JP2002143929A - Portable channel steel straightening machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable channel steel straightening machine in which any large facility is not required, even an inexperienced operator can easily perform the work, and the productivity is high. SOLUTION: This straightening machine has side plate parts 12 and 13 on both sides of a center flat plate part 14, and straightens a channel member 11 comprising a steel sheet pile or a channel steel of inverted U-shaped section with the side plate parts 12 and 13 deformed in the width direction by the straightening. The straightening machine comprises a frame with casters 16 fitted to a lower part thereof, a loading base 18 which is provided on the frame 17 with the channel member 11 loaded thereon in an abutted manner on the lower sides of the side plate parts 12 and 13 in the vicinity of a straightening end of the channel member 11, and a pressing means 19 which is provided on the frame 17 and presses downwardly the flat plate part 14 in the vicinity of the straightening end of the channel member 11 loaded on the loading base 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting edge of a steel sheet pile or a channel steel having a groove shape in section cut by a cutting machine (or a processing machine) such as a band saw.
That is, the present invention relates to a portable channel shape straightening machine for correcting deformation near a processing end to a reference size.

[0002]

2. Description of the Related Art Conventionally, a straightening machine has been used to straighten the vicinity of the cut end (or the vicinity of the machined end) of a channel steel sheet pile or a channel formed of a channel steel. The vicinity of the cut end of the channel cut with a band saw or other cutting machine according to the specifications of the customer is on the left and right sides of the cross section due to residual stress generated during the manufacturing of the channel and the cutting load by the cutting machine. The plate is contracted and deformed. That is, in a channel member having an inverted U-shaped cross section in which the upper ends of the left and right side plate portions are integrally connected by a flat plate portion, the widths of the opposed lower sides of the left and right side plate portions are respectively relative to a reference dimension. It is getting smaller. For this purpose, the cut channel material is conveyed to a fixed type straightening machine by, for example, a crane, a transfer and a roller table, and after correcting the vicinity of the cut end by the straightening machine, again by a roller table, a transfer and a crane. I am carrying it out.

[0003]

However, the conventional straightening machine has the following problems to be solved. Since the channel is transported to the fixed type straightening machine by using a crane, a transfer and a roller table, a large-scale facility is required, and the equipment cost, the installation space, and the skilled worker are required. When positioning the vicinity of the cut end of the channel material to be corrected from the roller table to the fixed type correction device, it is difficult to perform the positioning, which requires time and effort. In particular, it is difficult to position in accordance with the length of the channel, which requires time and effort. Furthermore, as a result of the above, productivity was low, and it was not possible to cope with shortening of the construction period and increase in production. The present invention has been made in view of such circumstances, does not require large-scale equipment, can be easily worked even by inexperienced people,
Another object of the present invention is to provide a portable channel straightening machine with high productivity.

[0004]

According to the present invention, there is provided a straightening device for a portable channel according to the present invention, comprising side plates on both sides of a central flat plate, wherein the side plates are deformed in the width direction by processing. A straightening machine for a channel member made of steel sheet pile or channel steel arranged in an inverted U-shape at the time of straightening. A mounting table that is placed in contact with the lower side of the side plate near the machined end of the profile, and a flat plate that is provided on the gantry and that is near the machined end of the channel formed on the mounting table is pressed downward. And pressing means for performing the operation. With this, the operator operates the gantry to move the straightening device for the portable channel to the place where the channel is arranged, and places the vicinity of the processing end of the channel on the mounting table, and presses. When the flat part near the processing end is pressed by the means, the both side plate parts whose opposing lower widths are reduced by the processing are expanded by the pressing force and can be corrected to the reference size.

[0005] In the straightener for a portable channel according to the present invention, the cross-sectional shape of the mounting table at the portion in contact with the lower side of the side plate near the processing end of the channel is inclined downward toward the outside. Good to be. Thereby, the correction can be performed more smoothly, and the pressing force can be further reduced. In the straightener for a portable channel according to the present invention, an inverted U-shaped cross-section including a pair of gauge portions arranged at a predetermined gap from a lower side of a side plate portion near a processing end of the channel. The correction gauge may be configured to be mounted on the upper surface of the flat portion of the channel. Thereby, the operation and stop of the pressing means can be performed while observing the reduced state of the gap.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a front view of an essential part of a portable channel straightening machine according to an embodiment of the present invention, FIG. 2 is a side view of the portable channel straightening machine, and FIG. FIG. 4 is an explanatory view of an operation of correcting the vicinity of the cut end of the channel material using a correction gauge by a pressing means of a portable channel material straightening machine, and FIG. 4 is an AA view of FIG. 3.

As shown in FIG. 1, a portable channel straightening machine 10 according to an embodiment of the present invention cuts (processes) a steel sheet pile 11 which is an example of a channel material, such as a band saw. This is a straightening machine that corrects the deformation generated at the cutting (machining) end when cutting (machining) is performed (not shown). In addition, the steel sheet pile 11 is
It is a long material having a wide inverted U-shaped cross section in which the side plate portions 12 and 13 and a central flat plate portion 14 connected to upper ends of both side plate portions 12 and 13 are integrally formed. By processing, the both side plate portions 12 and 13 are reduced in the width direction.

As shown in FIGS. 1 and 2, the portable channel straightening machine 10 has two handles (or operating rods) 15 and casters (two in the embodiment) 16 attached to a lower portion thereof. And a mounting table 18 provided at a lower portion of the mounting table 17 for mounting the steel sheet pile 11 in contact with and under the side plates 12 and 13 near the cut end of the steel sheet pile 11. And pressing means 19 for pressing the flat plate portion 14 near the cut end of the steel sheet pile 11 placed on the placing table 18 downward. Hereinafter, these will be described in detail. As shown in FIGS. 1 and 2, the direction orthogonal to the traveling direction of the portable channel shape straightening machine 10 is the left-right direction, and the portable channel shape straightening machine 10 is moved forward and backward in the front-rear direction. Call.

The gantry 17 is, as shown in FIGS.
Mainly four H-section steels 20, 21, 22, 23,
A vertical frame 24 arranged in the lower, left, and right sides and configured in a rectangular shape; and a horizontal frame 2 attached substantially horizontally to a lower end portion of the vertical frame 24 and mainly configured in a rectangular shape by a pipe.
5 is provided. Two casters 16 that roll on the floor 53 via mounting brackets 26 and 27 are attached to the lower front part of the vertical frame 24.

As shown in FIG. 2, a horizontal frame 25 has a pipe 29 attached to the left and right ends of the H-shaped steel 21 via a mounting plate 28 via a mounting plate 28, and two pipes 29, respectively. And a pipe 30 for connecting the inside of the rear end portion. Above the rear end of each pipe 29, a base of an L-shaped handle 15 having an operation section 31 arranged substantially horizontally at the front end is attached. Therefore, if the operator holds and operates the operation unit 31 with both hands, the portable channel shape straightening machine 10 can be moved to an arbitrary place.

As shown in FIG. 1, the mounting table 18 is
Are provided on the H-shaped steel 21 of the vertical frame body 24. The mounting table 18 has a width approximately equal to the width of the flange portion of the H-shaped steel 21, a rectangular mounting plate 32 slightly longer than the width B of the steel sheet pile 11, and both ends of the mounting plate 32 in the left-right direction. And sliding guide members 33 and 34 provided in the section. The sliding guide members 33 and 34 are provided on the side plate portions 12 and 13 of the steel sheet pile 11.
The lower side has inclined surfaces 35 and 35a at the portions where it contacts, and has a cross-sectional shape inclined downward toward the outside in the left-right direction.

Accordingly, the pressing means 19 is driven to drive the mounting table 1.
When the flat plate portion 14 near the cut end of the steel sheet pile 11 placed on the side 8 is pressed downward, the lower sides of the side plate portions 12 and 13 slide outward along the inclined surfaces 35 and 35a, respectively. The parts 12 and 13 can be deformed in directions away from each other to correct the steel sheet pile 11 to a reference size.

As shown in FIG. 1, the pressing means 19 is mounted on the gantry 1.
7 is provided below the H-section steel 20 of the vertical frame 24. The pressing means 19 includes a pair of mounting brackets 36 and 37 mounted on the lower surface of the H-shaped steel 20 so as to face each other at a predetermined interval in the left-right direction by welding or the like, and a reciprocating mechanism mounted on the mounting brackets 36 and 37. And a pressing member 41 attached to a distal end portion of a rod 39 of the hydraulic cylinder 38 via a connection block 40.

A male screw portion is formed at the tip of the rod 39, and a female screw portion with which the male screw portion is screwed is formed on the upper portion of the connection block 40. An upper flange of a pressing member 41 made of H-shaped steel is fixed to the lower surface of the connection block 40. As shown in FIG. 2, an electric hydraulic pump 42 for driving a hydraulic cylinder 38 is provided.
Are fixed on the horizontal frame 25 of the gantry 17 via the mounting seats 43 and 44. The piping between the electric hydraulic pump 42 and the hydraulic cylinder 38, the operation valve, and the like are not shown, but when the hydraulic cylinder 38 is driven, the pressing member 41 can be moved up and down with respect to the mounting table 18.

As shown in FIG. 1, the pressing member 41 of the pressing means 19 directly presses the flat plate portion 14 of the steel sheet pile 11 to control the pressing force or the pressing stroke to correct the vicinity of the cut end. However, as shown in FIGS. 3 and 4, a short correction gauge 46 having an inverted U-shaped cross section may be placed near the end of the steel sheet pile 11 to correct the vicinity of the cut end. The straightening gauge 46 is placed on the upper surface of the flat plate portion 14 of the steel sheet pile 11, and the side plate portion 1 near the cut end of the steel sheet pile 11.
A pair of left and right gauge portions 47 and 48 are provided with a predetermined gap G from the lower sides of the gauge portions 2 and 13.
The upper ends of the gauges 7 and 48 are connected to each other by a flat mounting portion 49 abutting against the flat plate portion 14 (gauge width W is, for example, about 15 mm) to form a gauge.

The straightening gauge 46 can be manufactured by bending both ends of a long thin plate having a width substantially equal to the width of the flange of the H-shaped steel constituting the pressing member 41. In addition,
The gap G can be appropriately determined according to the amount of correction (deformation) of the side plate portions 12 and 13, and the opposed gauge portions 47 and 48 are opposed to each other.
Are arranged at positions where they do not receive a deformation force due to deformation due to the correction of the side plates 12 and 13 at the time of correction. Therefore, as the pressing stroke increases, the gap G gradually narrows, and when the pressing is stopped when the predetermined gap G (for example, the gap G becomes 0), the reference dimension of the steel sheet pile 11 can be set. Reference numerals 50 and 51 in FIG. 1 are reinforcements for fixing the lower ends of the H-shaped steel 20 of the vertical frame 24 in the left-right direction and the inner upper ends of the opposed H-shaped steels 22 and 23 by welding. The reference numeral 52 in FIG. 2 indicates a hook.

Next, a straightening work method using the portable channel straightening machine 10 according to one embodiment of the present invention will be described with reference to the drawings. (1) A plurality of steel sheet piles 11 that are cut to a predetermined length by a cutting machine and that need to be straightened near the cut ends are shown in FIGS. 1 and 3.
As shown in the figure, the sheet is deployed at a predetermined pitch in the left-right direction with the flat plate portion 14 up via a rail 54, which is an example of a product bed placed on the floor 53. (2) Portable channel straightening machine 10 placed in a standby area
While the operator grips the handle 15 with both hands and operates it,
The portable channel straightener 10 is moved to the vicinity of the vicinity of the predetermined cutting edge of the steel sheet pile 11.

(3) The handle 15 is lifted upward, and in this state, the portable channel straightening machine 10 is advanced until the mounting table 18 is located vertically below the cutting edge of the steel sheet pile 11. When both hands are released from the handle 15, the upper surface of the flat plate portion 14 of the steel sheet pile 11 comes into contact with the lower surface of the pressing member 41. (4) As shown in FIG. 3 and FIG. 4, the correction gauge 46 is set with the gap G secured near the cut end of the steel sheet pile 11, centered.

(5) The electric hydraulic pump 42 is operated, and the hydraulic cylinder 38 of the pressing means 19 is operated to press the pressing member 41.
By gradually pressing the flat plate portion 14 of the steel sheet pile 11 while lowering it, the deformation near the cut end is gradually corrected. That is, when the side plate portions 12 and 13 are deformed outward, the gap G shown in FIG. Narrows. (6) When the gap G becomes substantially zero while the pressing is continued (that is, when the side plates 12, 13 contact the left and right gauges 47, 48), the lowering of the hydraulic cylinder 38 is stopped, Raise the hydraulic cylinder 38. By this pressing, the vicinity of the cut end of the steel sheet pile 11 is corrected to the reference size.

(7) While the handle 15 is being raised, the vicinity of the cut end of the steel sheet pile 11 is gradually lowered to deposit the steel sheet pile 11 on the upper surface of the rail 54, and then the mounting table 18 is further moved to the cut end of the steel sheet pile 11. Handle 1 until it is located vertically below
5 is lifted, and the portable channel straightening machine 10 is retracted in the state as it is. The straightening gauge 46 placed on the steel sheet pile 11 is previously removed before the portable channel straightening machine 10 is retracted. (8) The straightening operation of the steel sheet pile 11 is completed, and the next steel sheet pile 11 is corrected.
Can be prepared for the correction work. The pressing means 19
Since the reaction force of the pressing force due to the above is borne by the vertical frame 24 of the gantry 17, the horizontal frame 25 of the gantry 17 and the casters 16
Does not reach the pressing force.

In the above-described embodiment, the straightening operation is performed with the straightening gauge 46 placed on the steel sheet pile 11, but the present invention is not limited to this, and the straightening gauge 46 may not be used. Other methods may be used as long as the deformation state near the cut end of the steel sheet pile 11 at the time of pressing can be detected. The correction gauge 46 is of an attachment type and a detachable type, but is not limited to this. The correction gauge 46 may be fixed to the pressing member 41 or slidably attached to the pressing member 41 as necessary.

A slide guide member 3 having inclined surfaces 35, 35a inclined downward toward the outside is provided on a mounting table 18 with which the lower sides of the side plates 12, 13 of the steel sheet pile 11 abut.
Although 3, 34 are provided, the present invention is not limited to this, and a sliding guide member having a horizontal surface may be provided. For example, as long as the strength is allowed, the side plate portions 12 and 13 can be guided only by the mounting plate 32 without providing the sliding guide member. Also,
Although the sliding guide members 33 and 34 are separately provided on the mounting plate 32, the present invention is not limited to this, and a sliding guide member having an integral structure may be provided on the mounting plate 32.

Although the hydraulic cylinder 38 is used as the mechanism for moving the pressing means 19, the invention is not limited to this, and an air cylinder or an electric jack may be used. The hydraulic oil is generated by the electric hydraulic pump 42 and the hydraulic cylinder 38
However, the present invention is not limited to this, and a manual hydraulic pump can be used depending on the situation. Although the steel sheet pile 11 has been described as the channel material, the present invention is not limited to this, and the present invention can be applied to a channel having a similar cross-sectional shape or a material having a similar channel shape, for example, a channel steel. Although the handle 15 is operated by hand, the present invention is not limited to this. The handle 15 may not be provided and the other part of the gantry may be grasped to operate the portable channel straightener according to circumstances.

[0024]

According to the portable channel straightening machine according to the first to third aspects of the present invention, the operator operates the gantry to move the portable channel straightening machine to a place where the channel is arranged. Then, when the vicinity of the processing end of the channel is placed on the mounting table and the flat plate portion near the processing end is pressed by the pressing means, the side plate portion in the reduced state by the processing is expanded by the pressing force to the standard size. Since the correction can be performed, an apparatus with high productivity can be obtained without requiring large-scale equipment. In particular, in the portable channel straightening machine according to claim 2, the cross-sectional shape of the mounting table is inclined downward along the outside, whereby
Since the correction can be performed more smoothly and the pressing force can be made smaller, the apparatus can be made more compact and inexpensive. In the straightener for portable channel according to claim 3, since the straightening operation can operate and stop the pressing means while observing the reduced state of the gap between the gauge portion of the straightening gauge and the side plate portion, Even an inexperienced person can easily work, and at the same time, can perform accurate correction.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a portable channel straightening machine according to an embodiment of the present invention.

FIG. 2 is a side view of the portable channel straightening machine.

FIG. 3 is an explanatory view of an operation of correcting the vicinity of a cut end of a channel member using a correction gauge by a pressing means of the portable channel member straightening machine.

FIG. 4 is a view taken on line AA of FIG. 3;

[Explanation of symbols]

10: Portable straightener for channel material, 11: Steel sheet pile (channel material), 12: Side plate portion, 13: Side plate portion, 14: Flat plate portion, 1
5: handle, 16: caster, 17: mount, 18:
Mounting table, 19: pressing means, 20 to 23: H-shaped steel, 24:
Vertical frame, 25: horizontal frame, 26, 27: mounting bracket, 28: mounting plate, 29: pipe, 30: pipe,
31: operation unit, 32: mounting plate, 33, 34: sliding guide member, 35, 35a: inclined surface, 36, 37: mounting bracket, 38: hydraulic cylinder (advancing / retracting mechanism), 39:
Rod, 40: connection block, 41: pressing member, 42:
Electric hydraulic pump, 43, 44: mounting seat, 46: straightening gauge, 47: gauge section, 48: gauge section, 49: mounting section, 50, 51: reinforcing plate, 52: hook, 53: floor surface, 54: Rail (product floor)

Claims (3)

[Claims] 1. A straightening machine for a channel member made of a steel sheet pile having an inverted U-shaped cross section or a channel steel having side plate portions provided on both sides of a central flat plate portion, the side plate portions being deformed in the width direction by processing. And a mounting table on which a caster is attached at a lower portion, and a mounting table provided on the mounting table, for mounting the channel in contact with a lower side of the side plate near the processing end of the channel, and Pressing means for pressing the flat portion in the vicinity of a processed end of the channel material placed on the mounting table to the lower side, the device being provided on the gantry, wherein the straightening device for a portable channel material is provided. . 2. The portable channel straightening machine according to claim 1, wherein the mounting table has a cross-sectional shape in which a portion of the mounting table is in contact with a lower side of the side plate portion near a processing end of the channel. A straightening machine for channel-shaped members, characterized in that it is inclined downward toward. 3. A pair of gauges arranged in the straightening device for portable channel members according to claim 1 or 2, wherein a predetermined gap is provided between a lower side of the side plate portion near a processing end of the channel members. A straightening machine for a portable channel, wherein a straightening gauge having an inverted U-shaped cross section having a portion is placed on an upper surface of a flat plate portion of the channel.