JP6914986B2 - Leakage prevention equipment for mixer trucks - Google Patents

Description

According to the present invention, when the ready-mixed concrete is discharged from the concrete mixer truck, or when the ready-mixed concrete adhering to the scoop or the synthetic resin sheet is washed away with a water pump after the ready-mixed concrete is discharged, the rear end portion of the outer periphery of the drum and the rear end portion are used. The present invention relates to a leak preventive tool for preventing ready-mixed concrete, washing water, etc. from leaking from a gap formed between a scoop and a synthetic resin sheet.

When discharging ready-mixed concrete from the drum of a concrete mixer truck, or when flushing the ready-mixed concrete adhering to a scoop or synthetic resin sheet with a water pump after discharging the ready-mixed concrete, the rear end of the outer circumference of the drum and the outer circumference of the drum Ready-mixed concrete, wash water, etc. leak from the gaps between the scoop and synthetic resin sheet placed around the rear end, and adhere to the lower part of the mixer truck. Since the adhering ready-mixed concrete, washing water, etc. will stick if they are not washed away before drying, there is a problem that the work of washing away, etc. is troublesome.

In order to deal with such a problem, the prior art known to the applicant is not related to the invention known in the literature, but as shown in FIGS. 6 (1) and 6 (2), for example, the drum 7 of the mixer truck 10 Concrete 8 which is solidified by drying the ready-mixed concrete remaining in the vicinity of the concave groove rail 71 arranged at the rear end (for example, a scoop 12 or a synthetic resin sheet arranged around the discharge port 73) without daring to wash it away. Then, a method is adopted in which the gap generated between the scoop 12 (indicated by a broken line in FIGS. 6 (1) and (2)) and the discharge port 73 is reduced to prevent leakage of ready-mixed concrete, wash water, etc. ing. However, since the water pump is washed with a high water pressure, the above method can reduce the leakage of ready-mixed concrete, washing water, etc., but is insufficient. Further, there is a problem that the solidified concrete 8 is dangerous because it may suddenly fall. Further, ready-mixed concrete adheres to the dried and solidified concrete, and there is a problem that a large amount of water is required to wash the ready-mixed concrete with a water pump.

Therefore, an object of the present invention is to discharge the ready-mixed concrete from the drum of a concrete mixer truck, or to wash away the ready-mixed concrete adhering to a scoop or a synthetic resin sheet with a water pump after discharging the ready-mixed concrete. Prevents ready-mixed concrete, wash water, etc. from leaking from the gap between the rear end and the scoop or synthetic resin sheet placed around the rear end of the outer circumference of the drum, and further, the rear of the outer circumference of the drum. A mixer truck that eliminates the need to leave solidified concrete around the edges, does not pose the risk of sudden falling of concrete, and can be cleaned with a smaller amount of water compared to cleaning solidified concrete. The purpose is to provide leakage prevention equipment.

The present inventor has completed the present invention as a result of repeated diligent studies in order to solve the above problems.

(1) A leak-preventing tool attached to a recessed groove rail arranged at the outer peripheral end on the discharge port side of a drum equipped on a concrete mixer truck.
A leak prevention tool main body extending in a substantially arc shape in the longitudinal direction and locking members connected to both ends of the main body are provided, and the leak prevention tool main body is a concave groove rail arranged at the outer peripheral end of the drum. A base member having a substantially rectangular cross section and a guard member extending in a substantially vertical direction from the base member are provided, and a top plate is installed at the longitudinal end of the leakage prevention tool main body, and the top plate is a concave groove rail. A tip portion having elasticity to abut on the tip portion and a top plate main body connected to the tip portion are provided, and the locking member is for suspending the locking member main body and the leakage prevention tool arranged at the end of the locking member main body. A leak prevention device characterized by having a locking portion.
(2) The leak-preventing tool according to (1), wherein the locking member main body is made of an elastic body.
(3) Leakage prevention device The leakage prevention device according to any one of (1) and (2), wherein the cross section of the main body is substantially L-shaped.
(4) A cartridge that is fixed to the inside of the base member, extends in a substantially arc shape in the longitudinal direction, and comes into contact with the concave groove rail arranged at the outer peripheral end of the drum is installed, and the end of the cartridge in the longitudinal direction is the base member. The leak preventive tool according to any one of (1) to (3) , wherein a coil spring or a leaf spring is installed between the two.

According to the present invention, when the ready-mixed concrete is discharged from the drum of a concrete mixer truck, or when the ready-mixed concrete adhering to a scoop or a synthetic resin sheet is washed away with a water pump after the ready-mixed concrete is discharged, after the outer circumference of the drum. It is possible to prevent ready-mixed concrete, washing water, etc. from leaking from the gap formed between the end portion and the scoop or synthetic resin sheet arranged around the rear end portion on the outer periphery of the drum. Therefore, it is not necessary to wash away the leaked ready-mixed concrete, washing water, and the like, so that work efficiency can be improved. In addition, since it is possible to eliminate the need for solidified concrete to remain around the rear end of the outer circumference of the drum, there is no danger of the concrete falling suddenly, and a smaller amount of water is used compared to cleaning the solidified concrete. You will be able to wash it with use.

It is a perspective view of the leakage prevention tool which concerns on Embodiment 1 of this invention. (1) is a cross-sectional view taken along the line AA of the leak prevention tool shown in FIG. 1, and (2) to (4) show cross-sectional views of different examples. (1) is a diagram showing a drum of a concrete mixer truck, and (2) is a partially enlarged view of the drum of (1) as viewed from the discharge port side. (1) is a cross-sectional view taken along the line BB of a partially enlarged view of the drum shown in FIG. 3 (2), and FIG. −B sectional view. It shows a state in which the top plate is attached near the end portion in the longitudinal direction of the leakage prevention tool main body shown in FIG. (1) is a view showing the rear part of a known mixer truck, and (2) is a partially enlarged view of (1). (1) is a perspective view of the leakage prevention tool according to the second embodiment of the present invention, and (2) is a sectional view taken along the line AA of the leakage prevention tool shown in (1). This is another example of the longitudinal end of the cartridge according to the second embodiment of the present invention. This is another example of the cartridge according to the second embodiment of the present invention.

(Embodiment 1)
1 and 2 (1) to (4) show the first embodiment of the leak prevention device 1 according to the present invention. As shown in FIG. 1, the leak preventive tool 1 of the present embodiment 1 is connected to both ends of the leak preventive tool main body 2 extending in a substantially arc shape in the longitudinal direction and the upper end of the leak preventive tool main body 2. It is composed of a locking member 3 extending to.

As shown in FIG. 2 (1), the leak prevention tool main body 2 includes a base member 21 having a substantially rectangular cross section and a guard member 22 extending in a substantially vertical direction from the base member 21, and is substantially longitudinally provided. It has an arc shape. As shown in FIG. 4 (2), the base member 21 is installed at a position where the base member 21 comes into contact with the rail bottom 713 of the concave groove rail 71 arranged at the outer peripheral end of the drum 7 of the mixer truck. Therefore, the curvature of the rail bottom 713 of the concave groove rail 71 and the curvature of the base member 21 are about the same. As shown in FIGS. 2 (1) and 4 (2), the guard member 22 is installed so as to extend substantially in the vertical direction from the end portion of the base member 21 on the side of the first flange 711.

As shown in FIG. 2 (1), the cross section of the leak prevention tool main body 2 is substantially L-shaped. As shown in FIG. 4 (2), the cross section of the leakage prevention tool 1 mounted on the concave groove rail 71 has the guard member 22 higher than the first flange 711. With this configuration, the guard member 22 covers the gap between the rear end of the outer circumference of the drum and the scoop, synthetic resin sheet, etc., so that ready-mixed concrete, washing water, etc. can be prevented from leaking. can.

The cross section of the leak prevention tool main body 2 is not limited to a substantially L-shape, and for example, as shown in FIG. , As shown in FIG. 2 (3), a cross-sectional shape in which the guard member 22 forms a triangular shape in the vertical direction from the substantially central portion of the base member 21, and as shown in FIG. 2 (4), the substantially central portion of the base member 21. It can also be a cross-sectional shape that forms a crescent shape in the vertical direction from the portion. In addition, the guard member 22 may have various shapes as long as it is higher than the first flange 711 and can cover the gap.

The material of the base member 21 is not particularly limited, but an aluminum alloy may be used from the viewpoint of weight, a tin plate obtained by plating a steel plate with tin from the viewpoint of corrosion, or the like may be used. The material of the guard member 22 can be formed of the same material as the base member 21, but an elastic body such as rubber can also be used. Further, the height of the guard member 22 does not have to be constant, and may have a shape that increases from the central portion of the leakage prevention tool main body 2 toward both ends.

As shown in FIG. 1, the locking member 3 includes a locking member main body 31 and a locking portion 32 installed at the upper end of the locking member main body 31. The locking member main body 31 is connected to the leak prevention tool main body 2 at the lower end portion. The connecting method is not particularly limited, and a hole 23 is provided at the end of the leakage prevention tool main body 2, and the end of the leakage prevention tool main body 2 is passed through the hole 23 to be heat-sealed or tied to be connected. You may. Both ends of the leakage prevention tool main body 2 in the longitudinal direction may not be in contact with the rail bottom 713 and may be slightly curved outward. This is because the locking member main body 31 and the rail bottom 713 may slide and the locking member main body 31 may be damaged. An elastic body (for example, rubber, synthetic resin, spring, etc.) can be used as the material of the locking member main body 31, and the rail bottom 713 and the base member 21 are formed by urging the leakage prevention tool main body 2 upward. Can be slid while abutting against each other. In the present embodiment, the locking member main body 31 is rope-shaped, but is not limited to this, and may be a plate-shaped elastic body or the like.

The locking portion 32 can be fixed to a step bar (not shown), a step (not shown), a hopper 11, or the like arranged at the upper part of the rear end portion of the mixer truck. The locking portion 32 has a hook shape in the present embodiment, but is not limited to this, and various shapes can be used. Further, the end portion of the locking member main body 31 may be fixed by heat welding or binding. In the present embodiment, two locking members 3 are installed from the end of the base member 21, but the number may be one or three or more.

As shown in FIG. 5, a top plate 4 may be installed near the end of the leakage prevention tool main body 2. When discharging the ready-mixed concrete, the ready-mixed concrete may rise along the guard member 22 or the first flange in order to rotate the drum 7 at a high speed. By installing the top plate 4, even if the ready-mixed concrete rises, it is possible to prevent further rise. The top plate 4 is a plate-shaped member, and is installed so as to cover the end portion of the leakage prevention tool main body 2. The top plate 4 may be connected to the top plate main body 41 and the tip portion 42 may be installed at a position facing the concave groove rail 71 or the base member 21. Since the tip portion 42 is installed so as to come into contact with the first flange or the like of the concave groove rail 71 and slide, it is preferable to use an elastic synthetic resin or the like. The top plate 4 is supported by the base member 21 by extending the connecting member 43 from the base member 21 and connecting to the bottom surface of the top plate main body 41.

Not limited to the base member 21, the connecting member 43 may be extended and supported from the guard member 22 or the scoop 12. By installing the top plate 4 in this way, the rising ready-mixed concrete is stopped on the bottom surface of the top plate 4 and can be suppressed from scattering. Since the bottom surface of the top plate 4 is located at a high position when viewed from the operator, the ready-mixed concrete adhering to the bottom surface of the top plate 4 can be easily washed away by a water pump (not shown), so that the labor for cleaning should be reduced. Can be done.

Next, how to use the leak prevention tool 1 will be described. As shown in FIG. 3 (1), the drum 7 of the mixer truck is provided with a drum main body 72 and a concave groove rail 71 at the outer peripheral end of the drum main body 72 on the discharge port 73 side. Further, as shown in FIG. 3 (2), the drum 7 forms a discharge port 73 with the drum body 7 as an outer frame, and a concave groove rail 71 is installed on the outer periphery of the drum body 72. The cross-sectional view taken along the line BB in FIG. 3 (2) is. As shown in FIG. 4 (1), the concave groove rail 71 is installed on the drum main body 72, and the concave groove rail 71 extends vertically from both ends of the rail bottom 713 and the rail bottom 713 and is discharged. It is composed of a first flange 711 located on the outlet 73 side and a second flange 712 facing the first flange 711.

As shown in FIG. 4 (2), the leak prevention tool 1 is installed so that the base member 21 of the leak prevention tool main body 2 comes into contact with the rail bottom 713 of the recessed groove rail 71. The locking portion 32 of the leak prevention tool 1 is fixed to a step bar (not shown), a step (not shown), a hopper 11, or the like provided above the rear portion of the mixer truck 10. Since the drum 7 is basically rotated in the mixer truck 10 while the ready-mixed concrete is loaded, the rail bottom 713 and the base member 21 slide. The ready-mixed concrete is discharged by rotating the drum 7 from the discharge port 73 shown in FIGS. 6 (1) and 6 (2), or when the ready-mixed concrete adhering to the scoop or the synthetic resin sheet is washed away with a water pump. There is a gap between the rear end of the outer circumference of the drum (for example, the concave groove rail 71) and the scoop 12 or the synthetic resin sheet arranged around the rear end of the outer circumference of the drum. Can be blocked, so leakage of ready-mixed concrete, wash water, etc. can be prevented.

(Embodiment 2)
7 (1) and 7 (2) show the second embodiment of the leak prevention tool 1 according to the present invention. In the leak prevention tool 1 of the second embodiment, as shown in FIG. 7 (1), the cartridge 210 is installed inside the base member 21 of the leak prevention tool 1 of the first embodiment (the side facing the concave groove rail 71). It is a thing. As shown in FIG. 7 (1), the cartridge 210 has a substantially arc shape in the longitudinal direction and has a shape that overlaps with the base member 21. As shown in FIG. 7 (2), the cartridge 210 has a substantially rectangular cross section and is fixed to the base member 21. As the fixing method, various methods can be adopted as long as it is a removable method.

When the drum 7 rotates, the upper surface 210a of the cartridge and the bottom 713 of the rail slide, but when a predetermined time elapses, the cartridge 210 wears out. Since the cartridge 210 is detachably fixed to the base member 21, if only the cartridge 210 is replaced, it is not necessary to replace the leakage prevention tool main body 2.

FIG. 8 is another example of the longitudinal end of the cartridge according to Embodiment 2 of the present invention. The longitudinal end of the cartridge 210 may be slightly lifted from the base member 21, as shown in FIG. This is so that the cartridge 210 can come into contact with the end portion without rising from the concave groove rail 71. This is because it is possible to prevent foreign matter such as pebbles from entering the gap between the cartridge 210 and the base member 21 with such a configuration. Further, the elastic body 211 may be installed between the base member 21 and the cartridge 210 to urge the cartridge 210 toward the concave groove rail 71 side. As the elastic body 211, a coil spring, a leaf spring, or the like can be used. This is because it becomes easy to prevent foreign matter from entering the gap between the cartridge 210 and the base member 21. In addition, the longitudinal end of the cartridge 210 may be cut diagonally, as shown in FIG. This is because foreign substances such as pebbles are likely to come out. Further, the flange may be extended from the diagonally cut end to the outside of the first flange 711.

FIG. 9 shows another example of the cartridge according to the second embodiment of the present invention. As shown in FIG. 9, the cartridge may be configured as two cartridges 210L and 210R. The upper surfaces 210La and 210Ra of the cartridge are in contact with the bottom of the rail 713, and the lower surfaces 210Lb and 210Rb of the cartridge are in contact with the base member. The cross-sectional areas of the cartridges 210L and 210R are configured to increase toward the end (locking member side). With this configuration, even if the size of the leakage discharge tool main body 2 is not changed, the cartridges 210L and 210R can be changed to be attached to mixer trucks 10 having different sizes of the discharge ports 73. become able to. The elastic body 211 may be installed between the base member 21 and the cartridges 210L and 210R, or the longitudinal ends of the cartridges 210L and 210R may be cut diagonally.

1 Leakage prevention tool 2 Leakage prevention tool body 21 Base member 22 Guard member 23 Hole 210 Cartridge 3 Locking member 31 Locking member body 32 Locking part 4 Top plate 41 Top plate body 42 Tip part 43 Connecting member 7 Drum 71 Recessed groove Rail 711 First flange 712 Second flange 713 Rail bottom 72 Drum body 73 Discharge port 8 Concrete 10 Mixer truck 11 Hopper 12 Scoop

Claims (4)

It is a leak prevention tool attached to the concave groove rail arranged at the outer peripheral end on the discharge port side of the drum equipped on the concrete mixer truck.
A leakage prevention tool main body extending in a substantially arc shape in the longitudinal direction and locking members connected to both ends of the main body are provided .
The leakage prevention tool main body includes a base member having a substantially rectangular cross section in contact with a concave groove rail arranged at an outer peripheral end of the drum, and a guard member extending in a substantially vertical direction from the base member .
A top plate is installed at the end of the leakage prevention tool body in the longitudinal direction, and the top plate is installed.
The top plate includes a tip portion having elasticity that abuts on the concave groove rail, and a top plate main body that connects to the tip portion.
The locking member includes a locking member main body and a locking portion for suspending a leak preventing tool arranged at an end portion of the locking member main body. The leak prevention tool according to claim 1, wherein the locking member main body is made of an elastic body. The leak preventive tool according to claim 1 or 2, wherein the cross section of the leak preventive tool main body is substantially L-shaped. A cartridge that is fixed to the inside of the base member, extends in a substantially arc shape in the longitudinal direction, and comes into contact with the concave groove rail arranged at the outer peripheral end of the drum is installed.
The leak preventive tool according to any one of claims 1 to 3 , wherein a coil spring or a leaf spring is installed between the cartridges by floating the longitudinal end portion of the cartridge from the base member.

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