JP2742923B2 - Bending tester and bending test auxiliary machine for L-shaped retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending tester for ascertaining the bending strength of an L-shaped retaining wall and a bending test auxiliary machine dedicated to the L-shaped retaining wall.

[0002]

2. Description of the Related Art Conventionally, the bending strength of an L-shaped retaining wall 1 in which a horizontal portion 1a and a vertical portion 1b are connected via a corner portion 1c has a predetermined bending test moment. Is horizontally added above the vertical portion 1b to confirm the crack in the corner portion 1c (the same components as those in the present embodiment are denoted by the same reference numerals).

By the way, if the L-shaped retaining wall 1 is large, the position where the bending test moment is applied will be at a high point, and if the vertical portion 1b of the L-shaped retaining wall 1 is broken, the fragments may fall from above. Yes, it has the disadvantage of being very dangerous.

In order to avoid this drawback, a bending test moment is applied to the horizontal portion 1a.
Owing to its own weight, it is not possible to perform an accurate bending test.

The present invention provides a bending test machine and a bending test auxiliary machine dedicated to an L-shaped retaining wall which have solved the above problems.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

The horizontal part 1a and the vertical part 1b are connected to the corner part 1
A bending tester which presses the horizontal portion 1a of the L-shaped retaining wall 1 which is continuously provided through the horizontal direction through the vertical direction to confirm the crack of the corner portion 1c, and raises the horizontal portion 1a of the L-shaped retaining wall 1 upward. The present invention relates to a bending test machine characterized in that a lifting mechanism 2 for lifting a workpiece is provided.

A pressing portion 3 for vertically pressing the L-shaped retaining wall 1 as a test object from above, a mounting portion 4 for mounting the L-shaped retaining wall 1, and a vertical portion 1b of the L-shaped retaining wall 1. A bending test auxiliary machine dedicated to an L-shaped retaining wall attached to a bending test machine provided with a support portion 5 for supporting the inner side of the L-shaped retaining wall 1 upward, and a lifting mechanism for lifting the horizontal portion 1a of the L-shaped retaining wall 1 upward. The present invention relates to a bending test auxiliary machine dedicated to an L-shaped retaining wall, wherein the bending test auxiliary machine is provided.

The lifting mechanism 2 has an L-shaped retaining wall 1 at one end.
3. A holding portion 11 for holding the horizontal portion 1a of the L-shaped retaining wall 1, and a weight 12 for horizontalizing the horizontal portion 1a of the L-shaped retaining wall 1 is provided at the other end. The present invention relates to the bending test machine described in the item 1 or a bending test auxiliary machine dedicated to an L-shaped retaining wall.

4. A bending test machine or an L-shaped retaining wall according to claim 3, wherein a weight 12 configured to allow liquid 21 to be poured into and out of the tank 20 is employed as the weight 12 provided in the lifting mechanism 2. Pertaining to the bending test auxiliary machine.

5. A bending test machine or an L-shaped holder according to claim 1, wherein said lifting mechanism 2 can be separated and moved from an apparatus main body of the bending test machine. It relates to a bending test auxiliary machine dedicated to walls.

[0012]

According to the first aspect of the present invention, there is a lifting mechanism 2 for lifting the horizontal portion 1a of the L-shaped retaining wall 1 upward.
If a is lifted, the moment due to the weight of the horizontal portion 1a is canceled out, and an accurate bending test is performed.

According to the second aspect of the present invention, a pressing portion 3 for vertically pressing the L-shaped retaining wall 1 as a test object from above, a mounting portion 4 for mounting the L-shaped retaining wall 1, The bending test auxiliary machine provided with a supporting portion 5 for supporting the inner side of the vertical portion 1b of the L-shaped retaining wall 1 at an upper side and having a lifting mechanism 2 for lifting the horizontal portion 1a of the L-shaped retaining wall 1 upward. Attached to the testing machine, L is lifted by the lifting mechanism 2 of the bending test auxiliary machine.
The horizontal portion 1a of the shaped retaining wall 1 is lifted horizontally, and a predetermined portion of the horizontal portion 1a of the L-shaped retaining wall 1 is pressed vertically from above to perform a bending test. The operation of the lifting mechanism 2 is the same as the operation of the lifting mechanism 2 of the first aspect.

According to the third aspect of the present invention, a holding portion 11 for holding the horizontal portion 1a of the L-shaped retaining wall 1 is provided at one end of the lifting mechanism 2, and the horizontal portion 1a of the L-shaped retaining wall 1 is horizontally provided at the other end. Since the weight 12 for providing the state is provided, the horizontal portion 1a of the L-shaped retaining wall 1 can be kept horizontal by the weight 12, and the moment due to the weight of the horizontal portion 1a of the L-shaped retaining wall 1 is offset. You.

According to the fourth aspect of the present invention, since the weight 12 provided to the lifting mechanism 2 is a weight 12 configured to allow the liquid 21 to be poured into and out of the tank 20, the amount of the liquid 21 is adjusted in an analog manner. Accordingly, the horizontal portion 1a of the L-shaped retaining wall 1 can be easily and accurately maintained in a horizontal state.

That is, since the weight of the weight 12 is controlled by the amount of the liquid 21, the weight of the weight 12 can be accurately adjusted to the required weight. The weight 12 is usually a metal weight as shown in FIG. 1. When changing the weight of the weight 12, it is necessary to put or remove the weight, and when the weight 12 is heavy, the weight 12 is used. The loading and unloading becomes hard labor, and the weight adjustment becomes digital with such weights,
Fine adjustment requires fine division of the weight.

In this respect, in the present invention according to the fourth aspect, since the liquid 21 is used for the weight 12, the amount of the liquid 21 can be controlled only by pouring the liquid 21 into and out of the tank 20, so that the weight is controlled. The weight of 12 can be adjusted easily and accurately.

According to the fifth aspect of the present invention, since the lifting mechanism 2 can be separated and moved from the apparatus main body of the bending tester, workability is improved accordingly.

Since the present invention is configured as described above, it is possible to provide a bending test machine capable of safely performing an accurate bending test and a bending test auxiliary machine dedicated to an L-shaped retaining wall.

[0020]

FIG. 1 shows an embodiment of the present invention.
This will be described below.

The bending tester shown in the drawing has a mounting portion 4 for mounting an L-shaped retaining wall 1 in which a horizontal portion 1a and a vertical portion 1b as test objects are connected via a corner portion 1c. Mounting part 4
A support 7 is erected on both sides of the support 7 and the front of the support 7 (FIG. 1).
A pressing portion 3 for pressing the L-shaped retaining wall 1 as a test object vertically from above is provided in the middle right direction.

The mounting portion 4 is formed to have a lower front portion. Therefore, when the horizontal portion 1a of the L-shaped retaining wall 1 is mounted on the mounting portion 4, the horizontal portion 1a of the L-shaped retaining wall 1 is moved forward. At the same time. Further, a positioning mechanism 16 is provided behind the mounting portion 4 so as to be slidable in the front-rear direction for determining the position of the L-shaped retaining wall 1.

The H steel as the support portion 5 is installed between the right and left columns 7 and is detachably attached to the columns 7 by appropriate means. Therefore, the H steel is
To any position in the vertical direction.

In front of the positioning mechanism 16, L
An H steel 15 for supporting the shaped retaining wall 1 is provided.

The bending tester is provided with a lifting mechanism 2 for lifting the horizontal portion 1a of the L-shaped retaining wall 1 in a detachable manner. The lifting mechanism 2 is not limited to the one shown in the drawing, and may have any structure as long as it can cancel the moment due to the weight of the horizontal portion 1a of the L-shaped retaining wall 1 during the bending test.

In the illustrated lifting mechanism 2, a shaft 18 is provided between two right and left supports 8, a rotating body 9 is fixed to the shaft 18, and a wire 10 is fixed to the rotating body 9,
A holding portion 11 for holding the horizontal portion 1a is provided at the end of the connecting member 10. A moving body 13 is fixed to the rotating body 9, and a weight 12 is connected to the moving body 13 via a wire 17. Reference numeral 14 denotes a cylinder device for causing the moving body 13 to move.

As shown in FIG. 3, an outer container 22 having a tank 20 inside a wire 17 is attached to the weight 12 in addition to the metal weight as shown in FIG. The liquid 21, for example, water is injected so that

The outer container 22 may also serve as the tank 20. That is, the outer container 22 may be configured so that water can be directly injected.

The water to be injected into the tank 20 may be a hose or the like.
Connect only to the tank 20 and supply the required amount of water.
You can drain the water from 20. Specifically, for example, FIG.
As shown in the figure, the liquid intake provided in the upper part of the tank 20
Remove the cap of 23, insert a hose or the like into the tank 20, and inject water. When reducing the amount of water, water is discharged from a liquid outlet 24 provided on the lower side of the tank 20.

The lifting mechanism 2 shown in FIG. 1 is provided slidably in the front-rear direction of the bending tester.

The lifting mechanism 2 shown in FIG. 3 is configured so as to be able to be separated and moved from the main body of the bending tester in order to improve workability. Specifically, the entire lifting mechanism 2 is installed on a table 26 with wheels 25, and a jack-type fixing member 27 is provided on the lower surface of the table 26. When performing a bending test, the lifting mechanism 2 is moved to a predetermined location, and the fixing member 27 is protruded below the wheels 25 to prevent the wheels 25 from moving. When moving the lifting mechanism 2, the fixing member 27 is moved above the wheels 25. Therefore, the lifting mechanism 2 can be easily moved.
Reference numeral 28 denotes a wire winding unit for causing the moving body 13 to move.

It should be noted that the lifting mechanism 2 may be configured in a pair to lift the horizontal portion 1a of the L-shaped retaining wall 1 on both left and right sides at predetermined intervals.

Since the present embodiment is constructed as described above, the horizontal portion 1a of the L-shaped retaining wall 1 as a test object is mounted on the mounting portion 4, and the positioning mechanism 16 is appropriately adjusted to adjust the H steel 15 And the H steel as the support portion 5 is also set at an appropriate position on the column 7, and the rod 14 'of the cylinder device 14 is raised as appropriate to cause the sliding body 13 to swing upward and the rotating body 9 to rotate.
Is rotated to lower the holding portion 11, and the L-shaped retaining wall 1 is
Of the L-shaped retaining wall 1 by holding the tip of the horizontal portion 1a of the L-shaped retaining wall 1 with a weight 12 previously calculated on the raised wire 17.
To the horizontal position.

As described above, the horizontal portion 1a of the L-shaped retaining wall 1 is set in a horizontal state, and a predetermined bending test moment is added to a predetermined portion of the horizontal portion 1a by the pressing portion 3, so that the corner portion of the L-shaped retaining wall 1 is formed. A bending test is performed after confirming the crack of 1c.

At this time, the horizontal portion 1a is lifted by the lifting mechanism 2.
Is lifted upward and is in a horizontal state, so that the weight of the horizontal portion 1a does not affect the bending test, and an accurate bending test is possible in this respect. The principle of this embodiment is as shown in FIG. 2 in comparison with the prior art.

The bending test of the L-shaped retaining wall 1 according to the present embodiment is not a test that is generally performed by pressing the vertical portion 1b in the horizontal direction, and the horizontal portion 1a is pressed from above. Since the test is performed by pressing in the vertical direction, even if the L-shaped retaining wall 1 is broken, the fragments do not fall from above, and the test can be performed extremely safely in this respect.

Further, this embodiment has the following major features.

As described above, the bending test of the L-shaped retaining wall 1 has hitherto been performed by pressing the vertical portion 1b in the horizontal direction.

Therefore, those who have a general bending tester that presses the test object vertically from above need to purchase another bending tester that presses horizontally.

However, as in this embodiment, the L-shaped retaining wall 1
Instead of pressing the vertical portion 1b in the horizontal direction, instead of pressing the horizontal portion 1a in the vertical direction from above,
It is possible to use a bending tester which presses a test object which has been owned so far in a vertical direction from above.

However, when the horizontal portion 1a is pressed vertically from above, the moment due to the weight of the horizontal portion 1a becomes a problem. Unless this point is solved, it is unavoidable to perform the bending test of the L-shaped retaining wall 1 by pressing the horizontal portion 1a vertically from above.

In this regard, if the lifting mechanism 2 according to the present embodiment is employed, a bending test in which the horizontal portion 1a of the L-shaped retaining wall 1 is pressed vertically from above can be performed.

Therefore, a person who possesses a bending tester that presses vertically from above does not have to purchase a bending tester that presses horizontally, but only prepares the auxiliary machine, that is, the lifting mechanism 2. Will be. This is a practical advantage of this embodiment.

Further, in the present embodiment, if the lifting mechanism 2 shown in FIG. 3 is employed, the weight of the weight 12 can be adjusted in an analog manner, so that the horizontal portion 1a of the L-shaped retaining wall 1 can be easily and accurately adjusted. It can be kept horizontal.

That is, since the weight of the weight 12 is controlled by the amount of the liquid 21, the weight of the weight 12 can be accurately adjusted. The weight 12 is usually a metal weight as shown in FIG. 1. When changing the weight of the weight 12, it is necessary to put or remove the weight, and when the weight 12 is heavy, the weight 12 is used. The loading and unloading becomes hard labor, and the weight adjustment becomes digital with such weights,
Fine adjustment requires fine division of the weight.

In this regard, when the liquid 21 is used for the weight 12,
The control of the amount of 21 only requires pouring the liquid 21 into and out of the tank 20, so that the weight of the weight 12 can be adjusted easily and accurately.

In this embodiment, if the lifting mechanism 2 shown in FIG. 3 is employed, the lifting mechanism 2 can be separated and moved from the apparatus main body of the bending test machine. In the case of a large L-shaped retaining wall, the weight 12 must of course be made heavy. However, in such a case, the lifting mechanism 2 can be easily moved. Since the tank 20 is light), the workability is improved accordingly.

It is to be noted that, in addition to the structure of the present embodiment in which H steel as the support portion 5 is provided between the columns 7, a frame provided between the columns 7 having the support portions 5 (appropriate steel material) is provided. Such a structure may be employed.

Further, a vibration preventing device may be attached to the weight 12 so that the weight 12 provided on the lifting mechanism 2 does not shake due to vibration or the like, so that the weight accuracy of the weight 12 and the safety may be improved.

[Brief description of the drawings]

FIG. 1 is a front view of the present embodiment.

FIG. 2 is a comparison diagram between the present embodiment and a conventional technique.

FIG. 3 is a front view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 L-shaped retaining wall 1a Horizontal part 1b Vertical part 1c Corner part 2 Lifting mechanism 3 Pressing part 4 Placement part 11 Holding part 12 Weight 20 Tank 21 Liquid

Claims (5)

(57) [Claims] 1. A bending test machine for confirming a crack in a corner portion by pressing the horizontal portion of an L-shaped retaining wall having a horizontal portion and a vertical portion connected via a corner portion from a vertical direction. A bending test machine comprising a lifting mechanism for lifting a horizontal portion of a shaped retaining wall upward. 2. A pressing portion for vertically pressing an L-shaped retaining wall as a test object from above, a placing portion for placing the L-shaped retaining wall, and an inner side of the vertical portion of the L-shaped retaining wall closer to the upper side. A bending test auxiliary machine dedicated to an L-shaped retaining wall attached to a bending test machine provided with a supporting portion for supporting the L-shaped retaining wall, wherein a lifting mechanism for lifting a horizontal portion of the L-shaped retaining wall upward is provided. Bending test auxiliary machine for L-shaped retaining wall. 3. The lifting mechanism has a holding portion at one end for holding the horizontal portion of the L-shaped retaining wall, and a weight at the other end for leveling the horizontal portion of the L-shaped retaining wall. The bending test machine according to any one of claims 1 and 2, or a bending test auxiliary machine dedicated to an L-shaped retaining wall. 4. A weight provided to the lifting mechanism,
The bending test machine according to claim 3, wherein a weight configured to allow liquid to be poured into and out of the tank is employed. 5. A bending test machine or an L-shape according to claim 1, wherein said lifting mechanism can be separated and moved from an apparatus main body of the bending test machine. Bending test auxiliary machine exclusively for retaining wall.