JPS5925961Y2 - Pile driving leader with jib boom - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a pile driving leader with a jib boom.

A conventional relatively small pile driving machine in which the upright leader during use is stored approximately horizontally on the main body during transportation is such that the sub-leader guide 2 provided on the back of the leader 1 is attached to the sub-leader 3 as shown in Fig. 3. Slideably supported by guide receivers 3a and 3b,
The leader 1 is configured to be able to rise and fall by expanding and contracting a hydraulic cylinder 4, and the leader 1 is configured to move up and down by expanding and contracting another hydraulic cylinder 5, and when transported, the hydraulic cylinders 4 and 5 are contracted to be moved up and down as shown by the chain line. The reader 1 is stored substantially horizontally on the main body.

Generally, at work sites where pile drivers are used, other cranes are introduced separately to transport and handle equipment, etc., and dangerous work such as lifting the load using the claws of the hydraulic excavator's packets, etc. I was going.

In addition, the work sites where these relatively small pile drivers operate are generally small, and it is often difficult to bring in other equipment such as cranes.

Therefore, in order to omit the above-mentioned auxiliary equipment and avoid danger, conventionally, the leader 1 was tilted forward as shown in Fig. 4 to secure the necessary minimum working radius and perform simple cargo handling work. Since the leader 1, which has a heavy weight and is long, is tilted forward, the forward overturning moment increases rapidly, which is not only disadvantageous for cargo handling operations, but also may cause an overturning accident.

6 is equipment. The present invention was devised to solve the above-mentioned inconvenience, and is a pile driver in which the leader can be stored and transported on the top of the base machine of the pile driver, and a jib boom for a crane is stored in the leader. The jib boom is pivotably supported vertically via a bracket at a position that does not interfere with pile driving, and a connecting bracket and a point sheave are provided at the tip of the jib boom, and a sheave block of a wire rope for suspending the front attachment is attached to the connecting bracket. It is characterized by engaging the jib boom to lower the jib boom, and allowing other front attachment suspension wire ropes to lift the equipment up and down via the point sheave. By attaching a jib boom exclusively for cargo handling work that extends and can be freely retracted, cargo handling work can be carried out safely, reliably, and easily.

Next, one embodiment of the present invention will be explained based on the drawings. Fig. 1 is an overall side view of a pile driver equipped with a piling leader with a jib boom of the present invention, and Fig. 2 is a cross section taken along line II-II in Fig. 1. represents a diagram.

The illustrated pile driver is similar to the pile driver shown in FIG. 3 and FIG.
This is an example of a relatively small pile driver configured to be vertically slidable by means of 2b, and the same reference numerals as in FIGS. 3 and 4 indicate the same parts.

A jib boom 8 is pivotally supported at its base 8a by a pin 9 on a bracket 7 fixed to the side surface of the leader 1 at an appropriate height, and is supported so as to be movable up and down in the front direction of the leader 1.

A connecting bracket 9 is attached to the tip 8b of the jib boom 8.
A point sheave 10 is provided, and a sheave block of an elevation rope 12 pulled out from the top sheave 11 and used for lifting a hammer during pile driving work is fixed to the connecting bracket 9. A hoisting rope 13 used for driving a pile pulled out from a sheave 11 is wound around the hook 14 so that the hook 14 can be lifted up and down.

To use the jib boom 8 attached to the pile driving leader configured in this way, first operate the elevating rope 12 to extend the jib boom 8 to the required state (approximately horizontal state in Fig. 1), and then If you operate the hoisting rope 13, the hook 1
4 makes it possible to lift the equipment 6, etc., and perform normal crane work.

Of course, it is also possible to simultaneously change the working radius and the lift height of the load by simultaneously operating the elevating rope 12 and the hoisting rope 13.

When attempting to perform the original pile driving work, the elevating rope 12 and hoisting rope 13 are pulled out, and the jib boom 8
is suspended as shown in the dashed line in Drawing 1, and pivoted to the sheave 1, and the elevation rope 12 and the hoisting rope 13 are removed from the connecting bracket 9 and the point sheave 10, respectively, and engaged with the front attachment 15 to suspend it. The hammering work can be done without any problem.

In addition, in the above embodiment, the bracket 7 for fixing the shaft of the jib boom 8 is
is fixed to the side of the leader 1, but it may also be fixed to the front of the leader 1, etc., at a position where the jib boom 8 is retracted and does not interfere with the vertical movement of the front attachment 15.

Further, the pile driver is not limited to this embodiment.

As explained above, according to the pile driving leader of the present invention, a single pile driving machine can perform crane work, and safe cargo handling work can be performed without requiring the equipment of other crane machines, which is economical. Moreover, it is possible to easily change from a pile driver to a crane machine, or from a crane machine to a pile driver, in a short period of time, resulting in a pile driver with excellent workability.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a pile driver equipped with a pile driving leader with a crane device of the present invention, Fig. 2 is a sectional view of Fig. 1 III, Fig. 3 is an overall side view of the pile driver, and Fig. 4 FIG. 2 is a side view showing a conventional cargo handling operation state. 1 is a leader, 7 is a bracket, 8 is a jib boom, 9 is a pin, 12 is an elevation rope, and 13 is a hoisting rope.

Claims (1)

[Scope of utility model registration request] In a pile driver that can be transported by storing the leader on the top of the base machine of the pile driver, the crane jib boom can be stored in the leader and rotated up and down via the bracket to a position that does not interfere with pile driving. A connecting bracket and a point sheave are provided at the tip of the jib boom, and a sheave block of a wire rope for suspending the front attachment is engaged with the connecting bracket to lower the jib boom, and the jib boom is used for suspending other front attachments. A pile driving leader with a jib boom, characterized in that the equipment can be lifted up and down via the point sheave with a wire rope.