed in this application has been made in view of the circumstances described above, and provides a concrete pouring aid that allows the tip of the pumping hose to be firmly held with simple operation, enables smooth pouring of concrete, and is easy to clean after the pouring work, thus offering excellent handling. [Means for solving the problem]
[0008] To achieve the aforementioned objective, the concrete pouring aid of the present invention disclosed is a concrete pouring aid installed in the upper opening of a formwork surrounded by formwork panels arranged at predetermined intervals, and for supplying concrete discharged from a pumping hose into the formwork, comprising: a hollow hose holding part having an input port communicating in the vertical direction; a formwork insertion part connected below the hose holding part and inserted into the formwork; a fastening part extending outward from the hose holding part and spanning across the upper opening of the formwork; and a holding part attached to the hose holding part. The device is equipped with a handle and a hose holder, the handle being gate-shaped and straddling the opening of the hose holder, both of its legs being pivotally attached to the hose holder so as to be rotatable in the front-rear direction, and a locking mechanism is provided at the pivoting points of the legs to restrict the rotation of the handle, the tip of the pressurized hose is inserted into the opening of the hose holder, and with the handle tilted forward, the tip of the pressurized hose is clamped between the gripping part that connects the legs of the handle laterally and the hose holder, and is restrained by the locking mechanism.
[0009] In the above-described configuration, the locking mechanism can be a ratchet mechanism provided at the pivot points of both legs of the handle.
[0010] The ratchet mechanism may be covered by a removable concrete adhesion prevention cover.
[0011] Furthermore, the fastening portion may be provided with a hook portion that can be fastened to the upper edge of the formwork panel.
[0012] Furthermore, a hose sway stopper may be provided on the inside of the corner where the two legs of the handle and the gripping portion connect, and which can contact multiple points on the outer surface of the tip of the pressure hose.
[0013] Furthermore, the hose holding portion may be configured to have left and right side walls surrounding the input port, a front wall, and a rear wall, with the rear wall extending above the front wall, and the formwork insertion portion may be configured to have a funnel-shaped portion that is detachably connected to the input port of the hose holding portion, and a cylindrical portion that communicates with the funnel-shaped portion and extends downward along the rear wall of the hose holding portion.
[0014] Furthermore, it is even more preferable that the hose holding portion and the formwork insertion portion be detachably connected. [Effects of the Invention]
[0015] Using the concrete pouring aid configured as described above, the tip of the pumping hose can be securely held in the upper opening of the formwork with simple operation, allowing concrete to be smoothly poured into the formwork. Because of its simple overall shape and structure, installation, removal, movement, and cleaning after pouring are also easy, greatly improving the workability of concrete pouring work. [Brief explanation of the drawing]
[0016] [Figure 1] This is a schematic side view showing a concrete pouring aid, according to one embodiment of the invention disclosed in this application, installed on a formwork, as viewed from the left side of the concrete pouring aid. [Figure 2] This is a schematic front view of the aforementioned concrete pouring aid. [Figure 3] This is a schematic top view of the aforementioned concrete pouring aid. [Figure 4] This is an explanatory diagram showing how the tip of the pressure hose is restrained by the hose holding part of the concrete pouring auxiliary device. [Modes for carrying out the invention]
[0017] Hereinafter, embodiments of the invention disclosed in the present application will be described with reference to the drawings. When explaining the relative positional relationship and the direction of movement of parts and members below, in a state where an auxiliary tool for concrete placement is installed on a foundation beam or a formwork of a wall body extending in a specific direction, among the directions intersecting the extending direction of the formwork, the side where the operator stands holding the pumping hose is defined as the front of the auxiliary tool for concrete placement, and based on this, the front-rear direction (depth direction: the direction intersecting the extending direction of the formwork) and the left-right direction (width direction: the extending direction of the formwork) of the auxiliary tool for concrete placement are specified.
[0018] Figures 1 to 3 show an auxiliary tool for concrete placement according to an embodiment of the invention disclosed in the present application. The auxiliary tool 1 for concrete placement is installed at the upper opening of the formwork 2 surrounded by formwork panels opposed at a predetermined interval. The exemplary formwork 2 is for molding a continuous footing foundation (fabric foundation) 9, and is configured by building a flat steel panel 22 for molding the rising portion 92 on top of a buried-back resin panel 21 curved in a substantially arc-shaped cross-section for molding the footing portion 91 serving as the base. Connecting ribs 23 are formed around the back surface of the steel panel 22. Note that the auxiliary tool 1 for concrete placement according to the invention disclosed in the present application is also applicable to formworks of parts other than the foundation, and the material, shape, structure of the formwork support, etc. of the formwork panel are not particularly limited.
[0019] The auxiliary tool 1 for concrete placement is formed by processing a steel plate or a stainless steel plate, and includes a hollow hose holding portion 3 having an inlet communicating in the vertical direction, a formwork insertion portion 4 connected below the hose holding portion and inserted into the formwork 2, a latching portion 5 projecting outward from the hose holding portion 3 and spanning over the upper opening of the formwork 2, and a handle 6 attached to the hose holding portion 3.
[0020] The hose holding portion 3 has left and right side walls 31 facing each other at a substantially constant interval surrounding an inlet opening rectangular in plan view, a front wall 32 and a rear wall 33 facing each other at a substantially constant interval, and the rear wall 33 extends upward beyond the front wall 32. The heights of the lower edges of both side walls 31, the front wall 32 and the rear wall 33 are aligned horizontally, and the upper edges of both side walls 31 are inclined along a line connecting the upper edge of the front wall 32 and the upper edge of the rear wall 33.
[0021] The formwork insertion portion 4 includes a funnel-shaped portion 41 detachably connected to the inlet opening of the hose holding portion, and a cylindrical portion 42 communicating with the funnel-shaped portion 41. The bottom surface of the funnel-shaped portion 41 is inclined downward toward the rear, and is connected to the cylindrical portion 42 extending downward along the rear wall 33 of the hose holding portion with the same width. The cylindrical portion 42 has a horizontally long rectangular cross section, and its short side dimension is set to a dimension that can be inserted into the gap between the steel panel 22 on one side and the foundation reinforcing bar 25. Also, in the exemplary embodiment, the length is set so that the lower end of the cylindrical portion 42 reaches slightly above the boundary between the footing portion 91 and the rising portion 92 of the foundation in the installed state.
[0022] The latching portions 5 project forward and backward at the same height from the front wall 32 and the rear wall 33 of the hose holding portion 3, respectively. The total projecting dimensions in the front and rear are set to be larger than the opposing interval of the steel panels 22. When the front and rear latching portions 5 are bridged over the steel panels 22, the hose holding portion 3 is held directly above the upper opening of the formwork 2. The latching portion 5 projecting from the rear wall 33 is formed flat, and the latching portion 5 projecting from the front wall 32 is provided with a hook portion 51 substantially U-shaped in side view, and this hook portion 51 is latched to the upper edge portion (rib 23) of the steel panel 22. Considering the engagement allowance of the hook portion 51 with the rib 23, the projecting dimensions of the latching portions 5 on the opposite side and the short side dimension of the cylindrical portion 42 are also set.
[0023] The handle 6 has a pair of left and right legs 61 and a gripping portion 62 that connects the upper parts of both legs 61 in the width direction, forming a gate shape that straddles the opening of the hose holding portion 3. The lower ends of both legs 61 are pivotally attached to the outside of the side walls 31 of the hose holding portion 3 via appropriate shaft members 63, thereby holding the handle 6 so that it can rotate in the front-rear direction.
[0024] A locking mechanism is provided at the pivot point of at least one of the legs 61 to restrict the rotation of the handle 6. The locking mechanism in the exemplary embodiment employs a ratchet mechanism comprising a ratchet wheel 71 coupled to the leg 61 and inserted into the shaft member 63, which rotates integrally with the leg 61; a stopper 73 that is pivotably attached to the outside of the side wall 31 via an appropriate pin member 72, and whose tip engages with and disengages from the ratchet wheel 71; and an elastic member 74 such as a coil spring that biases the stopper 73 in a direction that locks it with the ratchet wheel 71. The tip of the stopper 73 is constantly locked with the ratchet wheel 71 by the biasing force of the elastic member 74, so that the handle 6 can rotate forward but not backward. A release lever 75 is provided on the stopper 73. By operating this release lever 75, the stopper 73 is rotated in a direction that resists the biasing force of the elastic member 74, causing the stopper 73 to detach from the ratchet wheel 71, allowing the handle 6 to be rotated backward. This ratchet mechanism is covered by a removable cover 76 attached to the side wall 31 of the hose holding section 3 to prevent adhesion during concrete pouring and to allow for cleaning if adhesion occurs.
[0025] Figure 4 shows the configuration of holding the concrete pouring hose 8 using the concrete pouring aid 1 configured as described above. After installing the concrete pouring aid 1 in the upper opening of the formwork 2 at the predetermined pouring location, as shown in Figure (a), the release lever 75 protruding from the stopper 73 is operated to detach the stopper 73 from the ratchet wheel 71, and the handle 6 is rotated to above or behind the hose holding part 3. Then, the tip of the concrete pouring hose 8 is inserted into the input port of the hose holding part 3 from the front and diagonally above.
[0026] Next, as shown in Figure (b), while holding the tip of the pressure hose 8 in contact with the rear wall 33 and front wall 32 of the hose holder 3, the handle 6 is rotated towards the user and pressed against the upper surface of the pressure hose 8. This causes the tip of the pressure hose 8 to be clamped between the gripping portion 62 of the handle 6 and the front wall 32 of the hose holder 3. In this state, the stopper 73 remains engaged with the ratchet wheel 71, restricting the vertical movement of the pressure hose 8.
[0027] Furthermore, in the example configuration, hose sway-preventing parts 64 (Figures 2 and 3) with slanted edges are provided on the inside of the corners where the legs 61 and gripping parts 62 of the handle 6 connect. When the handle 6 is tilted forward and pressed against the pressure hose 8, the hose sway-preventing parts 64 contact the outer surface of the tip of the pressure hose 8 from two points on the left and right, thereby reducing lateral movement of the pressure hose 8.
[0028] By temporarily fixing the tip of the pressure hose 8 to the concrete pouring aid 1 in this way, pulsation of the pressure hose 8 during concrete pouring is suppressed. Although the pressure when concrete is discharged from the pressure hose 8 may cause the concrete pouring aid 1 itself to lift, this lifting can be suppressed and the installation of the concrete pouring aid 1 can be stabilized by hooking the hook portion 51 formed on the latch portion 5 to the rib 23 formed on the upper edge of the steel panel 22. The hook portion 51 may also be provided on the latch portion 5 that protrudes toward the rear wall 33, and may be movable or detachable.
[0029] Once the concrete pouring work at the designated pouring location is completed, operate the release lever 75 of the stopper 73 again as shown in Figure (a) to return the handle 6 to above or behind the hose holding part 3, and remove the tip of the pressure hose 8 from the hose holding part 3. Then, detach the hook part 51 that is hooked onto the upper edge of the steel panel 22, take the handle 6 and remove the concrete pouring aid 1 from inside the formwork 2, and move to the next pouring location. This concrete pouring aid 1 is stably installed simply by placing the hook part 5 over the upper opening of the formwork 2, making it easy to move from pouring location to pouring location. Furthermore, it does not get in the way of anchor bolt positioning plates, etc., which are placed over the upper opening of the formwork 2.
[0030] Incidentally, in the concrete pouring work for the continuous footing foundation 9 shown in Figure 1, the first step is to pour concrete up to the footing section 91, and after the concrete has hardened and its fluidity has decreased, the second step is to pour concrete onto the rising section 92. This is because if the concrete is poured all the way to the top of the rising section 92 at once, the resin panel 21 that forms the footing section 91 may be damaged by the pressure of the concrete, and the concrete may leak out of the formwork 2. However, when filling the footing section 91 with concrete in the first step, if the concrete adheres irregularly to the steel panel 22 and reinforcing bars 25 of the rising section 92 and dries and hardens quickly, the strength quality of the concrete in that area will decrease, and it will not integrate uniformly with the concrete poured in the second step.
[0031] Therefore, this concrete pouring aid 1 detachably connects the hose holding part 3 and the formwork insertion part 4, and extends the lower end of the formwork insertion part 4 to the vicinity of the footing part 91, thereby preventing the concrete poured in the first step from adhering to the steel panel 22 or reinforcing bars 25 of the rising part 92. Then, in the second step, by separating the formwork insertion part 4 and installing only the hose holding part 3 in the upper opening of the formwork 2, the concrete pouring aid 1 can be constructed so that it does not become embedded in the concrete of the rising part 92. As for the means of attaching and detaching the hose holding part 3 and the formwork insertion part 4, any suitable mechanism that is as simple as possible and easy to clean can be suitably adopted, such as mutual fitting, engagement by pins or hooks, or other methods.
[0032] By using the concrete placement aid configured as described above, the workload required for holding the pumping hose and backing plate during concrete placement work can be greatly reduced. Furthermore, because the concrete placement aid has a simple shape with few protrusions, it is easy to handle, such as when installing, removing, or moving it from the formwork, and it is also easy to clean off any concrete that adheres to it during placement work. Thus, the workability of concrete placement work is greatly improved.
[0033] Furthermore, the technical scope of the invention disclosed in this application should not be interpreted restrictively by the exemplary embodiments, but rather conceptually based on the claims. The names of the components used in the claims and specification are for convenience to facilitate a concrete understanding of the invention, and the names do not unnecessarily limit the concept or properties of the components. When implementing the invention disclosed in this application, the detailed shape, dimensions, structure, material, quantity, combination form with other elements, relative positional relationship, etc., of components not specifically identified in the claims may be modified as appropriate, within the scope of using a substantially equivalent operating principle to that of the exemplary embodiment, or within the scope of obtaining substantially equivalent or better effects than those of the exemplary embodiment.
[0034] Furthermore, the embodiments and other matters disclosed herein can also be understood as the technical concepts described in the following appendix. (Note 1) A concrete pouring aid is installed in the upper opening of a formwork surrounded by formwork panels placed opposite each other at predetermined intervals, and supplies concrete discharged from a pumping hose into the formwork, A hollow hose holder having an input port that communicates in the vertical direction, A formwork insertion part connected below the hose holding part and inserted into the formwork, A fastening portion that extends outward from the hose holding portion and is stretched across the upper opening of the formwork, A handle attached to the hose holder, It is equipped with, The handle is gate-shaped, straddling the opening of the hose holder, and both of its legs are pivotally attached to the hose holder, allowing it to rotate in the front-to-back direction. A locking mechanism is provided at the pivot point of both legs to restrict the rotation of the handle. The tip of the pressure hose is inserted into the inlet of the hose holder, and with the handle tilted forward, the tip of the pressure hose is clamped between the gripping portion that connects the two legs of the handle laterally and the hose holder, and is restrained by the locking means. A concrete pouring aid characterized by the following features. (Note 2) In the concrete pouring aids described in Appendix 1, The locking mechanism is provided by a ratchet mechanism located at the pivot points of both legs of the handle. A concrete pouring aid characterized by the following features. (Note 3) In the concrete pouring aids described in Appendix 2, The ratchet mechanism is covered by a removable concrete adhesion prevention cover. A concrete pouring aid characterized by the following features. (Note 4) In the concrete pouring aids described in Appendix 1, 2, or 3, The aforementioned fastening portion is provided with a hook portion that can be fastened to the upper edge of the formwork panel. A concrete pouring aid characterized by the following features. (Note 5) In the concrete pouring aids described in Appendix 1, 2, 3, or 4, A hose sway stopper is provided on the inside of the corner where the two legs of the handle and the gripping part connect, and which can contact multiple points on the outer surface of the tip of the pressure hose. A concrete pouring aid characterized by the following features. (Note 6) In the concrete pouring aids described in Appendix 1, 2, 3, 4, or 5, The hose holding section has left and right side walls surrounding the input opening, as well as a front wall and a rear wall, with the rear wall extending above the front wall. The formwork insertion section comprises a funnel-shaped portion that is detachably connected to the input port of the hose holding section, and a cylindrical portion that communicates with the funnel-shaped portion and extends downward along the rear wall of the hose holding section. A concrete pouring aid characterized by the following features. (Note 7) In the concrete pouring aids described in Appendix 1, 2, 3, 4, 5, or 6, The hose holding portion and the formwork insertion portion are detachably connected. A concrete pouring aid characterized by the following features. [Industrial applicability]
[0035] The invention disclosed herein can be widely used in construction and civil engineering work, particularly in work sites where concrete is poured into formwork. [Explanation of symbols]
[0036] 1. Auxiliary tools for concrete pouring 2 Formwork 21 Resin panels 22 Steel panels (formwork panels) 23 Ribs 25 Reinforcement bars 3. Hose holding section 31 Side wall 32 Front wall 33 Back wall 4. Formwork insertion section 41 Infundibulum 42 Cylindrical part 5 Latch part 51 Hook part 6. Handle 61 Legs 62 Gripping part 63 Shaft member 64 Hose vibration stopper 71 Claw wheel 72 Pin component 73 Stopper 74 Elastic members 75 Release lever 76 Detachable cover 8. Pressure hose 9. Continuous Footing Foundation 91 Footing section 92 Rising section
Claims
1. A concrete pouring aid is installed in the upper opening of a formwork surrounded by formwork panels placed opposite each other at predetermined intervals, and supplies concrete discharged from a pumping hose into the formwork, A hollow hose holder having an input port that communicates in the vertical direction, A formwork insertion part connected below the hose holding part and inserted into the formwork, A fastening portion that extends outward from the hose holding portion and is stretched across the upper opening of the formwork, A handle attached to the hose holder, It is equipped with, The handle is gate-shaped, straddling the opening of the hose holder, and both of its legs are pivotally attached to the hose holder, allowing it to rotate in the front-to-back direction. A locking mechanism is provided at the pivot point of both legs to restrict the rotation of the handle. The tip of the pressure hose is inserted into the inlet of the hose holder, and with the handle tilted forward, the tip of the pressure hose is clamped between the gripping portion that connects the two legs of the handle laterally and the hose holder, and is restrained by the locking means. A concrete pouring aid characterized by the following features.
2. In the concrete pouring aid described in claim 1, The locking mechanism is provided by a ratchet mechanism located at the pivot points of both legs of the handle. A concrete pouring aid characterized by the following features.
3. In the concrete pouring aid described in claim 2, The ratchet mechanism is covered by a removable concrete adhesion prevention cover. A concrete pouring aid characterized by the following features.
4. In the concrete pouring aid described in claim 1, 2, or 3, The aforementioned fastening portion is provided with a hook portion that can be fastened to the upper edge of the formwork panel. A concrete pouring aid characterized by the following features.
5. In the concrete pouring aid described in claim 1, 2, or 3, A hose sway stopper is provided on the inside of the corner where the two legs of the handle and the gripping part connect, and which can contact multiple points on the outer surface of the tip of the pressure hose. A concrete pouring aid characterized by the following features.
6. In the concrete pouring aid described in claim 1, 2, or 3, The hose holding section has left and right side walls surrounding the input opening, as well as a front wall and a rear wall, with the rear wall extending above the front wall. The formwork insertion section comprises a funnel-shaped portion that is detachably connected to the input port of the hose holding section, and a cylindrical portion that communicates with the funnel-shaped portion and extends downward along the rear wall of the hose holding section. A concrete pouring aid characterized by the following features.
7. In the concrete pouring aid described in claim 1, 2, or 3, The hose holding portion and the formwork insertion portion are detachably connected. A concrete pouring aid characterized by the following features.