Iron plate straightening device

Abstract

To provide a laid iron plate correction device having a constitution capable of automating correction work of the laid iron plate.SOLUTION: There is provided a laid iron plate correction device having a constitution capable of adjusting a position, a direction and a pushing amount of a pair of hydraulic jacks 9a, 9b according to a deformed shape of a laid iron plate 100, and a position, a direction and an interval of a pair of anvils 10a, 10b on the lower surface side of the laid iron plate 100 receiving pressing force of pressure rods 19a, 19b of the pair of hydraulic jacks 9a, 9b.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a steel plate correction device for correcting deformed portions such as bending and warping that occur in steel plates laid on road surfaces in civil engineering work and the like.

Background Art

[0002] Steel plates laid on road surfaces in civil engineering work and the like are deformed such as bending and warping due to the loading of heavy objects.

[0003] Therefore, when reusing in the next construction work, it is necessary to correct the deformed portions.

[0004] Patent Document 1 discloses a steel plate correction device including a press device that sandwiches and corrects a deformed portion of a steel plate from above and below.

[0005] The steel plate correction device is provided with a hydraulic jack that expands and contracts in the vertical direction by a vertical drive mechanism so as to be movable in a direction crossing the longitudinal direction of the steel plate, and the position and the pushing amount of the hydraulic jack are changed according to the shape and the amount of deformation of the deformed portion of the steel plate, thereby correcting the deformed portion of the steel plate.

[0006] And when pressing the deformed portion of the steel plate by the hydraulic jack, a metal bed is inserted under the steel plate to support the lower surface of the steel plate.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] In order to correct the deformed portion of the iron plate by the iron plate correcting device, it is necessary to change the position and the pushing amount of the hydraulic jack according to the position and the amount of deformation of the deformed portion of the iron plate, and to adjust the position of the base plate installed on the lower surface of the iron plate respectively.

[0009] However, in the conventional iron plate correcting device, even if the position and the pushing amount of the hydraulic jack are configured to be mechanically operable, the base plate installed on the lower surface of the iron plate is inserted by the operator manually based on experience into the lower surface of the iron plate.

[0010] Therefore, with the configuration of the conventional iron plate correcting device, the position of the base plate inserted into the lower surface of the iron plate cannot be mechanically operated.

[0011] Therefore, the present invention aims to enable the automation of the iron plate correction work by providing an iron plate correcting device configured to be able to appropriately change the position of the base plate together with the position and the pushing amount of the hydraulic jack.

Means for Solving the Problems

[0012] The iron plate correcting device according to the present invention includes a press device that corrects the deformed portion of the iron plate by sandwiching it from above and below, and a conveying conveyor that conveys the iron plate into the press device and discharges the iron plate corrected by the press device from the press device. The press device includes a hydraulic jack that is located on the upper surface side of the iron plate and applies a pressing force to the iron plate, and a base plate that receives the lower surface of the iron plate when being pressed by the hydraulic jack. The hydraulic jack is movable in a direction intersecting the conveying direction of the iron plate, and the base plate is movable in a direction intersecting the conveying direction of the iron plate.

[0013] The hydraulic jack may be composed of a pair of hydraulic jacks and may be rotatable about a vertical axis between the pair of hydraulic jacks as a rotation axis.

[0014] Furthermore, the pair of hydraulic jacks may be configured to be separable from each other.

[0015] The base plates are composed of a pair of base plates, which are configured to be separable from and attachable to each other, and may be rotatable about a vertical axis between the pair of base plates as a rotation axis.

[0016] A flatness measuring device for detecting a deformed portion of the iron plate before being carried into the press device is provided, and a correction control unit for controlling the operations of the conveying conveyor, the press device, and the pair of base plates based on the deformed shape of the iron plate detected by the flatness measuring device can be provided.

Advantages of the Invention

[0017] According to the iron plate correction device of the present invention, the position and the pushing amount of the hydraulic jack can be changed according to the deformed shape of the iron plate, and by mechanically operating the position of the base plate on the lower surface side of the iron plate that receives the pressing force of the pressing rod of the hydraulic jack, an appropriate correction operation becomes possible.

[0018] The hydraulic jacks are composed of a pair of hydraulic jacks, which are configured to be rotatable about a vertical axis between the pair of hydraulic jacks as a rotation axis, and are configured to be separable from and attachable to each other, so that the position, direction, and interval of the hydraulic jacks can be appropriately adjusted according to the deformed shape of the iron plate.

[0019] The base plates are composed of a pair of base plates, which are configured to be separable from and attachable to each other, and are configured to be rotatable about a vertical axis between the pair of base plates as a rotation axis, so that the position, direction, and interval of the base plates can be appropriately adjusted according to the deformed shape of the iron plate.

[0020] By providing a flatness measuring device for detecting a deformed portion of the iron plate before being carried into the press device, and providing a correction control unit for controlling the operations of the conveying conveyor, the press device, and the pair of base plates based on the deformed shape of the iron plate detected by the flatness measuring device, automation of iron plate correction also becomes possible.

Brief Description of the Drawings

[0021]

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Embodiments for Carrying Out the Invention

[0022] Hereinafter, an embodiment of the iron plate correcting device 1 according to the present invention will be described with reference to the drawings.

[0023] FIG. 1 is a side view showing the overall configuration of the floor iron plate correction device 1 according to an embodiment of the present invention, and FIG. 2 is a partial plan view of the floor iron plate correction device 1 according to an embodiment of the present invention.

[0024] As shown in FIGS. 1 and 2, the floor iron plate correction device 1 according to this embodiment has a configuration in which a press device 3 for correcting the deformed portion A of the floor iron plate 100 by sandwiching it from above and below is arranged between two conveying conveyors 2a and 2b for conveying the floor iron plate 100.

[0025] The conveying conveyors 2a and 2b and the press device 3 are operationally controlled by a correction control unit 50 shown in FIG. 25 described later. Regarding the conveyance and correction operations of the floor iron plate 100 described later, they are performed according to the operation program stored in the correction control unit 50.

[0026] The conveying conveyors 2a and 2b are respectively provided on the upstream side and the downstream side with the press device 3 interposed therebetween. The upstream and downstream conveying conveyors 2a and 2b have the same configuration and convey the floor iron plate 100 in a direction along the longitudinal direction.

[0027] As shown in FIG. 3, auxiliary rollers 4 are installed at the ends of the conveying conveyors 2a and 2b on the side opposite to the press device 3.

[0028] The conveying conveyors 2a and 2b include a conveying frame 5 and a plurality of conveying rollers 6. By driving the conveying rollers 6, the floor iron plate 100 arranged thereon is conveyed.

[0029] A motor 7 is installed on the conveying frame 5 as a driving means for the conveying rollers 6. The motor 7 and all the conveying rollers 6 are connected by a chain 8, and the rotation of the motor 7 is transmitted to the conveying rollers 6 so that all the conveying rollers 6 perform the same operation.

[0030] As shown in FIGS. 4 to 6, the press device 3 is located on the upper surface side of the iron sheet 100 conveyed between the conveying conveyors 2a and 2b, and includes a pair of hydraulic jacks 9a and 9b that apply a pressing force to the iron sheet 100, and a pair of bed plates 10a and 10b that receive the lower surface of the iron sheet 100 when being pressed by the pair of hydraulic jacks 9a and 9b.

[0031] The pair of hydraulic jacks 9a and 9b are installed on a frame-shaped frame 11 through which the iron sheet 100 can pass.

[0032] The frame-shaped frame 11 is composed of four columns 12 erected on both sides in the width direction of the iron sheet 100 conveyed between the conveying conveyors 2a and 2b, and two parallel beam members 13 provided at the upper ends of the columns 12.

[0033] On the two parallel beam members 13 of the frame-shaped frame 11, there are provided a traveling carriage 14 that moves the pair of hydraulic jacks 9a and 9b in a direction crossing the iron sheet 100 from one end to the other end of the beam member 13, and a traveling position detector 41 of the traveling carriage 14. The traveling carriage 14 is driven by a traveling motor 15.

[0034] On the traveling carriage 14, a swivel base 18 is installed to swivel-drive the pair of hydraulic jacks 9a and 9b about a vertical axis between the pair of hydraulic jacks 9a and 9b by a swivel gear 16 and a swivel motor 17, and the swivel position of the hydraulic jacks 9a and 9b is detected by a swivel position detector 42.

[0035] By driving the traveling carriage 14 and the swivel base 18, the pair of hydraulic jacks 9a and 9b can be moved to an arbitrary position from one end to the other end of the beam member 13, that is, to an arbitrary position in the direction crossing the iron sheet 100, as shown in FIGS. 7A to 9B, and the directions of the pair of hydraulic jacks 9a and 9b can be swiveled to an arbitrary angle with respect to the conveying direction of the iron sheet 100.

[0036] For example, FIGS. 7A and 7B show a state in which the straight line connecting the pair of hydraulic jacks 9a and 9b is rotated in a direction orthogonal to the conveying direction of the laying iron plate 100, and the pair of hydraulic jacks 9a and 9b are positioned at the center in the width direction of the laying iron plate 100.

[0037] Also, FIGS. 8A and 8B show a state in which the straight line connecting the pair of hydraulic jacks 9a and 9b is rotated by 90° so as to face the same direction as the conveying direction of the laying iron plate 100, and the pair of hydraulic jacks 9a and 9b are moved to one end in the width direction of the laying iron plate 100.

[0038] Also, FIGS. 9A and 9B show a state in which the straight line connecting the pair of hydraulic jacks 9a and 9b is rotated at an angle of 45° with respect to the conveying direction of the laying iron plate 100, and the pair of hydraulic jacks 9a and 9b are moved to the other end in the width direction of the laying iron plate 100.

[0039] The hydraulic jacks 9a and 9b are provided with pressing rods 19a and 19b that expand and contract by hydraulic pressure, and the pressing rods 19a and 19b can press the deformed portion A of the laying iron plate 100.

[0040] When pressing the deformed portion A of the laying iron plate 100 with the pressing rods 19a and 19b of the pair of hydraulic jacks 9a and 9b, the pair of metal beds 10a and 10b that receive the lower surface of the laying iron plate 100 are configured to be width-adjustable to an arbitrary width.

[0041] The pair of metal beds 10a and 10b are slidably installed on parallel slide rails 21a and 21b installed on the metal bed base 20, and the width can be adjusted by metal bed moving actuators 22a and 22b installed on the metal bed base 20.

[0042] A metal bed position detector 32 for detecting the interval between the pair of metal beds 10a and 10b is installed on the metal bed base 20.

[0043] The gold bed base 20 is provided on the support carriage 23 via a swivel bearing 24, and is swiveled about a vertical axis by an annular rack 25 and a drive pinion 26 provided on the outer periphery of the swivel bearing 24, so that the direction of the gold bed base 20 can be positioned at an arbitrary angle with respect to the conveying direction of the laying iron plate 100.

[0044] A swivel position detector 27 for detecting the swivel position of the gold bed base 20 is installed on the support carriage 23.

[0045] The support carriage 23 travels on two traveling rails 28 installed in a direction crossing the lower surface of the laying iron plate 100 conveyed between the conveying conveyors 2a and 2b, in a direction orthogonal to the conveying direction of the laying iron plate 100 in this embodiment, and can be positioned at an arbitrary position crossing the lower surface of the laying iron plate 100 by a rack and pinion mechanism 29 and a traveling actuator 30.

[0046] A traveling position detector 31 for detecting the traveling position is installed on the support carriage 23.

[0047] The pair of gold beds 10a and 10b can have their mutual distance adjusted, and the lower surface of the laying iron plate 100 can be positioned at an arbitrary position in the width direction of the laying iron plate 100 by the traveling mechanism of the support carriage 23, and can be positioned at an arbitrary angle with respect to the conveying direction of the laying iron plate 100 by the swivel mechanism of the gold bed base 20.

[0048] For example, FIGS. 10A and 10B illustrate a state in which the pair of gold beds 10a and 10b are in a direction orthogonal to the two traveling rails 28, that is, parallel to the conveying direction of the laying iron plate 100 and positioned at the center in the width direction of the laying iron plate 100.

[0049] FIGS. 11A and 11B show a state in which the pair of gold beds 10a and 10b are in a direction orthogonal to the two traveling rails 28, that is, in a direction orthogonal to the conveying direction of the laying iron plate 100 and positioned at one end in the width direction of the laying iron plate 100.

[0050] Figures 12A and 12B illustrate a state in which a pair of beds 10a and 10b are positioned at the other end in the width direction of the steel sheet 100, in a direction orthogonal to the two running rails 28, that is, parallel to the conveying direction of the steel sheet 100.

[0051] Next, FIGS. 13A to 18 show examples of adjusting the direction and width interval of the pair of beds 10a and 10b.

[0052] For example, FIGS. 13A and 13B show a state in which the direction of the pair of beds 10a and 10b is parallel to the conveying direction of the steel sheet 100 and the width interval is maximized.

[0053] FIG. 14 shows a state in which the interval between the pair of beds 10a and 10b is maximally widened and the direction of the pair of beds 10a and 10b is turned 45° with respect to the conveying direction of the steel sheet 100.

[0054] FIGS. 15A and 15B show a state in which only the bed 10a is moved in the direction of the bed 10b from the state of FIG. 13A, and the interval between the pair of beds 10a and 10b is reduced to about half of the maximum width.

[0055] FIG. 16 shows a state in which the direction of the pair of beds 10a and 10b is turned 90° from the state of FIG. 15A so as to be parallel to the width direction of the steel sheet 100.

[0056] FIGS. 17A and 17B show a state in which the interval between the pair of beds 10a and 10b is minimized and the direction of the pair of beds 10a and 10b is turned so as to be orthogonal to the width direction of the steel sheet 100.

[0057] FIG. 18 shows a state in which the direction of the pair of beds 10a and 10b is turned 45° from the state of FIG. 17A.

[0058] As illustrated in FIGS. 13A to 18, the pair of beds 10a and 10b can widen or narrow the interval between each other, and can also arbitrarily change the direction and position with respect to the conveying direction of the steel sheet 100.

[0059] Next, a flatness measuring device 33 for measuring the flatness of the steel sheet 100 conveyed between the conveying conveyors 2a and 2b and detecting the deformed portions and the amount of deformation of the steel sheet 100 is installed on the beam member 13 of the frame-shaped frame 11 straddling the steel sheet 100.

[0060] The flatness measuring devices 33 are respectively installed on the upstream side and the downstream side in the conveying direction of the steel sheet 100 conveyed by the conveying conveyors 2a and 2b.

[0061] As the flatness measuring device 33, for example, a three-dimensional scanner, a two-dimensional / three-dimensional laser displacement meter, or a multi-point length measuring sensor can be used.

[0062] The measurement of the flatness of the steel sheet 100 carried into the frame-shaped frame 11 may be performed by performing fixed-point wide-range measurement of the flatness measuring device 33 at a fixed position or by moving either the flatness measuring device 33 or the steel sheet 100 as shown in FIG. 19. In FIG. 19, A represents a fold line and B represents the measurement range of the flatness measuring device 33.

[0063] FIG. 20 is an example in which a moving frame 34 of the flatness measuring device 33 is installed over the entire length above the conveying conveyors 2a and 2b, and the flatness measuring device 33 is movably installed on this moving frame 34 to detect the deformed portions and the amount of deformation in the entire length of the steel sheet 100 on the conveying conveyors 2a and 2b.

[0064] Next, the correction control unit 50 stores an automatic control program for automatically controlling the positions and directions of the pair of hydraulic jacks 9a and 9b, the pressing amounts of the pressing rods 19a and 19b, and the positions, directions, and intervals of the base beds 10a and 10b according to the position and the amount of deformation of the deformed portion A of the steel sheet 100.

[0065] For example, as shown in FIG. 21, when there is a deformed portion A protruding on the lower surface side of the floor iron plate 100, a pair of hydraulic jacks 9a and 9b are arranged so as to straddle the deformed portion A, and one of a pair of anvils 10a and 10b hits the deformed portion A protruding on the lower surface side of the floor iron plate 100. Then, the pair of anvils 10a and 10b are arranged to perform correction.

[0066] Also, for example, as shown in FIG. 22, when there is a deformed portion A protruding on the upper surface side of the floor iron plate 100, a pair of hydraulic jacks 9a and 9b are arranged along the upper surface of the deformed portion A, and on the lower surface side of the floor iron plate 100, the pair of anvils 10a and 10b are arranged so as to straddle the deformed portion A to perform correction.

[0067] Also, for example, as shown in FIG. 23, when there is a deformed portion A where the end of the floor iron plate 100 is bent upward, a pair of anvils 10a and 10b are arranged so that one of them hits along the bending line, and a pair of hydraulic jacks 9a and 9b are arranged so as to straddle the bending line of the deformed portion A. One of the hydraulic jacks 9a and the anvil 10a sandwich the floor iron plate 100, and with the other anvil 10b as a fulcrum, the other hydraulic jack 9a presses the end of the floor iron plate 100 downward to correct the floor iron plate 100.

[0068] Next, the correction operation flow of the floor iron plate correction device 1 will be described based on FIG. 24.

[0069] The floor iron plate 100 to be corrected having a deformed portion is placed on the upstream conveying conveyor 2a and conveyed in the direction of the press device 3 (S1). The flatness measuring device 33 pre-detects the bending state of the deformed portion A of the floor iron plate 100 (S2), and the floor iron plate 100 is automatically conveyed by the conveying conveyors 2a and 2b so that the deformed portion A is positioned between the pair of hydraulic jacks 9a and 9b and the pair of anvils 10a and 10b of the press device 3 (S3).

[0070] When the laying iron plate 100 is automatically conveyed by the conveying conveyor 2a, the pressing rods 19a and 19b of the pair of hydraulic jacks 9a and 9b are at positions separated from the upper surface of the laying iron plate 100, and the pair of metal beds 10a and 10b are also at positions separated from the lower surface of the laying iron plate 100.

[0071] Next, the press device 3 and the metal beds 10a and 10b are automatically controlled by the automatic control program stored in the correction control unit 50 to correct the deformed portion A of the laying iron plate 100 (S4).

[0072] The corrected laying iron plate 100 is carried out by the conveying conveyor 2b (S5), the corrected portion of the carried-out laying iron plate 100 is reinspected by the flatness measuring instrument 33 (S6), and if the flatness of the corrected portion is within the allowable accuracy, the corrected laying iron plate 100 is carried out by the conveying conveyor 2b (S7).

[0073] When the flatness of the corrected portion reinspected by the flatness measuring instrument 33 exceeds the allowable accuracy and re-correction is required, the portion requiring re-correction is returned by the conveying conveyor 2b between the pair of hydraulic jacks 9a and 9b of the press device 3 and the pair of metal beds 10a and 10b, and the press device 3 and the metal beds 10a and 10b are automatically controlled by the automatic control program stored in the correction control unit 50 to re-correct the laying iron plate 100.

[0074] It is preferable to incorporate a learning function into the automatic control program stored in the correction control unit 50 and improve the accuracy of the operation patterns of the press device 3 and the metal beds 10a and 10b based on the data obtained by the re-correction.

[0075] The re-correction can be omitted depending on the proficiency of the automatic control program and the allowable accuracy of the correction finish.

[0076] As described above, the iron plate correcting device 1 according to the present invention can change the positions, directions, and pressing amounts of the pair of hydraulic jacks 9a and 9b according to the deformed shape of the iron plate 100, and can change the positions, directions, and intervals of the pair of metal beds 10a and 10b on the lower surface side of the iron plate 100 that receive the pressing forces of the pressing rods 19a and 19b of the pair of hydraulic jacks 9a and 9b, so as to perform appropriate correction work.

[0077] As described above, the embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made within the same scope or equivalent scope of the present invention with respect to the illustrated embodiments.

Explanation of Reference Numerals

[0078] 1: Iron plate correcting device 2a, 2b: Conveyor 3: Pressing device 4: Auxiliary roller 5: Conveyor frame 6: Conveyor roller 7: Motor 8: Chain 9a, 9b: Hydraulic jack 10a, 10b: Metal bed 11: Frame-shaped frame 12: Support column 13: Beam member 14: Traveling carriage 15: Traveling motor 16: Swivel gear 17: Swivel motor 18: Swivel base 19a, 19b: Pressing rod 20: Metal bed base 21a, 21b: Slide rail 22a, 22b: Metal bed moving actuator 23: Support carriage 24: Swivel bearing 25: Annular rack 26: Driving pinion 27: Swivel position detector 28: Traveling rail 29: Rack and pinion mechanism 30: Travel actuator 31: Travel position detector 32: Base plate position detector 33: Flatness measuring device 34: Moving frame 41: Travel position detector 42: Swivel position detector 50: Correction control unit 100: Sheet iron plate

Claims

1. A press device for straightening by sandwiching a deformed portion of a steel sheet from above and below, and a conveying conveyor for loading the steel sheet into the press device and unloading the steel sheet straightened by the press device from the press device. The press device includes a pair of hydraulic jacks positioned on the upper surface side of the steel sheet and applying a pressing force to the steel sheet, and a pair of anvils for receiving the lower surface of the steel sheet when pressing by the pair of hydraulic jacks. The pair of hydraulic jacks are movable in a direction intersecting the conveying direction of the steel sheet and are rotatable about a vertical axis between the pair of hydraulic jacks as a rotation axis. The pair of anvils are characterized in that they are movable in a direction intersecting the conveying direction of the steel sheet and are configured to be able to approach and separate from each other. A steel sheet straightening device.

2. A flatness measuring instrument for detecting a deformed portion of the steel sheet before being loaded into the press device is provided, and based on the deformed shape of the steel sheet detected by the flatness measuring instrument, a correction control unit for controlling the operations of the conveying conveyor, the press device, and the pair of anvils is provided. The steel sheet straightening device according to claim 1, characterized in that it is provided.

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