JPH0211461Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] The present invention relates to a pressing breaking device used in construction machinery that performs so-called pile cap processing, which is a process of breaking 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. 52 is slidably supported toward the center inside the frame, and the rod 52 of this hydraulic cylinder 52
There is one in which a crushing blade 53 is attached to the tip of a (Japanese Unexamined Patent Publication No. 54-66505, Japanese Utility Model Application No. 54-66505).
Publication No. 74107).

According to this, as shown in FIG.
Since the surplus portion of the pile can be successively crushed while being surrounded by the support frame 51, the work can be carried out safely and efficiently without randomly bending or breaking the reinforcing bars 54 inside the pile.

However, in the conventional pile head processing machine, as shown in FIG.
2 is fixed to the frame 51, and a crushing blade 53 is provided at the tip of the telescopic rod 52a, so that uneven loads such as twisting and tilting applied to the crushing blade 53 are handled by a thin member called the rod 52a. It is directly exposed to it and is easily destroyed.

In order to prevent this, it is conceivable to make the rod 52a itself thicker, but this would increase the size of the entire hydraulic cylinder 52 and increase the cost.

[Purpose of invention]

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
We have developed a pressure breaking device for pile head processing machines that is designed to prevent undue force from being transmitted to the hydraulic cylinders etc. that slide the crushing blades even if a biased force is applied to the crushing blades, resulting in a device with fewer failures. It is about providing.

[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 four pressing breaking devices with crushing blades attached to their tips in four directions, front, back, left and right, are installed outside the upper and lower through holes in the center of the machine frame. The crushing device is configured such that the crushing blade is attached to the end face of a hydraulic cylinder, and the cylinder rod end on the opposite side is supported within the fuselage frame via a spherical seat, allowing the thin member to directly receive the load. This is achieved by providing clearance at the support point.

[Example of idea]

Hereinafter, embodiments of the present 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 aforementioned crushing device 3 is composed of a crushing blade 10 and a hydraulic cylinder 11 that slides on the crushing blade 10.

To explain this hydraulic cylinder 11 first, the end surface 11b of the cylinder rod 11a on the non-projecting side
toward the center of the through hole 2, and insert the hydraulic cylinder 11
The outer periphery of the cylinder rod 11a is rotatably supported on the frame 1 by a holder 12 with a collar and a bush interposed therebetween, and the end of the cylinder rod 11a facing outward is made into a spherical shape, and a spherical catch 13 is used to fix this to the fuselage frame 1 side. I decided to accept it. 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, the crushing blade 10 has a plurality of heads 1 arranged in a horizontal direction.
0a, and is welded to a holder 16 together with a flat crushing head 15 arranged a little apart from a part thereof, and is attached to the end face of the hydraulic cylinder 11 via this holder 16 by bolting.

Next, to explain the usage and operation, the fourth
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 11 of the cylinder 11
When a is extended, the cylinder 11 and the crushing blade 10 move toward the center of the hole 2, the top part 10a bites into the concrete of the pile P, and the pile P is crushed by receiving pressing forces from four directions.

At this time, the crushing blade 10 is subjected to a force that causes it to be shaken up and down as a reaction, but this load is directly transmitted to the large diameter portion of the end face of the cylinder 11, and even if the cylinder 11 itself swings a little, the end The end 11b of the rod 11a can be sufficiently handled since clearance is obtained by the spherical seat 13, and there is little risk of breakage.

[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, the rotational load applied to the crushing blade can be easily passed by the hydraulic cylinder that slides on the crushing blade, and failures such as rattling of the device are less likely to occur.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of a pile cap processing machine equipped with the pressing breaking 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 the same as the above. FIG. 5 is a plan view of a conventional pile cap processing machine, FIG. 6 is a front view showing the same state of use, and FIG. 7 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,
10a...Top, 11...Hydraulic cylinder, 11a
...Cylinder rod, 11b...End face, 12...
Cylinder holder, 13... Spherical catch, 14...
Fixed pin, 15... Crushing head, 16... Holder, 17... Wire rope, 18... Hose holder, 19... Hydraulic hose, 20... Hydraulic unit, 51... Support frame, 52... Hydraulic cylinder, 52a... Rod, 53... Crushing blade, 54
...Reinforced steel.

Claims (1)

[Scope of utility model registration request] In a pile head processing machine that is equipped with four pressing breaking devices that have crushing blades attached to their tips in four directions (front, rear, left, and right) outside the upper and lower through holes in the center of the machine frame, the pressing and crushing devices have crushing blades attached to hydraulic cylinders. Attach to the end face of
A press breaking device for a pile head processing machine, characterized in that a cylinder load end on the opposite side is supported within a body frame via a spherical seat.