Concrete pouring chute
By attaching a flexible, cylindrical chute to a hopper, the challenges of concrete scattering and manual guidance tray movement during concrete pouring are addressed, enhancing the precision and efficiency of the concrete pouring process.
Patent Information
- Application Number
- JP2025000654U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2035-02-05
AI Technical Summary
During concrete pouring, the high fluidity of ready-made concrete can cause scattering and material separation when poured from a hopper, especially when the pouring point is elevated. Additionally, the need to manually move guidance trays to adjust for different pouring locations increases labor and reduces efficiency.
A cylindrical, flexible chute made of 0.5 mm thick 100% polyester fabric is attached to an existing hopper. The chute covers the hopper outlet to prevent scattering, guides the concrete smoothly to the outflow area, and can be deformed to fit narrow casting locations, eliminating the need for separate guide trays.
The solution effectively reduces scattering and material separation by guiding the concrete precisely, and decreases the workload associated with manually moving guidance trays, thereby improving the efficiency and accuracy of concrete pouring.
Smart Images

Figure 0003251075000001_ABST
Abstract
Description
[Technical field]
[0001] This device is intended to be attached to an existing "hopper," a piece of equipment used for pouring ready-mixed concrete. [Background technology]
[0002] When pouring ready mixed concrete into a formwork at a target location, the concrete was poured directly into the formwork from the hopper outlet. Summary of the Invention [Problem to be solved by the invention]
[0003] In concrete pouring work in construction work, concrete mixer trucks are used When receiving ready mixed concrete into a hopper or bucket, The process involves putting ready-mix concrete into a hopper or bucket, lifting it using construction machinery, moving it to the target pouring location, and pouring it. As mentioned above, when pouring concrete using a hopper, The ready-mix concrete has high fluidity due to its mix, and the material falls a long distance to the casting site. There was concern that if the temperature was too high, scattering of the material and material separation would occur. In addition, when pouring ready mixed concrete into a place where formwork has been erected, Sometimes an induction tray made of plywood is used. The target location for pouring ready-mix concrete may change each time. The induction tray mentioned above needs to be moved manually or otherwise moved each time. [Means for solving the problem]
[0004] The main body of this device is cylindrical and made of fabric (100% polyester (polyvinyl chloride)) with a thickness of 0.5 mm, making it durable and flexible. By attaching this device to an existing hopper, even if there is a sudden outflow from the hopper outlet, this device covers the outlet of the hopper, preventing the surrounding area from scattering, and by reducing the aperture width of the lower part of the device body (fresh concrete outlet), Smoothly guides fresh concrete to the outflow area. By using the materials mentioned above, even if the target casting location is a small formwork of 10 cm or so, the material is flexible and can be easily deformed and inserted. In addition, since the hopper itself is lifted and moved by a machine, by attaching this device to the hopper, the need to create a separate induction tray and the workload of manually moving the induction tray can be reduced. Effect of the Invention
[0005] In the case of pouring without using this device, the pouring from the hopper In order to reduce scattering outside the formwork at the target pouring location, It took a long time to pour the concrete because the distance from the formwork had to be reduced and the amount of runoff was limited. By swallowing the lower part of this device (the part where fresh concrete flows out) into the formwork, This was effective in reducing scattering outside the formwork. This also solves the need to limit the amount of fresh concrete that flows out. The time required for casting was also reduced. [Brief description of the drawings]
[0006] [Figure 1] FIG. 2 is a cross-sectional and exploded view of the concrete pouring chute of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0007] "The drawings accompanying this specification constitute a part of this application to provide further explanation of the present utility model." The chute body of this device has four mounting holes for hooks and strings for attaching it to a hopper, and iron shackles for connecting to the strings are attached to the mounting holes. Then, the iron shackle is connected to the string, and a hook is attached to the end of the string that is not connected to the iron shackle. When sewing the fabric into the shape shown in the attached figure, the overlap part of the seam If it is installed on the inside, it may hinder the guidance of fresh concrete. The seam allowance is sewn on the outside to facilitate smooth guidance of the fresh concrete inside the chute and to prevent adhesion inside. The end of the aforementioned string has been shaped into a hook, making it easy to attach and detach from the hopper. [Explanation of symbols]
[0008] 1 Body Fabric: 100% polyester (polyvinyl chloride) 2 Connection mounting holes 3 Iron Shackle 4. String 5. Hook
Claims
[Claim 1] The main body of this device is cylindrical, and the part that is swallowed into the hopper is By making the aperture wider and narrowing it downward toward the concrete outflow area, This guides the material to the outflow area and makes it easier to aim at the target casting location. This is a flexible chute that reduces scattering of materials when pouring ready-mix concrete.