JPH0133220Y2 - - 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 erection, 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. .

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 that has a chuck device in a fixed position and clamp devices on both left and right sides of the chuck device,
The chuck device includes a frame that can be driven in the front and back directions by a drive device, an elevating body that is provided on the frame and that can be driven in the vertical direction by another drive device, and a covered body that is attached to the elevating body. The clamping device includes a chuck adapted to grip the treated steel sheet pile and capable of being driven in a direction around the axis by a further drive device, each of the clamping devices including a frame movable from side to side, and a chuck adapted to grip the treated steel sheet pile. A steel sheet pile straightening machine including a clamp attached to a frame and adapted to grip a steel sheet pile to be treated.

Function Since the present invention has the above-mentioned configuration, the end of the steel sheet pile to be treated is supported or lightly gripped by the clamp of the clamp device on the required side, and the intermediate portion of the steel sheet pile is supported by the chuck of the chuck device, or Grasp it lightly,
When the elevating body of the chuck device is driven in the vertical direction by its drive device, or the frame of the chuck device is driven in the front-back direction by its drive device, the chuck of the chuck device is driven in the vertical direction or in the front-back direction. As a result, a pressing load can be applied to the steel sheet pile to be treated in the vertical 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 combining the vertical and longitudinal driving of the chuck 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.

In addition, in the present invention, the chuck of the chuck device grasps a desired portion of the steel sheet pile to be processed, and other desired portions of the steel sheet pile are supported or lightly gripped by the clamps of the clamping device on the desired side, and the chuck is then moved from there. If the driving device is used to rotate the steel sheet pile in a desired direction around the axis (not a full rotational movement), a twisting load can be applied to the steel sheet pile to be treated in the direction around the axis.

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

Furthermore, according to the present invention, while the torsional load is applied to the steel sheet pile to be treated, the chuck can be driven in any direction within a plane that intersects the axis of the steel sheet pile in the same manner as described above. 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. For this reason,
Three-dimensional deformation, which is a combination of bow bending and propeller-like torsion of steel sheet piles, can be corrected with a small number of treatments, about three times 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 steps, the Individual loads influence each other in a complex way,
New deformation occurs in 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.

The fact that the frames of the left and right clamping devices are movable left and right is useful for supporting or lightly grasping the optimal location for straightening steel sheet piles with the clamps of the device, and the chucks of the chuck device can be moved up and down, forward and backward, and diagonally as desired. Being able to displace in the direction is useful for applying a load for strain correction to the steel sheet pile to be treated at an optimal location.

Effects of the Invention As described above, the present invention has the effect of not only correcting bow-like bends in steel sheet piles, but also effectively correcting three-dimensional deformations in which such bends are further compounded by propeller-like torsion.

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

With the chuck device 1 in place, the clamp device 13
are placed on both left and right sides of the chuck device 1.

The chuck device 1 includes a frame 12, the frame 1
2, and a chuck 1' attached to the elevating body 8. The frame 12
can be driven in the front and rear directions (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. The hydraulic cylinder 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 rotatably fitted into a cylindrical support 9 on the lifting body 8. 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.
I'm starting to grasp it. The chuck main body 4 has a side wall 5 on the inside that "butts" against the steel sheet pile to be treated. The movable jaw 3 is driven by a suitable drive device, such as a hydraulic cylinder plunger device 6, attached to the chuck body 4. Above frame 1
2. The assembly structure of the elevating body 8 and the chuck 1' is illustrated in FIG.

The chuck device 1 may be of a fixed position type (FIG. 1) or of a type that can be moved in the left and right direction (FIG. 4). In the case of the latter type, movement from side to side may be effected by an appropriate drive device, such as a hydraulic cylinder/plunger device 28. The hydraulic cylinder/plunger device 28 is attached to a base 27 of the chuck device 1, and the base 27 is mounted on guide rails 17, 17 to be slidable left and right. The horizontal movement of the chuck device 1 may be replaced by a manual method.

The chuck device 1 is a single installed type (Figures 1 and 4)
Alternatively, it may be an installed type in which a plurality of units are arranged side by side on the left and right (Fig. 7). If multiple chuck devices 1 are installed in parallel on the left and right, each chuck device 1 is connected to its base 2.
7 is mounted on the guide rail 17 so as to be movable left and right, and is made to move left and right by an appropriate means such as a hydraulic cylinder/plunger device 28. 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 clamping devices 13, 13 includes a frame 18 and a clamp 13' attached to the frame 18. The frame 18 is
It is slidably mounted on parallel guide rails 17, 17 extending horizontally in the left-right direction on both the left and right sides of the chuck device 1. The frame 18 is also mounted on a truck 19 via a rubber cushion 20. Alternatively, the frame 18 may be of the mounting type shown in FIG. 6 in which the truck 19 is omitted. The truck 19 rides on the parallel guide rails 17, 17, and is driven by a motor 21 installed on the truck 19 through a transmission mechanism 22.
The wheels 23 are driven. The frame 18 is moved left and right as the trolley 19 travels. The clamp 13' has a clamp body 16 fixed to a frame 18. The clamp 13' also includes a fixed jaw 14 and a movable jaw 15, each of which is removable and is attached to the clamp body 16.
5 grips the steel sheet pile a to be treated. The movable jaw 15 is driven by a suitable drive device attached to the clamp body 16, such as a hydraulic cylinder plunger device 26. The assembly structure of the frame 18 and clamp 13' described above is illustrated in FIG.

The rubber cushion 20 has rails 17, 17
Together with the support of the clamp 13' by the frame 18 above, an overload is applied to the wheels 23 as a dynamic load when the clamp device 13 moves left and right while the steel sheet pile a to be treated is gripped by the clamp 13'. to prevent

Instead of the above method, the clamp device 13 may be moved from side to side using a hydraulic cylinder/plunger device 29 (FIG. 4). The hydraulic cylinder plunger device 29 is mounted on the base 30 of the clamp device 13.

If necessary, a lifter is arranged adjacent to one or both sides of the clamping devices 13, 13. This lifter is shown schematically at 24 in FIG. The lifter 24 may be of any suitable type, such as a pantograph type. lifter 2
4 is a suitable conveyor for conveying the steel sheet pile a to be treated;
For example, a roller conveyor 25 is provided.

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) A steel sheet pile that has been deformed into an arched shape is placed in the space facing the jaws 14 and 15 of one clamp 13', in the space facing the jaws 2 and 3 of chuck 1', and in the space opposite the jaws 2 and 3 of the other clamp 13'. It passes through a distortion straightening machine while extending into the opposing space between the jaws 14 and 15. If necessary, the chuck 1' is preliminarily displaced to a desired position in the transverse direction of the axis of the steel sheet pile by the hydraulic cylinder/plunger device 7, 7 and/or 11.
13' supports or lightly grips the end of the steel sheet pile. The chuck 1' does not have to grip the steel sheet pile.
At this time, if necessary, the clamp devices 13, 13 are displaced left and right so as to occupy the optimum position relative to the steel sheet piles. If the chuck device 1 is also of the left-right movable type, it is displaced left and right as necessary so as to occupy the optimum position with respect to the steel sheet pile.

Next, the elevating body 8 is moved in a direction in which the arched bend of the steel sheet pile to be processed is reversed by the hydraulic cylinder plunger devices 7, 7, the hydraulic cylinder plunger device 11, or the hydraulic cylinder plunger devices 7, 7 and 11. The steel sheet pile is driven to the required degree, that is, to a degree corresponding to applying reverse bending to the steel sheet pile slightly beyond its normal shape before deformation.

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

Example 2 (Correction of deformation that combines bow bending and propeller-like twist) A steel sheet pile is passed through a strain straightening machine in the same manner as described in Example 1. If necessary, the chuck device 1' is previously displaced to a desired position in the direction transverse to the axis of the steel sheet pile in the same manner as in Example 1. Clamps 13', 13' support or lightly grip the ends of the steel sheet piles, and chucks 1' firmly grip the required portions of the steel sheet piles. On this occasion,
If necessary, the clamp devices 13, 13 are displaced from side to side so as to occupy optimal positions relative to the steel sheet piles. If the chuck device 1 is also movable to the left and right,
If necessary, it is displaced to the left or right so that it occupies the optimal position relative to the steel sheet pile.

Next, the chuck 1' is rotated around the axis by the hydraulic cylinder/plunger device 10 to a required degree in the direction of reverse twisting the propeller-like twist of the steel sheet pile to be treated, that is, the reverse twist is slightly beyond the original normal shape of the steel sheet pile. It is driven by an amount corresponding to the amount of force applied.

With the steel sheet pile reversely twisted, the elevating body 8 is driven in the same manner as described in Example 1 to the required degree in a direction that reverses the arching of the steel sheet pile to be treated.

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', and while the torsion load is applied, a pressing load of the required degree is applied in the required direction, resulting in bow bending and propeller-like twisting. The combined deformity 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.

Example 3 (Correction of deformation in which the bottom plate or web of a steel sheet pile is curved in the width direction) Concave groove 3 in the center of one joint of chuck 1'
1, and apply a chevron-shaped cross section to the other jyo, and press the web between the two jyos to correct the curvature.

Example 4 (Correction of deformation in which the side wall of a steel sheet pile, that is, the flange, partially protrudes outward) Open the jaws 2 and 3 of the chuck 1', apply the deformed part of the flange to the desired side wall of the chuck body 4, and then 12 is driven in a required direction to a required degree by a hydraulic cylinder/plunger device 11 serving as a back-and-forth drive device to correct the deformation.

In any of the above distortion correction examples, the jaws 2 and 3 of the chuck 1' and the jaws 14 and 1 of the clamp 13'
5 has various shapes 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 drawings]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a front view of the chuck device in the embodiment of FIG. 1 (a side view equivalent to FIG. 1), and FIG. 3 is a front view of the clamp device in the same embodiment (a side view equivalent to FIG. 1). FIG. 4 is a front view showing another example of implementation;
Figure 5 is a front view (side view equivalent to Figure 4) showing the mounting structure of the chuck device base in the embodiment shown in Figure 4, and Figure 6 is the mounting structure of the clamp device base in the embodiment shown in Figure 4. FIG. 4 is a front view (a side view corresponding to FIG. 4). FIG. 7 is a front view showing still another example of implementation, FIG. 8 is a front view of the lifter, and FIG. 9 is a plan view thereof. 1...chuck device, 1'...chuck, 2...
... Fixed jaw of the chuck, 3... Movable jaw of the chuck, 7... Hydraulic cylinder/plunger device as a drive device for driving the elevating body up and down, 8...
Lifting body, 10...Hydraulic cylinder/plunger device as a drive device for driving the chuck around the axis, 11...Hydraulic cylinder/plunger device as a drive device for driving the frame of the chuck device back and forth, 12...Chuck device frame, 13
...Clamp device, 13'...Clamp, 18...
...Frame of clamping device.

Claims (1)

[Scope of utility model registration request] A steel sheet pile distortion straightening machine that has a chuck device in a fixed position and clamp devices on both left and right sides of the chuck device,
The chuck device includes a frame that can be driven in the front and back directions by a drive device, an elevating body that is provided on the frame and that can be driven in the vertical direction by another drive device, and a covered body that is attached to the elevating body. The clamping devices each include a chuck adapted to grip the treated steel sheet pile and movable in a direction about the axis by a further drive, each of the clamping devices being movable from side to side and driven by the drive. A steel sheet pile straightening machine that includes a frame that can be driven in the front-back direction and a clamp that is attached to the frame and configured to grip a steel sheet pile to be treated.