JP2005043216A - Simplified tensile test apparatus for projecting member on ditch side - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simplified tensile test apparatus for a projecting member on a ditch side, being used for checking whether the projecting member (test material to be tensioned) is installed in a desired strength condition, which is disposed so as to project to a lateral side of a ditch in order to prevent a cover (grating) set on the ditch, catch basin of the like of a road from flying or bouncing high when vehicles travel. <P>SOLUTION: The tensile test apparatus is provided with a board frame 1 with a reversed T-shaped cross section; a rotatable arm member 2 which is supported so as to be rotatable by a standing support member 6 of the board frame 1; a pull-up arm 3 which is held in the vertical direction at the top section of the rotatable arm member 2; and an attachment 4 which is engaged to the test material to be tensioned H being detachably set at the top section of the pull-up arm 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a simple tensile test device for a protruding member on a side surface of a groove, and in particular, prevents a lid installed in a U-shaped groove such as a side groove of a road or a water collecting rod from floating or jumping up when the vehicle is running. For this purpose, a member is provided on the side of the groove so as to protrude, and an engaging member (clamping plate) that engages with this protruding member (tensile material to be tested) is provided on the lid side to prevent the cover from being lifted or flipped up. The present invention relates to a simple tensile testing device for a protruding member on the side surface of a groove.

  On roads and sidewalks, U-shaped grooves such as side grooves and water collecting basins are usually provided for draining rainwater. The U-shaped groove includes a lid made of concrete or iron plate as a lid, but in recent years there are many openings and good drainage, and the U-shaped groove is clogged with dust. Grating with the advantage that it can be easily confirmed is often used. Grating is usually configured by forming a main member and transverse members in a grid pattern in the outer frame, and in the grating using angle steel for the end plate of the outer frame, the flange portion of the angle steel is formed on the upper edge of the U-shaped groove. In the grating using the flat steel for the end plate of the outer frame, it is dropped into the receiving part formed on the upper edge of the U-shaped groove and attached to be openable and closable.

  By the way, in the case of the U-shaped groove on which the grating is placed and mounted, the upper edge of the U-shaped groove to be placed usually remains concrete, and there is a considerable amount of space between the grating and the U-shaped groove. Because there is a gap, cars such as bicycles and automobiles may run on the grating, and even if people pass, they may emit a rattling sound or a rattling sound, especially in residential areas. In addition, there is a concern about the jump. In order to prevent the generation of noise, there are some with noise prevention materials such as rubber attached to the gap, but the durability is poor and the maintenance work such as replacement is difficult.

  Also, in the case of a U-shaped groove provided by dropping the grating, the receiving part is usually in the form of concrete, or an angle steel is attached to the concrete via an anchor, and between the grating and the receiving part. Since there is a considerable gap, as in the case of the grating mounted on the upper edge of the U-shaped groove, a vehicle such as a bicycle or a car runs on the grating of the U-shaped groove or a person passes. However, it may make a rattling sound, especially in residential areas, and this sound is a problem for the ears, and there is also a fear of jumping up. On the other hand, it is possible to improve this and drop the grating into the receiving part and fix it with anchor bolts and nuts. However, in this case, it can be firmly fixed and no sound is generated, but dust is removed. In some cases, it takes time to open and close, resulting in poor workability.

  Therefore, in order to solve the above-described problems, the present inventors have first made a bottom outer side between parallel main members in a grating in which a main member and a lateral member are formed in a lattice shape in an outer frame. An auxiliary member provided near the frame and having a vertical through hole, a rotary shaft rotatably provided in the through hole of the auxiliary member, and a tightening provided at the bottom end of the rotary shaft A grating (see Japanese Patent Application No. 2002-70302) comprising a plate, a concrete product main body having an opening for providing the grating, an engaging member provided on the lower inner wall of the opening, and the opening A concrete product (see Japanese Patent Application No. 2003-85727) is provided that is installed in a portion so as to be openable and closable and includes a grating having an engaging member that engages with the engaging member.

  The proposed grating includes a clamping plate (engagement member), and is provided between the engagement member and the lower surface of the main member of the grating so as to protrude from the side surface of a U-shaped groove such as a side groove or a water collecting tank. The protruding member can be sandwiched. By sandwiching in this way, the grating does not rattle with the receiving part unless the clamping is released, and it is possible to prevent the rattling and rattling noises from being generated when the vehicle is running, and the grating can be received. It can also be prevented from floating or coming off from inside the club. Further, the pinching can be easily released, and the work of removing dust and the like can be performed without any trouble. In addition, it is expected to be applied especially to roads in residential areas because it prevents noise, prevents splashing, and is easy to clean.

  However, when the grating is installed in a U-shaped groove such as a side groove or a water collecting tank as described above, a protruding member must be provided on the side surface of the U-shaped groove, but the protruding member is opened on the side surface of the concrete. In the case of a member embedded in the hole, or a member directly welded to the angle iron of the receiving part, or a member provided via a welded bolt, etc., its mounting is insufficient and it may come off during use There are concerns.

  The present invention has been made in view of the above-mentioned problems, and its purpose is that a lid (grating) installed in a side ditch or a water collecting basin of a road is lifted or jumped up by driving a car. In order to prevent this, a simple tensile test device for the protruding member on the side surface of the groove for confirming that the protruding member (tension test material) provided protruding from the side surface on the groove side is attached with a desired strength Is to provide.

  A simple tensile test apparatus for a protruding member on a groove side surface according to the present invention (Claim 1) includes a substrate frame having an inverted T-shaped cross section, and a rotating arm rotatably supported by a standing support member of the substrate frame. A member, a pulling arm that is vertically held at the tip of the rotating arm member, and an attachment that engages a tensile test material that is detachably provided at the tip of the pulling arm. is there.

  In the simple tensile test apparatus for the protruding member on the side surface of the groove, the rotating arm member is made of a pipe material, and the length of the protruding arm member from the rotating fulcrum supported rotatably to the standing support member to the pulling arm. It may have more than 3 times the length (claim 2). Further, the pulling arm may be provided with a load measuring means (claim 3).

  According to the present invention (Claim 4), a simple tensile test apparatus for a protruding member on a side surface of a groove includes a portal frame in which a leg portion is provided on a horizontal frame, and an elevating drive provided in the horizontal frame so as to be laterally movable. And a pulling arm that is vertically held by the lift driving means, and an attachment that engages with a tensile test material that is detachably provided at the tip of the pulling arm. A load measuring means is interposed.

  According to the simple tensile testing apparatus for the protruding member on the side surface of the groove according to the present invention, whether or not the protruding member provided to protrude from the side surface of the U-shaped groove such as a side groove of a road or a water collecting rod is attached with a desired strength. Can be easily confirmed. In particular, since the apparatus having the configuration of claim 1 can be easily carried and a tensile test can be easily performed, the tensile test can be easily performed at the site where the projecting member is applied to the side surface of the groove.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a simple tensile test apparatus for a protruding member on a side surface of a groove according to the present invention, in which a is a front view, b is a left side view, and c is a right side view. In the figure, 1 is a substrate frame, 2 is a rotating arm member, 3 is a pulling arm, and 4 is an attachment.

  The substrate frame 1 includes a substrate 5 made of a thick steel plate, an H-section steel 7 having one flange welded and fixed on the substrate 5 so as to be a standing support member 6, and a weld on the other flange surface. It consists of a fixed bracket 8. The substrate 5 may be a heavy steel plate having a thickness of 10 mm or more and a relatively large area. In the case of a relatively thin steel plate having a thickness of about 5 mm, the substrate 5 is configured to be attached with a weight. May be.

  The rotating arm member 2 is made of two steel pipes 9 and 10 having a diameter that allows one steel pipe 9 to be inserted into the other steel pipe 10 so that it can be expanded and contracted. It is easy to adjust or carry. The rotating arm member 2 is attached to the bracket 8 of the substrate frame 1 so that the tip of the steel pipe 10 can be rotated by bolts and nuts 12. A stopper 13 is provided at the rear end of the steel pipe 9 of the rotating arm member 2 as necessary to prevent injury to the hand when it is lowered by grasping it manually or for reducing the impact when lowered. Provided. Needless to say, the rotating arm member 2 may be a single steel pipe or bar.

  The pulling arm 3 is formed of a screw rod having screw portions 14 and 15 at least in the upper and lower portions. The pulling arm 3 is attached by loosely inserting the upper screw portion 14 into a through hole opened in the vertical direction at the distal end portion of the steel pipe 10 of the rotating arm member 2 and providing a nut 16. Note that the pulling arm 3 is maintained perpendicular to the pulling arm 3 when the pulling arm 3 is inserted into the through-hole of the rotating arm member 2 to test it.

  As shown in FIG. 2, the attachment 4 is formed of a relatively thick rectangular parallelepiped member, and a screw hole 17 that is screwed into the lower screw portion 15 of the pulling arm 3 is formed on the upper end surface of the attachment 4. In addition, a through-hole 18 that engages with a protruding member (tensile test material) H is opened through the thickness portion in the center of the surface orthogonal to the screw hole 17.

  The simple tensile test apparatus for the protruding member on the side surface of the groove having the above structure is assembled in the following manner. That is, the substrate frame 1 is placed on the ground, and the rotating arm member 2 is rotatably attached to the bracket 8 of the substrate frame 1 by the bolts and nuts 12. Next, the pulling arm 3 is loosely inserted into the through hole at the tip of the rotating arm member 2, the nut 16 is provided on the upper screw portion 14, and the attachment 4 is attached to the lower screw portion 15 for assembly. After assembling in this way, the nut 16 is rotated in accordance with the mounting depth position of the protruding member H at the test site to adjust the length to the attachment 4, and the attachment from the rotation fulcrum of the rotation arm member 2 is performed. The length L1 on the 4 side and the length L2 on the pressing side are adjusted to a ratio (L2 / L1 ≧ 3) at which the pressing load can be easily applied by inserting or extracting the steel pipe 9 into or from the steel pipe 10, and the length. The bolt 11 is tightened and fixed at the position.

  Next, the test procedure by the simple tensile test apparatus assembled in the above procedure will be described with reference to FIG. The substrate frame 1 of the simple tensile testing apparatus is placed on the ground where the U-shaped groove U indicated by a two-dotted line in FIG. 1 is embedded, and is embedded in the side surface of the U-shaped groove U in the through hole 18 of the attachment 4. The protruding member H is inserted. In this state, the push-down side (the anti-attachment 4 side) of the rotating arm member 2 is pushed down manually. If the projecting member H is wobbled by this pressing force, the welded portion is damaged, or the embedded portion is pulled out, it is determined that the defect is in effect.

  As described above, the simple tensile test device for the protruding member on the side surface of the groove according to the present invention is easy to carry to the operation site, easy to assemble, and easy to test, and is U-shaped. It is possible to check whether a reliable enforcement is performed while embedding the protruding member (tensile test material) H on the side surface of the groove U.

  In the above example, the case of a manual tensile test has been described as an example. However, the present invention is not limited to this example, and when it is desired to obtain a quantitative test measurement value, the rotating arm member 2 is used. It is possible to perform a test by providing a table on which a weight is placed on the pressed portion of the, or by hanging the weight so that the weight is not removed. In order to increase the accuracy of the test measurement value, the load may be actually measured by interposing a load cell, a spring balance, or the like (not shown) on the pull arm 3 between the attachment 4 and the nut 16.

  In the above example, the substrate frame 1 is composed of the substrate 5, the H-shaped steel 7 and the bracket 8. However, as shown in FIG. 3, the bracket 8 is welded to the upper surface of the substrate 5 at intervals. The support member 19 may be welded to the lower surface of the rotating arm member 2 so that the bracket 8 and the support member 19 can be rotatably supported. Further, as shown in FIG. 4, a support column (illustration angle iron) 20 is erected on the upper surface of the substrate 5 so that the rotation arm member 2 can be freely inserted, and the rotation arm is interposed between the support columns 20 and 20. It is good also as a structure which can provide the member 2 so that rotation is possible and a rotation fulcrum can be changed to an up-down direction. In the example of FIG. 4, the pull arm 3 is provided with a spring balance 3A, and the steel tube 9 of the rotating arm member 2 is bent in a crank shape so that the pressed end does not reach the ground even if the spring balance 3A extends.

  FIGS. 5A and 5B are explanatory views of a simple tensile test apparatus for a protruding member on a groove side surface according to another embodiment of the present invention, in which a is a front view and b is an XX cross-sectional view of a. In the figure, 21 is a portal frame, 22 is an elevating drive means, 23 is a pulling arm, 24 is an attachment, and 25 is a load cell.

  The portal frame 21 includes a lateral frame 26 and leg portions 27 at both ends thereof. The horizontal frame 26 is formed by welding two steel tubes 29 to both end surfaces of the two square tubes 28 with a gap therebetween. The leg 27 is formed by welding and fixing the substrate 31 to the lower end surface of the steel pipe 30 and the flange 32 to the upper end surface. In this example, the lateral frame 26 is placed on the upper surfaces of the flanges 32 of the two right and left leg portions 27 and fixed by bolts 33, square washers 34, and nuts 35, thereby forming the portal frame 21.

  The elevating drive means 22 employs a center ram type hydraulic jack 36, the screw shaft 37 of the hydraulic jack 36 passes through the gap between the square tubes 28 of the horizontal frame 26, and a flange 38 is provided on the lower surface of the hydraulic jack 36. It is placed on the horizontal frame 26 so as to be movable.

  The pulling arm 23 is formed of a screw rod having screw portions 39 and 40 at least in the upper and lower portions, and the load cell 25 is provided between the upper screw portion 39 and the lower screw portion 40. The pull-up arm 23 is connected to the lower end of the screw shaft 37 of the hydraulic jack 36 with an upper screw portion 39 interposed by a coupler 41.

  The attachment 24 is the same as that shown in FIG. 2 and is constituted by a relatively thick rectangular parallelepiped member. The upper end surface of the attachment 24 is screwed into the lower screw portion 40 of the lifting arm 23. A hole 17 is formed, and a through hole 18 that engages with a protruding member (tensile test material) H is formed in the center of a surface orthogonal to the screw hole 17 so as to penetrate in the thickness direction.

  The test procedure by the simple tensile test apparatus for the protruding member on the side surface of the groove having the above configuration will be described with reference to FIG. The leg portion 27 of the portal frame 21 of the simple tensile test apparatus is placed on a gantry K provided across the opening of the U-shaped groove U indicated by a two-dotted line in FIG. The protruding member H embedded in the side surface of the letter-shaped groove U is inserted. In this state, the hydraulic jack 36 is operated, and the pulling arm 23 is pulled up together with the screw shaft 37 until the load cell 25 shows a desired pulling value. If the protruding member H wobbles until the load cell 25 shows a desired pulling value by this pulling, the welded portion is damaged, or the embedded portion is pulled out, it is determined that the defect is in effect.

  5 is embedded in the side surface of the U-shaped groove U, similarly to the above-described simple tensile test device for the groove side protruding member shown in FIG. It is possible to check whether the protruding member (tensile material to be tested) H has been reliably implemented.

It is explanatory drawing of the simple tension test apparatus of the protrusion member of the groove | channel side surface which concerns on this invention, Comprising: a is a front view, b is a left view, c is a right view. It is explanatory drawing of the attachment which concerns on this invention, Comprising: a is a front view, b is a top view. It is explanatory drawing of the simple tension test apparatus of the protrusion member of the groove side surface of another embodiment of this invention, Comprising: a is a front view, b is a left view. It is explanatory drawing of the simple tension test apparatus of the protrusion member of the groove side surface of another embodiment of this invention, Comprising: a is a front view, b is a top view. It is explanatory drawing of the simple tension test apparatus of the protrusion member of the groove side surface of another embodiment of this invention, Comprising: a is a front view, b is XX sectional drawing of a.

Explanation of symbols

1: Board frame 2: Rotating arm member 3: Pulling arm 4: Attachment 5: Board 6: Upright support member 7: H-shaped steel 8: Bracket 9, 10: Steel pipe 11: Bolt 12: Bolt / nut 13: Stopper 14: Upper screw portion 15: Lower screw portion 16: Nut 17: Screw hole 18: Through hole 19: Support member 20: Post 3A: Spring balance 21: Portal frame 22: Lifting drive means 23: Lifting arm 24: Attachment 25 : Load cell 26: Horizontal frame 27: Leg part 28: Square pipe 29: Steel plate 30: Steel pipe 31: Substrate 32: Flange 33: Bolt 34: Square washer 35: Nut 36: Center ram type hydraulic jack 37: Screw shaft 38: Flange 39: Upper screw part 40: Lower screw part 41: Coupler K: Mounting base H: Protruding member U: U-shaped groove

Claims (4)

  A substrate frame having an inverted T-shaped cross section, a rotating arm member rotatably supported by a standing support member of the substrate frame, and a pulling arm held in a vertical direction at a tip portion of the rotating arm member A simple tensile testing apparatus for a protruding member on a side surface of a groove, comprising: an attachment for engaging with a tensile test material detachably provided at a distal end portion of the pulling arm.   2. The groove side surface according to claim 1, wherein the rotation arm member is made of a pipe material, and the length of the rotation arm member is at least three times as long as the length from the rotation fulcrum supported rotatably to the standing support member to the lifting arm. Simple tensile testing device for protruding members.   3. A simple tensile testing apparatus for a protruding member on a side surface of a groove according to claim 1, wherein a load measuring means is provided on the pulling arm. A portal frame having legs on the horizontal frame, an elevating drive means provided on the horizontal frame so as to be movable laterally, a pulling arm held in the vertical direction by the elevating drive means, and a tip of the pulling arm A simple tensile test apparatus for a protruding member on a side surface of a groove, characterized in that an attachment for engaging with a tensile test material detachably provided on a portion is provided, and a load measuring means is interposed in the pulling arm .