JPH0133221Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a steel sheet pile straightening machine.

Steel sheet piles are said to have a grooved cross-sectional shape, but
Usually, they are used repeatedly, and it is difficult to avoid deformation due to repeated installation, pulling out, and recovery at the construction site. Deformed steel sheet piles cannot be reused unless the deformation is corrected.

The deformation of steel sheet piles due to repeated use is not limited to bow-like bending, but also three-dimensional deformation that is compounded by propeller-like twisting.

BACKGROUND ART AND PROBLEMS Conventionally, no straightening machine has been developed that can effectively correct the three-dimensional deformation of steel sheet piles, which is a combination of bow bending and propeller-like torsion. By the way, conventionally,
The reality is that presses and press brakes are used for steel sheet pile straightening machines. Presses and press brakes are not effective in correcting the three-dimensional deformation of steel sheet piles, and can only correct the distortion of steel sheet piles that have been deformed into a bowed shape.

The purpose of the present invention is to provide a steel sheet pile distortion straightening machine that can not only correct bow-like bends in steel sheet piles, but also effectively correct three-dimensional deformations in which such bends are further compounded by propeller-like torsion. .

A further object of the present invention is to provide a steel sheet pile strain straightening machine with a wide range of appropriate strain straightening.

Means for Solving the Problems The above object of the present invention is achieved by a steel sheet pile straightening machine having the following configuration.

A steel sheet pile distortion straightening machine in which a first chuck device is arranged at a fixed position and a second chuck device is arranged on both left and right sides thereof, and the first chuck device can be driven in the front and rear direction by a drive device. a frame, an elevating body that is provided on the frame and can be driven in the vertical direction by another drive device, and a further drive that is attached to the elevating body and is adapted to grip the steel sheet pile to be processed. The device includes a chuck that can be driven in a direction around an axis, and a second
Each of the chuck devices includes a frame that can move left and right and can be driven in the front and rear directions by a drive device, an elevating body that is provided on the frame and can be driven in the up and down direction by another drive device, and A steel sheet pile straightening machine, which includes a chuck which is attached to the elevating body and configured to grip the steel sheet pile to be treated, and which can be driven in a direction around an axis by a separate drive device.

Function Since the present invention has the above configuration, the end of the steel sheet pile to be treated is supported or lightly gripped by the chuck of the second chuck device on the required side, and the intermediate portion of the steel sheet pile is held by the chuck of the first chuck device. When supported by a chuck or lightly gripped, the elevating body of the first chuck device is driven vertically by its driving device, or the frame of the first chuck device is driven in the front-back direction by its driving device. The chuck of the first chuck device is driven up and down or in the front-back direction, thereby applying a pressing load to the steel sheet pile to be treated in the up-down direction or the front-back direction. Further, it is also possible to apply a pressing load in an oblique direction to the steel sheet pile by a combination of vertical and longitudinal driving of the chuck of the first chuck device by the vertical movement of the elevating body and the longitudinal movement of the frame. Since the diagonal pressing load is applied by a combination of vertical and longitudinal driving of the chuck, it can be applied at any angle by regulating the amount of driving in these two directions.

The respective pressing loads described above contribute to correcting the arched bending of the steel sheet pile.

Furthermore, in the present invention, the chuck of the first chuck device grips a desired portion of the steel sheet pile to be treated, and the chuck of the second chuck device on the desired side supports or lightly grips other desired portions of the steel sheet pile. Then, if the chuck of the first chuck device is driven to swing in the desired direction around the axis by its drive device (not a full rotation movement), this will apply a twisting load to the steel sheet pile to be treated in the direction around the axis. can be loaded.

This torsion load is useful for correcting the propeller-like twist of the steel sheet pile.

Furthermore, in the present invention, while the torsional load is applied to the steel sheet pile to be treated, the chuck of the first chuck device is driven in an arbitrary direction within a plane crossing the axis of the steel sheet pile in the same manner as described above. I can do it. This makes it possible to combine the torsional load on the steel sheet pile and the pressing load in the transverse direction of the axis. Therefore, the three-dimensional deformation of the steel sheet pile, which is a combination of bow bending and propeller-like torsion, can be corrected with a small number of treatments, about three or less.

Steel sheet piles have a grooved cross-section, which makes them difficult to plastically deform. Therefore, if the application of a pressing load in the required direction to correct the arched bend and the application of a reverse twisting load to correct the propeller-like twist are performed in separate single steps, the The individual loads affect each other in a complicated manner, causing new deformation of the steel sheet pile to be treated, and the required degree of correction cannot be obtained with a small number of treatments, such as about three times or less.

Unlike this, in the present invention, as described above, while a twisting load is applied to the steel sheet pile in the direction around the axis, a pressing load can be applied to the steel sheet pile in the direction transverse to the axis. There are no problems with deformation.

As shown above, each of the second chuck devices has the same configuration as the first chuck device in terms of the structure and function of the chuck and the elevating body, and the longitudinal movability of the frame. That is, the chucks of the second chuck device have the same structure as the chucks of the first chuck device in terms of the function of applying a strain correction load to the steel sheet pile. Therefore, the bowing correction load and the reverse twisting load on the steel sheet pile can be applied to the ends of the steel sheet pile by the second chuck device, and by operating the chucks of the first and second chuck devices together, It is also possible to apply a bow correction load and a reverse twist load. Therefore, the suitability range of the strain correction of the present invention is wider than that in which the strain correction load can be applied only to the middle part of the steel sheet pile.

The fact that the frame of the second chuck device is movable from side to side helps the chucks of the device to support or lightly grasp the optimal location for straightening the distortion of the steel sheet pile, and the chucks of the first and second chuck devices can be moved up and down. ,
The fact that it can be displaced in any direction, forward or backward or diagonally, is useful for applying a load for strain correction to the steel sheet pile to be treated at the optimum location.

Effects of the invention As described above, according to the invention, it is possible to effectively correct not only bow-like bends in steel sheet piles, but also three-dimensional deformations in which such bends are further compounded by propeller-like torsion, and it is also possible to correct wide distortions. The effect of obtaining an appropriate range is brought about.

Embodiments Next, embodiments of the present invention will be described with reference to the accompanying drawings.

The same reference numerals indicate the same parts throughout the figures.

The first chuck device 1 is placed in a fixed position, and the second chuck device 13 is placed on both left and right sides of the first chuck device 1.

The first chuck device 1 includes a frame 12, an elevating body 8 provided on the frame 12, and a chuck 1' attached to the elevating body 8. The frame 12 can be driven in the longitudinal direction (left and right in FIG. 2) by a suitable drive device, such as the hydraulic cylinder plunger device 11. The hydraulic cylinder/plunger device 11 is connected at one end to the frame 12 and at the other end to a fixed part of the straightening machine base. The elevating body 8 is mounted on the frame 12 so as to be driven in the vertical direction by a suitable drive device, for example, hydraulic cylinder plunger devices 7, 7. Hydraulic cylinder
The plunger devices 7, 7 are connected to the elevating body at one end and to the frame 12 at the other end. The chuck 1' can be driven around its axis by a suitable drive device, for example a hydraulic cylinder plunger device 10. The hydraulic cylinder/plunger device 10 is pivotally connected to the elevating body 8 at one end and to the cylindrical chuck body 4 at the other end. The chuck body 4 is an elevating body 8
It is rotatably fitted into the upper cylindrical support 9. The chuck 1' includes a fixed jaw 2 and a movable jaw 3, each of which is attached to a chuck body 4 and is removable, and the jaws 2 and 3 are adapted to grip the steel sheet pile a to be treated. Chuck body 4
has a side wall 5 on the inside that "hits" against the steel sheet pile to be treated. The movable jaw 3 is driven by a suitable drive device attached to the chuck body 4, such as a hydraulic cylinder.
It is driven by a plunger device 6. The assembly structure of the frame 12, elevating body 8 and chuck 1' described above is illustrated in FIG.

The first chuck device 1 is of a stationary type (the first
(Fig. 3) or a form that can move in the left and right direction (Fig. 3). In the case of the latter type, movement from side to side may be effected by an appropriate drive device, for example, the hydraulic cylinder plunger device 17.
The hydraulic cylinder/plunger device 17 is attached to a base 23 of the chuck device 1, and the base 23 is mounted on guide rails 19, 19 so as to be slidable left and right. The horizontal movement of the chuck device 1 may be replaced by a manual method.

The first chuck device 1 is a single installed type (first,
(Fig. 3) or an installed type (Fig. 5) in which multiple units are arranged side by side on the left and right. When a plurality of chuck devices 1 are installed in parallel on the left and right, the base 23 of each chuck device 1 is mounted on guide rails 19, 19 so as to be movable left and right, and the hydraulic cylinder/plunger device 1
It is made to move left and right by an appropriate means such as 7. When the chuck device 1 is of a type in which a plurality of left and right chuck devices are installed in parallel, it is possible to cope with complex bending of the steel sheet pile, for example, deformation with two arched bends.

Each of the second chuck devices 13, 13 is
The configuration is the same as that of the first chuck device 1 except that the frame 18 corresponding to the frame 12 in the first chuck device 1 is movable left and right. That is, each of the second chuck devices 13, 13 is provided on a frame 18 which can be driven in the front-rear direction by a suitable drive device, for example, a device similar to the device 11, and the first
A lifting body having the same structure and function as the lifting body 8 of the chuck device 1, and a first lifting body attached to the lifting body.
It includes a chuck having the same structure and function as the chuck 1' of the chuck device 1 shown in FIG. Since the second chuck devices 13, 13 have such a structure, illustrations of the assembly structure of the frame, elevating body, and chuck (a view corresponding to FIG. 2) are omitted. The horizontal movement of the frames 18, 18 of the chuck devices 13, 13 is achieved by the same means as in the frame 12 of the chuck device 1, that is, by the hydraulic cylinder plunger device 1.
7.17.

If necessary, a lifter is arranged adjacent to the side of each or one of the second chuck devices 13, 13. This lifter is shown schematically at 20 in FIG. The lifter 20 may be of any suitable type, such as a pantograph type. The lifter 20 is equipped with a suitable conveyor, for example a roller conveyor 21, for conveying the steel sheet pile a to be treated.

Specific specifications for straightening steel sheet piles using the strain straightening machine of the present invention are as follows, with reference to the reference numerals shown in the drawings.

Example 1 (Correction of arched bending) Steel sheet piles that have been deformed into arched bends are passed through a strain correcting machine in a state where they extend into the opposing spaces of the chucks 2 and 3 of the first and second chuck devices 1, 13, and 13. . If necessary, the chucks of chuck devices 1, 13, 13 can be connected to hydraulic cylinder/plunger devices 7, 7.
and/or 11, the ends of the steel sheet piles are supported or lightly gripped by the chucks of the second chuck devices 13, 13, which are previously displaced to a desired position in the direction transverse to the axis of the steel sheet piles. First chuck device 1
The chuck 1' does not have to grip the steel sheet pile. At this time, if necessary, the second chuck device 13,1
3 is displaced left and right so as to occupy the optimum position relative to the steel sheet pile. If the first chuck device 1 is also movable to the left and right, it is displaced to the left and right as necessary so as to occupy the optimum position with respect to the steel sheet pile.

Next, the lifting body 8 of the first chuck device 1 is moved by the hydraulic cylinder plunger devices 7, 7, or by the hydraulic cylinder plunger device 11, or by the hydraulic cylinder plunger devices 7, 7 and 1.
1, the steel sheet pile to be processed is driven to a required degree in the direction of reverse bending, that is, a degree corresponding to applying reverse bending to the steel sheet pile slightly beyond the normal shape before deformation.

In this way, the chuck 1' of the first chuck device 1 applies a pressing load of the required degree in the above direction to the steel sheet pile, and the bowing is corrected. The degree of reverse bending may be appropriately determined by visual observation and feeling during correction. In order for deformed steel sheet piles to be suitable for reuse, it is not necessary to return them to their original shape very precisely.
It is sufficient if the deformation is corrected to a certain degree. If distortion correction is insufficient, re-correction is sufficient.

If desired, the second chuck devices 13, 13 may also be operated in the same manner as described for the first chuck device 1 to apply reverse bending loads to the steel sheet piles.

Example 2 (Correction of deformation that is a combination of bow bending and propeller-like twist) A steel sheet pile is passed through a strain straightening machine in the same manner as in Example 1. If necessary, the chucks of the chuck devices 1, 13, 13 are previously displaced to desired positions in the direction transverse to the axis of the steel sheet piles in the same manner as in Example 1. Second
The ends of the steel sheet piles are supported or lightly gripped by the chucks of the first chuck devices 13, 13, and the required portions of the steel sheet piles are firmly gripped by the chucks 1' of the first chuck device 1. At this time, if necessary, the second chuck devices 13, 13 are displaced to the left or right so as to occupy the optimum position with respect to the steel sheet piles. If the first chuck device 1 is also movable to the left and right, it is displaced to the left and right as necessary so as to occupy the optimum position with respect to the steel sheet pile.

Next, the chuck 1' of the first chuck device 1
The hydraulic cylinder/plunger device 10 is used to reverse the propeller-like twist of the steel sheet pile to be processed to the required degree around the axis, that is, the reverse twist is applied to the steel sheet pile slightly beyond its original normal shape. Degree driven.

With the steel sheet pile reversely twisted, the elevating body 8 of the first chuck device 1 is driven to a required degree in the direction of reversely bending the bowed bend of the steel sheet pile to be treated, in the same manner as described in Example 1.

In this way, a twisting load of the required degree is applied to the steel sheet pile in the required direction by the chuck 1' of the first chuck device 1, and while the twisting load is being applied, a pressing load of the required degree is applied in the required direction. , a deformation that is a combination of bow bending and propeller-like torsion is corrected. In this case, the degree of reverse twisting and degree of reverse bending may be appropriately determined by visual observation and feeling during correction.

If necessary, the second chuck devices 13, 13 may also be operated in the same manner as described for the first chuck device 1 to apply a reverse bending load and a reverse twisting load to the steel sheet pile.

Example 3 (Correction of deformation in which the bottom plate or web of a steel sheet pile is curved in the width direction) A chuck with a concave groove 22 in the center is applied to one of the chucks of the chuck device 1 or 13, 13, and the other chuck is Apply a chevron-shaped cross section,
The web is clamped between both jaws to correct the curvature.

Example 4 (Correction of deformation in which the side wall or flange of a steel sheet pile partially protrudes outward) Open the chuck jaw of chuck device 1 or 13, 13, and apply the deformed part of the flange to the desired side wall of the chuck body. The deformation is corrected by driving the frame 12 or 18 in a desired direction to a desired degree by a hydraulic cylinder/plunger device serving as a longitudinal drive device.

In any of the above distortion correction examples, the jaws 2 and 3 of the chuck 1' of the first chuck device 1 and the jaws 2 and 3 of the chuck of the second chuck device 13 and 13 are
Various shapes are prepared according to the cross-sectional shape of the steel sheet pile to be treated, and can be used appropriately depending on the corresponding shape.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a front view of the first chuck device in the embodiment of FIG. 1 (a view corresponding to the side view of FIG. 1), and FIG. 3 is a front view showing another example of the embodiment. Fig. 4 is a front view (a side view equivalent to Fig. 3) showing the mounting structure of the first chuck device base in the embodiment shown in Fig. 3, and Fig. 5 is a front view showing yet another example of implementation. , FIG. 6 is a front view of the lifter, and FIG. 7 is a plan view thereof. 1... first chuck device, 1'... chuck of the same device, 2... fixed jaw of the same chuck, 3...
...Movable jaw of the same chuck, 7...Hydraulic cylinder/plunger device as a drive device for vertically driving the elevating body of the first chuck device, 8...Elevating body of the first chuck device, 10...First Hydraulic cylinder/plunger device as a driving device for driving the chuck of the chuck device around the axis, 11...
...Hydraulic cylinder plunger device as a driving device for driving the frame of the first chuck device back and forth, 12...Frame of the first chuck device, 1
3... Second chuck device, 18... Frame of the second chuck device.

Claims (1)

[Scope of utility model registration request] A steel sheet pile distortion straightening machine in which a first chuck device is arranged at a fixed position and a second chuck device is arranged on both left and right sides thereof, and the first chuck device can be driven in the front and rear direction by a drive device. a frame, an elevating body that is provided on the frame and can be driven in the vertical direction by another drive device, and a further drive that is attached to the elevating body and is adapted to grip the steel sheet pile to be processed. The device includes a chuck that can be driven in a direction around an axis, and a second
Each of the chuck devices includes a frame that can move left and right and can be driven in the front and rear directions by a drive device, an elevating body that is provided on the frame and can be driven in the up and down direction by another drive device, and A steel sheet pile straightening machine, which includes a chuck which is attached to the elevating body and configured to grip the steel sheet pile to be treated, and which can be driven in a direction around an axis by a separate drive device.