JPS6029448Y2 - Movable aqueduct bridge - Google Patents

Description

[Detailed description of the invention] This invention relates to a movable aqueduct bridge that is constructed across rivers, simple rivers, waterways, etc. and can be moved in the vertical direction.

When an irrigation canal is built across a simple river or waterway, an aqueduct bridge is generally used.

However, aqueduct bridges that span rivers are generally raised above the river in the form of gates to prevent driftwood and other objects from colliding with the bridge and causing damage when the river rises due to heavy rain or flooding. .

However, in the case of irrigation canals, etc., if they are culverts, the water will not be exposed to the sun's rays, so recently it has been considered to open them for sanitary reasons. There is a problem that it cannot be made into a gate shape like this.

This idea was created in view of the above-mentioned circumstances, and the purpose was to make the aqueduct bridge open to the public and to protect it from driftwood during heavy rains and floods.

In other words, the feature of this invention is that irrigation canals are connected to aqueduct bridges built across rivers, waterways, etc.
Water stop rubber is attached to both ends of the aqueduct in the water flow direction, on both sides and at the bottom to ensure watertightness with the irrigation canal, and the aqueduct can be easily moved up and down by a link mechanism consisting of a link lever, etc. The point is that it is configured like this.

Hereinafter, embodiments of this invention will be described in detail with reference to the drawings.

The movable waterway bridge according to this invention has irrigation channels 3 and 4 connected to a waterway bridge 2 built across a river/waterway 1, etc.
At both ends of the aqueduct bridge 2 in the water flow direction, water stop rubbers 5 and 6 are attached to both sides and the lower part to ensure water tightness with the irrigation channels 3 and 4, and one end of the aqueduct bridge 2 is attached to the dam 7A with a bearing body. The other end 10A of a link 10 fixed to a drive shaft 9 which is rotatably supported via a horizontal pin 11 is pivotally connected to the other end 10A of a link 10, which is rotatably supported via a drive shaft 9, and the other end of the aqueduct bridge 2 is attached to a dam 7B. The other end 16A of the lever 16 is pivoted by a horizontal pin 15 to the tip 14A of the link 14 attached to the bearing stand 12 via the shaft 13, and is fixed to the drive shaft 9.
is configured to be driven by the lifting drive device 17.

1 to 5 show a first embodiment of this invention, in which groove-shaped connecting ends 3A, 4A of irrigation canals 3, 4 are placed on both banks of the river 1, on the dams IA, IB, perpendicular thereto. is provided and raised, and a waterway bridge 2 is constructed so as to be movable up and down, spanning the river 1 between the groove-shaped connecting ends 3A and 4A.

These irrigation channel connection ends 3A, 4A are made narrower than the inner width of the irrigation channels 3, 4, and water stop metal fittings 18,
19 are buried, respectively, and are installed on the river dams IA and IB so as to continue with the side walls of irrigation canals 3 and 4. The outer sides of A and 7B have approximately the same width as the outer width of irrigation channels 3 and 4.

The irrigation canal connection dam 7B is set at the same height as the side walls of the irrigation canals 3 and 4, but the irrigation canal connection dam 7A is made higher than the side wall of the irrigation canal 3. A drive device 17 is installed.

The aqueduct bridge 2 is formed into a channel-shaped open channel by side walls 2A made of engineered shaped steel on both the left and right sides and a bottom part 2B welded to the lower surface of the lower flange of the engineered shaped steel, and between the upper flanges on both sides is a large number of chevrons. They are connected by a connecting member 2C made of steel, and furthermore, on the lower surface of the bottom plate 2B, there is a reinforcing member 2D made of a large number of angle irons.
is welded.

Shoes 20 made of strip-shaped plates are fixed to the lower surfaces of both ends of the aqueduct bridge 2, and side watertight rubber mounting plates 21 made of strip-shaped plates are fixed to the outer surfaces of both sides. Lower water stop rubber 6 inside
and side water stop rubber 5 are attached by metal fittings 22 and 23, respectively.

These water stop rubbers 5 and 6 come into contact with the water stop metal fittings 18 and 19 to prevent water from leaking from both ends of the aqueduct bridge 2.

The bearing body 8 is installed on the left and right dams 7A, and both ends of the drive shaft 9, which is provided above and across the aqueduct bridge 2, are pivoted to the bearing body 8, and this one shaft end 9A
The proximal end of the lever 16 is wedged to.

Further, the bearing stand 12 is installed on the left and right dams 7B,
The shaft 13 is provided above the aqueduct bridge 2 and straddles it.
Both ends of the drive shaft 13 are supported by the bearing stand 12, and the shaft 13 and the drive shaft 9 are parallel to each other and their coaxial centers are at the same height.

The drive device 17 includes a main body casing 24, a support base 26 that pivotally supports a coaxial swing shaft 25 protruding from both left and right sides of the main body casing 24, and a boss rotatably provided within the main body casing 24. A bevel gear (not shown) equipped with a pole nut on the part thereof, a rotating shaft 27 that meshes with this bevel gear and is taken out via a plurality of reduction gears, and a movable bridge lifting operation bundle 28 attached to this rotating shaft 27. It consists of a drive spindle 29 that passes through the main casing 24 and is screwed onto a pole nut.

A yoke portion 29A is provided at one end of this spindle 29.
is provided, and the tip 16A of the lever 16 fitted into this yoke portion 29A is connected via a pin 30.

In the aqueduct bridge of this invention, watertightness is usually ensured by the water-stop rubber 5°6 in the descending state (shown by the solid line in Figures 1 to 3), and therefore water in the irrigation canal 3.4 can flow through the canal without leaking. Flowing over Bridge 2.

Therefore, when the river, waterway 1, etc. increases due to heavy rain, the spindle 29 is moved in the direction indicated by arrow A in FIGS. 1 and 2 by rotating the operating bundle 28 to the right.

Therefore, since the lever 16 rotates in the direction indicated by the arrow in FIG. In the state shown by the two-dot chain line in FIG. 2, it comes into contact with the end stopper 32 of the top slab 31 provided on the irrigation channel 4 and is stopped.

In this way, the aqueduct bridge 2 can be easily and easily raised, the water from the irrigation aqueduct bridges 3 and 4 can flow into the river 1, and the driftwood can be easily raised to the aqueduct bridge 2.
collision can be prevented.

In addition, when lowering the aqueduct bridge 2, by rotating the bundle 30 in the left direction opposite to the above, the spindle 29 is moved in the direction of the arrow opening, the lever 16 is moved in the direction of the arrow 2,
The link 10 is then rotated in the direction of the arrow, allowing the aqueduct bridge 2 to be lowered.

6 to 8 show a second embodiment of this invention, in which the connection relationship between the aqueduct 2 and the irrigation channels 3 and 4 is the same as in the first embodiment, and the relationship between raising and lowering the aqueduct bridge 2 is the same as in the first embodiment. Since the only difference is the arrangement etc., the same thing as the first embodiment is as follows.
The same reference numerals are given and the explanation is omitted.

In this second embodiment, the bearing body 8 passes through the lower side wall of the dam 7A, and the drive shaft 9 disposed on the lower side of the aqueduct bridge 2 passes through it, with the end of the drive shaft protruding to one side from the side wall of the dam 7A. 9
The base end of the lever 16 is wedged to A.

The tip 16A of the lever 16 is connected to one end of a wire rope 33 wound around a winding drum 17A of a drive device, ie, a portable winch 17, installed on the top slab 31 of the dam 7A.

The tip end 10A of the link 10 wedged on the drive shaft 9 is connected via a horizontal pin 11 to a bracket 34 fixed to the lower surface of one end of the aqueduct bridge 2.

Also, a bracket 35 fixed to the lower surface of the other end of the waterway bridge 2
The shaft 1 is mounted on the bearing stand 12 installed at the inner lower part of the dam 7B.
It is connected by a horizontal pin 15 to the tip 14A of the link 14, which is attached via a horizontal pin 15.

Therefore, in this second embodiment as well, by operating the operating bundle 17B of the porta-pull winch 17 to wind up the wire rope 33, the drive shaft 9 is rotated in the direction of the arrow, and the aqueduct bridge 2 is moved to the top slab. The end stopper 32 rises while moving to the 31 side and is fixed to the top slab 31.
The cushioning material 36 attached to the aqueduct bridge 2 is stopped in the state shown by the two-dot chain line in Fig. 7.

In this way, the aqueduct bridge 2 can be simply and easily raised, the water in the irrigation canals 3 and 4 can flow into the river 1, and driftwood can be prevented from colliding with the aqueduct bridge 2.

In addition, when the aqueduct bridge 2 is lowered, the porta-pull winch 17 may be operated to rewind.

Figures 9 and 10 show a third embodiment of this invention.
Similar to the first embodiment, the aqueduct bridge 2 is suspended by the drive shaft 9 and shaft 13 that are pivotally supported at the tops of the dams 7A and 7B, and the tip 16A of the lever 16 is similar to the second embodiment. It is connected to one end of the wire rope 33 wound around the winding drum 17A of the same porta-pull winch 17,
The rest is the same as the first embodiment, so detailed explanation will be omitted.

Since the movable aqueduct bridge according to this invention has the above-mentioned configuration, it is possible to open the irrigation channel, and when the water increases due to heavy rain etc., the aqueduct bridge can be raised and positioned at a height where driftwood etc. will not collide with it. By raising the aqueduct bridge, the increased water in the irrigation canal can be released into rivers, waterways, etc., and even when the aqueduct bridge is lowered and connected to the irrigation canal, water leakage can be prevented by the waterproof rubber. The device can be raised and lowered manually using a simple drive device, and the device is simple.

[Brief explanation of the drawing]

Figures 1 to 5 show the first embodiment of this invention.
Fig. 1 is a plan view, Fig. 2 is a partially cutaway side view, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, and Fig. 4 is an enlarged cross-sectional plan view of the main part showing the side watertight structure. , Figure 5 is an enlarged longitudinal sectional side view of the main part showing the lower watertight structure, and Figures 6 to 8 are the second part of this invention.
6 is a plan view, FIG. 7 is a cross-sectional view taken along the line ■-■ in FIG. 6, FIG. 8 is a cross-sectional view taken along the line ■-■ in FIG. 7, and FIG. ~Figure 10 shows a third embodiment of this invention, with Figure 9 being a central vertical sectional side view and Figure 10 being a 9th embodiment.
It is a sectional view taken along the line XX in the figure. 1...River/waterway, etc., 2...Movable waterway bridge, 3゜4...Irrigation canal, 5,6...Water stop rubber, ? A, 7B...Weir, Death...Bearing body, 9...Drive shaft, 10...Link, 10A...Link tip, 11 ...Horizontal pin, 12...Bearing stand, 13...Link, 14A...Link tip, 15...
・Horizontal pin, 16...Lever 16A...
...Lever other end, 17... Drive device.

Claims (1)

[Scope of utility model registration request] Irrigation canals 3 and 4 are connected to a waterway bridge 2 built across a river/waterway 1, etc., and water stop rubbers 5 and 6 are attached to both ends of the waterway bridge 2 in the direction of the drift ice on both sides and the bottom. Weir 7A
A link 10 is fixed to a drive shaft 9 which is rotatably supported through a bearing body 8, and the other end 10 is attached to the link 10.
One end of the aqueduct bridge 2 is pivotally attached to A by a horizontal pin 11, and a link 14 is attached via a shaft 13 to a bearing stand 12 attached to the dam 7B. A movable aqueduct bridge whose end is pivoted by a horizontal pin 15 and whose drive device 17 is connected to the other end 16A of a lever 16 fixed to the drive shaft 9.