Conveyor path blocking device

Abstract

To provide a conveying route blocking device capable of preventing danger by quickly blocking the flow from the upstream of a conveying route while preventing traffic obstruction on a road during work when dangerous impurities are mixed into the conveying route such as a sewer. [Solution] A bag that can be filled with a gas or liquid that can be supplied or discharged, a fixing part that fixes the bag at a position lower than the conveying path in a manhole or open channel, and a hose that passes under the road surface and connects the bag to a supply and discharge device outside the road are installed, and by filling the bag with gas or liquid, the bag expands and fills almost the entire manhole or almost half of it, essentially blocking the flow from upstream of the conveying path.

Description

[Technical field]

[0001] The present invention relates to, for example, a conveying path blocking device, and in particular to a conveying path blocking device that is installed midway along a conveying path, such as a water supply pipe, a sewer pipe, a culvert pipe, an agricultural water pipe, an open conduit, various pipelines, or the like, which mainly conveys liquids, waterways, or gases. [Background technology]

[0002] Foreign objects may enter pipes, conduits, and other transportation routes that transport liquids or gases due to unexpected accidents. In such cases, it is necessary to quickly block the flow from the upstream of the transportation route to stop the transportation of the foreign objects.

[0003] When a sudden accident requires that the conveying path be immediately shut off, simply opening part of the conveying path to insert a shutoff device will not be enough, so it is necessary to install a shutoff device in the conveying path in a manner that does not normally interfere with conveying, and to activate the shutoff device in an emergency.

[0004] In view of the above-mentioned limitations, in Patent Document 1, it is possible to install a shutoff device in the transport route in a manner that does not normally impede transport, and to activate the shutoff device in an emergency. However, when working using the installed shutoff device, for example, the supply and discharge device and the connecting pipes (hoses, etc.) connecting to the bag body will be deployed on the road over a considerable area around the manhole. This will cause traffic obstructions on the road during preparation for work, during work, and when cleaning up after work. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2018-053427 A Summary of the Invention [Problem to be solved by the invention]

[0006] In light of the problems that have arisen so far as described above, the present application has as its object to provide a transport route blocking device that can prevent danger by blocking the flow from upstream of a transport route such as a sewer as quickly as possible when dangerous impurities have become mixed into the route, or that can begin work quickly when it is necessary to block the flow from upstream of an agricultural water pipe, agricultural irrigation canal, etc., and that can prevent traffic obstructions caused by supply and discharge equipment and connecting pipes deployed on the road during work. [Means for solving the problem]

[0007] In order to solve such problems, the conveying path blocking device of the first aspect of the present invention comprises a bag body that is arranged in a folded state in a box or open channel section provided in the middle of the conveying path, and that can be filled with a gas or liquid that can be supplied or discharged through a supply and discharge port, a fixing part that fixes the bag body to the box or open channel section, and a hose that connects the supply and discharge port to the supply and discharge device and / or a pipe through which the hose passes, and is characterized in that the hose and / or the pipe through which the hose passes are passed under the road surface.

[0008] According to this configuration, a bag made of an elastic body such as rubber fixed to a fixing part installed in a box or open channel provided in the middle of the conveying path is filled with gas or liquid and inflated, and the bag fills the box or open channel and applies pressure to a wall, etc., making it possible to substantially block the flow from the upstream of the conveying path. Furthermore, by passing a hose connecting a supply / discharge device that fills the bag with a gas or liquid such as compressed air or carbon dioxide gas and the bag through a pipe from the box or open channel to the side of the road and burying it under the road surface, if a supply / discharge device outside the road is connected to the connecting pipe, the discharge work can be started quickly, and since the supply / discharge device and the hose are not on the road during the work, it is possible to prevent traffic obstruction. However, it is not limited to passing a hose through a pipe and burying it under the road surface, and the supply / discharge device and the bag may be connected through a hose through a pipe buried under the road surface at the start of the work.

[0009] The conveying path blocking device of the second aspect of the present invention may be characterized in that, compared to the first aspect, a guide rail for guiding and inflating the bag body is arranged on a wall surface of the conveying path.

[0010] According to this aspect, the bag is guided by the guide rail while expanding, filling the box or open channel, and applying pressure to the wall surface to make tight contact therewith, thereby preventing leakage of fluid from upstream to downstream.

[0011] The transport path blocking device according to a third aspect of the present invention may be characterized in that, in contrast to the first aspect, a plate forming a flat surface is disposed on a wall surface of the transport path.

[0012] If the wall surface is not flat due to unevenness or the like, the liquid will leak downstream if the adhesion with the bag body is incomplete. According to this embodiment, a flat surface is formed on the upstream blocking surface of the conveying path of the box section or the wall surface of the open channel section, so the bag body can adhere to the plate and prevent leakage of fluid from upstream to downstream.

[0013] According to a fourth aspect of the present invention, in addition to the first aspect, the transport path blocking device may be characterized in that the bag body is constituted by a plurality of small bag bodies divided into two or more pieces.

[0014] The conveying path blocking device according to the fifth aspect of the present invention, compared to the first or fourth aspect, may be characterized by a bag capacity that enables the formation of a working space in the gap between the bag after filling with gas or liquid and the box portion or the open channel portion.

[0015] According to this embodiment, it is not necessary to inflate the bag to fill the entire volume of the box or open channel, and since the volume of the bag is small, the filling time is short, and it is possible to block the flow from the upstream of the conveying path at a higher speed. Furthermore, even after the bag is inflated, it is possible to inspect and check the internal condition by utilizing the gap.

[0016] The conveyance path blocking device according to the sixth aspect of the present invention may be characterized in that, with respect to the fifth aspect, it includes a submersible pump, and a drainage hose of the submersible pump that passes under the road surface and / or a pipe through which the drainage hose passes.

[0017] The conveyance path blocking device according to the seventh aspect of the present invention may be characterized in that, with respect to the first aspect or the fourth aspect, the bag body incorporates a shutter structure formed by arranging and connecting a plurality of members having a small width, a horizontally long shape, and a thickness capable of ensuring a desired strength in a pleated manner.

[0018] According to each aspect of the present invention, by passing a hose connecting the supply / discharge device and the bag body through a pipe and burying it under the road surface, when the supply / discharge device and the hose are connected, the discharge operation can be started quickly. By rapidly filling a bag body made of an elastic body such as rubber with a gas such as compressed air or carbon dioxide gas or a liquid, the bag body expands to fill the bucket portion and substantially rapidly blocks the flow from the upstream of the conveyance path. Since the supply / discharge device and the hose are not on the road during the operation, it is possible to prevent obstacles to traffic.

Brief Description of the Drawings

[0019] [Figure 1] As a conventional form, it is a schematic top view of a conveyance path with a bucket portion formed for the purpose of a mud puddle etc. in the middle. [Diagram 2] As a conventional form, it is a schematic perspective view of a conveyance path with an open channel portion formed for the purpose of a mud puddle etc. in the middle. [Figure 3A] It is a schematic top view of a form in which a supply / discharge device is provided near a road according to an embodiment of the present invention, and a bag body is fixed and installed at a fixing portion of a bucket portion under a manhole on the road. [Figure 3B] It is a schematic top view of a form in which a supply / discharge device is provided near a road according to an embodiment of the present invention, and a bag body is fixed and installed at a fixing portion of the bottom of an open channel portion in the middle of the conveyance path. [Figure 4A] It is a schematic cross-sectional view seen from the A direction shown in FIG. 3A explaining the normal state in which a bag body is fixed and installed at a fixing portion of the bottom of a bucket portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is not blocked. [Figure 4B] It is a schematic cross-sectional view seen from the B direction shown in FIG. 3B for explaining a normal state in which a bag body is fixed and installed at a fixing portion at the bottom of an open channel portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is not blocked. [Figure 4C] It is a schematic cross-sectional view seen from the B direction shown in FIG. 3B for explaining a normal state in which a bag body is fixed and installed at a fixing portion at the upper part of an open channel portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is not blocked. [Diagram 5] It is a schematic top view for explaining a normal state in which a bag body is fixed and installed at a fixing portion at the bottom of a square portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is not blocked. [Figure 6A] It is a schematic top view for explaining a state in which a bag body is fixed and installed at a fixing portion at the bottom of a square portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is blocked. [Figure 6B] It is a schematic top view for explaining a state in which a bag body is fixed and installed at a fixing portion at the bottom of an open channel portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is blocked. [Figure 6C] It is a schematic top view for explaining a state in which a bag body is fixed and installed at a fixing portion at the upper part of an open channel portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is blocked. [Figure 7A] It is a schematic cross-sectional view seen from the A direction shown in FIG. 6A for explaining a state in which a bag body is fixed and installed at a fixing portion at the bottom of a square portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is blocked. [Figure 7B] It is a schematic cross-sectional view seen from the B direction shown in FIG. 6B for explaining a state in which a bag body is fixed and installed at a fixing portion at the bottom of an open channel portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is blocked. [Figure 7C] It is a schematic cross-sectional view seen from the B direction shown in FIG. 6C for explaining a state in which a bag body is installed at a fixing portion at the upper part of an open channel portion in the middle of a conveyance path according to an embodiment of the present invention, and the flow from the upstream is blocked. [Figure 8A]This is a schematic cross-sectional view taken from direction B in Figure 5, which illustrates the normal state in which a bag body is fixed to a fixed portion at the bottom of a box in the middle of a conveying path in one embodiment of the present invention, a guide rail is installed to guide the bag body in expanding, and the flow from upstream is not blocked. [Figure 8B] This is a cross-sectional schematic diagram seen from direction B in Figure 5, which illustrates the normal state in which a bag body is fixed to a fixed part at the top of a box section located midway along a conveying path in one embodiment of the present invention, a guide rail is installed to guide the bag body in expanding, and the flow from upstream is not blocked. [Figure 9] FIG. 6B is a schematic cross-sectional view taken from direction A in FIG. 6A, illustrating a state in which a bag body and a guide rail for guiding the bag body when inflated are installed in a box section in the middle of a conveying path in one embodiment of the present invention, blocking the flow from upstream. [Figure 10A] FIG. 6B is a schematic cross-sectional view taken from direction B in FIG. 6A, which illustrates a state in which a bag body and a plate that forms a plane that guides the bag body to be pressed against the wall of the box when expanded are installed in a box located midway along a conveying path in one embodiment of the present invention, thereby blocking the flow from upstream. [Figure 10B] This is a cross-sectional schematic diagram illustrating a state in which a fixed portion is installed at the top of a box portion located in the middle of a conveying path in one embodiment of the present invention, and a plate is installed that forms a plane together with the bag body to guide the bag body to be pressed against the wall of the box portion when expanded, thereby blocking the flow from upstream. [Figure 11] FIG. 6B is a schematic cross-sectional view taken from direction A in FIG. 6A, illustrating the normal state in which a bag body of a size that creates a working space when expanded is placed in a box in the middle of a conveying path in one embodiment of the present invention, and does not block the flow from upstream. [Figure 12] FIG. 6B is a schematic cross-sectional view taken from direction A in FIG. 6A, illustrating a state in which a bag body of a size large enough to create a working space when expanded is placed in a box in the middle of a conveying path in one embodiment of the present invention, blocking the flow from upstream. [Figure 13] FIG. 6B is a schematic cross-sectional view seen from a direction A shown in FIG. 6A, illustrating a state in which a bag according to one embodiment of the present invention is constituted by a plurality of small bags and blocks a flow from upstream. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, the embodiment of the present invention will be described with reference to the drawings. Note that the scope necessary for the description to achieve the object of the present invention is shown in a schematic manner, and the scope necessary for the description of the relevant part of the present invention will be mainly described, and the parts that are omitted from the description will be based on known techniques. In addition, since the illustrated drawings are used to explain one embodiment of the present invention, the present invention is not limited by the drawings used.

[0021] Figures 1 and 2 show conventional forms. Figure 1 is a schematic diagram of a conventional form of a conveying path in which a square section is formed in the middle for the purpose of catching mud, etc., as seen from above. As shown in Figure 1, conventionally, for the purpose of inspection and repair of the conveying path 1, a square section 10 having a substantially rectangular shape (including a substantially cubic shape) or a substantially cylindrical shape and a manhole 11 for allowing access to the square section 10 from the outside are provided under the road surface of a road, passageway 300, etc., and are arranged in the middle of the conveying path 1.

[0022] Fig. 2 is a schematic perspective view of a conventional transport route in which an open channel portion is formed in the middle for the purpose of collecting mud, etc. As shown in Fig. 2, conventionally, an open channel portion 201 is provided in the middle of a transport route 1 such as an agricultural irrigation channel, and a recess 101 is formed in the bottom of the open channel portion 201 for the purpose of collecting mud, etc. However, it is not limited to the recess 101 being formed.

[0023] An embodiment of the present invention will be described with reference to Figs. 3A to 13. Fig. 3A is a schematic diagram showing a top view of a supply / discharge device near a road and a bag body installed in a box below a manhole on a road according to an embodiment of the present invention. As shown in Fig. 3A, a conveying path blocking device 100 is installed in the conventional configuration shown in Fig. 1. The conveying path blocking device 100 is configured by connecting a supply / discharge device 7 and a bag body 2 with a hose 4, and the supply / discharge device 7 is configured with a compressed gas cylinder 5 and a sending / discharging machine 6 and is installed on the roadside 301 of a road 300. The bag body 2 is disposed in a box 10 and fixed to a fixing part 8 at the bottom of the box in a state where it is folded almost entirely. The bag body 2 can be filled with a gas or liquid that can be supplied or discharged, and is connected to the compressed gas cylinder 5 of the supply / discharge device 7 and the sending / discharging machine 6 with a hose 4. The bag body 2 is preferably made of an elastic material such as rubber. The bag 2 is filled with gas or liquid from the compressed gas cylinder 5 and the discharger 6, and expanded. The bag 2 fills the box 10, applying pressure to the wall of the box 10, and the entrance of the box 10 of the conveying path 1 is opened. Closing This blocks the flow from the upstream (right side of the arrow) of the transport path 1. Details will be described later.

[0024] FIG. 3B is a schematic diagram showing a top view of a configuration in which a supply / discharge device is installed near a road and a bag body is fixed to a fixing part at the bottom of an open culvert part in the middle of a conveying path according to an embodiment of the present invention. As shown in FIG. 3B, a conveying path blocking device 100 is installed in the conventional configuration shown in FIG. 2. The conveying path blocking device 100 is configured by connecting a supply / discharge device 7 and a bag body 2 with a hose 4, and the supply / discharge device 7 is configured with a compressed gas cylinder 5 and a sending / discharging machine 6 and is installed at a passage 301 beside the passage 300. The bag body 2 is arranged in an open culvert part 201 and is fixed to a fixing part 8 at the bottom of the open culvert part in a state where it is folded almost entirely. The bag body 2 can be filled with a gas or liquid that can be supplied or discharged, and is connected to the compressed gas cylinder 5 of the supply / discharge device 7 and the sending / discharging machine 6 with a hose 4. The bag body 2 is preferably made of an elastic material such as rubber. The bag body 2 is filled with gas or liquid from the compressed gas cylinder 5 and the sending and discharging machine 6 and expanded, and the bag body 2 fills the open channel portion 201, applies pressure to the wall surface of the open channel portion 201, and closes the entrance of the open channel portion 201 of the conveying path 1. Closing This blocks the flow from the upstream (right side of the arrow) of the transport path 1. Details will be described later.

[0025] FIG. 4A is a schematic cross-sectional view seen from the direction A shown in FIG. 3A, which explains a normal state in which the bag body is fixed and installed on a fixing part at the bottom of a box in the middle of a conveying path according to an embodiment of the present invention, and the flow from upstream is not blocked. As shown in FIG. 4A, the box 10 has a pipe 12 for passing the compressed gas cylinder 5 of the supply and discharge device 7, the hose 4 connecting the sending and discharge machine 6 and the bag body 2 under the road surface of the road 300. It is preferable that the pipe opening of the pipe 12 is above the upper end of the conveying path 1. The bag body 2 is fixed and arranged on the fixing part 8 at the bottom of the box. In addition, when not inflated, it is preferably arranged in a folded state below the lower end of the conveying path 1 in a recess 101 at the bottom so as not to obstruct the flow of the conveying path 1 in normal times, but this is not limited to this. The bag body 2 only needs to be fixed to the fixing part 8 of the box 10, and further, the fixing is not limited to the bottom, and may be fixed, for example, to the upper part. The recess 101 at the bottom is, for example, a mud puddle for the purpose of a mud guard. However, the recess 101 may not be provided, and the fixing portion 8 is not limited to being disposed in the recess 101.

[0026] FIG. 4B is a schematic cross-sectional view seen from the direction B shown in FIG. 3B, which explains a normal state in which a bag is installed at a fixing part at the bottom of an open culvert part in the middle of a conveying path according to an embodiment of the present invention and does not block the flow from upstream. As shown in FIG. 4B, in the open culvert part 201, it is desirable that the piping 12 for passing the compressed gas cylinder 5 of the supply and discharge device 7, the hose 4 connecting the sending and discharge machine 6 and the bag 2 under the road surface of the passage 300 is above the normal water level of the conveying path 1. The bag 2 is fixed and disposed at the fixing part 8 at the bottom of the open culvert part. In addition, when not inflated, it is preferably disposed in a recess 101 at the bottom in a folded state below the lower end of the conveying path 1 so as not to obstruct the flow of the conveying path 1 in normal times, but this is not limited thereto. The recess 101 at the bottom is, for example, a mud puddle for the purpose of a mud guard or the like. However, the recess 101 may not be present, and the fixing part 8 is not limited to being disposed in the recess 101.

[0027] FIG. 4C is a schematic cross-sectional view seen from the direction B shown in FIG. 3B, which explains the normal state in which the bag body is fixed and installed on the fixing part at the top of the open channel part in the middle of the conveying path according to one embodiment of the present invention and does not block the flow from the upstream. As shown in FIG. 4C, in the open channel part 201, it is desirable that the piping 12 for passing the compressed gas cylinder 5 of the supply and discharge device 7, the hose 4 connecting the sending and discharging machine 6 and the bag body 2 under the road surface of the passage 300 is above the normal water level of the conveying path 1. The bag body 2 is fixed and arranged on the fixing part 8 at the top of the open channel part. This is suitable when there is no recess 101 at the bottom. When not inflated, it is arranged in a folded state and installed so as not to obstruct the normal flow of the conveying path 1.

[0028] Fig. 5 is a schematic diagram of a top view illustrating a normal state in which the bag body is fixed and installed on a fixing part at the bottom of a box in the middle of a conveying path according to one embodiment of the present invention and the flow from upstream is not blocked. As shown in Fig. 5, when the bag body 2 is not inflated, no extra pressure is applied between the box 10 and the bag body 2, and the hose 4 is connected to the supply and discharge port 3 of the bag body 2.

[0029] In the case where the bag body is placed at the bottom of an open channel partway along the conveying path, when the bag body 2 is not inflated, no extra pressure is applied between the bag body 2 and the open channel part 201 (not shown).

[0030] Fig. 6A is a schematic diagram of a top view illustrating a state in which a bag is fixed and installed on a fixing part at the bottom of a box in the middle of a conveying path according to an embodiment of the present invention, and a flow from upstream is blocked. As shown in Fig. 6A, compressed air or gas such as carbon dioxide or liquid is rapidly filled into the bag 2 connected to the hose 4 from the compressed gas cylinder 5 and the discharge machine 6 of the supply and discharge device 7, so that the bag 2 expands and fills the box 10, and as shown by the arrow, it applies a suitable pressure to the wall surface and the entrance of the box 10 of the conveying path 1 and adheres to it, and the flow from upstream of the conveying path 1 is substantially blocked at the entrance of the box 10 of the conveying path 1.

[0031] Fig. 6B is a schematic diagram of a top view illustrating a state in which a bag body is fixed and installed on a fixing part at the bottom of an open channel part in the middle of a conveying path according to an embodiment of the present invention, and a flow from upstream is blocked. As shown in Fig. 6B, compressed air or gas such as carbon dioxide gas or liquid is rapidly filled into the bag body 2 connected by a hose 4 from a compressed gas cylinder 5 and a discharge machine 6 of a supply and discharge device 7, so that the bag body 2 expands and fills the open channel part 201, and pressurizes and adheres to the wall surface of the open channel part 201 of the conveying path 1 as shown by the arrow, and the flow from upstream of the conveying path 1 is substantially blocked by the open channel part 201 of the conveying path 1.

[0032] Fig. 6C is a schematic diagram of a top view illustrating a state in which a bag body is fixed and installed on a fixing part at the upper part of an open channel part in the middle of a conveying path according to an embodiment of the present invention, and a flow from upstream is blocked. As shown in Fig. 6C, compressed air or gas such as carbon dioxide gas or liquid is rapidly filled into the bag body 2 connected by a hose 4 from a compressed gas cylinder 5 and a discharge machine 6 of a supply and discharge device 7, so that the bag body 2 expands and fills the open channel part 201, and pressurizes and adheres to the wall surface of the open channel part 201 of the conveying path 1 as shown by the arrow, and the flow from upstream of the conveying path 1 is substantially blocked by the open channel part 201 of the conveying path 1.

[0033] Fig. 7A is a schematic cross-sectional view seen from the direction A in Fig. 6A, which illustrates a state in which a bag body is fixed and installed at a fixing part at the bottom of a box in the middle of a conveying path according to an embodiment of the present invention, and blocks the flow from upstream. As shown in Fig. 7A, the bag body 2 expands to fill the box part 10, expands up to the support part of the manhole 11, and as shown by the arrows, applies pressure to the box part 10 and the support part of the manhole 11 to make them adhere closely, and also applies a corresponding pressure to the entrance of the box part 10 of the conveying path 1, and essentially blocks the flow from upstream of the conveying path 1 at the entrance of the box part 10 of the conveying path 1.

[0034] Fig. 7B is a schematic cross-sectional view seen from the direction B shown in Fig. 6B, which explains a state in which a bag body is fixed and installed on a fixing part at the bottom of an open channel part in the middle of a conveying path according to an embodiment of the present invention, and a flow from upstream is blocked. As shown in Fig. 7B, by rapidly filling the bag body 2 connected by a hose 4 with compressed air or gas such as carbon dioxide gas from a compressed gas cylinder 5 and a discharger 6 of a supply and discharge device 7, the bag body 2 expands and fills the open channel part 201, and applies pressure to the wall surface of the conveying path 1 as shown by the arrow, thereby closely contacting the wall surface, and substantially blocking the flow from upstream of the conveying path 1. When the bag body 2 is fixed to the fixing part 8, it becomes possible to make a more stable contact.

[0035] Fig. 7C is a schematic cross-sectional view seen from the direction B shown in Fig. 6C, explaining a state in which a bag body is installed on a fixing part at the top of an open channel part in the middle of a conveying path according to an embodiment of the present invention, and a flow from the upstream is blocked. As shown in Fig. 7C, by rapidly filling the bag body 2 connected by a hose 4 with compressed air or gas such as carbon dioxide gas from a compressed gas cylinder 5 of a supply and discharge device 7 and a discharge machine 6, the bag body 2 expands and fills the open channel part 201, and pressurizes and adheres to the wall surface of the conveying path 1 as shown by the arrow, and substantially blocks the flow from the upstream of the conveying path 1. If the bag body 2 is fixed to the fixing part 8, it can be more stably adhered. It is suitable for cases where there is no recess 101 at the bottom. Alternatively, as shown in the side cross-sectional view, bag body 2b (preferably covered with an elastic material such as rubber) having a built-in shutter structure formed by connecting multiple narrow, long, and thick members capable of ensuring the desired strength into a blind-like structure may be deployed using a rope or chain by hand or with an electric device (not shown), and / or gas or liquid may be filled into bag body 2b while it is deployed, causing it to expand and apply pressure to the bottom of square section 10 to make it adhere tightly to the base of square section 10.

[0036] Fig. 8A is a schematic cross-sectional view seen from direction B in Fig. 5, illustrating a normal state in which a bag body is fixed to a fixing part at the bottom of a box in the middle of a conveying path according to one embodiment of the present invention, a guide rail is installed to guide the bag body to expand, and the flow from upstream is not blocked. As shown in Fig. 8A, two guide rails 9 parallel to each other in the vertical direction are installed on the wall surface on the upstream side of the conveying path 1 of the box 10, at an equal distance from the conveying path 1 without overlapping the conveying path 1. In order for the bag body 2 to expand and block the flow from the upstream of the conveying path 1, the guide rails 9 are at a required length beyond the upper and lower ends of the conveying path 1 and are also at a desired position.

[0037] FIG. 8B is a schematic cross-sectional view seen from the direction B shown in FIG. 5, which illustrates a normal state in which the bag body is fixed to a fixed part at the upper part of the box part in the middle of the conveying path according to one embodiment of the present invention, a guide rail is installed to guide the bag body to expand, and the flow from the upstream is not blocked. As shown in FIG. 8B, two guide rails 9 parallel to each other in the vertical direction are installed on the wall surface on the upstream side of the conveying path 1 of the box part 10, at the same distance from the conveying path 1 without overlapping the conveying path 1. In order for the bag body 2 to expand and block the flow from the upstream of the conveying path 1, the guide rails 9 are at a required length that exceeds the upper and lower ends of the conveying path 1 and are further located at a desired position. The wall surface on which the guide rails 9 are installed is preferably a wall surface facing the conveying path 1, but is not limited thereto, and the guide rails 9 are installed on any wall surface to guide the bag body to expand. It is suitable for cases where there is no recess 101 at the bottom. When not inflated, they are arranged in a folded state and installed so as not to obstruct the normal flow of the conveying path 1. Alternatively, for example, the bag 2 may be unfolded while being guided by a guide rail 9 using a rope or chain provided on the bag 2 manually or with an electric device (not shown), and / or gas or liquid may be filled into the bag 2 to expand it while the bag 2 is being unfolded. Alternatively, as shown in the side cross-sectional view, a bag 2b (preferably covered with an elastic body such as rubber) having a built-in shutter structure formed by connecting multiple members having a small width, long sides, and a thickness sufficient to ensure a desired strength into a blind shape may be unfolded and / or gas or liquid may be filled into the bag 2b while being unfolded using a rope or chain manually or with an electric device (not shown), and / or gas or liquid may be filled into the bag 2b while the bag 2 is being unfolded and / or expanded, and pressure may be applied to the bottom of the box section 10 to make it adhere to the box section 10.

[0038] Fig. 9 is a schematic cross-sectional view seen from the direction A in Fig. 6A, which explains a state in which a bag and a guide rail for guiding the bag when it expands are installed in a box in the middle of a conveying path according to an embodiment of the present invention, and the flow from the upstream is blocked. As shown in Fig. 9, compressed air or gas such as carbon dioxide or liquid is filled into the bag 2 described above in Fig. 8A connected by a hose 4 from a compressed gas cylinder 5 and a discharger 6 of a supply and discharge device 7, and the bag 2 is guided by the guide rail 9 while expanding to fill the box 10, and is pressed against the wall surface of the upstream flow path opening of the conveying path 1 to make it adhere closely, and a suitable pressure is applied to the entrance of the box 10 of the conveying path 1 as shown by the arrow, and the flow from the upstream of the conveying path 1 is substantially blocked at the entrance of the box 10 of the conveying path 1. In addition, since the bag 2 is fixed to the fixed part 8 at the bottom and guided by the guide rail 9, even if it does not expand to the manhole 11, it applies a suitable pressure to the entrance of the box 10 of the conveying path 1, and substantially blocks the flow from the upstream of the conveying path 1 at the entrance of the box 10 of the conveying path 1. Similarly, when the bag is fixed to the fixed part at the upper part of the box in the embodiment of FIG. 8B, gas or liquid is filled into the bag 2 described above in FIG. 8B connected by the hose 4, and the bag 2 is guided by the guide rail 9 while expanding to fill the box 10, and presses and adheres to the wall surface of the upstream side flow path mouth of the conveying path 1, applying a suitable pressure to the entrance of the box 10 of the conveying path 1, and substantially blocks the flow from the upstream of the conveying path 1 at the entrance of the box 10 of the conveying path 1.

[0039] As an example of an open channel part in the middle of the conveying path, two guide rails are installed in parallel in the vertical direction on at least one wall surface of the conveying path 1 of the open channel part 201 (not shown). A gas or liquid such as compressed air or carbon dioxide gas is filled into the bag body 2 connected by a hose 4 from a compressed gas cylinder 5 and a discharge machine 6 of the supply and discharge device 7, and the bag body 2 is guided by the guide rail 9 while expanding to fill the open channel part 201, and pressurizes and adheres to both walls of the open channel part 201, substantially blocking the flow from the upstream of the conveying path 1. It is more preferable that the guide rail is fixed to the fixing part 8. In order for the bag body 2 to expand and block the flow from the upstream of the conveying path 1, it is preferable that the guide rail is of a length suitable for the flow rate to be blocked and is located at a desired position (not shown).

[0040] Fig. 10A is a schematic cross-sectional view seen from the direction B shown in Fig. 6A, which explains a state in which a bag body and a plate constituting a plane that guides the bag body to the wall surface of the box when expanded are installed in a box in the middle of a conveying path according to an embodiment of the present invention, and the flow from the upstream is blocked. As shown in Fig. 9, a plate 13 is installed on the wall surface of the upstream flow path opening of the conveying path 1 of the box 10 so as to cover the conveying path 1, and the bag body 2 expands while being guided along the plane of the plate 13, fills the box 10, applies pressure to the plate 13 and adheres to it, covering the outer wall surface of the plate outline, and blocking the flow from the upstream of the conveying path 1. The plate 13 is preferably a metal mesh structure, but is not limited thereto. It may be any plate that does not obstruct the flow, has a desired lifespan, and is strong enough to withstand the pressure applied to the plate 13 when the bag body 2 expands. The installation of the plate 13 is not limited to the wall surface of the upstream flow path opening of the transport path 1 of the box 10, but may be installed on another wall surface of the box 10, and when the wall surface is not flat due to irregularities or the like, the plate 13 can prevent liquid from leaking downstream when the adhesion between the bag 2 and the wall surface is incomplete by satisfying a desired size to form a flat surface on the wall surface of a size that surrounds the irregularities of the wall surface. However, the installation of the fixing part 8 is not limited to the bottom shown in FIG. 10A, but may be installed on another wall surface, and the bag 2 may be fixed to the fixing part 8.

[0041] Fig. 10B is a schematic cross-sectional view illustrating a state in which a fixing part is installed at the top of a box in the middle of a conveying path according to an embodiment of the present invention, and a plate that forms a plane that presses and guides the bag body against the wall of the box when it expands is installed, blocking the flow from the upstream. As shown in Fig. 10B, compared to Fig. 10A, a fixing part 8 is installed at the top of the box 10, and a plate 13 is installed on the wall of the upstream flow path opening of the conveying path 1 of the box 10 so as to cover the conveying path 1. The bag body 2 expands while being guided along the plane of the plate 13, fills the box 10, applies pressure to the plate 13, and comes into close contact with it, covering the outer wall surface of the plate outline, blocking the flow from the upstream of the conveying path 1. Alternatively, as shown in the side cross-sectional view, bag body 2b (preferably covered with an elastic material such as rubber) having a built-in shutter structure formed by connecting multiple narrow, long, and thick members capable of ensuring the desired strength into a blind-like structure may be deployed using a rope or chain by hand or with an electric device (not shown), and / or gas or liquid may be filled into bag body 2b while it is deployed, causing it to expand and apply pressure to the bottom of square section 10 to make it adhere tightly to the base of square section 10.

[0042] As another embodiment of the open channel part in the middle of the conveying path, a plate 13 is installed on the wall surface of the open channel part 201, which is sized to surround the unevenness of the wall surface of the conveying path 1, and the bag body 2 expands while being guided along the plane of the plate 13, filling the box part 10, and presses and adheres to the plate 13, covering the outer wall surface of the plate outline, blocking the flow from the upstream of the conveying path 1 (not shown). The plate 13 may have a desired lifespan and a strength that can withstand the pressure applied to the plate 13 when the bag body 2 expands. When the wall surface is not flat due to unevenness, the plate 13 is installed to meet the desired size, so that the liquid can be prevented from leaking downstream if the adhesion between the bag body 2 and the wall surface is incomplete. The fixing part 8 is not limited to the bottom, but may be installed on the top or other wall surfaces, and the bag body 2 is fixed to the fixing part 8 and installed.

[0043] FIG. 11 is a schematic cross-sectional view seen from the direction A shown in FIG. 6A to explain a normal state in which a bag having a capacity capable of forming a working space in the gap between the box and the box is installed in a box located in the middle of a conveying path according to an embodiment of the present invention, and the flow from upstream is not blocked. As shown in FIG. 11, in the box 10, a compressed gas cylinder 5 of the supply and discharge device 7, a hose 4 connecting the sending and discharge machine 6 and the bag 21 are placed under the road surface of the road 300, below the manhole 11 and above the upper end of the conveying path 1, and the bag 21 has a capacity of, for example, half that of the box 10, and is a size that allows work to be done in the box 10 even when inflated. The bag 21 is fixed by a fixing part 8. In addition, when not inflated, it is preferably placed in a recess 101 at the bottom in a folded state below the lower end of the conveying path 1 so as not to obstruct the flow of the conveying path 1 in normal times, but is not limited thereto. As shown in FIG. 11, the bag body 2 is preferably installed on the downstream side of the conveying path of the box. Instead of the fixed part 8, the bag body 2 may be fixed to the box 10. The recess 101 at the bottom is, for example, a mud puddle for the purpose of mud protection. However, the installation of the fixed part 8 is not limited to the recess 101 illustrated in FIG. 11, and it may be installed at the bottom, upper part, or other wall surface when there is no recess 101, and the bag body 2 is fixed to the fixed part 8. Furthermore, as shown in FIG. 11, a submersible pump 30 and a drain pipe 31 may be installed using the space as a working space. The drain pipe 31 may be a pipe that passes under the road surface separately from the pipe 12, or the hose 4 and the drain pipe 31 may be passed through the same pipe 12.

[0044] FIG. 12 is a schematic cross-sectional view seen from the direction A in FIG. 6A, which explains a state in which a bag body of a size that creates a space as a working space when expanded is installed in a box part in the middle of a conveying path according to an embodiment of the present invention, and blocks the flow from the upstream. As shown in FIG. 12, the bag body 21 expands to fill the box part 10, expands to the support part of the manhole 11, and as shown by the arrows, applies pressure to the box part 10, the support part of the manhole 11, and the wall surface of the box part on the downstream side of the conveying path of the box part, and adheres to the box part, and substantially blocks the flow from the upstream of the conveying path 1. Even when the bag body 21 is expanded, it is possible to inspect and check the internal condition of the box part 10. In this way, when the bag body 21 is at half capacity, it is preferable to install the bag body 21 on the downstream side of the box part 10 to receive the pressure due to the flow from the upstream, and to suppress deformation due to the pressure of the flow with the wall surface. In FIG. 12, an example in which the bag body 21 is fixed to the fixing part 8 at the bottom is described, but it is not limited to the bottom. The bag body 2 is inflated to block the flow from upstream, and the liquid accumulated in the basin is drained using a submersible pump 30 and a drainage pipe 31.

[0045] As another example of the open channel part in the middle of the conveying path, a bag body of a size that creates a space as a working space when inflated, for example, half the capacity of the open channel part 201, is fixed to a fixing part and installed (not shown). The bag body 21 is of a size that allows work to be done in the open channel part 201 even when inflated, and is placed in a bottom recess 101 in a folded state at the lower end of the conveying path 1 during normal use so as not to obstruct the flow, and the bag body 21 is fixed to the bottom of the open channel part 201 by the fixing part 8. The bottom recess 101 is, for example, a mud puddle for the purpose of mud protection. However, the recess 101 may not be present, and the fixing part 8 is not limited to being placed in the recess 101. The bag body 21 inflates to fill the open channel part 201, applies pressure to both wall surfaces of the open channel part 201 and adheres to them, and the flow from the upstream of the conveying path 1 is substantially blocked by the open channel part 201. Even when the bag body 21 is inflated, it is possible to inspect and check the internal conditions of the open channel section 201 and the transport path 1 (not shown). Although not limited to the open channel section 201, a submersible pump 30 and a drainage pipe 31 may be installed in the drainage channel. The drainage pipe 31 may be a pipe that is provided under the road surface separately from the pipe 12, or the hose 4 and the drainage pipe 31 may be passed through the same pipe 12 (not shown). The bag body 2 is inflated to block the flow from upstream, and the submersible pump 30 and the drainage pipe 31 drain the liquid and the like that has accumulated in the drainage channel.

[0046] FIG. 13 is a schematic cross-sectional view seen from the direction A shown in FIG. 6A, explaining a state in which a bag according to an embodiment of the present invention is formed of a plurality of bag bodies and blocks the flow from the upstream. As shown in FIG. 13, the bag is formed of a plurality of bag bodies 22. The bag body 22 expands to fill the manhole 10, expands to the support part of the manhole 11, and applies pressure to the manhole 10, the support part of the manhole 11, and the wall surface of the manhole on the downstream side of the conveying path as shown by the arrows, thereby substantially blocking the flow from the upstream of the conveying path 1. In addition, even when the bag body 22 is expanded, it is possible to inspect and check the internal condition of the manhole 10. In addition, the bag body 22 may be configured to further include a plurality of bands made of an elastic material such as rubber that connect the wall surface of the manhole 10 and the bag body 22, or may be configured to have individual supply and discharge ports for each of the bag bodies 22, or may be configured to have one or more supply and discharge ports for each of the plurality of bag bodies 22. In this way, when the bag body 22 is at half capacity, it is preferable to install the bag body 22 on the downstream side of the box 10 to receive the pressure due to the flow from the upstream, and to suppress deformation due to the flow pressure with the wall surface. In Fig. 13, an embodiment in which the bag body 22 is fixed to the fixing part 8 at the bottom has been described, but it is not limited to the bottom.

[0047] As another embodiment of the open channel part in the middle of the conveying path, a bag fixed to a fixing part is formed by a plurality of bag bodies, and the bag bodies 22 expand to fill the open channel part 201, and apply pressure to both walls of the open channel part 201 to make close contact, and the flow from the upstream of the conveying path 1 is substantially blocked by the open channel part 201 of the conveying path 1. Even when the bag bodies 22 are expanded, it is possible to inspect and check the internal conditions of the open channel part 201 and the conveying path 1. The bag bodies 22 may be further provided with a plurality of bands made of an elastic material such as rubber that connect the walls of the open channel part 201 and the bag bodies 22, or each of the bag bodies 22 may be provided with an individual supply and discharge port, or a plurality of the bag bodies 22 may be provided with one or more supply and discharge ports (not shown).

[0048] In any of the above-mentioned embodiments of the bag body 2, it is not limited to being fixed and installed to a fixing portion at the top or bottom of the box or open channel portion, but may be fixed and installed at any desired location in the box or open channel portion.

[0049] As described above, compressed air or gas such as carbon dioxide gas or liquid is rapidly filled into the bag 2 to expand it. Alternatively, for example, a rope or chain provided on the bag 2 may be used to deploy the bag manually or with an electric device (not shown), and / or the bag 2 may be filled with gas or liquid while being deployed to expand it. [Industrial Applicability]

[0050] As described above, according to the present invention, by always being installed in the manhole, it is possible to immediately block the flow from the upstream of the conveying route in an emergency without interfering with the conveying of liquid or gas. Furthermore, since the gas or liquid is simply supplied to the bag, there is no risk of fire, and since there are no metal moving parts, there is no need to worry about corrosion and deterioration. Furthermore, it is possible to prevent traffic obstruction on the road during work.

[0051] Depending on the amount of material supplied to the bag, it is possible to control not only the flow from the upstream of the conveying path but also the conveying amount, and it can also be applied to general maintenance of the conveying path. In this way, the present invention is effective in protecting the environment and preventing disasters, and at the same time, it significantly improves the safety and workability of civil engineering and construction work, while also significantly improving economic efficiency, and is of great benefit to various industries, and its industrial applicability is very large. [Explanation of symbols]

[0052] 1 Transport path 2, 2b bag body 3 Supply / discharge port 4 Hose 5. Compressed gas cylinders 6 Feeding and discharging machine 7 Supply / discharge device 8 Fixed part 9 Guide rail 10 Masube 11 Manhole 12 Piping 13 Plate 21 Bag body (approximately half of the square section) 22 pouch body 30 Submersible Pump 31 Drainage pipe 100 Transport path blocking device 101 Bottom recess 201 Drainage Department 300 Roads, passages 301 Roadside, passageway

Claims

1. In a hopper portion or a channel opening portion provided in the middle of a conveyance path and having a cross-section expanded from the inner cross-section of the conveyance path, a bag body that is arranged in a folded state and can be filled with a gas or liquid that can be supplied and discharged through a supply / discharge port, and a fixing portion that fixes the bag body to the hopper portion or the channel opening portion, a hose for connecting the supply / discharge port and a supply / discharge device, and / or a pipe for passing the hose for connecting the supply / discharge port and the supply / discharge device, are provided, and the hose and / or the pipe for passing the hose are passed under the road surface, A conveyance path blocking device, characterized in that when the bag body is filled with a gas or liquid through the supply / discharge port, the bag body adheres to at least the wall surface on the downstream side of the conveyance path in the hopper portion or the channel opening portion.

2. The conveyance path blocking device according to claim 1, characterized in that a guide rail for expanding the bag body while guiding it is arranged on the wall surface of the conveyance path.

3. The conveyance path blocking device according to claim 1, characterized in that a plate having a size capable of forming a plane and surrounding the unevenness of the wall surface is arranged on the wall surface of the conveyance path.

4. The conveyance path blocking device according to claim 1, characterized in that the bag body is composed of a plurality of divided small bag bodies.

5. The conveyance path blocking device according to claim 1 or claim 4, characterized in that the bag body after being filled with a gas or liquid has a bag body capacity capable of forming a working space in the gap between the bag body and the hopper portion or the channel opening portion.

6. The conveyance path blocking device according to claim 5, characterized by comprising a submersible pump, and a drainage hose of the submersible pump passed under the road surface and / or a pipe for passing the drainage hose.

7. The conveyance path blocking device according to claim 1 or claim 4, characterized in that the bag body incorporates a shutter structure formed by arranging and connecting a plurality of members having a small width, a horizontally long shape, and a thickness capable of ensuring a desired strength in a slat shape.

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