JPH0128116Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a backstay protection device used when attaching and detaching a backstay during assembly and disassembly of a pile driver.

[Conventional technology]

When assembling a backstay, a conventional pile driver moves the wire c from the wire winding drum b on the base machine a, the sheave e on the catch fork d, and the top sheaves g and h of the leader f, as shown in Fig. 3. It is hung around, and its terminal end is tied to a bracket j installed on the stay attachment beam i. A sheave m is attached to a backstay cylinder l assembled below the backstay k, and the wire c passes through it.

As shown in FIG. 4, as the wire c is wound on the wire winding drum b, the backstay k moves as shown by the dashed line and is finally assembled onto the stay mounting beam i.

[Problem that the invention attempts to solve]

However, when the backstay k, which was in the assembly start state, winds up the wire c, and the lower end of the backstay cylinder l leaves the ground, the backstay cylinder l moves toward the crawler n, and eventually the crawler It will be in a state where it is leaning on n. If the wire c is further wound up in this state, the rod portion o of the backstay cylinder l will be damaged by the crawler n.

[Means for solving problems]

In order to solve the above-mentioned conventional problems, the present invention removably attaches a non-metallic patch plate to the outer end of the crawler on the non-grounding side.

[Effect]

When assembling the backstay, even if the lower end of the backstay cylinder is lifted off the ground by the wire and the backstay cylinder moves toward the crawler and leans against the crawler, the outer end of the crawler The backstay rods are protected by the attached non-metallic backing plate and will not be scratched.

When driving the crawler, the pile driver can be moved by removing the corresponding plate.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figures 1 and 2 are an embodiment of the present invention,
A backing plate 1 made of non-metallic material such as wood, plastic, or rubber is formed into a prismatic shape, and mounting stands 3 are vertically fixed to each end of the plate 1 with bolts 4 at intervals of a plurality of crawler shoes 2. , an upper plate 5 is fixed horizontally to each mounting base 3 by welding or the like, and lower ribs 6 and 7 are horizontally attached below each upper plate 5 with an interval equal to the thickness of the crawler show 2. The upper plate 5 and the lower ribs 6 and 7 allow the cover plate 1 to be attached to the crawler 8.

Further, a shear block 9 is fixed to the upper end of each upper plate 5 so as to be parallel to the mounting base 3, and the upper plate 5 between the shear block 9 and the mounting base 3 is fixed.
A long hole 10 is drilled in the direction orthogonal to the sear block 9, and a taper pin 11 that can pass through the long hole 10 can be pushed into a hole 12 for draining water and attaching spikes for cold regions drilled in the crawler shoe 2.
A tapered wedge 13 is fitted between the taper pin 11 and the shear block 9.

In the above, the mounting range of the backing plate 1 is sufficient to cover half of the entire length of the crawler 8 on the leader side.

With the above configuration, the backing plate 1 of wood etc.
is attached to the crawler 8 so that the crawler show 2 is sandwiched between the upper plate 5 and the lower ribs 6 and 7 at both ends, the elongated hole 10 is aligned with the hole 12 of the crawler show 2, and the taper pin 11 is inserted into the elongated hole 10. , insert it into the hole 12 and fix it by tapping,
A tapered wedge 13 is driven between the taper pin 11 and the shear block 9, and the cover plate 1 is firmly fixed to the crawler 8 using the shear block 9 as a reaction force base.

Since the backing plate 1 is located at the outer end of the crawler shoe 2 on the non-ground side, the lower end of the backstay cylinder moves away from the ground due to the winding of the wire when the backstay is in the assembly start state, and the backstay cylinder is directed toward the crawler 8. Even if it moves and leans against the crawler 8, it will not damage the rod part of the backstay cylinder. By applying a lubricant such as grease to the backing plate 1,
This allows for smoother assembly.

The rod part of the backstay cylinder is crawler 8.
The length in contact with the end is about half of the total length of the crawler 8, and after that it gradually moves away from the top surface of the crawler 8, so there is no need to attach the backing plate over the entire length of the crawler 8. , it is sufficient to attach it to the reader side.

It should be noted that the pile driver backstay protection device of the present invention is not limited to the above-mentioned embodiment, and if the crawler shoe does not have a hole for draining water, a hole for inserting a taper pin may be provided. , The backing plate may be attached to the left and right crawlers, or the entire product may be reassembled to the right (or left) crawler after attaching it to the left (or right) crawler and attaching the backstay. Of course, various changes can be made without departing from the gist of the present invention.

[Effect of idea]

As described above, the pile driver backstay protection device of the present invention can provide various excellent effects as described below.

[] Since the non-metallic backing plate is removably attached to the outer end of the crawler, it is possible to prevent the rod of the backstay cylinder from being damaged when the backstay is assembled.

[] The shape and structure of the backing plate are relatively simple, and it is very easy to attach and detach with just one hammer.

[Brief explanation of the drawing]

Fig. 1 is an explanatory view of one embodiment of the protection device of the present invention, Fig. 2 is a detailed view of the part shown in Fig. 1, Fig. 3 is an overall view showing the state at the start of assembling the backstay of the pile driver, and Fig. 4 The figure is a process diagram for completing the assembly of the backstay in FIG. 3. 1 is a backing plate, 2 is a crawler shoe, 3 is a mounting base, 5 is an upper plate, 8 is a crawler, 9 is a sear block, 10 is a long hole, 11 is a taper pin, 12
13 indicates a hole, and 13 indicates a tapered wedge.

Claims (1)

[Scope of utility model registration request] A backstay protection device for a pile driver, characterized in that a non-metallic backing plate is removably attached to the outer end of the crawler on the non-ground side.