JP4827488B2 - Installation method of water control door and water control door - Google Patents

Description

  The present invention relates to an installation method in the case of installing a water control door in an existing channel pipe, and to a water control door installed by this installation method.

  Conventionally, the supply amount of sewage supplied from the channel pipe to the sewage treatment facility is adjusted by a gate installed at the inflow portion of the sewage treatment facility. However, it is considered to install a water control door in the middle of the existing channel pipe as a countermeasure when the gate fails or is damaged.

  The water control door is composed of a frame-like door stop having a circulation opening, a door body that moves up and down along the door opening to open and close the circulation opening, and an opening and closing device that moves the door body up and down. (See Patent Document 1 below).

  Normally, when installing a water control door as described above in the middle of an existing sewage flow path pipe, the flow control pipe is shut off and the installation location is drained, and then the water control door is installed. During the installation period of the water control door, there is a problem that the supply of sewage to the sewage treatment facility is interrupted from the channel pipe to be constructed.

As a solution to such a problem, an uninterrupted water installation method is proposed in which a water control door is installed without stopping water (fluid) flowing in the flow path pipe (see Patent Document 2 below).
As the above-mentioned continuous water installation method, for example, as shown in (a-1) and (a-2) of FIG. 21, first, the ground of the installation location is excavated to expose a part of the channel pipe 81, and then Then, concrete is cast to form a gate chamber 82 having an open top. Thereafter, a pair of upper and lower U-shaped door frame fixing members 83 are opposed to each other so as to sandwich the flow channel pipe 81 in the gate chamber 82, and are joined with bolts and nuts, fixed to the outer periphery of the flow channel pipe 81, concrete, etc. Reinforce with.

Thereafter, as shown in (b-1) and (b-2) of FIG. 21, the flow path pipe 81 in the gate chamber 82 is cut. As a result, fluid such as sewage flowing in the flow path pipe 81 flows into the gate chamber 82 from the upstream side, and flows out to the downstream side through the gate chamber 82, so that sewage continues to flow in the gate chamber 82 at a predetermined water level. ing. In this state, as shown in FIGS. 21 (c-1) and 21 (c-2), the door frame 84 is fixed to the door frame fixing member 83 with bolts, and then the water control door 85 is attached to the door frame 84. The installation work is completed.
JP-A-6-185636 Japanese Patent No. 3606048

  However, in the above conventional type, after the flow path pipe 81 in the gate chamber 82 is cut, the door frame 84 is fixed to the door frame fixing member 83, and the operation of attaching the water control door 85 to the door frame 84 is performed by the gate. It is a diving operation in the chamber 82. For this reason, diving work is forced over a long period of time, increasing the number of dangerous and skillful work, resulting in poor work efficiency, and the cost of diving work is high, reducing the overall construction cost. There is a problem that it is difficult.

  An object of the present invention is to provide a water control door installation method and a water control door that can significantly reduce the time of diving work, improve work efficiency, and reduce costs.

In order to achieve the above object, the water control door installation method according to the first aspect of the present invention includes a water control door provided with a frame-like door stop having a circulation port and a door body that opens and closes the distribution port. An installation method for installing in a road pipe,
(A) The door stop is configured to be divided into a plurality of divided door stopper members,
(B) forming a gate chamber through which the flow path pipe passes in the middle of the flow path pipe;
(C) Among the plurality of divided door contact members, install at least a portion of the divided door contact member that is submerged in the gate chamber;
(D) The flow passage pipe in the gate chamber is cut and removed from the opening / closing path of the door body,
(E) Assembling the door stop by installing the remaining split door stop members in the gate chamber ,
(F) The door is carried into the gate chamber and attached to the door .

  According to this, by cutting the flow channel pipe in the gate chamber, water (fluid) flowing in the flow channel pipe flows out from the cut portion into the gate chamber and flows through the gate chamber to the downstream flow channel pipe. . Prior to cutting the flow channel pipe, at least the part of the door to be submerged in the gate chamber is installed in the gate chamber with no water flowing into the gate chamber. The diving work at the time can be eliminated. Further, the water control door can be installed without stopping the water flowing in the flow path pipe.

The water control door installation method according to the second aspect of the present invention is to install all the divided door contact members in the gate chamber and assemble the door stops instead of the step (c), and delete the step (e). is there.
According to the third aspect of the present invention, the water control door is installed in such a manner that when the divided door contact member is installed in the gate chamber, the divided fixing member is installed in the gate chamber and is detachably attached to the divided fixing member. The door stop is assembled by the members.

  According to this, after installing the water control door, when replacing the water control door with a new one, for example, the water control door has become old, remove the member from each split door of the old water control door from the split fixing member. Then carry it out of the gate room. Thus, the old water control door can be easily removed from the gate chamber while the split fixing member remains in the gate chamber. Thereafter, each split door contact member of the new water control door is carried into the gate chamber and attached to the split fixing member. Thereby, the door stop is installed in the gate chamber, and a new water control door can be easily replaced with a new water control door by attaching a new door body to the door stop.

The water control door according to the fourth invention is installed by the installation method described in the first invention or the second invention .
The water control door according to the fifth aspect of the invention is formed such that the distribution port is surrounded by a frame per door,
The door stop consists of a split door stop member in which the frame part is divided into two parts.
A joining means for detachably joining the two divided door contact members is provided.

  As described above, according to the present invention, before the flow path pipe is cut, at least the portion of the door to be submerged in the gate chamber is installed in the gate chamber in a state where water does not flow into the gate chamber. In addition, it is possible to eliminate the diving work when installing the split door stop member. Thereby, work efficiency can be improved and cost reduction can be achieved. Further, since the water control door can be installed without stopping the water (fluid) flowing in the flow channel pipe, the supply of water from the upstream side to the downstream side of the flow channel pipe is not interrupted.

(Embodiment 1)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, reference numeral 1 denotes an existing channel pipe such as sewage whose downstream side is connected to a sewage treatment facility, etc., which is made of a pipe having a square section made of concrete and buried in the ground. In addition, a gate chamber 2 including a bottom wall 2a, front and rear side walls 2b to 2e, and a ceiling wall 2f is formed in the middle of the channel tube 1. The ceiling wall 2f is formed with openings 3 and 4 for loading and unloading.

A water control door 10 is installed in the gate chamber 2 and is configured as follows.
As shown in FIG. 2, the water control door 10 includes a door stop 12 having a circulation port 11, a vertically movable door body 13 that opens and closes the circulation port 11, and an opening / closing device 14 that raises and lowers the door body 13. ing. As shown in FIG. 3, the door stop 12 is composed of a rectangular frame-shaped frame 15 and a pair of vertical frame bodies 16 erected on the left and right sides of the upper end of the frame 15. 15 is divided into two parts, a lower divided door contact member 17 (an example of one divided door contact member) and an H-shaped upper divided door contact member 18 (an example of the other divided door contact member). Is possible.

  Further, the upper divided door contact member 18 can be divided into an inverted concave upper frame body 19 and the vertical frame body 16. The circulation port 11 is formed surrounded by a frame body 15.

  The lower divided door contact member 17 and the upper divided door contact member 18 are detachably joined by a first joining means 21. The first joining means 21 includes one flange 22 provided at the left and right upper ends of the lower divided door contact member 17 and the other flange 23 provided at the left and right lower ends of the upper divided door contact member 18. And a plurality of reamer bolts 24 (an example of a fastening member) and nuts 25 (an example of a fastening member) that connect the flanges 22 and 23 that are vertically opposed to each other. Each of the flanges 22 and 23 is formed with a plurality of bolt holes 26 (two in FIG. 3B). Both flanges 22 and 23 are joined together, a reamer bolt 24 is inserted into each bolt hole 26 and a nut 25 is tightened, whereby both flanges 22 and 23 are fastened by the reamer bolt 24 and the nut 25, and the lower split door contact The member 17 and the upper divided door contact member 18 are connected.

  The upper frame body 19 and the vertical frame body 16 are detachably joined by a second joining means 29. The second joining means 29 includes flanges 30, 31, a reamer bolt 24, and a nut 25, similar to the first joining means 21.

  As shown in FIGS. 2 and 4, a pair of left and right guide plates 32 are detachably attached to the door stop 12 by a plurality of bolts. Thereby, a pair of left and right guide grooves 33 extending from the upper end portions of the vertical frame bodies 16 to the lower end portions of the frame body 15 are formed between the door stop 12 and the respective guide plates 32. The guide plate 32 is divided into upper and lower parts by a lower divided guide plate 32a attached to the lower divided door contact member 17 and an upper divided guide plate 32b attached to the upper divided door contact member 18. Yes.

  The door body 13 is inserted into the pair of left and right guide grooves 33 from above, and is guided by both guide grooves 33 to move up and down on the open / close path 27. In addition, on the facing surfaces of the door stop 12 and the door body 13 in the flow direction F, water blocking plates 34 and 35 that are in close contact with each other are attached with a plurality of screws or the like.

  Of these, one water stop plate 34 is divided into a lower divided water stop plate 34 a attached to the lower divided door contact member 17 and an upper divided water stop plate 34 b attached to the upper divided door contact member 18. It is divided into upper and lower parts.

  As shown in FIG. 1, the opening / closing device 14 includes a cylindrical opening / closing stand 38 installed on the ceiling wall 2 f of the gate chamber 2, a speed reducer 39 provided on the opening / closing stand 38, and an upper end of the door body 13. And an elevating spindle 40 provided between the motor and the speed reducer 39, and an elevating operation handle 41 provided in the speed reducer 39. The spindle 40 is inserted into the open / close base 38 and passes through the opening 4 of the gate chamber 2.

  As shown in FIG. 3, a plurality of installation bolt holes 43 are formed in the door stop 12. As shown in FIG. 4, a plurality of foundation bolts 44 are planted on the rear side wall 2 c of the gate chamber 2, and these foundation bolts 44 are inserted into the respective bolt holes 43 to tighten a pair of front and rear nuts 45 and 46. Thus, the door stop 12 is installed on the rear side wall 2c. A concrete 47 is placed between the door stop 12 and the rear side wall 2c.

  A lower limit stopper (not shown) that restricts the lowering of the door body 13 at the fully closed position S is provided at the lower end of the door stop 12. Further, an upper limit stopper (not shown) that restricts the rising of the door body 13 at the fully open position O is provided at the upper end portion of the door stop 12. The opening 4 is located right above the water control door 10.

Next, a method of newly installing the water control door 10 having the above configuration in the middle of the existing flow channel pipe 1 buried in the ground will be described.
(1)
First, as shown in FIG. 5, the installation place of the water control door 10 is excavated to expose the flow path pipe 1.
(2)
Next, as shown in FIG. 6, concrete is cast to form the gate chamber 2. At this time, a plurality of foundation bolts 44 are implanted in the rear side wall 2 c of the gate chamber 2.
(3)
Next, as shown in FIG. 7, the lower divided door contact member 17 to which the lower divided guide plate 32a and the lower divided water blocking plate 34a are attached in advance is carried into the gate chamber 2 from the opening 3, Temporary placement is supported by the receiving material 49. At this time, the foundation bolt 44 screwed with the nut 45 (see FIG. 4) is inserted into the bolt hole 43 of the lower split door stop member 17.
(4)
Next, as shown in FIG. 8, the upper divided door contact member 18 to which the upper divided guide plate 32 b and the upper divided water blocking plate 34 b are attached in advance is carried into the gate chamber 2 from the opening 3. Then, by joining one flange 22 of the lower divided door contact member 17 and the other flange 23 of the upper divided door contact member 18, inserting a reamer bolt 24 into each bolt hole 26 and tightening the nut 25 ( 3), the lower split door stop member 17 and the upper split door stop member 18 are connected to assemble the door stop 12. As shown in FIG. As a result, the flow path pipe 1 penetrates the circulation port 11 of the door stop 12 and a pair of left and right guide grooves 33 are formed in the door stop 12. At this time, a foundation bolt 44 screwed with a nut 45 (see FIG. 4) is inserted into the bolt hole 43 of the upper split door stop member 18.

Before the upper dividing door contact member 18 is carried into the gate chamber 2, the upper frame body 19 and the vertical frame body 16 are connected by the second joining means 29 in the factory or the like, so that the upper division member 18 is divided. The door stop member 18 is assembled.
(5)
Next, nuts 46 are screwed onto the foundation bolts 44 to adjust the degree of tightening of the nuts 45, 46, and adjust the verticality and minute position of the door stop 12. After that, as shown in FIG. 9, the concrete 47 is placed between the door stop 12 and the rear side wall 2c. As a result, the door stop 12 is installed on the rear side wall 2 c, and then the receiving material 49 is carried out from the opening 3 to the outside of the gate chamber 2.
(6)
Next, as shown in FIG. 10, the door body 13 to which the other water stop plate 35 is attached in advance is carried into the gate chamber 2 through the opening 4 and inserted into the pair of left and right guide grooves 33 in the door stop 12. . Thereby, the door body 13 is attached to the door stop 12.
(7)
Next, as shown in FIG. 11, an open / close base 38 is installed on the ceiling wall 2 f of the gate chamber 2, the spindle 40 is inserted into the gate chamber 2 through the opening 4, and the lower end of the spindle 40 is connected to the upper end of the door body 13. And the opening / closing device 14 is installed. Then, the operation handle 41 is operated to raise the door body 13 to the fully open position O.
(8)
Next, as shown in FIGS. 12 and 13, the cutting pipe 50 is used to cut the flow pipe 1 in the gate chamber 2 at two locations, and the cut short pipe portion 1 a is opened from the opening 3 to the gate chamber 2. To outside. As a result, the sewage W in the flow channel pipe 1 flows into the gate chamber 2, and the lower divided door contact member 17 of the door stop 12 is submerged, and the lower end portion of the upper divided door contact member 18 is submerged. At this time, since the door body 13 has risen to the fully open position O, the sewage W that has flowed into the gate chamber 2 from the upstream channel pipe 1 flows from the gate chamber 2 to the downstream channel pipe 1. .
(9)
Thereafter, the lower limit stopper is adjusted, the fully closed position S of the door body 13 is adjusted, the upper limit stopper is adjusted, and the fully opened position O of the door body 13 is adjusted. At this time, since the lower limit stopper is submerged, the adjustment of the lower limit stopper is a diving operation.

The configuration of the cutting device 50 used in the step (8) will be described.
As shown in FIG. 13, the cutting device 50 includes an endless wire saw 51, a travel drive device 52 that rotates the wire saw 51 at a high speed, and a plurality of pulleys 53 that guide the wire saw 51. ing. The wire saw 51 is obtained by incorporating diamond abrasive grains for cutting into a wire rope.

Hereinafter, a method of cutting the flow channel tube 1 using the cutting device 50 in the step (8) will be described.
A travel drive device 52 is installed on the ceiling wall 2 f of the gate chamber 2, and a wire saw 51 is introduced into the gate chamber 2 from the opening 3 and wound around one cut point A of the flow channel tube 1. One cut point A is set between the door body 13 and the rear side wall 2c in the flow direction F. The pulley 53 is attached to the upper surface of the flow channel pipe 1 in a pair of front and rear and a pair of left and right, and guides the wire saw 51 from the traveling drive device 52 to one cutting point A.

  By driving the traveling drive device 52 and rotating the wire saw 51 at a high speed, the flow path pipe 1 is cut from the outside at one cutting point A. Thereafter, similarly, the wire saw 51 is wound around the other cutting portion B (see FIGS. 12 (a) and 13 (a)) of the flow channel tube 1 and is rotated at a high speed, thereby the other cutting portion. In B, the channel tube 1 is cut from the outside. By cutting the flow channel pipe 1 at the cutting points A and B in this way, the cut short pipe portion 1a can be removed from the open / close path 27 of the door body 13, and the door body 13 becomes the flow path tube 1. The flow port 11 can be normally opened and closed by the door body 13 without interfering with the cut end face.

In addition, when cutting the other cutting | disconnection location B, it is not necessary to use the pulley 53. FIG.
Through the steps (1) to (9), as shown in FIG. 1, the water control door 10 can be installed without stopping the sewage W (fluid) flowing in the flow channel pipe 1. The supply of sewage W from the upstream side to the downstream side will not be interrupted.

  In addition, in the above-described steps (1) to (7), the gate chamber is formed in a state in which the sewage W does not flow into the gate chamber 2 before the flow path pipe 1 is cut in the step (8). Since the water control door 10 is installed in 2, the diving work at the time of installing the water control door 10 can be eliminated. In the step (9), it is necessary to perform a diving operation when adjusting the lower limit stopper. However, the time required for the diving operation is much shorter than that of the conventional one, and therefore the working efficiency is improved. Cost reduction can be achieved.

  Further, since the lower split door stop member 17 and the upper split door stop member 18 are connected using the reamer bolt 24 in the step (4), the lower split door stop member 17 and the upper split door stop Deviation in the front-rear and left-right directions from the member 18 can be greatly reduced. Thereby, it can prevent that a level | step difference generate | occur | produces in the junction part of the lower divided door contact member 17 and the upper divided door contact member 18, and can raise / lower the door body 13 smoothly.

  In the above embodiment, the divided door contact members 17 and 18 are carried into the gate chamber 2 from the opening 3 and the door body 13 is carried into the gate chamber 2 from the opening 4. , 18 may be carried into the gate chamber 2 through the opening 4.

In the above embodiment, in the step (3), the lower divided door contact member 17 is carried into the gate chamber 2 with the lower divided guide plate 32a and the lower divided water stop plate 34a attached in advance. In the step (4), the upper divided door contact member 18 is carried into the gate chamber 2 with the upper divided guide plate 32b and the upper divided water blocking plate 34b attached in advance. In the chamber 2, the divided guide plates 32 a and 32 b and the divided water blocking plates 34 a and 34 b may be attached to the divided door contact members 17 and 18.
(Embodiment 2)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 14 and 15, a flat buried door 58 (an example of a fixing member) is detachably attached to the back surface of the door stop 12 (that is, the surface facing the rear side wall 2 c). Yes. The buried doors 58 are formed in the same shape as the door stoppers 12, and, similarly to the door stoppers 12, the lower divided buried doors 58 a (an example of divided fixing members) and the upper divided buried doors 58 b. (An example of a divided fixing member). A plurality of bolt holes 59 for installation are formed in each of the lower and upper divided buried doors 58a and 58b.

  Each foundation bolt 44 is inserted into the bolt hole 43 of the door stop 12 and the bolt hole 59 of the buried door 58, and a pair of front and rear and middle three nuts 61 to 63 are tightened. As a result, the door stop 12 is installed on the rear side wall 2 c together with the buried door stop 58.

Hereinafter, a method of newly installing the water control door 10 having the above-described configuration in the middle of the existing flow pipe 1 will be described.
(1)
Similar to the first embodiment described above, the channel tube 1 is exposed as shown in FIG.
(2)
As in the first embodiment described above, as shown in FIG. 6, the gate chamber 2 is formed, and a plurality of foundation bolts 44 are implanted in the rear side wall 2c.
(3)
Next, as shown in FIG. 16, the lower and upper divided buried doors 58a and 58b are carried into the gate chamber 2 from the opening 3, and the bolt holes 59 of the lower and upper divided buried doors 58a and 58b. The base bolts 44 are inserted into the nuts 62 and 63, and the lower and upper divided buried doors 58a and 58b are temporarily fixed. Thereby, the buried door 58 is temporarily assembled and fixed in the gate chamber 2, and the flow path pipe 1 penetrates the opening 58 c of the buried door 58.
(4)
Next, as in the first embodiment described above, as shown in FIG. 17 (a), the lower divided door contact member 17 to which the lower divided guide plate 32a and the lower divided water blocking plate 34a are attached in advance, It is carried into the gate chamber 2 and is supported by the receiving member 49 to temporarily place the lower divided door contact member 17. Further, as shown in FIG. 17 (b), the upper divided door contact member 18 to which the upper divided guide plate 32 b and the upper divided water blocking plate 34 b are previously attached is carried into the gate chamber 2. Then, the lower split door stop member 17 and the upper split door stop member 18 are connected to assemble the door stop 12. As a result, the flow path pipe 1 penetrates the circulation port 11 of the door stop 12 and a pair of left and right guide grooves 33 are formed in the door stop 12.

At this time, each foundation bolt 44 is inserted into each bolt hole 43 of the lower and upper divided door contact members 17, 18.
(5)
Next, the back surface of the door stop 12 is brought into contact with the surface of the buried door contact 58, and the nut 61 is screwed to each foundation bolt 44. Then, the nuts 61 to 63 are turned to adjust the verticality and minute position between the door stop 12 and the buried door 58, and thereafter, as shown in FIG. Place between. As a result, the door stop 12 is installed on the rear side wall 2 c together with the buried door stop 58.
(6)
Next, similarly to the first embodiment described above, the door body 13 to which the water stop plate 35 is previously attached is inserted into the guide groove 33 and attached to the door stop 12.

  Thereafter, in the same manner as in the steps (7) to (9) of the first embodiment described above, the opening / closing device 14 is installed, and the channel tube 1 in the gate chamber 2 is cut using the cutting device 50, Adjust the lower limit stopper and the upper limit stopper.

By the above process, the water control door 10 can be installed without stopping the sewage flowing in the flow channel pipe 1, and the supply of sewage (fluid) from the upstream side to the downstream side of the flow channel pipe 1 is interrupted. Absent.
In addition, since the water control door 10 is installed in the gate chamber 2 with no sewage flowing into the gate chamber 2 before the flow channel pipe 1 is cut, the water control door 10 is installed. Diving work can be eliminated. Finally, it is necessary to perform diving work when adjusting the lower limit stopper, but the time required for this diving work can be significantly shorter than before, so that work efficiency is improved and costs are reduced. be able to.

  After the water control door 10 is installed as described above, when the water control door 10 is used for a certain number of years and the old water control door 10 is replaced with a new water control door 10, first, The flow of sewage is temporarily stopped, and the sewage in the gate chamber 2 is drained.

  Thereafter, the opening / closing device 14 is separated from the door body 13, and the door body 13 and the guide plate 32 are removed from the door stop 12 and removed to the outside of the gate chamber 2. Thereafter, as shown by phantom lines in FIG. 14, each nut 61 is removed, and the foundation bolt 44 is removed from the bolt hole 43 of the door stop 12, thereby removing the door stop 12 from the buried door stop 58, The reamer bolt 24 and the nut 25 are removed, the door stop 12 is divided into a lower divided door contact member 17 and an upper divided door contact member 18, and these divided door contact members 17 and 18 are carried out of the gate chamber 2. To do.

  This allows the door stop 12 to be easily removed without breaking the concrete 47 while leaving the buried door 58 in the gate chamber 2, so the old water control door 10 can be easily removed from the gate chamber 2. can do.

  Thereafter, in the same manner as in the step (4), the lower divided door contact member 17 and the upper divided door contact member 18 of the new water control door 10 are carried into the gate chamber 2, and the reamer bolt 24 and the nut 25 are loaded. Are used to connect the lower divided door stopper member 17 and the upper divided door stopper member 18 to assemble the door stopper 12. Next, in the same manner as in the above step (5), the base bolt 44 is inserted into each bolt hole 43 of the door stop 12, the back surface of the door stop 12 is brought into contact with the surface of the embedded door stop 58, and the nut 61 is attached. Tighten. As a result, as shown by the solid line in FIG. 14, the door stop 12 of the new water control door 10 is installed at the buried door 58. Then, the new door body 13 is attached to the door stop 12, and the door body 13 and the opening / closing device 14 are connected. Thereby, the old water control door 10 can be easily replaced with a new water control door 10.

In the second embodiment, first, in the step (3), the lower and upper divided buried doors 58a and 58b are provided in the gate chamber 2, and then in the steps (4) and (5). The lower divided door contact member 17 is attached to the lower divided buried door contact 58a, and the upper divided door contact member 18 is attached to the upper divided buried door contact 58b. The divided buried doors 58a are attached to the lower divided door stopper member 17, and the upper divided buried doors 58b are attached to the upper divided door stopper member 18. May be installed in the gate chamber 2 together with the split door stop members 17 and 18 for assembly.
(Embodiment 3)
In the first and second embodiments, as shown in FIG. 3, the door stop 12 is divided into upper and lower divided door contact members 17 and 18, but in the third embodiment, in FIG. As shown, the door stop 12 is divided into two left and right parts at the frame 15 into a left and right divided door contact member 68 and a left and right other divided door contact member 69.

  The one divided door contact member 68 and the other divided door contact member 69 are detachably joined by the first joining means 21. As in the first and second embodiments, the first joining means 21 includes one flange 22 provided at the tip of a pair of upper and lower horizontal frame portions 68a and 68b of one split door stop member 68, and the other. The other flange 23 provided at the tip of a pair of upper and lower horizontal frame portions 69a and 69b of the split door stop member 69, and a reamer bolt 24 (an example of a fastening member) for connecting the flanges 22 and 23 facing each other on the left and right. It is comprised with the nut 25 (an example of a fastening member).

In this case, it is not necessary to divide the left and right guide plates 32 vertically. Moreover, one water stop plate 34 is divided into two, not a pair of top and bottom, but a pair of left and right split water stop plates 34a and 34b.
Next, a method of newly installing the water control door 10 having the above configuration in the middle of the existing flow channel pipe 1 buried in the ground will be described.

Similarly to the steps (1) and (2) in the first embodiment described above, the flow channel pipe 1 is exposed and the foundation bolt 44 is implanted in the rear side wall 2c of the gate chamber 2.
(3)
After that, as shown in FIG. 20, the one and the other divided door contact members 68 and 69 to which the guide plate 32 and the divided water blocking plates 34 a and 34 b are attached in advance are carried into the gate chamber 2, and the receiving material 49 Support and temporarily place. At this time, the foundation bolt 44 screwed with the nut 45 (see FIG. 4) is inserted into the bolt holes 43 of the one and the other divided door contact members 68 and 69.
(4)
Next, by joining one flange 22 of one divided door contact member 68 and the other flange 23 of the other divided door contact member 69, inserting a reamer bolt 24 into each bolt hole 26 and tightening the nut 25. , Both the split door stop members 68 and 69 are connected, and the door stop 12 is assembled. Thereby, the flow path pipe 1 penetrates the circulation port 11 of the door stop 12.

Then, the same procedure as the process of (5)-(9) in Embodiment 1 mentioned above is implemented, and the water control door 10 should just be installed in the gate chamber 2. FIG.
In each of the above-described embodiments, the door body 13 and the frame body 15 of the door stop 12 are each formed in a quadrangular shape.

  In each said embodiment, although the door body 13 is raised / lowered by rotating the operation handle 41 manually, you may provide an electric motor in the opening / closing device 14, and raise / lower the door body 13 with an electric motor. When the electric motor is used in this way, position detection limit switches are provided at the fully open position O and the fully closed position S, respectively, and when the electric motor is driven and the door body 13 is raised to the fully open position O, the open side When the limit switch is switched, the motor is stopped, and when the motor is reversely driven and the door 13 is lowered to the fully closed position S, the limit switch on the closed side is switched to stop the motor. It is configured. In the step (9), the mounting positions of the open side and closed side limit switches are adjusted.

  In the first and second embodiments, the door stop 12 is vertically divided into two parts as shown in FIG. 3, and in the third embodiment, the door stopper 12 is divided into right and left parts as shown in FIG. As described above, for example, it may be divided into four parts in the vertical and horizontal directions.

  In each of the above-described embodiments, the reamer bolt 24 is used as an example of the fastening member of the first joining means 21. However, the reamer bolt 24 is not limited thereto, and an ordinary hexagon bolt or the like may be used.

  In each of the above embodiments, as shown in FIG. 11, after attaching the door body 13 to the door stop 12 and assembling the water control door 10, as shown in FIG. 12, as shown in FIG. 1 is cut, but the flow channel pipe 1 may be cut before attaching the door body 13 to the door stop 12.

  In the first and second embodiments, the lower and upper divided door contact members 17 and 18 are installed in the gate chamber 2 to assemble the door stop 12, and then the flow channel pipe 1 in the gate chamber 2 is cut. However, only the lower divided door contact member 17 that is submerged is installed in the gate chamber 2, and then the channel pipe 1 in the gate chamber 2 is cut, and then the remaining upper divided door contact member that is not submerged. The door stop 12 may be assembled by connecting 18 to the lower split door stop member 17.

  In each of the above embodiments, the flow path pipe 1 is formed in a concrete cross-sectional square, but a reinforcing bar may be put in the concrete, or a pipe other than concrete, for example, an iron pipe or the like may be used. . The cross section is not limited to a quadrangle, and may be a circle or the like.

In each of the above-described embodiments, the flow path pipe 1 through which sewage flows has been described, but a fluid other than sewage may flow.
In the second embodiment, the buried doors 58 are vertically divided into two parts. However, the buried doors 58 may be divided into right and left parts like the door stoppers 12 of the third embodiment.

It is the figure which installed the water control door in Embodiment 1 of this invention in the existing flow-path pipe, (a) is side sectional drawing, (b) is a XX arrow line view in (a), (c). These are the YY arrow directional views in (a). It is an exploded perspective view of a water control door same as the above. It is the figure of the door stop of a water control door similarly, (a) is a front view, (b) is an expansion perspective view of a junction part. It is a cross-sectional view of the right end portion of the water control door. It is a figure explaining the method of installing a water control door in an existing channel pipe, (a) is a side sectional view of a channel pipe, and (b) is a XX arrow view in (a). . It is a figure explaining the method of installing a water control door in an existing channel pipe, (a) is a side sectional view of a gate room, and (b) is an XX arrow view in (a). It is a figure explaining the method of installing a water control door in an existing channel pipe, (a) is a side view in which a lower divided door contact member is installed, and (b) is an XX arrow in (a). FIG. 4C is a view taken along the line YY in FIG. It is a figure explaining the method of installing a water control door in an existing channel pipe, (a) is a side view in which an upper divided door contact member is installed, and (b) is an XX arrow in (a). FIG. 4C is a view taken along the line YY in FIG. It is a figure explaining the method to install a water control door in an existing channel pipe, (a) is a side view which laid concrete, (b) is a XX arrow view in (a), ( c) is a view on arrow YY in (a). It is a figure explaining the method of installing a water control door in the existing flow-path pipe, (a) is a side view which attached the door body, (b) is a XX arrow view in (a), ( c) is a view on arrow YY in (a). It is a figure explaining the method of installing a water control door in an existing channel pipe, (a) is a side view to which an opening / closing device is attached, and (b) is a view taken along line XX in (a). . It is a figure explaining the method of installing a water control door in an existing channel pipe, (a) is a side view which cut the channel pipe, and (b) is a XX arrow view in (a). is there. It is a figure explaining the method of installing a water control door in an existing channel pipe, (a) is a side view of a cutting device used when cutting a channel pipe, and (b) is X in (a). FIG. It is a cross-sectional view of the right end part of the water control door in Embodiment 2 of the present invention. It is a front view per buried door of the water control door. It is a figure explaining the method to install a water control door in an existing channel pipe, (a) is a side view which attached a buried door, and (b) is an XX arrow view in (a). is there. It is a figure explaining the method of installing a water control door in an existing channel pipe, (a) is a side view in which a lower divided door contact member is installed, and (b) is an upper divided door contact member installed. FIG. It is a figure explaining the method of installing a water control door in an existing channel pipe, and is a side view which laid concrete. It is a figure of the door stop of the water control door in Embodiment 3 of this invention, (a) is a front view, (b) (c) is an expansion perspective view of a junction part. It is a figure explaining the method of installing a water control door in the existing flow-path pipe, (a) is a side view which installed the division | segmentation door stop member, (b) is a XX arrow line view in (a). It is. It is a figure explaining the method of installing the conventional water control door in the existing flow-path pipe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Channel pipe 2 Gate chamber 10 Water control door 11 Flow outlet 12 Door opening 13 Door body 15 Frame body 17 and 18 Division door contact member 21 First joining means 22 One flange 23 Other flange 24 Reamer bolt (fastening member)
25 Nut (fastening member)
27 Opening / closing path 58a, 58b Per division buried door (division fixing member)
68,69 Dividing door member

Claims (5)

An installation method for installing a water control door having a frame-shaped door stop having a circulation port and a door body for opening and closing the circulation port in an existing channel pipe,
(A) The door stop is configured to be divided into a plurality of divided door stopper members,
(B) forming a gate chamber through which the flow path pipe passes in the middle of the flow path pipe;
(C) Among the plurality of divided door contact members, install at least a portion of the divided door contact member that is submerged in the gate chamber;
(D) The flow passage pipe in the gate chamber is cut and removed from the opening / closing path of the door body,
(E) Assembling the door stop by installing the remaining split door stop members in the gate chamber,
(F) A method of installing a water control door, wherein the door body is carried into the gate chamber and attached to the door. The installation of the water control door according to claim 1, wherein instead of the step (c), all the divided door contact members are installed in the gate chamber to assemble the door stops, and the step (e) is deleted. Method. The split door stop member is installed in the gate chamber, the split fixing member is installed in the gate chamber, and the door stop is assembled by the split door stopper member detachably attached to the split fixing member. The installation method of the water control door of Claim 1 or Claim 2. A water control door, which is installed by the installation method according to claim 1 or 2 . The distribution port is formed surrounded by a frame per door,
The door stop consists of a split door stop member in which the frame part is divided into two parts.
The water control door according to claim 4, further comprising a joining means for detachably joining the divided door contact members.

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