JPH07315760A - Hanging wire removing device in unloaded steel sheet pile - Google Patents

Abstract

PURPOSE:To facilitate removing of a hanging wire by temporarily highly supporting one end of a steel sheet pile by a rise/fall capably supported bearing part, in a removing device arranged in a groove in one end side of the steel sheet pile positioned in a lower side, in the case of unloading the steel sheet pile suspended by a hanging wire. CONSTITUTION:In the case of unloading a separate steel sheet pile 32 so as to be piled on the existing steel sheet pile 30 placed on the ground, a removing device 10 is placed in one end side of the steel sheet pile 30 already placed on the ground. Here is lifted the other end side of a lever plate 20, to vertically provide four constitutional members 11, 13, 20, 24 in an almost triangular shape. In this condition, the second steel sheet pile 32 is unloaded so as to be piled and supported by a bearing part 15 of the removing device 10 in one end side of the steel sheet pile. After a hanging wire 33 is removed from the second steel sheet pile 32, by turning the lever plate 20 by pulling a pull rope 27 connected to an upper end side of the plate, a supporting plate 24 is turned to be laid in almost horizontal, so as to draw out, in this condition, the removing device 10 to the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing a hanging wire when a steel sheet pile is loaded. More specifically, for example, a steel sheet pile used for earth retaining is hung by a hanging wire by a crane and already pulled out. The present invention relates to a hanging wire removing device for stacking and placing a load on a steel sheet pile placed on the ground.

[0002]

2. Description of the Related Art A steel sheet pile, which is driven into the ground for retaining soil at a construction site or the like, has both side walls formed of curved surfaces which are slightly bulged outward as shown in FIG. It is already well known that some of them have a U-shape.

Such steel sheet piles are sequentially withdrawn by a crane or the like and removed when they finish their role as soil retaining. As a method at that time, the end of the lifting wire is looped and hung on the upper end of the steel sheet pile protruding from the ground, the wire is pulled up and the steel sheet pile is pulled out from the ground and hung, and it is placed at the appropriate place on the construction site. The steel sheet pile is moved down to the ground side with the groove side up. Then, other steel sheet piles are sequentially pulled out by this method, and stacked on each other on the steel sheet piles that have been previously lowered to the ground. Stacking steel sheet piles in this way is called "loading steel sheet piles."

However, when the steel sheet pile is suspended by the above-mentioned method and placed on the ground, there is a problem that the looped end of the suspension wire cannot be removed from the steel sheet pile. That is, not only steel sheet piles but also steel materials such as bars are piled up on top of each other. become unable.

Particularly, in the case of a steel sheet pile, as shown in FIG. 5, it is usually stacked such that the protruding side of the upper steel sheet pile is fitted in the groove of the lower steel sheet pile. At that time, since the lower half of the upper steel sheet pile fits in the groove of the lower steel sheet pile, the hanging wire was strongly sandwiched between the steel sheet piles, so it could not be easily removed. Therefore, conventionally, a spacer made of wood or steel material is put on a steel sheet pile and loaded, and finally the spacer is removed to load the steel sheet pile.

[0006]

However, in such a conventional steel sheet pile loading method, the last spacer removing operation is extremely dangerous, and the crane loss time also causes a reduction in economic efficiency. There was a problem to say.

The object of the present invention is to solve the above-mentioned conventional problems, and to remove the hanging wire from the steel sheet pile safely, efficiently and economically during the work of loading the steel sheet pile. An object of the present invention is to provide a device for removing a hanging wire when a steel sheet pile is loaded.

[0008]

The present invention is a device for removing a hanging wire when a steel sheet pile is loaded, and has the following structure in order to solve the above-mentioned technical problem. That is, the hanging wire removing device 10 at the time of loading the steel sheet pile of the present invention includes a bottom plate 11, a steel sheet pile supporting member 13 whose lower end portion is pivotally attached to one end side of the bottom plate 11, and the other of the bottom plate 11. A lever member 20 having one end pivotally attached to the end side, and a support member 24 having one end pivotally attached to the upper end side of the steel sheet pile supporting member 13 and capable of supporting the steel sheet pile supporting member 13 in an inclined state,
Locking portion 2 provided on the one end side of the lever member 20
2a, when the lever member 20 is standing upright with respect to the bottom plate 11, the other end of the support member 20 is locked to exert an action force for tilting the lever member 20 toward the support member 24 side, The lever member 20 is the bottom plate 11
When the support member 2 is rotated about the pivotally attached portion and is tilted horizontally to the side opposite to the support member 24, the support member 2 is disengaged from the engaging portion 22a and extends along the surface of the lever member 20.
4 is provided with a locking portion 22a capable of moving the other end of the supporting member 24 and tilting the supporting member 24 substantially horizontally.
0 stands up with respect to the bottom plate 11 and the supporting member 2
Dimension in which the bottom plate 11, the steel sheet pile supporting member 13, and the supporting member 24 form a triangle when the other end of 4 is engaged with the locking portion 22a formed on the lever member 20. It is characterized by being constituted by a relationship (corresponding to claim 1). Hereinafter, each constituent element will be described individually.

(Bottom Plate) The bottom plate 11 supports a steel sheet pile supporting member 13 and a lever member 20 which will be described later, and preferably has a certain surface area for stability, and is therefore made of a metal plate such as an iron plate. Preferably.

(Steel sheet pile supporting member) One end of the steel sheet pile supporting member 13 is pivotally attached to one end of the above-mentioned bottom plate, and can be tilted about this one end pivotal portion. When the steel sheet pile supporting member 13 is in a state of being inclined with respect to the bottom plate, the other end portion is located above the bottom plate 11, and the steel sheet pile 32 suspended by the suspension wire 33 is attached to the other end portion ( It is temporarily supported by the carrying unit 15). Since the steel sheet pile supporting member 13 directly supports the steel sheet pile 32, the steel sheet pile supporting member 13 is also preferably formed of a metal member having high strength.

(Supporting member) The supporting member 24 supports the steel sheet pile supporting member 13 in an inclined state, and one end thereof is pivotally attached to the other end, that is, the upper end side of the steel sheet pile supporting member 13. Therefore, when the other end of the steel sheet pile supporting member 13 is lifted by the supporting member 24 and is supported in an inclined state, the bottom plate 11, the steel sheet pile supporting member 13, and the supporting member 24 have a triangular shape. The dimensional relationship is designed to exhibit Further, it is preferable that the supporting member 24 is also made of metal in order to literally support a large acting force applied to the steel sheet pile supporting member 13.

(Lever Member) The support member 24 described above is
When the upper end portion of the steel sheet pile supporting member 13 is lifted and supported in an inclined state, the lower end thereof is fixedly supported. Then, when releasing the carrying of the steel sheet pile 32 by the steel sheet pile supporting member 13, the carrying member 13 is changed from the inclined state to the horizontal state, but in that case, the lower end of the supporting member 24 is immovable. The state is released so that it can move in a substantially horizontal plane. The lever member 20 is provided as a means for locking or releasing the lower end of the support member 24 in a stationary state.

One end of the lever member 20 is rotatably attached to the other end of the bottom plate, so that the lever member 20 can also be tilted. Therefore, this lever member 2
0 is provided with a locking portion 22a. This locking portion 22
a is for locking the other end of the support member 24 when the lever member 20 stands up against the bottom plate 11, and
Is applied to the support member 24 side, and when the lever member 20 is rotated around the pivotal joint with the bottom plate 11 and is tilted horizontally to the side opposite to the support member 24, the support member 2
The lower end of 4 is disengaged from the engaging portion 22a so that it can move along the surface of the lever member 20, so that the support member 24 can be raised or tilted substantially horizontally. ..

[0014]

According to the suspending wire removing device 10 for loading a steel sheet pile according to the present invention, the lever member 20 is first raised (this means that the lever member 20 is raised with respect to the bottom plate 11).
The lower end portion of the support member 24 is locked to the locking portion 22a and is supported in a raised state.

As a result, one end of the steel sheet pile supporting member 13 is lifted by the supporting member 24 and held in an inclined state, and the steel sheet pile supporting member 13 and the supporting member 24 are attached to the bottom plate 11.
Assembled in a substantially inverted V shape above. The hanging wire removing device 10 assembled in such a state
Is one end side groove 31 of the steel sheet pile 30 already placed on the ground.
Inside, the lever member 20 is arranged so as to face the outer side of the end of the steel sheet pile 30.

In this way, when the steel sheet pile is ready to be loaded, the loop portion 33 at the tip of the lifting wire is hung on the projecting end of the steel sheet pile used for earth retaining from the ground. Then, the steel sheet pile 32 is pulled out from the ground and is loaded on the steel sheet pile 30 placed on the ground in alignment with its longitudinal direction as described above.

At that time, one end portion of the steel sheet pile 32 on which the load is placed has a lower surface side protruding portion in the groove 31 of the steel sheet pile 30 on the lower side.
The other end of the steel sheet pile supporting member 13 in the hanging wire removing device 10
It is tilted as a whole because it is supported on the upper end of
Therefore, about half of the length of the stacked steel sheet piles 32 seems to be lifted upward from the lower steel sheet pile 30 and no mutual contact occurs.

Therefore, the loop portion 33 at the tip of the hanging wire is removed by utilizing the non-contact with the lower steel sheet pile 30 due to the inclined arrangement of the load-carrying steel sheet pile 32, and then the lever member 20 of the hanging wire remover is attached. The string connected to the upper end side is pulled and rotated. Then, the steel sheet pile supporting member 1
The lower end portion of the support member 24 is supported by the acting force received by the support member 24 because the locking portion 22a that locks the lower end portion of the support member 24 that supports 3 opens the end portion movably in the horizontal direction. Is pushed horizontally on the lever member 20 and is tilted.

As a result, the steel sheet pile supporting member 13 loses its support and is laid down in a substantially horizontal state. as a result,
The steel sheet pile 32, the other end of which is supported by the steel sheet pile supporting member 13, has the lower surface side protruding portion fitted into the groove 31 of the lower steel sheet pile 30 over the entire length thereof, and the normal load It is placed. When the steel sheet pile 32 is normally loaded, a gap is formed between the upper and lower steel sheet piles due to its shape.

The hanging wire removing device 10 in which the steel sheet pile supporting member 13 is tilted substantially horizontally and the whole is in a flat state.
Is located in the gap between the bottoms of the steel sheet piles, whereby the suspension wire removal device 10 is pulled out of the gap, reassembled and placed in the groove of the previously loaded steel sheet pile. By repeating this, a large number of steel sheet piles are sequentially loaded in a state where the hanging wire can be safely and easily removed.

[0021]

The following is a more detailed description of the embodiment of the hanging wire removing device according to the present invention when the steel sheet pile is loaded. FIG. 1 shows a suspending wire removing device (hereinafter, simply referred to as a suspending wire removing device) 10 for loading a steel sheet pile according to an embodiment of the present invention in a so-called “assembled state” described later. The hanging wire removing device 10 includes a bottom plate 11 formed of a rectangular iron plate as shown in FIG. The bottom plate 11 is provided with bearings 12 on both sides of the upper surface at one end thereof by means of welding or the like.

On the bottom plate 11, a steel sheet pile supporting plate 13 which is a steel sheet pile supporting member is provided with a shaft portion 14 formed on both sides at one end side thereof on the bottom plate 11 as shown in FIGS. It is rotatably inserted and attached to the bearing portion 12. This steel sheet pile support plate 13 is also formed of an iron plate, and the other end side is provided with a support part 15 formed by being bent upward somewhat, and in order to maintain and reinforce the bent state of this support part 15. A rib 17 is provided on the steel sheet pile supporting plate 13 in a direction crossing the bending line 16.

Then, on the lower surface of the steel sheet pile supporting plate 13, the bearing portions 18 are positioned substantially on the above-mentioned bending line 16 and on both sides of the longitudinal centerline by suitable means such as welding. It is provided.

On the other hand, the bottom plate 11 is also provided with bearing portions 19 on both sides of the upper surface portion on the other end side by suitable means such as welding. A lever plate 20, which is a lever member as shown in FIGS. 1 and 3, is pivotally attached to the other end of the bottom plate 11 by utilizing this bearing portion 19. That is, the lever plate 20 is attached by rotatably inserting the shaft portions 21 integrally formed on both side portions of the lever plate 20 into the bearing portion 19.

Therefore, when both the lever plate 20 and the steel sheet pile supporting plate 13 are raised with respect to the bottom plate 11,
Both will face each other, but when one surface of the lever plate 20 facing the steel sheet pile supporting plate 13 at that time is an inner surface and the other surface is an outer surface, both sides on the inner surface are An elongated guide slot 23 is formed by fixing each U-shaped member 22 along the longitudinal axis of the lever plate 20 by welding or the like. This lever plate 2
The 0 and the U-shaped member 22 are also made of metal such as iron.

Support plates 24, which are support members, are arranged between the U-shaped members 22 provided on both sides of the inner surface of the lever plate 20, and the shaft portions 25 formed on both sides of one end of the support plate 24. Is movably inserted into a guide slot 23 defined by a U-shaped member 22. The support plate 24 is also made of an iron plate, and the shaft portion 26 is provided on both sides of the other end.
Is formed, and the shaft portion 26 is rotatably inserted into a bearing portion 18 provided on the lower surface of the steel sheet pile supporting plate 13 for bearing.

By the way, it is clear from the above description that the hanging wire removing device 10 is basically composed of the bottom plate 11, the steel sheet pile supporting plate 13, the lever plate 20, and the supporting plate 24. However, as shown in FIG. 1, each of these constituent members is formed in such a length that a bottom plate 11 is the bottom side and other constituent members 13 and 20, 23 are oblique sides. There is. The state in which the suspension wire removing device 10 is assembled into the triangle as described above is closely related to the usage of the device 10, and will be described in detail in the following description of the operation.

When the steel sheet pile supporting member 13 is laid down substantially horizontally, the supporting plate 24 is provided substantially in the center of the upper surface of the bottom plate 11.
There is provided a stopper 29 for supporting the position of the pivoting portion or the bearing portion 18 with respect to the base plate 11 so as to be located slightly above the position of the pivoting portion with the bottom plate 11, ie, the bearing portion 12. And
On the other end side of the outer surface of the lever plate 20, there is provided a ring portion 28 for connecting a towline 27 for rotating the lever plate 20. The towline 27 is used to transform the device 10 into a flat condition as shown in FIG. This point will also be described in detail in the description of the next operation.

As shown in FIGS. 1 and 5, the hanging wire removing device 10 constructed as described above has the lever member 20 in the groove 31 on one end side of the steel sheet pile 30 already placed on the ground. The steel sheet pile 30 is arranged so as to face the outer side of the end. At this time, the device 10 may be arranged in an assembled state as shown in FIG. 1 in advance, but here, a case will be described in which the device 10 is arranged in a flat state as shown in FIG. 4 and then assembled.

As shown in FIGS. 3 and 4, the lever plate 20 which is in the horizontal state is lifted at the other end side,
It is raised while being rotated around the shaft portion 21 on one end side thereof. Then, the guide slot 23 provided on the inner surface of the support naturally rises, and the shaft portion 25 at one end of the support plate 24 inserted into the guide slot 23 moves to the right as viewed in FIG. The whole moves to the right. Thereby, the shaft portion 26 provided at the other end of the support plate 24 and the bearing portion 18 of the steel sheet pile supporting plate 13 are provided.
The pivotal part of and rises vertically upward.

When the lever plate 20 is raised, the support plate shaft portion 25 in the guide slot 23 moves to one end side of the lever plate 20 as described above, and finally the terminal end portion which is the lower end portion of the raised guide slot 23. It comes into contact with 22a. At this time, the supporting plate 24 and the steel sheet pile supporting plate 1
Although 3 substantially forms a triangle with the bottom plate 11 as the bottom side, the lever plate 20 is still rotatable to the support plate 24 side, so that it is further raised and tilted more vertically than the bottom plate 11. Also, when the steel sheet pile supporting plate 13 side is collapsed, the supporting plate 24 is brought into close contact with it and stopped.

As a result, the four constituent members 11, 13,
20, 24 will form a nearly perfect triangle. In other words, the mutual length dimensions of the four components are designed so that a nearly perfect triangle can be formed in this state. This state is the so-called “assembled state” of the device 10. Steel sheet pile support plate 1 at this time
The supporting portion 15 of No. 3 extends above the bearing portion 18 which is the apex of the triangle, and the support for the steel sheet pile at its upper end surface is ready.

Now, this hanging wire removing device 10
Groove 31 on one end side of the steel sheet pile 30 placed on the ground
By being assembled and arranged as described above,
Steel sheet pile ready for loading. Next, the tip of the hoisting wire 33 is hung in a loop on the projecting end of the steel sheet pile 32 used for earth retaining in a loop shape, and the hoisting wire is pulled up by a crane or the like, and the steel sheet pile 32 is pulled out from the ground. As described above, the steel sheet pile 30, which is placed on the ground, is aligned and loaded in the longitudinal direction.

At that time, one end of the piled steel sheet pile 32 is overlapped so that its lower surface side protruding portion fits into the groove of the lower steel sheet pile, but the other end portion is suspended. The carrying part 1 of the steel sheet pile carrying plate 13 in the wire removing device 10.
5, the steel sheet pile 32 is tilted as a whole as shown in FIGS. 1 and 5, and therefore the loaded steel sheet pile 32 has a steel sheet pile having a lower half in its length direction. It seems that they floated up from 30, and no mutual contact occurred. Therefore, the hanging wire 33 is removed by utilizing the non-contact with the lower steel sheet pile 30 due to the inclined arrangement of the load-carrying steel sheet pile 32.

When one end of the steel sheet pile 32 rides on the carrying portion 15 which constitutes the upper end of the steel sheet pile supporting plate 13 as described above, the load of the steel sheet pile 32 is passed through the one end shaft portion 25 of the support plate 24. As shown in FIG. 1, the acting force extends to the lower end of the guide slot 23, that is, the end portion 22a, and the vertical direction. Is a force to tilt the lever plate 20 inward of the triangle. Therefore, when the steel sheet pile rides on the supporting portion 15, the suspension wire detaching device 10 acts by the load so as to self-hold the triangular assembled state.

Thereafter, the suspension wire 33 is attached to the steel sheet pile 32.
When removed from the suspension wire removal device 1
The lever plate 20 of 0 is rotated by pulling the towline 27 connected to the upper end side thereof. Then, the terminal end portion 22a of the guide slot 23, which has locked the lower end shaft portion 25 of the support plate 24 supporting the steel sheet pile supporting plate 13, laterally changes the direction thereof. The downward force in the extension direction of the support plate 24 due to the load of 32 is released, and as a result, the shaft portion 25 moves in the horizontal guide slot 23 and the support plate 24 is tilted almost horizontally, contrary to the time of assembly. Will be done.

As a result, the steel sheet pile supporting plate 13 loses its support and is laid down in a substantially horizontal state as shown in FIG. As a result, the steel sheet pile 32 whose other end was supported by the steel sheet pile supporting plate 13 fits into the groove 31 of the lower steel sheet pile 30 with the lower surface side protruding portion over the entire length thereof, It is in a normal loading condition. When the steel sheet piles are normally loaded, a gap is formed between the bottom portions of the upper and lower steel sheet piles 30 and 32 due to their shapes.

The hanging wire removing device 10 in which the steel sheet pile supporting plate 13 is tilted substantially horizontally so that the whole is in a flat state is located in the gap between the bottom portions of the steel sheet piles 30 and 32, whereby the hanging wire is provided. The removal device 10 is pulled out from the gap, reassembled and placed in the groove of the previously loaded steel sheet pile 32. By repeating this, a large number of steel sheet piles are sequentially loaded in a state where the hanging wire can be safely and easily removed.

In the steel sheet pile hanging wire removing device 10 of the embodiment shown in FIGS. 1 to 5, the support plate 24 for supporting the steel sheet pile supporting plate 13 is literally formed of a plate-like body,
Further, the shaft portion 25 at one end is movably inserted into guide slots provided on both sides of the inner surface of the lever plate 20. However, the present invention is not limited to such a configuration. For example, as shown in FIG. 6, a simple hook-shaped locking portion 35 is provided on the lower side of the inner surface of the lever plate 20, or a steel sheet pile. Support board 1
It is also possible to form the rod-shaped body 36 as a component member that supports the rod 3.

[0040]

As described above, according to the suspending wire removing device for loading a steel sheet pile according to the present invention, when the steel sheet pile is hung by the hanging wire and is placed on the steel sheet pile, the steel sheet pile is located on the lower side. This device is assembled and placed in the groove on one end side, one end of the steel sheet pile is temporarily supported high by the steel sheet pile supporting member that constitutes the device, the hanging wire is removed between them, and then this device is flattened. Can be folded and removed,
As a result, the hanging wire can be easily and safely removed from the steel sheet pile to be loaded. From such a fact, there is an excellent effect that the safety and the economical efficiency of the work for placing the steel sheet pile can be remarkably improved.

[Brief description of drawings]

FIG. 1 is a side view showing a suspension wire removing device according to an embodiment of the present invention when a steel sheet pile is loaded, assembled in a steel sheet pile supportable state.

FIG. 2 is a plan view showing a bottom plate which constitutes the hanging wire removing device when the steel sheet pile of the embodiment shown in FIG. 1 is placed.

FIG. 3 is a plan view showing a state in which the suspension wire removing device when the steel sheet pile of the embodiment shown in FIG. 1 is placed is flatly folded.

FIG. 4 is a side view showing the hanging wire removing device when the steel sheet pile is loaded, which is shown in a flatly folded state in FIG.

FIG. 5 is an end view of the steel sheet pile to be placed on the left side of FIG. 1 when the steel sheet pile is temporarily carried by the hanging wire detaching device when the steel sheet pile is being placed and the hanging wire is removed. is there.

FIG. 6 is a perspective view showing a hanging wire removing device when a steel sheet pile according to another embodiment of the present invention is placed.

[Explanation of symbols]

 10 Suspension Wire Removing Device When Loading Steel Sheet Pile 11 Bottom Plate 12 Bearing Part 13 Steel Sheet Pile Carrier Plate 14 Shaft Part 15 Supporting Part 16 Bending Line 17 Rib 18 Bearing Part 19 Bearing Part 20 Lever Plate 21 Shaft Part 22 Co Character-shaped member 22a End portion or locking portion 23 Guide slot 24 Support plate 25 Shaft portion 26 Shaft portion 27 Drawstring 28 Ring portion 29 Stopper 30 Steel sheet pile 31 Steel sheet pile groove 32 Steel sheet pile 33 Suspending wire 34 Synthetic force 35 Hook -Shaped locking portion 36 Rod-shaped support member

Claims (1)

[Claims] 1. A bottom plate, a steel sheet pile supporting member whose one end side is pivotally attached to one end side of the bottom plate, a lever member whose one end is pivotally attached to the other end side of the bottom plate, and the steel sheet pile supporting member. A support member, one end of which is pivotally attached to the upper end side of the member and is capable of supporting the steel sheet pile supporting member in an inclined state, and a locking portion provided on the one end side of the lever member, wherein the lever member is the While standing up against the bottom plate, the other end of the support member is locked to exert an action force for tilting the lever member toward the support member side, and the lever member is centered around the pivotal portion with the bottom plate. When the support member is rotated to the side opposite to the support member and is tilted horizontally, the support member is disengaged from the engaging portion and the other end of the support member is movable along the surface of the lever member so that the support member is substantially horizontal. The lever member with respect to the bottom plate. The size that the bottom plate, the steel sheet pile supporting member, and the supporting member form a triangle when the other end of the supporting member is engaged with the locking portion formed on the lever member. A hanging wire removing device for loading steel sheet piles, which is characterized by being related to each other.