Concrete placing device

Abstract

To provide a concrete placing device capable of efficiently performing the work of concrete placing at a location where concrete will be placed, which is located along the slope on a sloping terrain.SOLUTION: The concrete placing device is a device for pouring concrete at the appointed concrete placement positions set along a slope. The concrete placing device includes: means of movement, and concrete pouring means 3 that is designed to be movable using the means of movement. The means of movement includes: a movement route that is arranged to extend from a concrete loading place to a location where the concrete would be poured along the slope of the hillside; and a moving body movable along the movement route. The concrete pouring means 3 includes: a bucket 5 used for transporting and pouring concrete; a bucket support unit 4 that supports the bucket so as to swing; and a chute 8 that guides the concrete released from the bucket to the appointed concrete placement positions. The chute 8 includes an upper part 81, a lower part 82, and a concrete overflow barrier 83.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a concrete pouring device for pouring concrete at a concrete pouring target position provided along a slope on sloping ground. [Background technology]

[0002] A bucket device for transporting ready-mixed concrete is known which prevents ready-mixed concrete stored inside from spilling out even when tilted, and which also provides good workability at the work site (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-144316 Summary of the Invention [Problem to be solved by the invention]

[0004] The bucket device for transporting ready-mixed concrete described in Patent Document 1 is a bucket device that is configured so that the ready-mixed concrete stored inside does not spill out, even when the concrete is tilted, particularly when transporting it up a steep mountainside, and is not a bucket device used when pouring concrete at a concrete pouring target position set along a slope on sloping ground. The present invention provides a concrete pouring device that enables efficient pouring of concrete at concrete pouring target positions located along a slope on sloping ground. [Means for solving the problem]

[0005] The concrete pouring device according to the present invention is a concrete pouring device for pouring concrete at a concrete pouring target position provided along the slope on sloping ground, and comprises a moving means and a concrete pouring means provided so as to be movable by the moving means, the moving means comprising a moving path provided so as to extend from a concrete loading area to the side of the concrete pouring target position along the slope of the slope, and a moving body provided so as to be movable on the moving path, and the concrete pouring means comprises a bucket for transporting and pouring concrete, a bucket support device for swingably supporting the bucket, and a concrete pouring device for holding the concrete discharged from the bucket. and a chute that guides the concrete to a target position for pouring, wherein when the concrete pouring means is moved by the moving means to a concrete pouring work location next to the target position for pouring concrete, the chute is characterized by having an upstream section that is located below the concrete discharge outlet of each bucket and has a flow path with a concave cross section that extends along the slope of the slope, a downstream section that has a flow path with a concave cross section that extends from the end of the upstream section toward the target position for pouring concrete, and an overflow stop section for preventing concrete flowing down the upstream section, located near above the boundary position between the end of the upstream section, which is located far from the target position for pouring concrete, and the start of the downstream section. The overflow stopper section is characterized in that it is composed of a wall extending from the terminal end of one of the left and right side wall sections of the flow path in the upstream section, which is located farthest from the position where concrete is to be poured, to the terminal end of one of the side wall sections in the downstream section that is continuous with the one of the side wall sections in the upstream section, and above the upper end of the one of the side wall sections in the upstream section and the upper end of the one of the side wall sections in the downstream section. The bucket support device also includes a base formed of a rectangular parallelepiped frame, and a bucket support mechanism that supports the bucket so that it can swing. The base includes a lower frame portion formed into a rectangular frame by left and right long-side horizontal members and front and rear short-side horizontal members located on the lower side, an upper frame portion formed into a rectangular frame by left and right long-side horizontal members and front and rear short-side horizontal members located on the upper side, a left frame portion formed into a rectangular frame by upper and lower long-side horizontal members and front and rear vertical members located on the left side, and a lower frame portion formed into a rectangular frame by upper and lower long-side horizontal members and front and rear vertical members located on the right side. The bucket support mechanism is characterized by comprising a rectangular frame body having a right frame portion formed into a rectangular frame by side cross members and front and rear vertical members, a front frame portion formed into a rectangular frame by vertical members positioned on the left and right of the front side and short side horizontal members positioned above and below the front side, and a rear frame portion formed into a rectangular frame by vertical members positioned on the left and right of the rear side and short side horizontal members positioned above and below the rear side, and the bucket support mechanism is characterized by comprising a support shaft that is arranged between the left and right long side horizontal members of the upper frame portion and supports the bucket in a swingable manner. The present invention is also characterized in that a plurality of buckets are provided, and the upstream portion of the chute is positioned below each concrete discharge port of each of the plurality of buckets. The concrete pouring device according to the present invention makes it possible to efficiently pour concrete at concrete pouring target positions located along a slope on sloping ground. In particular, since it is equipped with a chute with an overflow stopper, it is possible to quickly and accurately deliver the required amount of concrete to the concrete pouring target position located along the slope on sloping ground, making it possible to efficiently pour concrete at the concrete pouring target position located on sloping ground. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 2 is a perspective view showing the concrete pouring means of the concrete pouring device. [Figure 2] 1A and 1B are diagrams showing a concrete pouring device, in which (a) is a front view, (b) is a plan view, and (c) is a right side view (moving means omitted). [Figure 3] FIG. 2 is a diagram showing an inclined form of the concrete pouring means. [Figure 4] FIG. 10 is a perspective view showing the function of the chute to prevent concrete from overflowing when pouring concrete. [Figure 5] 1A and 1B are diagrams showing a foldable work platform in use and in use; [Figure 6] 1 is a diagram showing the relationship between a concrete pouring target position at a site and a concrete pouring device. DETAILED DESCRIPTION OF THE INVENTION

[0007] Embodiment 1 The concrete pouring device of embodiment 1 is a concrete pouring device 1 for pouring concrete (ready-mixed concrete) C (see Figure 4) at a concrete pouring target position 10 located along a slope on a sloping ground S, as shown in Figure 6, for example.

[0008] The slope S is, for example, a slope along the surface of a mountain M. Mf is a forest area of ​​the mountain M. The concrete pouring target location 10 is, for example, a place to construct a concrete base for installing a hydraulic pipeline (not shown) for transporting water from a water intake facility 11 located at the top of mountain M to a hydroelectric power plant building 12.

[0009] As shown in FIG. 6, the concrete pouring device 1 includes a moving means 2 and a concrete pouring means 3 that is movable by the moving means 2.

[0010] The moving means 2 comprises a moving path 21, a moving body 22 arranged to be movable on the moving path 21, and a powered vehicle 23 connected to the moving body 22, and is configured to move the moving body 22 and the concrete pouring means 3 connected to the moving body 22 using the powered vehicle 23. The travel path 21 is provided so as to extend along the slope of the slope S next to the concrete pouring position 10, and to be continuous between the concrete loading area 24 and the concrete pouring work area 9 next to the concrete pouring position 10. That is, the moving path 21 is provided so as to extend from the concrete loading area 24 to the side of the concrete pouring target position 10 along the slope of the slope S. For example, the moving path 21 is configured by a rail, and the moving body 22 is configured by a carriage or the like for moving on the rail 21. As the transportation means 2, for example, a monorail type transportation means or the like is used.

[0011] As shown in FIGS. 1 and 2, the concrete placing means 3 is configured to include a bucket 5, a bucket support device 4, a work platform 7, and a chute 8.

[0012] The bucket 5 is a container equipped with the function of transporting and pouring concrete C, and is equipped with a storage section 50 having a concrete inlet 51 at the top opening and a concrete outlet 52 at the bottom, and an opening / closing device 55 for opening and closing the concrete outlet 52. The opening and closing device 55 includes an opening and closing plate 56 for opening and closing the concrete discharge port 52, and an opening and closing operation unit 57 for opening and closing the opening and closing plate 56.

[0013] The bucket support device 4 is a device that supports the bucket 5 so that it can swing, and is configured to include a base 40 that is formed of a rectangular parallelepiped frame, and a bucket support mechanism 6 that supports the bucket 5 so that it can swing.

[0014] As shown in Figures 1 and 2, the mounting base 40 is composed of a rectangular parallelepiped frame body, for example, having vertical members 41, long side horizontal members 42, and short side horizontal members 43 at parts corresponding to the sides of the rectangular parallelepiped. The platform 40 is configured by a rectangular parallelepiped frame body having upper, lower, upper, left, right, front and rear frame portions, ie, a lower frame portion, an upper frame portion, a left frame portion, a right frame portion, a front frame portion and a rear frame portion. In this specification, the terms front, back, top, bottom, left and right are defined as directions shown in FIGS.

[0015] The stand 40 has a lower frame portion formed into a rectangular frame by left and right long-side horizontal members (horizontal members extending from front to back) 42, 42 and front and rear short-side horizontal members (horizontal members extending from front to back) 43, 43, an upper frame portion formed into a rectangular frame by left and right long-side horizontal members 42, 42 and front and rear short-side horizontal members 43, 43 located on the upper side, a left frame portion formed into a rectangular frame by upper and lower long-side horizontal members 42, 42 located on the left side and front and rear vertical members 41, 41, and a right frame portion formed into a rectangular frame by left and right long-side horizontal members 42, 42 and front and rear short-side horizontal members 43, 43 located on the right side. The frame is made up of a rectangular parallelepiped frame body having a right frame portion formed into a rectangular frame by upper and lower long-side horizontal members 42, 42 and front and rear vertical members 41, 41, a front frame portion formed into a rectangular frame by vertical members 41, 41 positioned on the left and right of the front side and short-side horizontal members 43, 43 positioned above and below the front side, and a rear frame portion formed into a rectangular frame by vertical members 41, 41 positioned on the left and right of the rear side and short-side horizontal members 43, 43 positioned above and below the rear side.

[0016] Furthermore, between the left and right longitudinal cross members 42, 42 of the rectangular frame that constitutes the lower frame portion of the stand 40, a plurality of horizontal reinforcement members 44, 44... that connect the left and right longitudinal cross members 42, 42 are provided at predetermined intervals in the longitudinal direction of the rectangular frame. In addition, between the upper and lower longitudinal side cross members 42, 42 of the rectangular frame that constitutes the left and right frame portions of the stand 40, a plurality of vertical reinforcing members 45, 45... that connect the upper and lower longitudinal side cross members 42, 42 are provided at predetermined intervals in the longitudinal direction of the rectangular frame, and bracing members 46, 46... are also provided. The rear frame of the stand 40 is provided with braces 46 (see FIG. 2(c)).

[0017] The bucket support mechanism 6 is configured to support the bucket 5 arranged inside the frame 40 so that the bucket 5 can swing. The bucket support mechanism 6 is configured, for example, with left and right shaft fixing portions 61, 61 arranged to face the left and right longitudinal side cross members 42, 42 of the upper frame portion of the frame body 40, a support shaft 62 arranged to extend between the left and right shaft fixing portions 61, 61 and having its end sides fixed to the shaft fixing portions 61, and a bucket hanging portion 65 arranged on the bucket 5 and rotatably connected to the support shaft 62. For example, threaded portions are formed on both ends of the support shaft 62, and the support shaft 62 is fixed to the shaft fixing portion 61 by inserting the threaded portions of the support shaft 62 into the grooves of the shaft fixing portion 61 and tightening a nut to the threaded portions. In this way, the bucket support mechanism 6 is configured such that the bucket suspending portion 65 provided on the bucket 5 is rotatably attached to the support shaft 62 fixed to the upper frame portion of the frame body 40, and the bucket 5 is attached so that it can swing around the support shaft 62 as the center of rotation.

[0018] That is, the bucket support mechanism 6 is provided with a support shaft 62 that is provided across the left and right longitudinal side cross members 42, 42 of the upper frame portion of the base 40 and supports the bucket 5 in a swingable manner, and as a result, as shown in FIGS. 3(a), (b), (c), and (d), even if the tilt angle α of the base 40 fluctuates, the bucket support mechanism 6 is a mechanism that swingably supports the bucket 5 so that the center line 5C of the bucket 5 is always maintained on the vertical line V.

[0019] 1 to 3 show an example of the concrete pouring means 3 on which three buckets 5, 5, 5 are mounted at predetermined intervals along the longitudinal direction (front-rear direction) of the base 40. That is, an example of a concrete pouring means 3 is shown in which three support shafts 62 are provided at a predetermined interval along the extension direction of the left and right longitudinal side cross members 42, 42 that constitute the upper frame portion of the frame 40, and a bucket 5 is individually attached to each of the support shafts 62, 62, 62 in a manner that allows it to swing. In this way, in the case of a concrete pouring means 3 equipped with multiple buckets 5, 5..., it is possible to pour a large amount of concrete C at the concrete pouring target position 10 at once, making it possible to carry out concrete pouring work efficiently.

[0020] The work floor 7 is a member that serves as a foothold when pouring concrete at the concrete pouring target position 10, and is composed of, for example, a peripheral frame portion 70 and a floor board portion 71 provided inside the peripheral frame portion 70. The floor plate portion 71 is made of a non-flat plate such as a mesh steel plate or a plate with a concave-convex surface. The work floor 7 is attached via supports 69, 69 to the front and rear vertical members 41, 41 of either the left or right frame part that is positioned on the opposite side of the concrete pouring side relative to the concrete pouring position 10 when the concrete pouring means 3 moves to the concrete pouring work area 9 next to the concrete pouring position 10. In other words, the work floor 7 is attached via supports 69, 69 to the front and rear vertical members 41, 41 of one of the left and right frame portions of the frame base 40, which is located on the opposite side of the concrete pouring side relative to the concrete pouring target position 10, and is configured so that the floor surface of the floor board portion 71 intersects the frame surface of the one frame portion so as to be perpendicular or approximately perpendicular to it, and extends continuously in the front-to-rear direction outside the frame base 40. In this way, since the concrete pouring means 3 is equipped with a working platform 7, workers can work on the working platform 7, and the work of pouring concrete C at concrete pouring target positions 10 set along the slope of the sloping ground S can be carried out safely and efficiently.

[0021] The work platform 7 is attached to one of the left and right frame portions of the stand 40 so as to be foldable. For example, as shown in Figure 1, both ends of one long edge of the work floor 7 are rotatably attached to the front and rear vertical members 41, 41 of one frame part by connecting means 76 such as hinges as shown in Figure 5, and one end side 75 of a support member 69 is rotatably attached to the other long edge side of the front and rear short edges of the work floor 7. As shown in Figure 5, the front and rear vertical members 41, 41 of one of the frame portions are provided with an in-use engagement portion 78, which is composed of an engagement shaft or the like for engaging an engagement recess 77 provided on the other end side of the support material 69, and a folding engagement portion 79. Then, by engaging the engagement recesses 77, 77 of each support member 69, 69 provided on the other long edge side of the front and rear short edges of the work floor 7 with the in-use engagement portions 78, 78, the floor surface of the floor board portion 71 of the work floor 7 is set to an in-use state in which it is perpendicular or nearly perpendicular to the frame surface of one of the frame portions. In addition, by engaging the engagement recesses 77, 77 of each support member 69, 69 provided on the other long edge side of the front and rear short edges of the work floor 7 with the folding engagement portions 79, 79, the floor surface of the floor board portion 71 of the work floor 7 is set to a folded state in which it faces parallel or approximately parallel to the frame surface of one of the frame portions.

[0022] In this way, the work floor 7 is configured to be able to be set in a folded state so that the floor surface of the floor board portion 71 faces the frame surface of one of the frame portions. Therefore, when moving the concrete pouring means 3 using the moving means 2, by setting the work floor 7 to the folded state, if there are plants or other obstacles along the movement path, the concrete pouring means 3 can be moved so that the work floor 7 does not get in the way. Furthermore, when moving the concrete pouring means 3 using the moving means 2, it is preferable to move the work platform 7 in its folded state, but it is also possible to move the work platform 7 while it is set in its in-use state.

[0023] When the concrete pouring means 3 is moved by the moving means 2 to the concrete pouring work area 9 next to the concrete pouring target position 10, the chute 8 is equipped with an upstream section 81 which is located below the concrete discharge outlets 52, 52 of the multiple buckets 5, 5... and which has a cross-sectionally concave flow path 80 which extends along the slope of the concrete pouring work area 9 on the slope S, a downstream section 82 which has a cross-sectionally concave flow path 80 which extends from the end of the upstream section 81 toward the concrete pouring target position 10, and an overflow stop section 83.

[0024] The upstream portion 81 and the downstream portion 82 each have a flow path 80 having a concave cross section and configured by a bottom plate portion 80a and left and right side wall portions 80b, 80b. The chute 8 is fixed to the connecting means at the rear side of the bottom plate portion 80a of the upstream portion 81 and at the center between the left and right short-side cross members 43 and horizontal reinforcements 44, 44... on the rear side of the lower frame portion of the frame body 40. That is, the upstream portion 81 of the chute 8 is fixed to the center between the left and right sides of the upper surface of the lower frame portion so that it is positioned continuously in a straight line from a position near the front short-side cross member 43 of the lower frame portion of the frame body 40 to a rear position beyond the rear short-side cross member 43 of the lower frame portion of the frame body 40. In other words, the upstream portion 81 of the chute 8 is provided so as to be positioned below the concrete discharge outlets 52, 52... of each of the plurality of buckets 5, 5.... For example, it is preferable that the upstream portion 81 of the chute 8 is provided on the upper surface of the lower frame portion so that the center of each of the concrete discharge outlets 52, 52... of each of the plurality of buckets 5, 5... coincides with the midpoint between the left and right side wall portions 80b, 80b of the upstream portion 81 of the chute 8. The downstream section 82 of the chute 8 is configured so that the flow path 80 extends in a curved manner from the end of the upstream section 81, which is a rear position beyond the short side cross member 43 on the rear side of the lower frame section, toward the concrete pouring target position 10. At the boundary position between the end of the upstream section 81 and the beginning of the downstream section 82, an overflow stopper 83 for concrete flowing down the upstream section 81 is provided near the top of the boundary position, located on the opposite side from the concrete pouring side.

[0025] The overflow stopper section 83 is composed of a wall 80W that extends from the terminal end of one of the side wall sections 80b (for example, the right side wall section 80b shown in Figure 2(b)) of the left and right side wall sections 80b, 80b of the flow path 80 in the upstream section 81, which is located on the opposite side from the concrete pouring side, to the terminal end of one of the side wall sections 80b (for example, the right side wall section 80b shown in Figure 2(b)) of the downstream section 82 that is continuous with the one of the side wall sections 80b, and above the upper end 80t of one of the side wall sections 80b of the upstream section 81 and the upper end 80t of one of the side wall sections 80b of the downstream section 82.

[0026] More specifically, as shown in Figure 4, the overflow prevention section 83 is composed of a wall body 80W that is arranged to extend upward from the upper ends 80t, 80t of each of the side wall sections 80b, 80b near the boundary 80c between one of the left and right side wall sections 80b, 80b of the flow path 80 in the upstream section 81, which is located on the opposite side from the concrete pouring side, and one of the left and right side wall sections 80b, 80b of the flow path 80 in the downstream section 82, which is located on the opposite side from the concrete pouring side. The wall body 80W is composed of, for example, an upstream wall body 80W1 formed so that the wall height gradually decreases from the position 80e directly above the boundary portion 80c described above toward the upstream end side of the upstream portion 81, and a downstream wall body 80W2 arranged so as to extend from the position 80e directly above the boundary portion 80c described above toward the downstream end side of the downstream portion 81. The downstream wall 80W2 is configured, for example, by a wall having the same height from the starting end (directly above position 80e) to the terminal end. The upstream wall 80W1 may be configured with a wall having the same height from the starting end to the terminal end (directly above position 80e).

[0027] Therefore, when the concrete pouring means 3 is moved by the moving means 2 to the concrete pouring work area 9 next to the concrete pouring position 10, the concrete C discharged from the concrete discharge outlet 52 of the bucket 5 falls into the flow path 80 of the upstream section 81 of the chute 8, as shown in Figure 4, flows backward along the slope of the flow path 80 of the upstream section 81, then changes direction and flows down the flow path 80 of the downstream section 82 to be poured at the concrete pouring position 10. When the concrete C is poured at the concrete pouring position 10 via the upstream section 81 and downstream section 82 of the chute 8, the overflow stopper 83 prevents the concrete C from overflowing outside the chute 8. In other words, since the chute 8 is configured with an overflow stopper 83, it is possible to prevent the concrete C that has fallen into the flow path 80 of the upstream part 81 of the chute 8 from overflowing outside the chute 8 at the boundary between the upstream part 81 and the downstream part 82 due to the force with which it flows down the upstream part 81. In this way, since the chute 8 is provided with the overflow stopper 83, the required amount of concrete C can be quickly and accurately delivered to the concrete pouring position 10, allowing for efficient concrete pouring work. In addition, since it is possible to eliminate the loss of concrete C that would occur if the concrete overflowed outside the chute 8 and the effort required for cleaning, it is possible to efficiently pour concrete C at the concrete pouring position located along the slope on sloping ground without waste.

[0028] Furthermore, as shown in Figure 6, the powered vehicle 23 and the mobile body 22 are connected, and as shown in Figure 2(a), the platform 40 on which the bucket 5, work platform 7, and chute 8 are mounted is connected to the mobile body 22 by a connecting means 35, thereby forming a concrete pouring device 1 in which the concrete pouring means 3 can be moved back and forth between the concrete loading area 24 and the concrete pouring work location 9 next to the concrete pouring target position 10 by the moving means 2.

[0029] Next, concrete pouring work using the concrete pouring device 1 will be described. First, at the concrete loading area 24, concrete (ready-mixed concrete) C is stored, for example, in the storage section 50 of each bucket 5, 5, 5, and then the powered vehicle 23 of the moving means 2 is operated to move the concrete pouring means 3 to the concrete pouring work area 9 next to the concrete pouring target position 10. After the concrete pouring means 3 has been moved to the concrete pouring work site 9, the work platform 7 is set to the ready-to-use state, and an operator operates the opening / closing control part 57 of the bucket 5 on the work platform 7 to open the concrete discharge outlet 52. The concrete C discharged from the concrete discharge outlet 52 of the bucket 5 falls into the flow path 80 of the upstream part 81 of the chute 8, flows down from the upstream part 81 to the downstream part 82, collides with the overflow stopper part 83, flows down to the downstream part 82, and flows down the flow path 80 of the downstream part 82 to be poured at the concrete pouring target position 10.

[0030] The concrete pouring device 1 of embodiment 1 is equipped with a work platform 7 that serves as a foothold when pouring concrete at the target concrete pouring position 10, and a chute 8 with an overflow stopper 83 that directs the concrete C released from the bucket 5 to the target concrete pouring position 10.Therefore, when pouring concrete C at the target concrete pouring position 10 located along the slope of sloping ground S, the worker's footing is stable and the required amount of concrete C can be quickly and accurately delivered to the target concrete pouring position 10, making it possible to carry out the concrete pouring work safely and efficiently.

[0031] Embodiment 2 The floor surface of the floorboard portion 71 of the work floor 7 is an inclined surface having an inclination angle that follows the slope of the sloped ground S, so that the worker is likely to slip on the floor surface. Therefore, it is preferable to provide a work floor having anti-slip boards such as crosspieces or other anti-slip means fixed to the floor surface of the floorboard portion 71 of the work floor 7. In this way, if the concrete pouring device 1 is provided with a working floor 7 configured with anti-slip means fixed to the floor surface, it becomes difficult for the worker to slip on the floor surface of the working floor 7, and work on the working floor 7 can be carried out stably and safely. In other words, in this case, concrete pouring work can be carried out more efficiently.

[0032] Embodiment 3 In the first embodiment, the working floor 7 is exemplified as being foldable, but the working floor 7 may be a working floor that is fixed in a state when in use, or a working floor that is provided detachably.

[0033] Embodiment 4 In each of the above-described embodiments, the concrete pouring means 3 is exemplified as a frame 40 having a rectangular parallelepiped shape that is long in the direction along the slope of the slope S, and is equipped with a plurality of buckets 5, 5... spaced apart along the longitudinal direction of the frame, but the concrete pouring means 3 of the present invention may be configured to have at least one or more buckets 5. [Explanation of symbols]

[0034] 1 concrete pouring device, 2 moving means, 3 concrete pouring means, 4 Bucket support device, 5 Bucket, 6 Bucket support mechanism, 8 Chute, 10 concrete pouring target position, 21 moving path, 22 moving body, 24 concrete loading area, 40 platform, 80 flow path, 81 upstream section, 82 downstream section, 83 Overflow stop, S slope.

Claims

1. A concrete pouring device for pouring concrete at a concrete pouring target position provided along a slope on sloping ground, Means of transportation, a concrete placing means provided so as to be movable by a moving means, The means of transportation are a moving path extending from the concrete loading area to the side of the concrete pouring position along the slope of the slope; a moving body provided so as to be movable along a moving path, The concrete placement method is a bucket for transporting and placing concrete; a bucket support device that supports the bucket so that the bucket can swing; a chute that guides the concrete discharged from the bucket to a concrete placement target position; Equipped with The concrete pouring device is characterized in that, when the concrete pouring means is moved by the moving means to a concrete pouring work location next to the location where the concrete is to be poured, the chute has an upstream section that is located below the concrete discharge outlet of the bucket and has a concave cross-sectional flow path that extends along the slope of the slope, a downstream section that has a concave cross-sectional flow path that extends from the end of the upstream section toward the location where the concrete is to be poured, and an overflow stop section for concrete flowing down the upstream section, located near above the boundary position between the end of the upstream section, which is located far from the location where the concrete is to be poured, and the start of the downstream section.

2. The concrete pouring device described in claim 1, characterized in that the overflow stopper portion is composed of a wall extending from the terminal end of one of the left and right side wall portions of the flow path in the upstream portion, which is located farthest from the position where the concrete is to be poured, to the terminal end of one of the side wall portions in the downstream portion that is continuous with the one side wall portion in the upstream portion, and above the upper end of the one side wall portion in the upstream portion and the upper end of the one side wall portion in the downstream portion.

3. The bucket support device The bucket support mechanism includes a frame formed of a rectangular parallelepiped frame and a bucket support mechanism that supports the bucket so that the bucket can swing. The stand is A lower frame portion formed into a rectangular frame by left and right long-side horizontal members and front and rear short-side horizontal members located on the lower side; an upper frame portion formed into a rectangular frame by left and right long-side horizontal members and front and rear short-side horizontal members positioned on the upper side; A left frame portion formed into a rectangular frame by upper and lower longitudinal horizontal members and front and rear vertical members located on the left side; A right frame portion formed into a rectangular frame by upper and lower longitudinal horizontal members and front and rear vertical members located on the right side; A front frame portion formed into a rectangular frame by vertical members positioned on the left and right sides of the front side and short horizontal members positioned above and below the front side; The rear frame portion is formed into a rectangular frame by vertical members positioned on the left and right sides of the rear side and horizontal members positioned on the top and bottom of the rear side, and the rear frame portion is formed into a rectangular frame by vertical members positioned on the left and right sides of the rear side and horizontal members positioned on the top and bottom of the rear side.

2. A concrete pouring device according to claim 1, wherein the bucket support mechanism comprises a support shaft that is provided between the left and right longitudinal cross members of the upper frame portion and that supports the bucket so that it can swing.

4. 4. A concrete pouring device according to claim 1, further comprising a plurality of buckets, the upstream portion of the chute being positioned below each concrete discharge outlet of each of the plurality of buckets.

Images