JPH0154484B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a peeling and crushing machine used for peeling and crushing the asphalt, concrete, etc. pavement base from the ground, mainly for repair work of paved roads made of asphalt, concrete, etc. It is.

B. Prior Art Generally, the work of stripping a paved roadbed made of asphalt, concrete, etc. is carried out using a stripping tool that has a stripping claw integrally attached to the tip of a drive arm of a power shovel so that it can be raised and lowered by a lifting cylinder. When peeling off the pavement roadbed, the peeling claws of the peeling tool are inserted between the ground and the pavement roadbed, and then the undulation cylinder is operated to pull the peeling claws upward to peel off the pavement roadbed. However, with this method, the stripping work is mainly performed by moving the stripping claw in only one direction with the undulation cylinder, so stripping cannot be done very efficiently, there is a limit to the stripping force, and the pavement When the film is thick, the peeling process is time consuming. Moreover, the cylinder for opening and closing the crushing claw had the disadvantage that it could not be used for peeling at all.

B. Object of the Invention The object of the present invention is to provide a peeling and crushing machine that can simply and easily peel off asphalt, concrete, etc., even if the pavement base is thick.

C. Structure of the Invention The present invention provides a support body which is attached to the tip of a drive arm of a power shovel so as to be able to rise and fall, and has a tapered peeling claw integrally formed at the tip, and a support body which is attached to the support body opposite to the peeling claw. It consists of a crushing pawl that is rotatably mounted, and an opening/closing cylinder that rotates the crushing pawl. When a penetration part that enables movement is formed and the crushing claw is positioned within the penetration part of the peeling claw, and the lower surfaces of both nails are approximately the same, the sharp end of the peeling claw It is positioned forward of the tip.

D. Embodiment FIG. 1 and FIG. 2 show an embodiment of the present invention. In the figure, reference numeral 1 denotes a peeling and crushing machine according to the present invention, which is rotatably attached to the tip of a drive arm 2 of a power shovel (not shown) via a pivot 3. 4 is a cylinder rod of an undulating cylinder (not shown) attached to a predetermined part of the drive arm 2; 5 and 6 are links; the tip of the link 5 is attached to the peeling and crushing machine 1 via a pivot 7; The crusher 1 is caused to rise and fall about the pivot 3 by the operation of the above-mentioned hoisting cylinder. Reference numeral 8 denotes a supporting body constituting the above-mentioned peeling and crushing machine 1, which is connected to an outer plate 10 formed by bending side plates 9, 9 into a predetermined shape, and has a space 11 formed therein, and a support body 8 at its lower end. A tapered peeling claw 12 extending forward is integrally provided. The peeling claw 12 has a sharp tip 1 at its tip.
The root portions 15 of the arm portions 14, which branch out from each other in a shape that widens toward the end, are connected by a connecting plate 16 having a box shape in a closed cross section, thereby forming a penetrating portion 17 surrounded by the sharp portion 13, the arm portion 14, and the connecting plate 16. It is something. Reference numeral 18 denotes a slightly tapered crushing claw rotatably attached to a predetermined portion of the support body 8 by a pivot 19. The peeling claw 12 is supported so as to face the peeling claw 12 so as to obtain the peeling claw. 21 is a crushing claw opening/closing cylinder housed in the space 11 of the support body 8 and pivotably supported by an appropriate means;
The tip of the rod 22 is connected to the corner 2 of the crushing claw 18.
It is pivoted to 3. Then, as the cylinder 21 extends and retracts, the crushing claw 18 opens and closes up and down and passes through the penetration part 17, which allows the crushing claw 18 to rotate from above to below the peeling claw 12, Further, when the lower surfaces of both the claws 18 and 12 are substantially the same, the sharp portion 13 at the tip of the peeling claw 12 is located in front of the tip 18a of the crushing claw 18.

Next, a procedure for peeling the pavement base 24 made of asphalt, concrete, etc. from the ground 25 using the peeling and crushing machine 1 will be explained. That is, first, the opening/closing cylinder 21 is operated and the rod 2 is opened.
2 and extend the crushing pawl 18 in the closing direction (clockwise) about the pivot 19 until the tip 18a of the crushing pawl 18 overlaps with the penetrating portion 17 of the peeling pawl 12 as shown by the dashed line in FIG. The driving arm 2 is operated while the power shovel is being rotated, and the sharp portion 13 of the peeling claw 12 is removed from the paved roadbed 2.
4 and the ground 25 to cause initial separation. Next, the rod 22 of the opening/closing cylinder 21 is extended and the crushing claw 18 is opened.
Pass the tip 20 of the peeling claw 12 through the penetration part 17 and press it against the ground 25, and use the ground 25 as a support surface to rotate the peeling claw 12 upward by the reaction force, thereby removing the pavement. The roadbed 24 is further lifted from the ground 25 to perform secondary peeling. At this time, the rod 4 of the undulation cylinder can be extended at the same time to perform more powerful peeling. Next, open/close cylinder 2
The first rod 22 is retracted, and the crushing claw 18 is rotated in the opening direction (counterclockwise) to return it to its original position all at once. During the return operation of the crushing claws 18, the upper surface 18a of the tip part lifts the pavement base 24 further upwards to perform tertiary peeling, and a series of the above-mentioned initial peeling and subsequent secondary and tertiary peeling are performed. By the continuous peeling operation, the pavement subbase 24 is completely peeled, bent and separated into small pieces or small lumps of the pavement subbase 24a. In this way, the paved roadbed 24
When it is completely peeled off and becomes the pavement base 24a,
Following the above operation, after further intruding the opened peeling claw 12, the cylinder rod 22 of the opening/closing cylinder 21 is extended again, the crushing claw 18 is rotated in the closing direction (clockwise), and the stripping claw 12 is removed from the paved road. Board 24a
is held between the peeling claw 12 and the crushing claw 18, and the penetrating portion 1 is
A paving subbase 24a is brought into contact with the inner peripheral edge of 7a, and the inner peripheral edge is used as a fulcrum to bend the paved road subbase 24a with a small clamping pressure, and further crush it into small pieces. Alternatively, the paving subgrade 24a is held between the peeling claws 12 and the crushing claws 18 and is transferred by the undulating cylinder to swing the support body 8 up and down, causing the paving subbase 24a to collide with the ground 25, etc. The material may be crushed into small pieces by the impact force. Of course, the peeled and crushed material can also be loaded into a dump truck or the like by being held there.

The above-mentioned method of peeling and crushing the pavement base 24 is just an example, and is not limited to the above explanation.
Of course, various peeling and crushing methods can be carried out by opening and closing the opening and closing operations.

Effects of the Invention According to the present invention, it is possible to efficiently and quickly peel and crush paved roadbed made of asphalt, concrete, etc. through initial, secondary and tertiary peeling operations by continuous operation in both expansion and contraction directions of the opening/closing cylinder of asphalt, concrete, etc. Even if the paved roadbed is thick, it can be easily and easily peeled off to a large extent, and it can be crushed finely with a small force by using the penetration part of the peeling claw, so that work efficiency can be greatly improved.

[Brief explanation of drawings]

FIG. 1 is a plan view of a peeling and crushing machine according to the present invention, FIG. 2 is a side view of the peeling and crushing method, and FIG. 3 is a cross-sectional view of the peeling claw. 2... Drive arm, 8... Support body, 12...
Peeling claw, 13... Sharp part, 17... Penetration part, 18
... Crushing claw, 20 ... Tip, 21 ... Opening/closing cylinder.

Claims (1)

[Scope of Claims] 1. A support body which is attached to the tip of a drive arm of a power shovel so as to be able to rise and fall and has a tapered peeling claw integrally formed at the tip; It consists of a crushing pawl that is pivotally mounted to be movable, and an opening/closing cylinder that rotates the crushing pawl, and a crushing pawl that rotates from above to below the peeling pawl is placed in the center of the peeling pawl of the support body. and when the crushing claw is positioned within the penetration part of the peeling nail, and the lower surfaces of both nails are substantially the same, the sharp part at the tip of the peeling nail is aligned with the tip of the crushing nail. A peeling and crushing machine characterized by being located in front of the part.