JPH0517330B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a protective wall used to ensure the safety of work at a pile press-in/pulling work site, and in particular, to a protective wall that follows the movement of a pile press-in/pull work site. This invention relates to a movable protective wall that can move the protective wall.

(Prior Art) Conventionally, at construction sites, piles such as steel sheet piles have been connected and press-fitted into the ground using a pile press-in/pull machine or the like. In order to press-fit the piles in this operation, it is necessary to lift the piles with a crane and proceed with the pile press-in operation while sequentially feeding the piles to a pile press-in/extraction machine.

However, the lower ends of the lifted piles may sway or fall due to vibrations and wind during lifting and moving, which may cause damage to nearby facilities such as cutting high-voltage lines, especially at construction sites. If the vehicle was located near a railway track, it could interfere with railway operation and pose a risk of contact with overhead wires. In addition, these pile press-in operations had the disadvantage that the cranes and the like gave a sense of intimidation to train drivers.

(Problem to be solved by the invention) At some construction sites, in order to minimize damage in the event of an accident such as the one described above, framed iron pipes are erected, and this framework is fitted with so-called flame-retardant material. In some cases, shielding walls were installed by stretching sheets such as sheets. However, at the pile press-in site,
The work of installing these shielding walls itself is time-consuming and dangerous, and if the work location moves as the work progresses, such as with pile press-in work, it is necessary to install the above-mentioned shielding walls over the entire construction area. However, it was not easy to relocate such a simple shielding wall, although it was necessary to follow the pile press-in/extraction machine. Furthermore, it has been difficult to sufficiently prevent damage to facilities caused by the shaking or overturning of heavy objects such as steel piles with the shielding walls made of the sheets.

Therefore, in some cases, pile press-in work must be carried out during a short period of time at night when railway operations have ended, and furthermore, when there are high-voltage lines above the site,
I had to apply a protective coating before starting work.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems, and includes a clamping moving device that moves forward and backward on an existing pile row, and a clamping moving device that moves forward and backward on an existing pile row. Alternatively, this can be accomplished by a movable protection wall that is integrally constructed with protection walls installed on the sides.

(Function) A protective wall is placed on the existing pile row, which is made by connecting steel piles etc. underground and burying them, using a clamping and moving device.

By using a clamping and moving device that is placed on the existing pile row and moves while holding the pile row, the protection wall is always erected in a stable state and can be moved following the pile press-in/extraction machine. can.

Therefore, the protective wall is always stably maintained in a position close to the work site such as pile press-in work, and even if the steel sheet piles etc. lifted by a crane shake or fall,
Safety is maintained for the outside of the protective wall, that is, the facilities around the site.

(Example) An example of the present invention will be described based on the drawings. FIG. 1 is a partially cutaway front view of the first embodiment, FIG. 2a is a sectional view taken along line XX in FIG. 1, and FIG. 2b is a sectional view taken along line Y-Y in FIG.

The movable protective wall 1 shown in the first embodiment has an existing pile P
It consists of a clamp mechanism 4 for clamping, a clamp moving device 3 comprising a clamp moving mechanism 5 for moving these clamp mechanisms, and a protective wall 2 erected on the side of the clamp moving device 3.

The configuration of each part will be explained in detail below.

A pair of main clamps 41 that clamp the existing piles P, P are hydraulically driven clamp mechanisms normally used in pile press-in/extraction machines.
Support bodies 51, 51 are erected at the upper ends of 1, 41. The supports 51, 51 have protrusions 51a, 51a formed on their opposing inner surfaces, respectively, and are slidably fitted into grooves 53a of an auxiliary body 53, which will be described later.

The main clamp 41 is movable in the left-right direction (direction perpendicular to the pile row) with respect to the support body 51, or rotatable in the axial direction.

The sub-clamps 42, 42 have the same structure as the main clamp 41, and the main clamp 4
1 and 41 are sandwiched between them, and a movable body 52 is fixed to the upper end. This sub clamp 4
2 and 42 are also movable in the left-right direction relative to the movable body 52 or rotatable in the axial direction.

The movable body 52 has a groove 52a cut in its upper end as shown in FIG. It moves back and forth with respect to the auxiliary body 53 and functions to move the sub clamps 42, 42 back and forth on the pile row.

The auxiliary body 53 has grooves 53 at both ends of its short side.
a, 53a, and this groove 53a is connected to the support body 5.
By fitting into the protrusion 51a of 1, the auxiliary body 53 is slidably moved up and down with respect to the supports 51, 51, and as a result, the sub-clamps 42, 42 are moved up and down.

Two protective wall mounting arms 21, 21 are provided above and below one side of the supports 51, 51, and these mounting arms 2
A protective wall body 2 is removably fixed to 1 and 21. At this time, the upper part of the protective wall 2 and the mounting arm 21 may be connected with an auxiliary tool W such as a wire or a pipe for reinforcement. This protective wall body 2 protects surrounding facilities from shaking and falling of the lifted pile, so it is constructed by selecting a material having an appropriate size and strength. Therefore, it is possible to use wire mesh or expanded metal reinforced with an iron frame to reduce the influence of wind and its own weight while maintaining strength.

Next, the operating state of the movable protection wall of this embodiment will be explained based on FIG.

FIG. 5a shows the support body 5 after the main clamps 41, 41 are released from the initial state shown in FIG.
1 and 51 are raised along the grooves 53a at both ends of the auxiliary body 53 until the lower ends of the main clamps 41 and 41 are positioned above the existing pile P.

Next, while maintaining this state, the auxiliary body 53 is moved relative to the movable body 52, and the main clamp 41,
41 and move it forward by one pile. Next, move the main clamps 41, 41 in the left and right directions (direction orthogonal to the pile row) and change the clamping position to the existing pile P2,
Adjust to the P6 position and tighten the main clamps 41, 41.
is lowered to clamp the existing piles P2 and P6. (Fig. 5 b, c) Furthermore, after releasing the clamping state of the existing piles P3 and P4 held by the sub-clamps 42 and 42, the auxiliary body 53 is raised together with the sub-clamp 42, and the tip of the sub-clamp 42 is raised to the existing pile P4. When the auxiliary body 53 is located above the upper end, the raising of the auxiliary body 53 is stopped, the sub-clamp 42 is moved forward by one pile, and the sub-clamps 42, 42 are lowered, and the existing piles P4, P5 are lowered.
to hold. (Fig. 5 d, e, f) By repeating this operation, the clamp mechanism 4 follows the pile press-in/puller S and moves the pile 1 on the existing pile row.
You can move forward (or backward) one sheet at a time. Accordingly, the protection wall 2 also moves one pile at a time.

Further, if the existing pile row is curved, the movement can be similarly performed by adjusting the amount of movement of each clamp 41, 42 in the left-right direction or by rotating it.

A second embodiment of the invention is shown in FIG. This second
The difference in structure between the movable protective wall of this embodiment and the first embodiment is that the length of the auxiliary body 63 is increased and the moving distance in the front and rear direction of the movable body 62 in which the sub-clamps 61, 61 are fixed. is the width of two piles. Therefore, when moving the movable protection wall, the main clamps 41, 41 and the sub clamps 61, 61 have the advantage of being able to move forward two piles at a time. Therefore, when the steel sheet pile is connected alternately between the dorsal side and the ventral side of the pile P, when moving forward by two piles, the clamps 41 and 6
Since clamp 1 always clamps the pile P that is press-fitted in the same direction, clamp 4 must be clamped each time it is moved.
There is no need to adjust the movement in the left and right direction of 1 and 61.

As shown in the above examples, each clamp mechanism is
Since the structure allows the amount of movement of each to be adjusted forward and backward independently, it is possible to
By appropriately adjusting the advancing and retreating distance according to the pile width of the steel sheet pile, pile press-in work can be performed continuously without interrupting the work. Also, if steel sheet piles with different pile widths are used, readjustment will be required.

A third embodiment of the present invention will be described based on FIGS. 7 and 8. Figure 7 is a front view of this embodiment;
The figure is a partially cutaway side view of the same.

The movable protective wall 13 shown in the third embodiment has a clamping device 45 that clamps the existing pile P from both sides, and an endless track 47 that moves freely forward and backward on the existing pile row by the rotational power of a built-in drive device 48. It consists of a moving device and a protective wall 2 fixedly installed on the side of the moving device and formed above and in front of the moving device.

The drive device 48 is a rotating power source such as an electric motor,
The endless track 47 is driven to move forward and backward through one drive wheel 49.

This endless track 47 is provided with teeth that mesh with teeth provided around the drive wheel 49. Furthermore, in order to assist in stabilizing the progression of the endless track 47, a groove portion may be provided around the center of the outer circumferential surface of the endless track 47 to engage with the upper end of the existing pile row.

The frame 71 from the shaft portion of the driving wheels 49, 49,
71 is vertically provided, and arms 45d, 45d are provided protruding from two locations in the center and lower part of the frame 71 in parallel to the existing pile row.

The clamping device 45 includes a pair of front and rear guide rollers 45b, 45b rotatably supported by the arms 45c, 45c when disposed on the arms 45d, 45d, and a second endless track wound around the guide rollers 45b, 45b. A pair of 45a are arranged on both sides of the pile row.

The second endless track 45a is configured to be rotatable in substantially the same manner as the endless track 47, and is normally not connected to a power train, but is not particularly limited thereto.

The shaft 45c normally presses the guide roller 45b against the side wall surface of the existing pile P by a spring mechanism (not shown) installed in arms 45d, 45d that support the shaft 45c. This second endless track 45
The spacing between a and 45a can be adjusted to suit different pile widths depending on the type of pile.

The protective wall 2 is a plate-shaped body that is detachably fixed to the support frame 71, and in order to protect the high-voltage lines L, L, which are stretched almost parallel to the railway tracks, there are It is bent so as to cover the movable protection wall 13 and forms an almost horizontal upper air protection plate 21. The upper surface of the upper air protection plate 21 is coated with an insulator to prevent an electric shock from occurring if it comes into contact with a high voltage line stretched above.

In the movable protective wall 13 of this embodiment, an endless track 47 is placed on the existing pile row, and both sides of the existing pile row are held between a pair of second endless tracks 45a, 45a. As the pile press-in work progresses, the endless track 47
By activating and moving the pile row, the protective wall 2
advance.

In this embodiment, the moving operation is easier than in the first embodiment, and it is not limited by the pile width.
It is possible to move any distance.

Furthermore, a moving device having a structure in which driving wheels are connected in place of the endless track 47 of this embodiment can also be adopted, and the second endless track 45a can also be formed by using a long case with a large number of rollers installed in a row inside. 45 at both ends
By locking between d and 45d and contacting the existing pile row surface, it can be replaced with the second endless track 45a.

(Effects of the Invention) As described above, according to the present invention, even if the tip of a steel sheet pile, etc. hoisted by a crane or the like swings or falls due to the influence of the wind, the protection wall will not act. It protects surrounding facilities, does not damage railway facilities or interfere with railway operation, and does not give a sense of intimidation to drivers. Therefore, work such as pile press-fitting can be performed during the daytime when safety can be easily and reliably confirmed, and the work efficiency is improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view of the first embodiment, FIG. 2a is a cross-sectional side view taken along the line X-X in FIG. A Y-line cross-sectional side view, FIG. 3 is a side view showing the first embodiment in use, FIG. 4 is a plan view of the same, FIG. 5 is an explanatory diagram of the moving state, and FIG. 6 is a front view of the second embodiment. Figure 7 is the third
The front view and FIG. 8 of the embodiment are the same side views. 1, 13...Movable protective wall, 2...Protective wall body,
3... Clamp moving device, 4... Clamping device, 4... Clamp mechanism, P... Existing pile, 5... Clamp moving mechanism, 47... Endless track.

Claims (1)

[Scope of Claims] 1. A clamping moving device that clamps existing piles from both sides and moves freely forward and backward on the existing pile row, and a protective wall that stands above the clamping and moving device are integrally constructed. A mobile protective wall featuring: 2. The movable protective wall according to claim 1, wherein the clamping and moving device comprises a clamp mechanism that clamps the existing pile, and a clamp movement mechanism that moves the clamp mechanism back and forth. 3. The clamping and moving device has a clamping device that rolls on both sides of the existing pile while clamping the existing pile, and is comprised of an endless track that runs freely forward and backward on the row of existing piles by means of a drive device. A movable protective wall according to claim 1.