Plate distortion correction device

Abstract

To provide a plate strain correction device capable of simply correcting an uneven strain occurring in a bottom board and a steel plate by means of an upper cylinder and a lower cylinder.SOLUTION: A body frame 9 which is movable along a longer direction lies on an outer periphery of a support frame part 2 which supports the periphery of a plate to be corrected. An upper moving carriage 16 having an upper cylinder 25 is arranged on an upper frame 10 of the body frame, and a lower moving carriage 17 having a lower cylinder 31 is arranged on a lower frame 11. The upper and lower cylinders drive the upper and lower moving carriages, respectively, via synchronous movement means so as to synchronously move them while keeping their positions corresponding to the vertical direction, move them in a direction traverse to the plate to be corrected, and pressurize a site of strain by driving the respective cylinders.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a plate distortion correction device for correcting distortion in plates recovered from the ground or floor surface of a construction site or in steel plates that have been distorted due to processing. [Background technology]

[0002] At construction sites where heavy objects pass through, steel plates are laid on the ground or floor, but the large load often causes uneven distortion on the plates. In addition, various steel plate processing processes, such as shearing, punching holes, laser and plasma cutting, often cause distortion in the steel plate. For this reason, various plate distortion correction devices have been proposed to correct uneven distortion of plates after work or processing is completed (see Patent Document 1, for example). The straightening press described in Patent Document 1 has a frame body mounted on the top of a platform so that it can move laterally, a loading platform is provided on the frame body so that it can move vertically, and an upper die is attached to the ram of a main cylinder provided on the loading platform. A hydraulic jack is provided on the top surface of the platform to support the material to be straightened, and the hydraulic jack supports the material to be straightened in a state where it is raised from the platform. A lower die is mounted on the platform so that it can move back and forth and left and right, and the lower die is moved to be positioned in front of or behind the deformed part of the material to support the deformed part from below. Then, the upper die is lowered from above onto the center of the deformed part to apply pressure and correct the deformed part. This structure makes it possible to correct the deformed part, but when the lower die is moved to match the deformed part, it is difficult to correctly position it below the deformed part because it is hidden by the material to be corrected. Also, depending on the shape of the deformed part, the material to be corrected must be turned over before processing, which is not very efficient. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration Patent Publication No. 32922 / 1973 (claims, column 2, line 7, line 5, drawings) Summary of the Invention [Problem to be solved by the invention]

[0004] The problem to be solved by the present invention is to provide a plate distortion correction device which, when used to correct distortion occurring in a base plate, steel plate, etc., has an upper cylinder facing the top surface of the deformed part and a lower cylinder facing the bottom surface, which can be easily positioned at the correction location, and by driving the upper and lower cylinders at the appropriate time, can efficiently perform the plate distortion correction work. [Means for solving the problem]

[0005] According to the present invention, there is provided a plate distortion correction device comprising: a support frame portion which supports the periphery of the plate to be corrected with a space therebelow; and a main body frame which surrounds the outer periphery of the support frame portion and is movable along the longitudinal direction of the support frame portion, the main body frame having an upper frame located above the support frame portion, a lower frame opposite the upper frame and located below the support frame portion, and leg frames which connect both sides of the upper frame and the lower frame and stand up along both sides of the support frame portion, the upper frame and the lower frame are respectively provided with an upper movable carriage and a lower movable carriage which move in a direction crossing the support frame portion, the upper movable carriage is provided with an upper cylinder and the lower movable carriage is provided with a lower cylinder, and the upper movable carriage and the lower movable carriage are connected by a synchronous movement means so that the upper cylinder of the upper movable carriage and the lower cylinder of the lower movable carriage move synchronously while maintaining corresponding positions in the vertical direction.

[0006] In the present invention, the plate distortion correction device is provided such that the support frame is provided with a holding arm that supports the edge of the plate to be corrected from below, and preferably the holding arm is rotatably arranged so that the portion that contacts the plate can be changed.

[0007] Furthermore, according to the present invention, the above-mentioned plate distortion correction device is provided with a mounting base fixed to the ram of each cylinder and a swivel base rotatably connected to the mounting base on the upper cylinder and the lower cylinder, a metal strip is placed on the swivel base, and the metal strip is movably mounted on the swivel base. Effect of the Invention

[0008] The present invention is configured as described above, and includes a support frame that supports the periphery of the plate to be corrected with a space below, and a main frame that surrounds the periphery and is movable along the longitudinal direction of the support frame. The main frame includes an upper frame located above the support frame, a lower frame facing the upper frame and located below the support frame, and leg frames that connect both sides of the upper frame and the lower frame and stand along both sides of the support frame. The upper frame and the lower frame are respectively provided with an upper movable carriage and a lower movable carriage that move in a direction crossing the support frame, and the upper movable carriage is provided with an upper cylinder, and the lower movable carriage is provided with a lower cylinder. The upper movable carriage and the lower movable carriage are connected by a synchronous movement means so that the upper cylinder of the upper movable carriage and the lower cylinder of the lower movable carriage move synchronously while maintaining corresponding positions in the vertical direction. The plate to be corrected is placed on the support frame and the main frame is moved longitudinally to a position corresponding to the horizontal direction of the correction location, and then the upper cylinder is moved directly above the correction location by the synchronous movement means, and the lower cylinder also moves directly below the correction location in synchronization with the upper cylinder. In this state, when the upper and lower cylinders are driven to move the rams of each cylinder, the plate's correction location is pressed with its top and bottom surfaces supported by the upper and lower cylinders, so that the distortion can be accurately removed.

[0009] Furthermore, if the portion to be corrected is on the periphery of the plate, the position of the holding arm provided on the support frame can be adjusted, preferably by rotating the rotatably provided holding arm to change the portion where the holding arm and the plate to be corrected come into contact, and the holding arm can be moved away from the position where the upper cylinder and the lower cylinder face each other, so that the upper cylinder and the lower cylinder can be moved toward the periphery of the plate, and the distortion of the periphery can be corrected reliably. Furthermore, if the upper cylinder and the lower cylinder are provided with a mounting base attached to the ram of the cylinder and a swivel base rotatably connected to the mounting base, and a backing metal is placed on the swivel base and provided movably, the backing metal can be adjusted to fit the center of the portion to be corrected or to a position that appropriately surrounds the periphery, and whether the distortion is convex upward or concave downward, it is possible to correct the distortion without flipping the plate. [Brief description of the drawings]

[0010] [Figure 1] In order to facilitate understanding, hydraulic pumps, motors, control devices, piping, wiring, and other drive units and control devices are omitted as appropriate from this and the following drawings. [Diagram 2] Front view. [Diagram 3] An explanatory diagram of the main body frame as seen from the side. [Figure 4] An explanatory diagram of the upper cylinder part. [Diagram 5] An explanatory diagram of the lower cylinder part. [Figure 6] An explanatory diagram of the upper and lower cylinders aligned above and below the distortion correction area. [Figure 7] An explanatory diagram of the state in which the metal plate on the upper cylinder is aligned to the center of the distortion correction area of ​​the plate to be corrected, and the ram of the lower cylinder is raised to position the metal plates on the lower cylinder on both sides of the distortion correction area. [Figure 8] FIG. 8 is an explanatory diagram showing a state in which the ram of the upper cylinder is lowered from the state shown in FIG. 7 . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] FIG. 1 shows an embodiment of the present invention, in which a floor plate is shown as an example of a plate to be corrected for distortion, but distortions occurring during processing of various steel plates can also be corrected. The floor plate 1 is placed on a support frame 2, which has long frames 3 extending in parallel in the longitudinal direction, end frames 4 connecting both ends of the long frames 3, and leg frames 5 provided at the corners to make these frames stand up. By placing the side edges of the floor plate 1 on the long frames 3 of the support frame 2, the floor plate 1 is supported with a space below. The long frames 3 of the support frame 2 may directly place the edge of the floor plate 1, but preferably have holding arms 6 that support the edge of the floor plate from below. The holding arms 6 are rotatably provided so that the contact area between the holding arms 6 and the floor plate 1 can be changed. In the embodiment, the holding arm 6 has an approximately C-shaped, U-shaped or V-shaped arm portion which contacts the floor plate and has a retraction space 7 formed between them, and is provided with a rotating shaft 8 extending downward which is rotatably attached to an appropriate position on the long frame 3. When the area to be corrected is the flat surface of the floor plate 1, the entire surface of the holding arm 6 supports the floor plate, and when the area to be corrected is the edge of the floor plate 1, the holding arm 6 is rotated to bring the area to be corrected on the floor plate into correspondence with the retraction space 7, thereby releasing the upper and lower surfaces of the area to be corrected and allowing the correction process to be described below.

[0012] A main body frame 9 is provided around the outer periphery of the support frame 2. The main body frame 9 has an upper frame 10 located above the support frame 2, a lower frame 11 located below the support frame 2 facing the upper frame 10, and a leg frame 12 connecting both sides of the upper frame 10 and the lower frame 11 and standing along both sides of the support frame 2. The lower end of the leg frame 12 extends in the longitudinal direction, and leg wheels 13 are provided on both ends. The leg wheels 13 are engaged with ground rails 14 provided along the long frame 3, and the leg wheels 13 are rotated and driven by a travel motor 15 to move the main body frame 9 along the longitudinal direction of the support frame 2 and stop it at a desired position.

[0013] The upper frame 10 and the lower frame 11 are provided with an upper movable carriage 16 and a lower movable carriage 17, respectively, which move in a direction crossing the support frame portion 2. The upper movable carriage 16 and the lower movable carriage 17 are provided with carriage wheels 20, which run on upper rails 18 and lower rails 19 provided on the upper frame 10 and the lower frame 11. Referring to FIG. 4, an upper frame plate 21 constituting the upper rail 18 is fixed to the lower surface of the upper frame 10. The carriage wheels 20 are journaled on side plates 22 of the upper movable carriage 16, a lower plate 23 is fixed below the side plate 22, an upper base plate 24 is fixed between the lower plates 23 with mounting screws 27, an upper cylinder 25 is attached to the lower portion thereof, and the upper base plate 24 faces the upper frame plate 21. When the bogie wheel 20 runs on the upper rail 18, a predetermined upper gap 26 is formed between the upper base plate 24 and the upper frame plate 21. When the upper cylinder 25 is driven and pressurized, the upper base plate 24 is pressed upward and hits the upper frame plate 21, so that the load from the upper cylinder 25 can be transmitted to the upper frame 10. In addition, since the bogie wheel 20 rises by the amount of the upper gap 26, it is possible to prevent damage to the axle, etc.

[0014] 5, a lower frame plate 28 is provided on the upper part of the lower frame 11, and a lower rail 19 is fixed to the middle part. The carriage wheels 20 are journalled on a side plate 29 of the lower movable carriage 17, and an upper plate 30 is fixed to the upper part of the side plate 29. A lower base plate 32 for mounting a lower cylinder 31 is inserted below the upper plate 30, facing the lower frame plate 28. An insertion hole 33 is formed in the upper plate 30 and the lower base plate 32, and a lifting rod 35 having a head 34 that abuts against the lower surface of the lower base plate 32 is inserted into the insertion hole 33. A spring 37 is provided between the upper plate 30 and a holding nut 36 of the lifting rod 35 protruding above the upper plate 30, so that the lower base plate 32 is elastically lifted in a direction in which it contacts the upper plate 30, and a lower gap 38 is generated between the lower frame plate 28 and the lower base plate 32. When the lower cylinder 31 provided on the upper surface of the lower base plate 32 is not in a pressurized state, the lower gap 38 is present, and the bogie wheel 20 can run on the lower rail 19. When the lower cylinder 31 is in a pressurized state, a downward pressing force acts on the lower base plate 32, so that the lower base plate 32 is separated from the upper surface plate 30 and pressed downward, descending by the lower gap 38 and hitting the lower frame plate 28, and the load from the lower cylinder 31 is transmitted to the lower frame 11. In addition, since the pressing force does not directly act on the upper surface plate 30, the pressing force can be prevented from acting on the bogie wheel 20 attached to the side surface plate 29 via the upper surface plate 30, and damage to the axle, etc. can be prevented.

[0015] A mounting base 39 is fixed to each ram of the upper cylinder 25 and the lower cylinder 31, and a swivel base 40 is rotatably connected to the mounting base 39. A plurality of backing plates 41, two in this embodiment, are provided on the swivel base 40. The backing plates 41 are fitted to slide parts 42 provided on the swivel base 40 and are provided movably, and can be moved to an appropriate location depending on the distortion correction location and fixed in that position for use. For example, if the distortion portion of the sole plate 1 is convex upward, as shown in FIG. 6, the backing plate 41 on the upper cylinder 25 side is aligned with the center of the distortion convex part, and the backing plate 41 on the lower cylinder 31 side is positioned away from the center. As shown in FIG. 7, when the ram of the lower cylinder 31 is raised and stopped during correction, the backing plate 41 on the lower cylinder 31 side supports both sides of the convex part from below. Conversely, if the warped portion is concave downward, the backing plate 41 on the lower cylinder 31 side should be aligned to the center of the concave portion, and the backing plate 41 on the upper cylinder 25 side should be positioned away from the center of the concave portion so that they are located on both sides of the concave portion (not shown). Also, if the warped portion of the base plate 1 is oblique to the longitudinal direction of the base plate, the swivel base 40 should be rotated to adjust the position of the backing plate 41 so that it is aligned in line with the direction of the warp.

[0016] The upper moving carriage 16 and the lower moving carriage 17 are connected by a synchronous movement means so that the upper cylinder 25 of the upper moving carriage 16 and the lower cylinder 31 of the lower moving carriage 17 move synchronously while maintaining corresponding positions in the vertical direction. As the synchronous movement means, a piston cylinder mechanism or other appropriate mechanism can be used, but in the embodiment shown in the figure, the synchronous movement is achieved by chain drive. Explaining in detail with reference to Fig. 3, a connecting piece 43 is fixed to each of the upper moving carriage 16 and the lower moving carriage 17, and an upper chain 45 and a lower chain 46 which circulate via a sprocket 44 are provided in the upper frame 10 and the lower frame 11, respectively, and the ends of the upper chain 45 and the lower chain 46 are connected to the connecting pieces 43. A drive motor 47 is provided on the main frame 9, and the rotation of the drive motor 47 is transmitted to the upper chain 45 and lower chain 46 via a drive chain 48, a connecting chain 49, etc., so that the upper moving cart 16 and the lower moving cart 17 connected to the upper chain 45 and lower chain 46 via the connecting piece 43 move synchronously by equal amounts.

[0017] With the above-mentioned configuration, the floor plate 1 to be corrected is placed horizontally on the holding arm 6 of the support frame 2, and the main frame 9 is moved in the longitudinal direction of the support frame 2 by the travel motor 15 of the main frame 9 to the lateral direction of the distortion correction location. Next, the upper movable carriage 16 is moved directly above the distortion correction location by the drive motor 47. At this time, the lower movable carriage 17 moves at the same time and waits below the distortion correction location. When the distortion correction location is at the edge of the floor plate 1, the ram of the lower cylinder 31 provided on the lower movable carriage 17 is raised to lift the floor plate 1, and in that state, the holding arm 6 is rotated to retract the arm piece of the holding arm 6 to a position that does not interfere with the distortion correction. The upper cylinder 25 and the lower cylinder 31 are individually driven and controlled by a control circuit (not shown), and the movement of the ram on one cylinder side is stopped at the appropriate time, and the ram on the other cylinder side is moved up and down to apply pressure to the distortion correction location and correct the distortion.

[0018] For example, when the distortion is upwardly convex, the position of the backing plate 41 is adjusted so that it contacts both sides of the lower surface of the distorted part of the sole plate, and the movement of the ram of the lower cylinder 31 is stopped. Then, by aligning the backing plate 41 on the upper cylinder 25 side with the center of the convex part and lowering the ram of the upper cylinder 25, the distorted part in the state where the lower surface is held by the lower cylinder 31 as shown in FIG. 8 is corrected to be flat. When the distortion is downwardly concave, the backing plate 41 on the upper cylinder 25 side is positioned away from the center, and the movement of the ram of the upper cylinder 25 is stopped with the backing plate positioned on both sides of the concave part. Then, by raising the ram of the lower cylinder 31 and applying pressure to the center of the concave part while aligning the backing plate 41 on the lower cylinder 31 side with the center of the concave part, the distorted part in the state where the upper surface is held by the ram of the upper cylinder 25 is corrected to be flat. As described above, the present invention can be applied to not only distortions occurring in sole plates, but also distortions occurring during processing of various steel plates in a similar manner to correct distortions. [Explanation of symbols]

[0019] 1 bottom plate 2 Support frame 6 Holding Arm 9 Main frame 10 Upper Frame 11 Lower frame 12 Leg Frame 16 Upper moving cart 17 Lower moving cart 18 Upper rail 19 Lower rail 25 Upper Cylinder 31 Lower Cylinder 39 Mounting stand 40 Swivel table 41 Backing

Claims

1. A support frame portion that supports the periphery of the plate to be corrected while leaving a space below; A main body frame is provided which surrounds the outer periphery of the support frame and is movable along the longitudinal direction of the support frame, the main body frame has an upper frame located above the support frame portion, a lower frame facing the upper frame and located below the support frame portion, and leg frames connecting both sides of the upper frame and the lower frame and standing along both sides of the support frame portion, The upper frame and the lower frame are provided with an upper movable carriage and a lower movable carriage, respectively, which are movable in a direction crossing the support frame portion, The upper moving carriage is provided with an upper cylinder, The lower moving carriage is provided with a lower cylinder, a synchronous moving means for connecting the upper moving carriage and the lower moving carriage so that the upper cylinder of the upper moving carriage and the lower cylinder of the lower moving carriage move synchronously while maintaining corresponding positions in the vertical direction; The support frame is provided with a holding arm that supports the edge of the plate to be corrected from below, and the holding arm is provided rotatably so that the portion that contacts the plate can be changed. A plate distortion correction device characterized by the above.

2. 2. The plate distortion correction device according to claim 1, wherein said holding arm has an escape space formed between arm pieces that come into contact with said plate to be corrected.

3. 3. The plate distortion correction device according to claim 1 or 2, wherein the upper cylinder and the lower cylinder are provided with a mounting base fixed to the ram of each cylinder and a swivel base rotatably connected to the mounting base, a metal strip is placed on the swivel base, and the metal strip is movably mounted on the swivel base.

4. 2. The plate distortion correction device according to claim 1, wherein the upper movable carriage has carriage wheels that run on upper rails provided on the upper frame and an upper base plate to which the upper cylinder is attached, and the upper base plate faces an upper frame plate provided on the underside of the upper frame with an upper gap therebetween.

5. 2. The plate distortion correction device according to claim 1, wherein the lower movable carriage has carriage wheels that run on a lower rail provided on the lower frame and an upper plate, a lower frame plate is provided on the upper part of the lower frame, and a lower base plate for mounting the lower cylinder is provided between the upper plate and the lower frame, and the lower base plate is elastically pulled up toward the upper plate so as to form a lower gap between the lower base plate and the lower frame plate.

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