JP2003129452A - Roller gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller gate capable of preventing deterioration of a guide roller and a door stop material. SOLUTION: In this roller gate 1, the guide rollers 7, which are guided in guide grooves 6 formed vertically in side parts of respective right and left support bodies 2, are provided in a gate body 5, which is arranged ascendably/ descendably between the support bodies 2 so as to freely open/close a water channel, and both side parts of the gate body 5 in such a manner as to be paired in upper and lower positions, respectively; a supporting shaft body 11, which is provided in the side part of the gate body 5 so as to turnably support the guide roller 7, is provided by being inserted into a side wall part 5b of the gate body 5; a bearing member 16 for inserting and supporting an intermediate part of the shaft body 11 is provided movably in a stream direction; and a helical compression spring 23 for urging the shaft body 11 to a downstream side is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller gate provided as a floodgate for rivers, dams, etc., and more particularly to improvement of a guide mechanism for guide rollers.

[0002]

2. Description of the Related Art For example, a sluice gate is provided at a river mouth weir, and, for example, a roller gate is used as the sluice gate.

Conventionally, this roller gate is provided between a pair of supporting columns so that it can be raised and lowered by, for example, an elevating device, and guides provided on both sides of the gate main body on the supporting column side. The guide roller is guided in the groove.

The width of the guide groove in the front-rear direction is made slightly wider than the diameter of the guide roller, and
Door contact members (for example, H-shaped steel is used) for contacting the guide rollers to guide the guide rollers are arranged on the front and rear wall surfaces, and as the guide rollers and the door contact members, For example, stainless steel is used.

[0005]

By the way, when the gate main body is moved up and down while water pressure is applied to the gate main body, the guide roller is pressed against the door-stop member provided on the downstream side wall surface and is moved up and down. By rolling accordingly, the gate main body can be raised and lowered without hindrance.

However, when the gate main body is moved up and down while water pressure is not applied, the guide roller is not pressed against the door stop member, so that the guide roller is in contact with the door contact member. Also, the frictional force at the bearing that supports the guide roller (rotational resistance due to the friction at the bearing) becomes larger than the frictional force generated between the contact member and the guide roller rolls. Instead, it will slide up and down on the surface of the door stop.

That is, when the guide roller and the door contact member made of stainless steel slide on each other, scratches occur on the surface of the guide roller and the door contact member, and the guide roller and the door contact member are coagulated. There is a problem in that the guide rollers and the door-stopping material are worn due to wear and abrasion.

Therefore, an object of the present invention is to provide a roller gate which can prevent the guide roller and the door stop member from being worn.

[0009]

In order to solve the above-mentioned problems, a roller gate according to claim 1 of the present invention comprises a gate main body which is vertically movable between left and right support members and which can open and close a water channel. A roller gate comprising a pair of upper and lower guide rollers, which are respectively guided in guide grooves formed in the vertical direction on the side portions of the pillars, on both sides of the gate body. A support shaft body that is rotatably supported on the guide roller is provided by inserting each side wall portion of the gate body, and a bearing member that supports an intermediate part of the support shaft body can be moved in the water flow direction. And a biasing member such as a spring body for biasing the support shaft toward the downstream side.

According to the above construction, when the gate main body is moved up and down while no water pressure is applied, the guide roller presses the door stop member through the support shaft by the biasing member such as the spring. As a result, the guide roller rolls on the door-contact member as the gate body moves up and down, so that wear due to sliding contact between the door-contact member and the guide roller is prevented.

According to a third aspect of the present invention, the roller gate has a gate main body which is arranged between the left and right supporting columns so as to be able to move up and down to open and close the water channel. A roller gate having a pair of upper and lower guide rollers guided in a guide groove formed in a vertical direction on a side portion, wherein a support shaft member for rotatably supporting the guide roller is provided in the gate main body. Each side wall is rotatably provided via a bearing member, and the center of rotation of the guide roller is eccentric to the center of rotation of the support shaft member, and the support shaft member is swung at a predetermined angle. The oscillating means is provided.

According to the above construction, when the gate main body is moved up and down in the state where the water pressure is not applied, when the supporting shaft member is rotated by the predetermined angle by the swinging means, the guide is moved by the eccentric distance. The roller moves to the downstream side, the guide roller is pressed against the door contact material, and therefore the guide roller rolls on the door contact material as the gate body moves up and down. Wear due to

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A roller gate according to a first embodiment of the present invention will be described below with reference to FIGS.

This roller gate is provided as a floodgate, for example, at a river mouth weir of a river. Usually, a plurality of roller gates are provided in parallel according to the width of the river. Here, the case where only one roller gate is provided will be described.

As shown in FIGS. 1 and 2, the roller gate 1 is provided between a pair of left and right support bodies 2 so as to be able to move up and down via a wire rope 4 by an elevating device 3 such as a winding machine. In addition, a gate main body 5 having a rectangular shape in a front view and a substantially trapezoidal cross-sectional shape, and a pair of upper and lower left and right side portions of the gate main body 5 are formed on a side surface portion of each column body 2. Vertical guide groove 6
And a guide roller (also referred to as a main roller) 7 guided by

The guide groove 6 provided on the side portion of the pillar 2 has a rectangular horizontal cross section, and the side surface on the gate body 5 side is open, and the front surface of the guide groove 6 is open. Door-stopping materials (specifically, H-shaped steel is used) 8 are embedded as guide metal fittings on the side (upstream side) and the rear surface side (downstream side) so that the surfaces thereof project. . In addition, stainless steel is used for the guide roller 7 and the door stop member 8.

Each of the guide rollers 7 is shown in FIGS.
As shown in FIG. 2, the gate body 5 is rotatably attached via a bearing material (bush) 12 to a tip end portion of a support shaft body 11 that is inserted horizontally from the inside to the outside, for example. Also, the base end portion, which is the inner portion of the support shaft body 11, has the bracket portion 5 in the gate body 5 via the spherical bearing member 13.
While being supported by a, the portion of the support shaft 11 near the guide roller 7 is separated by a predetermined distance in the water flow direction (front-back direction) via a cylindrical bearing body (which may be a cylindrical support member) 14. It is movably supported.

Explaining in detail the portion of the spherical bearing member 13, a spherical portion 13a is externally fitted to the base end portion of the support shaft 11, and is fitted to the spherical portion 13a so as to be tiltable in any direction. The spherical seat 13b is provided on the bracket portion 5a side.

The tubular bearing body 14 is provided on the side end plate 5b of the gate body 5 and has a rectangular cutout portion 1.
The supporting frame member 15 having the 5a formed therein and the notch 15a are slidably arranged in the front-rear direction by a predetermined distance, and the supporting shaft body 11 is inserted and supported to have a rectangular side view (front view). The bearing member 16 and, as shown in FIG. 5, a seal member (also referred to as watertight rubber) 17 that is attached to the outer surface side of the support frame member 15 with a bolt or the like to close a gap with the bearing member 16. ing.

Further, a biasing means 21 for biasing the guide roller 7 to the downstream side (rear side) through the support shaft 11 is applied to the support shaft 11 located inward of the support frame member 15.
Is provided.

That is, as shown in FIG. 6, the urging means 21 has a holding member 2 which is externally fitted in the middle of the support shaft 11.
2 and a compression coil spring (spring body) 23 which is an urging member arranged between the pressing member 22 and the front wall plate 5c of the gate body 5. A small-diameter tubular body 24 for holding the coil spring 23 is provided on the side of the pressing member 22, and the small-diameter tubular body 2 is provided on the side of the front wall plate 5c.
There is provided a large-diameter tubular body 25 that is slidably fitted on the outer peripheral surface of the coil 4 and holds the coil spring 23.

Although the outer peripheral surface of the guide roller 7 is shown as a cylindrical surface in the drawing, it is formed in a spherical shape, for example. Of course, it may be a cylindrical surface instead of a spherical surface.

In the above-mentioned roller gate 1, when the gate is moved up and down while water pressure is applied to the front surface which is the upstream side of the gate main body 5, the gate main body 5 is naturally pressed down with a large force. Guide roller 7
Is pressed against the door stop member 8 (8A) on the downstream side. That is, the large force acting on the gate main body 5 causes the guide roller 7 to roll with respect to the door stop member 8 (8A) on the downstream side. In this case, the coil spring 23
Shrinks, and the value of δ shown in FIG. 4 becomes zero.

On the other hand, when the gate main body 5 is moved up and down while no water pressure is applied, the force in the front-rear direction is not applied to the gate main body 5, so that the biasing force of the coil spring 23 causes the pressing member 22 to move. It acts on the support shaft 11 side through. That is, since the intermediate portion of the support shaft 11 is pushed to the downstream side, the guide roller 7 is pushed by the door stop member 8 (8A) on the downstream side, so that the guide roller 7 hits the door as the gate body 5 moves up and down. Rolling on the material 8 (8A) prevents wear due to sliding contact between the door contact material 8 and the guide roller 7.

Of course, the biasing force of the coil spring 23 at this time is the rotational frictional force (friction force with the door stop member × radius of the guide roller) acting on the outer peripheral surface of the guide roller 7 by the biasing force. The rotational friction resistance force at the bearing portion (bearing material) of the guide roller 7 (friction force from the support shaft body due to the weight of the guide roller × radius of the support shaft body) is made larger.

Further, when the support shaft 11 is pressed and moved, the moving distance of the support shaft 11 in the front-rear direction is ensured so that the surface of the guide roller 7 is always in contact with the surface of the door stop member 8. That is, the movable distance δ of the bearing member 16 depends on the distance between the surfaces of the materials 8A and 8B for both doors and the guide roller 7.
Is larger than the difference γ from the outer diameter (diameter).

Next, a roller gate according to a second embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the guide roller itself is biased to the downstream side, but in the second embodiment, the gate body is biased to the downstream side. . The basic structure of the roller gate is the same as that described in the first embodiment, but will be described in the same manner.

That is, as shown in FIG. 7 and FIG.
The roller gate 51 is provided between a pair of left and right columnar bodies 52 so as to be able to move up and down via a wire rope 54 by an elevating device 53 such as a winding machine, and has a rectangular shape in a front view and a substantially sectional shape. A trapezoidal gate main body 55, and a pair of guide rollers that are arranged in a pair on the left and right sides of the gate main body 55 and that are vertically arranged, and are guided by vertical guide grooves 56 formed on the side surface of each pillar body 52. (Also referred to as a main roller) 57.

The guide groove 56 provided on the side portion of the support column 52 has a rectangular horizontal cross-section, the side surface on the gate body 55 side is open, and the front surface of the guide groove 56. Door-stop members (specifically, H-shaped steel is used) 58 are embedded as guide metal fittings on the side (upstream side) and the rear surface side (downstream side) so that the surfaces thereof project. . Of course, stainless steel is used for the guide roller 57 and the door-stop member 58.

Further, as shown in FIGS. 9 and 10, each of the guide rollers 57 has a bearing member (bush) 60 at the tip of a support shaft 59 which is horizontally inserted through the side of the gate body 55. The support shaft 59 is rotatably attached to the support shaft 59, and is movably arranged.

That is, the side wall plate 55a of the gate body 55
In the cylindrical bearing member 61 provided in the
2a is formed and a rotary shaft body 62 having a lever portion 62b protruding rearward in a predetermined direction is rotatably (rotatably) arranged, and a support shaft body 59 is inserted into the eccentric hole portion 62a. It is supported.

The center position of the eccentric hole portion 62a, that is, the rotation center a of the guide roller 57 provided on the support shaft 59 and the rotation center b of the bearing member 61 are provided at positions eccentric by a predetermined distance d. . The support shaft 59 and the rotary shaft 62 (both together referred to as a support shaft member) may be integrally formed.

At a position outside the gate body 55, the lever portion 62a of the rotary shaft 62 is swung at a predetermined angle θ, for example, 30 degrees (not limited to 30 degrees, of course). An oscillating cylinder device (oscillating means) 63 is provided.

In the swing cylinder device 63, when the rotary shaft 62, that is, the support shaft 59 is swung by, for example, 30 degrees, the rotation center a of the guide roller 57 is changed to the rotation center b of the support shaft 59. On the other hand, the guide roller 57 is moved at an angle of 30 degrees on the circumference having the eccentric distance d as a radius, and therefore each guide roller 57 is moved in the front-rear direction by the movement distance Δd [d (1-cos30)]. You can The movable distance Δd of the support shaft 59 in the horizontal direction due to the swing of the lever portion 62a is determined by the materials 58A, 5 for both doors.
It is set to be larger than the difference (γ) between the surface distance between the 8Bs and the outer diameter (diameter) of the guide roller 57.

In the roller gate 51, of course, when the gate is moved up and down while water pressure is applied to the front surface of the gate main body 55, which is the upstream side, the gate main body 5
Since 5 is pressed to the downstream side with a large force, the guide roller 57 is pressed against the door-stop member 58 (58A) on the downstream side. That is, the guide roller 57 causes the door stopper 58 (5
8A) will roll.

On the other hand, when the gate main body 55 is moved up and down while no water pressure is applied, no force is applied to the gate main body 55 in the front-rear direction, so if the gate main body 55 is moved up and down in this state. The guide roller 57 comes into contact with the door stop member 58 (58A), but if the biasing force does not act, it will not roll even if it comes into contact.

Then, by the rocking cylinder device 63,
The support shaft 59 is rotated, for example, 30 degrees. Then, the guide roller 57 moves to the downstream side by the moving distance Δd due to the eccentricity, and the guide roller 57 is pressed by the door-stop member 58 (58A) on the downstream side, and therefore the gate main body 55.
The guide roller 57 moves the door contact material 58 according to the vertical movement of the door.
Since it rolls on (58A), wear due to sliding contact between the door contact member 58 and the guide roller 57 is prevented.

Of course, as described in the first embodiment, the pressing force when the guide roller 57 comes into contact with the door contact member 58 (58A) due to the moving distance Δd is the door contact member due to this pressing force. The rotational frictional force received from 58 (58A) is the supporting shaft 59 due to the own weight of the guide roller 57.
Is larger than the rotational frictional force (based on the frictional force between the bearing material and the supporting shaft) from the.

9 and 10, only one rotating shaft 62 and one rocking cylinder device 63 are shown, but of course each guide roller 57 is shown.
Is provided for. In addition, the swing cylinder device 6
Although 3 is arranged outside the gate body 55, it may be arranged inside the gate body 55.

By the way, the suspension positions of the wire ropes 4 and 54 of the gate bodies 5 and 55 in the above respective embodiments are as follows.
The guide rollers 7 and 57 are the door stop members 8A and 58 on the downstream side.
The position is such that when the gate bodies 5 and 55 are moved to the A side, a pressing force (urging force) to the downstream side due to their own weight is generated.

However, as described above, the gate body 5,
When the pressing force due to the own weight of 55 does not act,
As shown in FIG. 12 and FIG. 12, the guide rollers 7, 57 are provided by providing the auxiliary roller members 71 that are pressed against the upstream door stop members 8B, 58B on both end plates (both sides) of the gate main bodies 5, 55. , Door stop material on the downstream side 8
A, 58A can be pressed.

The auxiliary roller member 71 has a large-diameter cylindrical body 7 projecting from the support plate 73 of the support bracket 72.
4 and a movable support 76 having a small-diameter cylindrical body 75 slidably guided in the large-diameter cylindrical body 74 at one end side,
An auxiliary roller 78, which is rotatably supported on the other end side of the movable support member 76 through a pair of brackets 77, is formed of an elastic material, and is disposed in both the cylindrical members 74 and 75 and is movably supported. A coil spring (biasing member) 79 for urging the body 76 forward (upstream side), and an opening 73 formed in the support plate 73 from one end surface of the movable support body 76.
a protruding position restricting member (for example, a bolt) that is inserted into the support bracket 72 and protrudes into the support bracket 72, and has a restricting member (for example, a nut material is used) 80 for restricting the protruding position at the tip. Material 81). That is, this auxiliary roller 78
Coil spring 79 allows upstream door stop members 8B, 58B
When the gate bodies 5 and 55, that is, the guide rollers 7 and 57, are pressed against the door contact member 8 on the downstream side.
The guide rollers 7 and 57 roll when the gate bodies 5 and 55 are lifted by being pressed against the A and 58A. In addition,
The number of auxiliary roller members 71 provided on each side end plate of the gate bodies 5 and 55 may be one or two, respectively, as required.

Further, in each of the above-described embodiments, the case where the roller gate is provided at the river weir has been described, but the roller gate can be applied to a discharge gate of a dam or a seawall.

[0044]

As described above, according to the structure of the roller gate according to the first aspect of the present invention, when the gate main body is moved up and down in the state where the water pressure is not applied, the biasing member such as the spring body is used. Since the guide roller is pressed against the door contact member via the support shaft, the guide roller rolls on the door contact member as the gate body moves up and down. Wear is prevented.

Further, according to the structure of the roller gate of the third aspect, when the gate main body is moved up and down in the state where the water pressure is not applied, the supporting shaft member is rotated at a predetermined angle by the swinging means. , The guide roller moves downstream by the eccentric distance, and the guide roller is pressed against the door-stopping material. Therefore, the guide roller rolls on the door-stopping material as the gate body moves up and down. Wear due to sliding contact between the material and the guide roller is prevented.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a roller gate according to a first embodiment of the present invention.

FIG. 2 is a schematic plan view of the roller gate.

FIG. 3 is a horizontal sectional view of a main part of the roller gate.

FIG. 4 is a view on arrow AA of FIG.

5 is an enlarged sectional view of a B part in FIG.

6 is a cross-sectional view taken along line CC of FIG.

FIG. 7 is a schematic sectional view of a roller gate according to a second embodiment of the present invention.

FIG. 8 is a schematic plan view of the roller gate.

FIG. 9 is a horizontal sectional view of an essential part of the roller gate.

FIG. 10 is a view on arrow D-D of FIG. 9;

FIG. 11 is a schematic cross-sectional view showing a modified example of the roller gate according to each embodiment of the present invention.

12 is a sectional view taken along line EE of FIG.

[Explanation of symbols]

1 Roller gate 2 prop bodies 3 lifting device 5 gate body 6 guide groove 7 Guide roller 8 door contact materials 11 Support shaft 14 Cylindrical bearing body 21 Biasing means 23 coil spring 51 Roller Gate 52 prop body 53 Lifting device 55 gate body 56 guide groove 57 Guide roller 58 Door contact material 59 Support shaft 61 Bearing member 62 rotating shaft 62b lever part 63 Swing cylinder device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Toru Ono             1-89 South Kohoku, Suminoe-ku, Osaka-shi, Osaka             Issue Hitachi Shipbuilding Co., Ltd. (72) Inventor Yu Horibe             1-89 South Kohoku, Suminoe-ku, Osaka-shi, Osaka             Issue Hitachi Shipbuilding Co., Ltd.

Claims (3)

[Claims] 1. A gate main body which is vertically movable between left and right support bodies to open and close a water channel, and guide grooves formed on both sides of the gate body in the vertical direction on the side portions of each support body. A pair of upper and lower guide rollers for guiding the guide roller, each of which is provided on a side portion of the gate body and has a support shaft for rotatably supporting the guide roller. And a biasing member for biasing the support shaft toward the downstream side, the bearing member supporting the intermediate part of the support shaft being movable in the water flow direction. And the roller gate. 2. The roller gate according to claim 1, wherein the biasing member is constituted by a spring body arranged between the support shaft body and the gate body. 3. A gate main body which is vertically movable between left and right support bodies and can open and close a water channel, and guide grooves formed on both sides of the gate body in the vertical direction on the side portions of each support body. Is a roller gate having a pair of upper and lower guide rollers, and a support shaft member for rotatably supporting the guide roller is rotatably mounted on each side wall of the gate body through a bearing member. In addition to the above, the center of rotation of the guide roller is eccentric with respect to the center of rotation of the support shaft member, and swinging means for swinging the support shaft member at a predetermined angle is provided. Roller gate to do.