JP4664495B2 - Groove width straightening device for groove-shaped cross-section steel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for correcting the groove width of a groove-shaped cross-section steel material represented by a U-rib (U trough-shaped rib) used for a longitudinal rib for a steel deck of a bridge.
[0002]
[Prior art]
For example, a longitudinal rib is provided on the lower surface of a steel floor plate of a bridge for reinforcement. In recent years, U ribs (U trough ribs) having a U-shaped cross section are used for the vertical ribs in order to reduce weight. And this U rib is bent according to the shape of the bridge and the like. The bending process is mainly performed by a baked bending thermal processing method, and deformation other than the intended process may be accompanied during this process.
Of the deformations, the deformation that expands or contracts the groove width of the U-shaped groove has been conventionally corrected by hitting with a hammer from the outside or inside of the groove.
[0003]
[Problems to be solved by the invention]
However, the conventional straightening method is hit with a hammer by human power, which is inefficient and has poor accuracy.
The present invention has been made to solve the above problems, and an object thereof is to provide an efficient and accurate groove width correction device for groove-shaped cross-section steel materials.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the body first invention, traveling to correct to extend the groove width of the groove-shaped cross-section steel, with roller bottom upward grooved in the longitudinal direction of the steel When the includes a contact member in contact with the steel from the inside of the slide groove in a direction substantially parallel to the groove width direction and the bottom portion with respect to the main body, and a hydraulic cylinder for sliding said contact member, said abutment The member is a groove width straightening device for a groove-shaped cross-section steel material, characterized in that the member has a wedge shape having an inclination along an inner inclination of the groove.
[0005]
The second invention is, in order to correct by reducing the groove width of the groove-shaped cross-section steel, a body running rollers on both edges of the upward grooved in the longitudinal direction of the steel material, the groove relative to the body A groove-shaped cross-section steel material, comprising: a contact member that slides in a width direction and a direction substantially parallel to the bottom portion and contacts a steel material from the outside of the groove; and a hydraulic cylinder that slides the contact member. It is a groove width straightening device.
[0006]
According to a third aspect of the present invention, there is provided a groove width correcting device for a groove-shaped cross-section steel material, wherein the two abutting members exist in the groove width direction, one is fixed to the main body, and the other is slid. .
According to a fourth aspect of the present invention, there is provided a first body that travels with a roller in a longitudinal direction of the steel material in order to extend and correct the groove width of the groove-shaped cross-section steel material, and the first body. A first abutting member that slides in the groove width direction and abuts against the steel material from the inside of the groove, and a first hydraulic cylinder that slides the first abutting member, and the abutting member is located inside the groove. A groove width expanding device having a wedge shape having a slope along the slope of the steel sheet, and the upward groove shape mounted on both edges of the upward groove shape in order to reduce and correct the groove width of the steel material. A second body that runs on both edges of the steel material with a roller in the longitudinal direction of the steel material, and slides in the groove width direction and in a direction substantially parallel to the bottom portion with respect to the second body, and comes into contact with the steel material from the outside of the groove A second abutting member and a second hydraulic cylinder for sliding the second abutting member; A groove width reduction system for a groove width correction unit of the groove-shaped cross-section steel, characterized in that it comprises a.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
One embodiment of the present invention is shown in FIGS.
The groove-shaped cross-section steel material to be corrected in this embodiment is a U trough rib having U ribs 1 that are used for vertical ribs for steel decks of bridges, that is, flanges 5 that rise on both sides of a web 3 that is a groove bottom. It is. The U-rib 1 may be bent by a baked bending heat processing method in accordance with the shape of the bridge. This bending includes bending in the plane including the web 3 of the U-rib 1 or bending with a camber that makes the surface including the web 3 itself a curved surface. In these bending processes, the U-shaped groove may be deformed such that the groove width is enlarged or reduced.
[0008]
(Configuration of the groove width expansion correction device)
The correction device 7 shown in FIGS. 1 and 2 is a device for expanding and correcting the reduced groove width.
A roller 8 that can run while contacting the web 3 inside the upward U-rib 1 is provided in the main body 9. Two pairs of rollers 8 are provided before and after the main body 9 and are manually driven by an operator.
[0009]
A guide plate 13 is horizontally supported on the main body 9 via a support portion 11, and a rail plate 15 is fixed to the center on the guide plate 13. The slide plates 17 and 19 having a U-shaped planar shape are slidably fitted in a thick portion with both the left and right sides (in the groove width direction of the U rib 1) of the rail plate 15 being sandwiched. And is arranged. Contact members 21 are provided on the slide plates 17 and 19. These abutting members 21 have a wedge shape having an inclination along the inner inclination of the flange 5 of the U-rib 1 abutted.
[0010]
Pistons (not shown) extending in the groove width direction from both ends of a hydraulic cylinder 23 provided at the center of the main body 9 are connected to the inner center of the left and right contact members 21, and slide to contact the flange 5 from the inside. Do. The hydraulic cylinder 23 is fixed to the main body by a bolt and nut 27 via a steel belt 25. The hydraulic pressure to the hydraulic cylinder 23 is supplied by a hydraulic hose 29.
[0011]
(Function)
The operator manually moves the device 7 in the longitudinal direction inside the U-rib 1, stops the device where the groove width is visually reduced, and places a gauge (not shown) on the edge of the flange 5. Then, after confirming the degree of reduction by this gauge, the hydraulic cylinder 23 is operated to slide the contact member 21 from the inside of the flange 5. After confirming that the groove width gradually expands sufficiently by this contact, a gauge (not shown) is stopped, and then the hydraulic cylinder 23 is stopped and slid back to the original state. The dimension to be expanded is determined to be larger in consideration of the amount that the groove width returns again due to the elasticity of the flange 5. Again, the device 7 is run in the longitudinal direction and moved to the next reduced portion.
[0012]
(Configuration of groove width reduction correction device)
The apparatus 31 shown in FIGS. 1 and 3 is a correction apparatus for reducing and correcting the groove width.
The main body 35 is provided with two rollers 33 for running the groove-shaped edge of the U-rib 1 facing upward, that is, the edge of the flange 5 in the longitudinal direction of the U-rib 1. In the main body 35, a pair of vertical members 37 that support both ends of the two rollers 33 are arranged in the longitudinal direction of the U rib 1, and in order to connect the vertical members 37, the groove width direction of the U rib 1. And a pair of transverse members 39 arranged in The lateral members 39 are fixed by bolts 41 at a certain distance from each other.
[0013]
A spacer 43 is sandwiched between the lateral members 39, and a hydraulic cylinder 45 is provided outside the spacer 43. An abutting member 47 is provided at the tip of a piston (not shown) extending from the hydraulic cylinder 45 so that the flange 5 can be abutted from the outside. Hydraulic oil is supplied from the hydraulic hose 47 to the hydraulic cylinder 45. The lateral member 39 has a downwardly shallow U-shape for locking the groove-shaped edge of the U-rib 1 from the outside in the width direction. One inner corner portion 49 of the U-shape serves as the other abutting member.
[0014]
(Function)
The operator manually moves the device 31 over the flange 5 of the U-rib 1 in the longitudinal direction, stops the device where the groove width seems to be reduced visually, and does not show the edge of the flange 5. After applying a gauge and confirming the degree of enlargement with this gauge, the hydraulic cylinder 45 is operated to bring the contact member 47 into contact with the outside of the flange 5. After confirming that the groove width is gradually reduced sufficiently by this contact with a gauge (not shown), the hydraulic cylinder 45 is stopped and the contact member 47 is returned to its original state. The size to be reduced is determined to be larger in consideration of the amount that the groove width returns again due to the elasticity of the flange 5. Again, the device 31 is moved in the longitudinal direction and moved to the next enlarged portion.
[0015]
(Other embodiments)
In the above embodiment, the hydraulic cylinder 45 is provided only on one contact member 47. However, in another embodiment, such a combination of the hydraulic cylinder 47 and the contact member 47 is used. A pair or a plurality of pairs can be provided and contact can be made from the outside of the flange 5.
[0016]
Further, in the above embodiment, the device for expanding and correcting the groove width and the device for reducing and correcting the groove width are provided separately, but in other embodiments, they are combined to form an integrated object. It is also possible to configure.
Further, in the above embodiment, the rollers 8 and 33 are for manually driving the devices 7 and 31, but in other embodiments, a motor for traveling is provided to travel electrically. Is also possible. The hydraulic cylinder 45 may be a hydraulic cylinder or the like.
[0017]
【The invention's effect】
As described above, according to the first, second , third, or fourth invention, correction can be performed while the apparatus main body is driven by a roller on the bottom or both edges of the groove-shaped cross-section steel material. Work efficiently. Further, since the abutting member is slid in the groove width direction and in a direction substantially parallel to the bottom portion by the hydraulic cylinder to abut against the steel material, the correction can be performed with high accuracy. In addition, according to the third invention, one of the contact members is fixed to the main body, and only the other is slid to reduce the number of hydraulic cylinders, thereby reducing the cost of the apparatus. Is possible.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which two apparatuses according to an embodiment of the present invention are correcting a U-rib.
2A is a front view showing a correction device for expanding and correcting the groove width in FIG. 1, FIG. 2B is a plan view of FIG. 1A, and FIG. 2C is a side view of FIG.
3A is a front view showing a correction device for reducing and correcting the groove width in FIG. 1, FIG. 3B is a plan view of FIG. 1A, and FIG. 3C is a side view of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 U rib 3 Web 5 Flange 7 Expansion correction apparatus 8 Roller 9 Main body 11 Support part 13 Guide plate 15 Rail plate 17, 19 Slide plate 21 Contact member 23 Hydraulic cylinder 25 Steel belt 27 Bolt nut 29 Hydraulic hose 31 Reduction correction apparatus 33 Roller 35 Body 37 Vertical member 39 Horizontal member 41 Bolt 43 Spacer 45 Hydraulic cylinder 47 Hydraulic hose 49 Inner corner

Claims (4)

To correct to extend the groove width of the groove-shaped cross-section steel, the body running at the roller bottom upward grooved in the longitudinal direction of the steel material, substantially parallel to the groove width direction and the bottom portion relative to the body comprising a contact member in contact with the steel slides in the direction from the inside of the grooves, and a hydraulic cylinder for sliding said contact member,
The groove width straightening device for a groove-shaped cross-section steel material, wherein the contact member has a wedge shape having an inclination along an inner inclination of the groove. To correct by reducing the groove width of the groove-shaped cross-section steel, a body running rollers on both edges of the upward grooved in the longitudinal direction of the steel, and the body with respect to the groove width direction and the bottom A groove width correcting device for a groove-shaped cross-section steel material, comprising: an abutting member that slides in a substantially parallel direction and abuts against a steel material from outside the groove; and a hydraulic cylinder that slides the abutting member. 3. The groove width correcting device for a groove-shaped cross-section steel material according to claim 1, wherein two abutting members exist in the groove width direction, one is fixed to the main body, and the other is slid. In order to extend and correct the groove width of the groove-shaped cross-section steel material, a first main body that travels with a roller in the longitudinal direction of the steel material in a longitudinal direction of the steel material, and a groove width direction with respect to the first main body and the bottom portion A first abutting member that slides in a direction substantially parallel to the groove and abuts against the steel from the inside of the groove, and a first hydraulic cylinder that slides the first abutting member, and the abutting member is located inside the groove. A groove width expanding device having a wedge shape with an inclination along the inclination of
In order to reduce and correct the groove width of the steel material, a second body that runs on both edges of the upward groove shape with a roller in the longitudinal direction of the steel material, the groove width direction with respect to the second body, and the A groove width reducing device having a second contact member that slides in a direction substantially parallel to the bottom and contacts the steel from the outside of the groove, and a second hydraulic cylinder that slides the second contact member;
A groove width correction unit for a groove-shaped cross-section steel material.

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