JP2002115241A - Deformation preventing device for door stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deformation preventing device for a door stopper, preventing the mounting work for the door stopper being complicated and enabling inexpensive manufacture and accurate mounting. SOLUTION: In the mounting work for a sluice, the deformation preventing device is characteristically attached detachably to the inside space of the door stopper when the door stopper is buried for fixation in a concrete wall for mounting the sluice.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a device for preventing deformation of a door stop hardware used for fixing a door stop hardware to a concrete wall in installation work of a water gate.

[0002]

2. Description of the Related Art Water gates are provided to control the flow rate of waterways and dams. There are various types of floodgates. Generally, a concrete wall is provided in a waterway to block the flow, a water port is provided in the concrete wall, and the water port is opened and closed. In order to open and close the water inlet, the door is moved up and down along a door stop fixed on a concrete wall to adjust the flow rate. Here, the door stop hardware (or simply referred to as a door stop) is made of a steel frame, and plays a role of guiding the door body up and down. The lifting and lowering of the door body is performed by a driving device provided on an operation table with a hanging rod connected to the upper end of the door body.

[0003] Therefore, in the installation work of the sluice, it is necessary to first make a concrete wall in the water channel, and to install a door stop on the concrete wall. As a construction method for attaching a door stop to a concrete wall, there is, for example, a method disclosed in Japanese Patent Application Laid-Open No. H8-60640. FIG. 5 illustrates this method. FIG. 5A shows a front view, and FIG. 5B shows a side view. In FIG.
First, a water passage 52 is provided in the concrete wall 51,
Leg portions of a plurality of anchor bolts 53 are embedded in the concrete wall 51. On the other hand, an installation metal fitting 55 having an anchor bolt mounting hole 57 and an L-shaped metal fitting are fixed to the door stop metal 54. The door stop metal fitting 54 is placed at a position surrounding the water inlet 52 and the sealing base 5.
8 is fixed with an anchor bolt in a state where it is sandwiched.

[0004] Construction by the above-mentioned mounting method is simple, but there is a problem that it can be used only for a small and simple sluice gate due to insufficient strength. In addition, the head of the anchor bolt is often exposed from the concrete and is underwater, so that the anchor bolt is easily corroded and has a short service life. In a normal or large sluice, an installation method of burying a fixed portion of a metal fitting per door in concrete has been conventionally performed. Hereinafter, this method will be described.

FIG. 6 is a front view in which the water gate is completely mounted, and FIG. 7 is a side sectional view. FIG. 8 is a view taken in the direction of the arrow AA ′ in FIG. 6 and shows a state where the door body is removed. 6 to 8, reinforced concrete columns 61, 61 are erected on both sides of the water channel, and the columns 61, 61 are connected by an upright wall 62 and an operation console 63 is provided across the head of the columns 61, 61. A water outlet 64 is provided at the lower center of the upright wall 62. A U-shaped recess 65 is provided in the center of the inside of the columns 61, 61, and a metal stop 66 is fixed to the recess 65. As will be described later, the door stop hardware 66 has a function of moving the door 67 up and down and a function of pressing against the back surface of the door 67 to maintain watertightness. Hanging rod 6 in the center of the upper side of door body 67
8 is connected, and the hanging rod 68 is driven up and down by a driving device 69 provided above the operation table 62. The flowing water is configured to flow downstream from a water channel 70 such as a river through a flowing water port 64. Further, a seal portion is provided on the periphery of the inlet of the flowing water port 64 to prevent leakage of flowing water when fully closed.

FIG. 2 shows an example of the structure of a door stop hardware 66. In FIG. 2, a door stop hardware 10 includes a side door stop 11 that performs a guiding function provided on both sides, a metal cover 12, and an upper door stop 13 provided at an upper edge of the water passage 64. I have. The side door stop 11 is connected to the flat plate member 11c by welding or the like with the two U-shaped members 11a and 11b back to back, and a pair of side door stops 11 provided on both sides are connected by the bottom plate member 14. I have. In addition,
A groove 11d formed by the U-shaped members 11a and 11b and the flat plate member 11c serves as a guide. For this purpose, a pair of grooves 11d provided on both sides,
11d is manufactured so as to form a parallel straight line in order to smoothly move the door 67 up and down. Further, on the lower surface of the bottom plate, an I-type metal deposit 12 is fixed by welding or the like.

[0007] Installation work of the above-mentioned water gate is performed as follows. First, the part where the floodgate will be installed is excavated and gravel is laid to form the foundation ground. Concrete work for forming columns 61, standing walls 62, and the like above the foundation ground is performed. The concrete work is divided into the first phase and the second phase.
Preliminary work is rough work and does not require precision, pillar 61, standing wall 6
2. Construction of concrete structures such as the water inlet 64, the operation console 63, etc. The second construction is the work of attaching hardware per door to the concrete structure. In the first phase of construction, as shown in FIGS.
The hatched portion 72) surrounded by a dashed line in FIG. 8 is left without concrete work. 6 hardware per door in the second phase of construction
6 is placed in the mounting portion (hatched portion 72), and the metal stop 66 is fixed to the reinforcing bar projecting from the hatched portion 72 by welding or buried in concrete in the first phase of construction. The door stop hardware 66 is fixed by a certain anchor bolt. Concrete is poured onto the fixed portion to complete the installation of the metal stop 66. After the door stop metal fittings 66 are installed, the water gate mechanical devices (the door body 67, the hanging rod 68, the lifting drive device 69) are installed to complete the construction.

In the latter conventional method of mounting the door stop hardware 66 (second phase construction), the side door stops 11, 11 are mutually shifted in the front-rear direction, or the side door stop 11 is twisted and deformed. The door 67 is a guide 11d, 1
There is a problem that it is difficult to insert the door 1d, or that the lifting and lowering movement of the door 67 is hindered. Further, if the door stop is made of a thick steel material in order to prevent this, the weight becomes heavier and the handling becomes difficult and the production cost increases. In addition, if deformation is prevented by increasing the number of reinforcing bars buried in concrete, there is a problem that welding work increases accordingly and installation work becomes complicated.

[0009]

SUMMARY OF THE INVENTION The present invention has been made under the above-mentioned background, and does not require complicated installation work for door stop hardware, can be manufactured at a low manufacturing cost, and has accurate mounting. It is an object of the present invention to provide an apparatus for preventing deformation of a door stop hardware capable of performing the following.

[0010]

The present invention employs the following means to solve the above-mentioned problems. That is, claim 1
The invention described in the above is characterized in that, in the installation work of a water gate, a member for preventing deformation is detachably attached to the inside space of the metal door stop when the metal door stop is buried and fixed on a concrete wall for mounting the water gate.

According to a second aspect of the present invention, in the first aspect of the invention, the deformation preventing device comprises a steel plate for preventing deformation and a fixing portion for detachably fixing the steel plate to a door stop. The steel plate has been subjected to uneven plastic deformation to increase the strength against bending and twisting, and / or
It is characterized in that a reinforcing plate for increasing strength against bending and torsion is fixedly or detachably fixed to the steel plate.

According to a third aspect of the present invention, in the second aspect of the present invention, the plastic deformation is such that a rectangular or square convex or concave deformation is provided inside the steel plate.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the fixing portion may include:
It is characterized in that a plurality of blocks are fixed to the steel plate, and a female screw cut into the block and a screw member screwed to the female screw are provided.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the fixing portion is constituted by a jack comprising a screw and a nut, the distance between both ends of which can be adjusted to extend and contract. It is characterized by being.

[0015]

FIG. 1 is a view showing a deformation preventing device according to an embodiment of the present invention. FIG. 1A is a plan view when the present apparatus 20 is attached to a door stop hardware 10, and FIG. 1B shows a configuration example of a reinforcing plate. This will be described below with reference to FIG.
The same parts as those described in the conventional apparatus (particularly, see FIG. 2) are assigned the same numbers and their detailed explanations are omitted. FIG.
In this embodiment, the device 20 includes a reinforcing plate 21 and fixing means 22. The reinforcing plate 21 is made of a steel plate, and is subjected to plastic deformation processing in order to increase rigidity against distortion such as inward bending and torsion. This plastic deformation processing is performed, for example, in the central portion 21a.
May be deformed inward (or outward) in a convex shape, or may be deformed into another shape. In addition, 4 of the reinforcing plate 21
At the corner, a block 21b having a screw 21c cut inside is fixed by welding. Fixing bolt 2 on screw 21c
2 are screwed together and the reinforcing plate 21 is fixed to the guide portion 11d of the metal fitting 10 at the door stop.

The fixing means 22 is not limited to the above-described method. For example, a jack in which a high nut 23 and a bolt 25 are combined as shown in FIG.
As shown in FIG. 3 (B), a jack may be used in which the high nuts 24, 24 are vertically arranged and combined with a bolt 26 having a screw which is turned upside down. In addition, the reinforcing plate is not limited to the above-described one. For example, as shown in FIG. 4, a plate material 31 is further detachably fixed or fixed to the upper and lower sides of the reinforcing plate 21 to improve the torsional strength. May be.

With the above-described configuration, the present embodiment functions as follows and has an operational effect. First, the reinforcing plate 21 is firmly fixed to the door stop metal guide portion 11d by the fixing means 22 before the installation work of the door stop hardware is started. Reinforcement plate 2
After fixing 1 to the door stop hardware 10, installation work of the door stop hardware (second construction) is performed. After the installation work is completed,
After the concrete hardens and is not deformed, the fixing bolt 22 is loosened and the reinforcing plate 21 is removed. That is, when the concrete hardens after the concrete is put in, the drying speed partially varies, thereby generating a stress (or force) that causes the door stop hardware to be deformed by twisting or displacement. However, when the concrete dries and hardens, these stresses disappear. That is, it stays inside the concrete and does not appear outside. Therefore, even if the reinforcing plate 21 is subsequently removed, the metal door stop 10 is not deformed.

In this embodiment, as described above, in the installation work of the door stop hardware, the deformation preventing device is attached to and detached from the door stop hardware before and after the installation work to prevent the door stop hardware from being deformed. As a result, there is no need to manufacture the door stop hardware from a thick steel material, and it is not necessary to bury a large number of reinforcing bars and anchor bolts in concrete to prevent deformation. In addition, the advantage is obtained that the hardware can be attached to the door while keeping the correct shape.

The embodiments and examples of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the examples, and changes in design and the like may be made without departing from the gist of the present invention. Even if there is, it is included in the present invention. For example, the plastic deformation is not limited to the above. Further, the fixing means is not limited to the one described in the embodiment, and may be fixed by another method.

[0020]

As described above, according to the structure of the present invention, in the installation work of the door stop hardware, the deformation preventing device is attached to and detached from the door stop hardware before and after the work to prevent the door stop hardware from being deformed. I have. As a result, there is no need to manufacture the door stop hardware from a thick steel material, and it is not necessary to bury a large number of reinforcing bars and anchor bolts in concrete to prevent deformation. In addition, the advantage is obtained that the hardware can be attached to the door while keeping the correct shape.

[Brief description of the drawings]

FIG. 1A is a plan view of a metal door stop equipped with a deformation preventing device according to an embodiment of the present invention, and FIG. 1B is a diagram showing a shape of a steel plate of a reinforcing member.

FIG. 2 shows an example of a structure of a door stop hardware.

FIGS. 3A and 3B show another embodiment of the fixing means.

FIGS. 4A and 4B show modified examples of the reinforcing plate.

FIGS. 5A and 5B show a method of mounting a water gate of a conventional device.

FIG. 6 shows a front view of a conventional floodgate.

FIG. 7 shows a plan view of a conventional floodgate.

FIG. 8 is a view as viewed from an arrow AA ′ in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Side door contact 12 Deposit 13 Upper door contact 20 Deformation prevention device 21 Steel plate 21a Convex part (plastic deformation part) 21b Block (fixed part) 22 Bolt (screw member) 23, 24 High nut (jack) 25 Screw (jack)

Claims (5)

[Claims] 1. A door for mounting a water gate, wherein a member for preventing deformation is detachably attached to an inner space of the metal door stop when the metal door stop is buried and fixed on a concrete wall for mounting the water gate. Device for preventing deformation of hit hardware. 2. The deformation preventing device comprises a steel plate for preventing deformation and a fixing portion for detachably fixing the steel plate to a metal door stop, and the steel plate has an indentation for increasing inward strength against bending and twisting. Has undergone a plastic deformation of the shape, and / or
2. The apparatus according to claim 1, wherein a reinforcing plate for increasing strength against bending and torsion is fixedly or detachably fixed to the steel plate. 3. The apparatus according to claim 2, wherein the plastic deformation includes a rectangular or square convex or concave deformation inside the steel plate. 4. The fixing unit according to claim 1, wherein a plurality of blocks are fixed to the steel plate, and a female screw cut into the block and a screw member screwed to the female screw are provided. The device for preventing deformation of a door stop according to any one of claims 2 and 3. 5. The door according to claim 2, wherein the fixing portion is constituted by a jack composed of a screw and a nut whose distance between both ends can be adjusted so as to be stretchable. Device for preventing deformation of hit hardware.