JPH064129U - Buckling prevention device for hanging rod type floodgate - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent buckling by supporting the suspension bar for opening and closing the door of the floodgate by supporting the middle part of the suspension bar. [Structure] The operation console 3 on which the switch 6 is mounted is attached to the pair of support columns 1,
In the sluice, in which the door body 4 supported by No. 1 and in which the hanging rod 5 is erected is opened and closed by the opening / closing device 6, the hole 12a for inserting the hanging rod 5 is provided between the operation console 3 and the door body 4. A guide rail 10 that holds a traveling roller 15 by arranging a steady rest frame 12 provided with a traveling roller 15 on the supporting column 1 so that the traveling roller 15 can be moved up and down.
And a stopper 11 at the bottom. When the door body 4 is fully opened, the steady rest frame 12 in which the suspension rod 5 is inserted is held by the column 1 via the guide rail 10 and placed on the upper end of the door body 4. When the door body 4 is lowered, the steady rest frame 12 is also lowered to support the intermediate portion of the hanging rod 5, so that the buckling of the hanging rod 5 can be prevented and the reliability of the hanging rod type floodgate is improved. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing buckling of a suspension rod type floodgate provided in a waterway leading to a downstream river.

[0002]

[Prior art]

 Conventionally, a floodgate provided in a waterway leading to a downstream river has a pair of columns standing upright on both sides of the channel, an operation platform installed across the channel between the columns, and an operation platform located between the columns. And a door body disposed below. Further, a suspension rod is erected on the upper part of the door body, penetrates the operation console and protrudes, and is connected to the drive shaft of the switch provided on the operation console. The door is opened and closed by operating the switch and moving the suspension rod upward or downward.The lift from the fully closed state to the maximum open height is the lifting rod. It is lengthened by the lifting height of the body and connected to the drive shaft.

Rack rods, spindle rods, and the like are used as the suspension rods. The rack bar is composed of a support member arranged in parallel and a plurality of pins provided at equal intervals therebetween. A gear that engages with a pin is attached to the drive shaft of the switch. Further, the spindle rod is generally formed by forming a continuous spiral screw on round steel. Using this spiral screw as a male screw, a female screw is provided on the drive shaft of the switch.

A water stop member made of rubber is attached to the door body to which the hanging rod is attached, and when the door body at the fully closed position is pressed against the pillar by water pressure, the water stop member seals the gap and closes the sluice. I am sure.

The external force applied to the hanging rod is at the time of lifting and at the time of hanging. The size of the axial section of the suspension rod is determined according to the open load, that is, the capacity of the most economically selected switchgear with an appropriate safety factor against the lifting load. On the other hand, when suspended, it is preferable that the door moves smoothly to the fully closed state, and the structure is such that the door does not get caught in the middle or deformed by the pressing force after landing.

That is, the deformable length of the hanging rod can be considered as the distance between the support points at the upper end and the lower end, and is basically the distance from the fixed point at the upper part of the door to the switch support point. Is designed to be short to prevent buckling. Furthermore, when the lift of the sluice is large, install a steady rest frame to insert the suspension rod at the height between the upper part of the door and the switch so that it will not hit the door when it is fully opened. I was shortening the distance.

[0007]

[Problems to be solved by the device]

 However, the length between the supporting points using the above steady rest frame cannot be made shorter than the size of the lift. In addition, when the compressive load when the switch is closed is large, in order to prevent buckling, the suspension rod must be made larger in cross section, and accordingly the switch capacity must be increased accordingly. An uneconomic situation is occurring. In other words, the selection of steel bars and switches is not based on the lifting load, but on the prevention of buckling of the steel bars.

An object of the present invention is to provide a buckling prevention device for a suspension rod lock, which prevents buckling of the suspension rod without increasing the size of the suspension rod or the switch more than necessary. And

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a pair of columns standing upright on both sides of a water channel, an operating platform installed between the columns, and a door body disposed below the operating platform. In a sluice that opens and closes the water channel by installing a hanging rod upright on the upper part of the body and installing an opening and closing device on the operation table to move the hanging bar up and down, between the operation table and the door body, An anti-sway frame having a hole through which a rod is inserted and provided with a running roller provided for traveling on the pillar is provided so as to be movable up and down, and a guide rail for holding the running roller on the pillar is provided. A feature is that a stopper is provided below the guide rail.

[0010]

[Action]

 Since the present invention is configured as described above, when the door body is fully opened, the steady rest frame, through which the suspension rod is inserted, is held by the column via the guide rail and placed on the upper end of the door body. When the door is lowered by driving the opening and closing mechanism, the steady rest frame also descends to the bottom of the vertical traveling path. During this time, since the lower end of the suspension rod is supported by the steady rest frame, the axis does not shift, and the distance between the two points supporting the suspension rod is shorter than the lift, so buckling is prevented. Also, when the steady rest comes into contact with the stopper, only the door body descends and the steady rest frame stops, but since the door body has already descended to most of the lift, the distance between the two points supporting the suspension rod is Short buckling can be prevented.

When the door body is raised, the load is only that load, and the door body is lifted together with the steady rest frame that is stopped by the stopper during the rise, and is stopped at the upper position of the column. Sent.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. A water gate is provided in the waterway leading to the downstream river. As shown in Fig. 5, a pair of stanchions 1 and 1 are installed on both sides of the waterway 2, and an operation console 3 is erected across the upper ends of both stanchions 1. ing. A suspension bar 5 is erected on both edges of the upper portion of a door body 4 arranged below the operation console 3, and the suspension rod 5 penetrates the operation platform 3 and a switch provided on the operation console 3. 6 drive shafts are connected.

As shown in FIGS. 1 and 2, the pair of columns 1 and 1 are provided with fixed plates 7 on the inner surfaces facing each other with a space above and below. A supporting member 8 is projected from each fixing plate 7 in the horizontal direction, and a pair of guide rails 10, 10 having a U-shaped cross section face each other with opening portions facing the supporting member 8 positioned above and below via a bracket 9. Have been welded. A stopper 11 is attached to the lower end of the guide rail 10.

Then, in front of the pair of guide rails 10, 10 arranged between the operation console 3 and the door body 4 therebelow, the steady rest frame 12 is held by the guide rail 10 and slid vertically. It is provided in. As shown in FIG. 3, two axles 14 are horizontally fixed to the base plate 13 of the steady rest frame 12 at upper and lower positions, and rotatably support traveling rollers 15 arranged on both sides. The traveling roller 15 is housed inside the U-shaped guide rail 10. Further, two support plates 16 are provided on the base plate 13 so as to horizontally project at intervals, and two roller shafts 17 are arranged between the support plates 16 to provide rollers 18. In this case, a rack rod is used as the suspension rod 5 and is inserted into a rectangular hole 12a formed by the support plates 16 and 16 and the rollers 18 and 18. When the spindle rod is used, a cylindrical member 19 is installed between the support plates 16 as shown in FIG.

Next, the operation will be described. When the sluice is fully opened, the door body 4 is stopped at the upper position of the pillar 1, and the steady rest frame 12 has the suspension rod 5 inserted and is placed on the upper surface of the door body 4. When the door body 4 descends, the steady rest frame 12 is also held by the guide rail 10 and descends by its own weight. Therefore, the upper end of the door body 4 is supported by the steady rest frame 12, so that the bending of the suspension rod 5 can be restricted and buckling can be prevented. Further, when the steady rest frame 12 is stopped by the stopper 11, the door body 4 has descended to most of the lifting height. Therefore, between the two supporting points of the hanging rod 5, that is, the upper end of the door body 4 and the steady rest. The length between the frame 12 and the frame 12 is smaller than the lifting height, and the buckling of the suspension rod 5 can be prevented. Since the problem of buckling does not occur when the door body 4 is raised, the steady rest frame 12 is raised together with the door body 4.

[0016]

[Effect of device]

 Since the present invention is configured as described above, the middle part of the suspension rod that raises and lowers the door is supported by the steady frame that is held by the guide rail, and the steady frame follows the position of the door. Therefore, the distance between the two points supporting the suspension rod becomes smaller than the lift, and buckling of the suspension rod can be prevented. As a result, it is not necessary to increase the size of the entire device, and the reliability of the suspension rod lock is improved.

[Brief description of drawings]

FIG. 1 is a front view of a buckling prevention device for a suspension rod type floodgate according to an embodiment of the present invention.

FIG. 2 is a side view of the buckling prevention device according to the embodiment.

FIG. 3 is a plan view of the buckling prevention device according to the embodiment.

FIG. 4 is a plan view of a main portion of the buckling prevention device according to the embodiment.

FIG. 5 is a front view of the hanging rod type floodgate of the embodiment.

[Explanation of symbols]

 1 prop 2 water channel 3 operation console 4 door 5 suspension rod 6 switch 10 guide rail 11 stopper 12 steady rest frame 12a hole 15 running roller

Claims (1)

[Scope of utility model registration request] 1. A pair of stanchions standing upright on both sides of the water channel, an operation platform installed between the stanchions, and a door body arranged below the operation platform, and a hanging rod is provided above the door body. In a sluice which stands upright and has an opening / closing mechanism for moving the suspension rod up and down on the operation console to open and close the water channel, a hole for inserting the suspension rod is provided between the operation console and the door body. A steady rest frame provided with a traveling roller provided for traveling on the column is provided so as to be movable up and down, a guide rail for holding the traveling roller on the column is provided, and a stopper is provided under the guide rail. A buckling prevention device for hanging rod type floodgates.