JPH0410278Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] The present invention relates to a pressure breaking device used in construction machinery that performs so-called pile cap processing, which is a process of destroying the head of a concrete pile to expose reinforcing bars for joining.

[Prior art and its problems]

There are various types of such pile head processing machines, such as a pinching type and a cutting type, but as an example, as shown in FIG. The rod 52 of the hydraulic cylinder 52 is slidably supported toward the center of the inside of the frame.
There is a device in which a crushing blade 53 is attached to the tip of a to form a pressing crushing device (Japanese Patent Application Laid-Open No. 1986-
66505, Utility Model Application Publication No. 54-74107). According to this, as shown in FIG. 7, since the excess portion of the pile P can be crushed one by one while being surrounded by the support frame 51, the reinforcing bars 54 inside the pile are not bent or broken in a random manner. , you can proceed with your work safely and efficiently.

However, in the conventional press breaking device of the pile head processing machine, only the crushing blade 53 having a cutting edge 53a is attached to the tip of the hydraulic cylinder 52, as shown in FIG. As shown in FIG. 8 as an example, this crushing blade 53 is a flat plate body, and the cutting edge 53a at the tip has an arc shape so as to match the outer circumference of the concrete pile P, and is in line contact or surface contact with the pile P. Although the shape is pressed, other shapes are also possible.

In any case, the crushing blade 53 has a sharp cutting edge at the tip, otherwise the pile P cannot be effectively crushed. On the other hand, the concrete pile P has a disc-shaped joint on the upper end joint surface. An iron plate is embedded, and there is a risk that this part will break if the cutting edge 53a is pushed into it.

[Purpose of invention]

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
To provide a press breaking device for a pile head processing machine that can easily break a steel plate at a pile joint part without fear of damaging the cutting edge.

[Key points of the idea]

However, according to the present invention, the purpose of the lever is to provide a pile cap processing machine in which a pressing breaking device is installed in four directions (front, rear, left and right) outside the upper and lower through holes in the center of the body frame. This is achieved by arranging crushing blades having crushing heads and cutting edges one above the other with a slight distance from each other and attaching them to the tips.

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described in detail with reference to the drawings.

Fig. 1 is a partially cutaway perspective view of a pile head processing machine equipped with a crushing device of the present invention, Fig. 2 is a partially cutaway plan view of the same, and Fig. 3 is a front view of the same. The outer body frame has two vertical through holes in the center.
is formed.

The fuselage frame 1 is located outside the through hole 2, and has four
In order to arrange a total of four press breaking devices 3 in the same direction, the storage protrusions 1a of the devices 3 are formed to protrude in four directions. The space between the adjacent housing protrusions 1a is largely gouged inward to secure a concave portion 4, and as a result, the overall shape of the frame 1 is made into a cross shape. 5 in the figure is a wire rope fixing hook attached to the upper surface of the storage protrusion 1a of the fuselage frame 1;
Reference numeral 6 designates a hydraulic equipment storage box similarly provided on the upper surface of the fuselage frame 1, and within the box 6, flow valves 7 and 8 and a check valve 9 are also stored.

The crushing device 3 is composed of a crushing blade 10, a crushing head 15, and a hydraulic cylinder 11 that slides the crushing blade 10 and crushing head 15.

First, the hydraulic cylinder 11 will be explained. The non-protruding end surface of the cylinder rod 11a is directed toward the center of the through hole 2, and the outer periphery of the hydraulic cylinder 11 is attached to a holder 12 with a collar and a bush interposed therebetween.
The cylinder rod 11a is rotatably supported on the frame 1, and the end of the cylinder rod 11a facing outward is made into a spherical shape, and is received by a spherical seat 13 fixed to the body frame 1 side. Furthermore, the rod 11a and the seat 13 are fixed through each other with a fixing pin 14 while leaving some looseness.

On the other hand, as shown in FIG. 4, the crushing blade 10 has a tapered lower surface and a plurality of inwardly recessed apexes 10a lined up in the horizontal direction as cutting edges, and a flat plate-shaped ichigo leaf is placed a little apart on the top of the apex 10a. It is welded to a flat holder 16 together with the crushing head 15 of the mold, and the hydraulic cylinder 11 is connected through this holder 16.
It was attached to the end face of the body with bolts 21.

At this time, the head of the bolt 21 is located on both sides of the lower narrow diameter part of the crushing head 15, and the head 1 is located on the upper part.
The large diameter part of head 5 will now cover the head 15.
Nothing stands out more than that. Further, the top portion 10a of the blade 10 is assumed to protrude slightly forward of the crushing head 15.

Next, to explain the usage and operation, the fifth
As shown in the figure, the fuselage frame 1 is hoisted horizontally with a wire rope 17 and suspended above a predetermined pile P, and then lowered as it is, and the head of the pile P is inserted into the through hole 2 from below.

In the figure, reference numeral 18 denotes a hose holder that supports a hydraulic hose 19, and the hydraulic hose 19 connects the hydraulic cylinder 11 to a hydraulic unit 20 having a fixed operation panel and a control panel via the equipment in the box 6.

In this way, the rod 11a of the cylinder 11
When extended, the cylinder 11, the crushing blade 10 and the crushing head 15 move toward the center of the hole 2, and the top 10
a digs into the concrete of the pile P, and the pile P is crushed under the pressure.

By the way, at the beginning of such work, as shown in FIG. 6, the joint iron plate 22 of the pile P is at the head, but this is crushed only by the crushing head 15 without applying the crushing blade 10. . After the iron plate 22 is completely removed, the crushing blade 10 repeats the destruction at a pitch of about 30 cm.

[Effect of idea]

As mentioned above, the crushing device of the pile head processing machine of the present invention has four pressing crushing devices with crushing blades attached to their tips in four directions, front, back, left and right, located outside the upper and lower through holes in the center of the machine frame. In the pile head processing machine, there is no risk of damaging the cutting edge at the tip of the crushing blade, and the pile joint iron plate can be easily destroyed.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of a pile cap processing machine equipped with a crushing device of the present invention, Fig. 2 is a partially cutaway plan view of the same, Fig. 3 is a front view of the same, and Fig. 4 is an essential part. Fig. 5 is a front view showing the same state in use, Fig. 6 is an explanatory diagram showing the first process, Fig. 7 is a plan view of a conventional pile cap processing machine, and Fig. 8 is the same state in use as above. FIG. 9 is a side view of the crushing blade portion. DESCRIPTION OF SYMBOLS 1... Airframe frame, 1a... Storage protrusion, 2... Through hole, 3... Pressing destruction device, 4... Recess, 5...
Hook, 6... Hydraulic equipment storage box, 7, 8...
...Diversion valve, 9...Check valve, 10...Crushing blade,
11...Hydraulic cylinder, 11a...Cylinder rod, 12...Cylinder holder, 13...Spherical catch, 14...Fixing pin, 15...Crushing head, 1
6...Holder, 17...Wire rope, 18
... Hose holder, 19 ... Hydraulic hose, 20
... Hydraulic unit, 21 ... Bolt, 22 ... Joint iron plate, 51 ... Support frame, 52 ... Hydraulic cylinder, 52a ... Rod, 53 ... Crushing blade,
53a...Blade tip, 54...Reinforcing bar.

Claims (1)

[Scope of utility model registration request] In a pile head processing machine in which a crushing device is installed in four directions (front, rear, left, and right) outside the upper and lower through holes in the center of the body frame, the crushing device has a flat crushing head and a crushing blade having a cutting edge separated by a small distance. A pressure breaking device for a pile head processing machine, which is characterized by being arranged vertically and attached to the tip.