JPS6259981B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pipe crushing device that can easily and quickly cut and crush metal pipes.

[Conventional technology and its problems, etc.]

Traditionally, pipes with a relatively large diameter (for example, approximately 1 m in diameter) have been used for disposal or recycling at pipe manufacturing plants.
There was no tool that could efficiently cut and crush metal pipes (internal and external) and pipes to be disposed of in chemical factories, oil refineries, etc. For this reason,
A known demolition crushing device, in which a movable blade and a fixed blade are opened and closed by a hydraulic cylinder, grips the pipe and cuts and crushes it using the shearing action of both blades, but this is mainly used for crushing concrete. Therefore, there was a problem that the cutting and crushing work was extremely inefficient.

[Means for solving problems]

Therefore, as a result of intensive research to solve the above problems, the inventor has devised the present invention, in which the base of a movable blade is pivotally supported on the outer casing, and the fixed blade corresponding to the movable blade is fixed to the outer casing. The distal end side of the movable blade is formed into a movable beak-like blade portion with a chevron-shaped arc and a sharp point, and the rear thereof is formed as a linear blade portion, and the blade cross section of the movable beak-like blade portion and the linear blade portion is The fixed blade is formed into a sharp point, and the tip side of the fixed blade is a valley-shaped arc-shaped fixed beak-shaped blade part, and behind this, a concave part and a flat protrusion are formed, and the tip side cross section of the fixed blade is is formed in a concave portion, and the movable blade is provided to be swingable by a hydraulic cylinder, and when the movable blade is closed, the movable beak-like blade portion and the linear blade portion of the movable blade move into the concave portion of the fixed blade. The pipe crushing device is located approximately in the center, and the width of this concave portion is approximately multiple times the thickness of the movable beak-shaped blade portion and the linear blade portion. , metal pipes can be easily and quickly cut and crushed, and the above-mentioned problems have been solved.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 7.

Reference numeral 1 denotes an outer casing, which has a substantially triangular or inverted L shape when viewed from the side, and is hollow inside. An opening 2 is provided on the front side of the outer casing 1 (left side in FIGS. 1, 3, etc.).

Reference numeral 3 denotes a metal movable blade, the base of which is inserted into the outer casing 1 from an upper position of the opening 2 and is pivotally supported. The base side of the movable blade 3 is formed in a straight line, and the tip side thereof is formed with a sharp movable beak-like blade part 3a that is curved with an appropriate curvature so as to have a chevron-shaped arc shape when viewed from the side. Movable beak-shaped blade part 3a
The linear blade portion 3c is continuous to the straight edge portion 3c. When viewed from the side (see FIG. 2), the blade surface in which the movable beak-like blade portion 3a and the linear blade portion 3c are continuous has a box-shaped shape. The blade cross section at the lower position of each of the movable beak-shaped blade portion 3a and the linear blade portion 3c becomes sharper as it goes downward.

In addition, in the embodiment, a reinforcing plate is fixed to the back (upper side) of the movable blade 3, and the cross section as a whole has a T-shape, and a collar 3b is fixed to the base of the movable blade 3. The movable blade 3 is loosely inserted into shaft rods 4 provided in two openings of the outer casing 1 and is configured to swing on a vertical plane.

Reference numeral 5 denotes a fixed blade made of metal, which corresponds to the movable blade 3, and the base side of the fixed blade 5 is connected to the opening 2.
It is inserted into the interior of the outer casing 1 from a lower position, and its base is fixed to a reinforcing seat or the like fixed to the outer casing 1.

The fixed blade 5 is formed into a substantially linear shape on the base side when viewed from the side, and the tip side is formed into a substantially straight line when viewed from the side.
Curved with an appropriate curvature to form an arc shape,
A sharp fixed beak-like blade portion 5a is formed, and a valley-shaped arc-shaped recess portion 5b with a small curvature is continuously formed behind the fixed beak-like blade portion 5a.
By forming this recess 5b, the recess 5b
The direction changes slightly from the inclined end to the substantially flat direction toward the base side, and as a result, it is formed as a flattened protrusion 5c.

In this way, the fixed blade 5 is formed so that the fixed beak-shaped blade part 5a, the recessed part 5b, and the flattened protrusion 5c are continuous from the distal end side. When the blade surface is viewed from the side (see Figure 2), it has a J-shaped cross section.

The fixed blade 5 is connected by a connecting plate between vertical side plates on both sides, and the cross-sectional shape of the connecting plate and both side plates is gate-shaped at the base side and H-shaped from the middle. , a concave portion 5d is formed on the upper surface side of the fixed blade 5.

In particular, as shown in FIG. 2, the longitudinal cross section of the connecting plate is very similar to the cross-section of the blade surface of the movable blade 3, and the length is the same as that of the connecting plate of the fixed blade 5. It is formed so that it is shorter.

When the movable blade 3 swings and closes with a hydraulic cylinder 7, which will be described later, as shown in FIG.
is located approximately at the center of the concave portion 5d in the cross section of the fixed blade 5, and the width of the concave portion 5d is multiple times the thickness of the movable beak-like blade portion 3a and the linear blade portion 3c. It is formed. In a specific embodiment, the width of the concave portion 5d is formed to be about twice to about three times the thickness of the movable beak-like blade portion 3a and the linear blade portion 3c. There is.

On the collar 3b fixed to the base of the movable blade 3,
One end (lower end) of the swing arm 6 is fixed.
That is, one end of the swing arm 6 is fixed to the base of the movable blade 3. 7 is a hydraulic cylinder, outer casing 1
A cylinder rod 8 is built in, the rear side of which is pivotally supported by the outer casing 1, and which moves forward and backward as required by hydraulic pressure.The tip of the cylinder rod 8 is connected to the other end (upper end ), and as the cylinder rod 8 slides back and forth, the movable blade 3 swings on a vertical plane via the swing arm 6.

In the figure, 9 is the shovel loader body, 10 is the arm,
Reference numeral 11 denotes a sub-arm, and 12 a mounting plate which is fixed to the outer casing 1. 13, 14, 15 are the first, second,
The third hydraulic cylinder, P is a pipe.

〔Effect of the invention〕

In the present invention, the base of the movable blade 3 is pivotally supported in the outer casing 1, the fixed blade 5 corresponding to the movable blade 3 is fixed to the outer casing 1, and the tip side of the movable blade 3 is shaped like a chevron arc. The movable beak-like blade part 3a has a sharp point, and the rear thereof is formed as a linear blade part 3c, and the blade cross section of the movable beak-like blade part 3a and the linear blade part 3c is formed into a sharp-pointed shape, and the fixed blade The distal end side of the fixed blade 5 is formed into a fixed beak-like blade part 5a which is valley-shaped and sharp, and behind this, a concave part 5b is formed, followed by a flattened protrusion 5c, and the cross section of the distal end side of the fixed blade 5 is formed into a concave part 5d. The movable blade 3 is provided to be swingable by a hydraulic cylinder 7,
When the movable blade 3 is closed, the movable beak-shaped blade portion 3a and the linear blade portion 3c of the movable blade 3 are located approximately at the center of the concave portion 5d of the fixed blade 5, and the width of the concave portion 5d is as follows. By providing a pipe crushing device in which the thickness of the movable beak blade portion 3a and the linear blade portion 3c is approximately multiple times that of the plate thickness, first, the metal pipe P can be easily and quickly cut and crushed. .

To explain this effect in detail, as shown in FIG. 7, a shovel and the crushing device of the present invention are replaced at the end of the auxiliary arm 11 of a shovel loader, and the cylinder rod 8 is moved forward and backward as appropriate by the hydraulic drive of the hydraulic cylinder 7. When cutting and crushing work is performed by swinging the movable blade 3 through the swing arm 6, first, as shown in FIG. The tip of the movable beak-like blade part 3a and the linear blade part 3c, and the fixed beak-like blade part 5 of the fixed blade 5.
a and the flattened protrusion 5d, or the movable beak-shaped blade part 3
It is held at three or four points by the tip of a, the fixed beak-shaped blade part 5a and the flattened protrusion 5d of the fixed blade 5.
Then, when the movable blade 3 is further swung downward in FIG. 3, the tip of the movable beak-shaped blade portion 3a pierces the pipe P, as shown in FIG. 4, and is perpendicular to the axial direction of the pipe P. A crack is generated in the direction, and at the same time, the fixed beak-shaped blade portion 5a of the fixed blade 5 also pierces the lower side of the pipe P, thereby gradually deforming the pipe P into an ellipse. Further, when the movable blade 3 is swung downward in FIG. 4, it becomes substantially flat as shown in FIG. 5, and the cracked portion can be cut and crushed as shown in FIG. 6. This series of operations actually allows cutting and crushing operations to be performed extremely easily and quickly.

In particular, in the present invention, the distal end side of the movable blade 3 is formed as a movable beak-shaped blade part 3a having a chevron-shaped arc shape and a sharp point, and the rear thereof is formed as a linear blade part 3c, and the distal end side of the fixed blade 5 is formed as follows: By forming a fixed beak-like blade part 5a with a valley-shaped arc and a sharp point, and forming a concave part 5b and a flattened protrusion 5c following this, the pipe P can be fixed at the upper and lower beak ends. While preventing the pipe P from rotating and escaping, the pipe P is held by the movable beak-like blade portion 3a, the fixed beak-like blade portion 5a, the linear blade portion 3c, and the flat protrusion 5c. There is an advantage that cutting and crushing can be performed extremely well by applying concentrated loads at three or four points.

In the present invention, at the same time, when the movable blade 3 is closed, the movable beak-shaped blade part 3a and the linear blade part 3c of the movable blade 3 are located approximately in the center of the concave part 5d of the fixed blade 5, so that When the pipe P is gradually cut, the cutting and crushing capacity can be further increased. That is, the pipe P is supported by both side blades of the concave portion 5d in the cross section of the fixed blade 5, and the force of the movable beak-shaped blade portion 3a and the linear blade portion 3c acts as a concentrated load in the middle of the pipe P, and further, By making the width of the concave portion 5d approximately multiple times the thickness of the movable beak-like blade portion 3a and the linear blade portion 3c, it is possible to avoid crushing by shearing or simply applying pressure. In addition, since the crushing is done by breaking a bar instead of crushing it, the concentrated load can be used effectively, making it extremely easy to crush, and pipe P can be crushed with great efficiency. There are advantages. Furthermore, by forming the blade cross section of the movable beak-shaped blade part 3a and the linear blade part 3c into a sharp-pointed shape, pipe P fracture can be prevented.
It can be made easier. This is because a concentrated load can be applied when the pipe P is cut.

Here, cutting by shearing and cutting by folding are different in mechanism and function.

As described above, since the ability to cut and crush is dramatically increased, the hydraulic cylinder 7 can be downsized and the pipe crushing device can be provided at low cost.
This series of operations can be performed with almost no vibration or noise.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the invention, Fig. 2 is a sectional view of a fixed blade and a movable blade, and Fig. 3 is a diagram showing an example of a pipe being cut and crushed. FIGS. 4 and 5 are cross-sectional views of the present invention, and FIGS.
The figure shows a state in which cutting and crushing of the pipe is almost completed, and FIG. 7 is a side view of the present invention installed on a shovel loader. 1... Outer housing, 3... Movable blade, 3a... Movable beak-shaped blade portion, 3c... Straight blade portion, 5... Fixed blade, 5a
. . . Fixed beak-shaped blade portion, 5b . . . Recessed portion, 5c .

Claims (1)

[Claims] 1. The base of the movable blade is pivotally supported in the outer casing, and the fixed blade corresponding to the movable blade is fixed to the outer casing, and the tip side of the movable blade is a movable beak-shaped blade part with a chevron-shaped arc and a sharp point. Further, the rear part thereof is formed as a linear blade part, the movable beak-shaped blade part and the linear blade part are formed into a sharp-pointed cross section, and the tip side of the fixed blade is formed into a fixed beak having a valley-shaped arc shape and a sharp-pointed shape. The movable blade is provided so as to be swingable by a hydraulic cylinder, with a concave portion followed by a flat protrusion formed at the rear thereof, and a cross section of the tip end of the fixed blade being formed as a concave portion. When the movable blade is closed, the movable beak-like blade part and the linear blade part are located approximately at the center of the concave part of the fixed blade, and the width of this concave part is equal to the width of the movable beak-like blade part and the linear blade part. A pipe crushing device characterized in that the pipe crushing device is approximately multiple times the thickness of the pipe.