JPS6038721Y2 - Cutting waste sending device for roadbed cutting machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cutting sludge delivery device for sending out cutting sludge to a safe position in a roadbed cutting machine used for cutting grooves in a roadbed.

Conventionally, a road cutting machine is known which has a structure in which a rotary shaft to which rotation is transmitted from a motor is horizontally supported on the machine body, and a cutter disk having a cutting bit protruding from the circumferential surface is fixed to the rotary shaft. However, when this conventional machine is used for trench work with its rotating cutter disk biting into the roadbed,
As the cutter disk rotates, the cutting debris (so-called scraps) cut by the cutting bit on the peripheral surface is scooped up by the cutting bit, makes almost a full rotation, falls near the face, and is then bitten by the rotating cutting bit. This has resulted in problems with the cutting action of the cutting bit.

The purpose of this invention is to provide a cutting sludge delivery device for a roadbed cutting machine that can eliminate the drawbacks of the conventional method. It's there.

The details will be explained below with reference to the drawings.

In FIG. 1, a boom 2 is attached to a self-propelled cart 1 so as to be able to rise and fall freely, and the upper end of a body 4 of a roadbed cutting machine 3 is attached to the tip of the boom 2 so as to be able to swing freely.

As shown in the second and third figures, the body 4 of the roadbed cutting machine has a rectangular cap shape with a rectangular horizontal cross section and is open at the bottom.
Both ends of a shaft 7 are horizontally and rotatably supported on the left and right side walls 5 and 6, and in this example, three
A plurality of cutter disks 8 are fixed to each other at intervals, with a portion of each cutter disk protruding downward from the open lower surface of the body 4.

9... are cutting bits protruding from the circumferential surface of the cutter disk 8.

The delivery chute 10 has a rectangular plate shape, and from one end thereof there are cut grooves 11 of an appropriate length and a width slightly wider than the thickness of the cutter disk at a position corresponding to each cutter disk.
... is formed, thereby forming a wide chute base 12 on the other end and Sayama chute branch portions 13 extending from the chute base to both sides of each of the cut grooves 11, The chute 10 is tilted with the chute branch 13 facing upward at the upper half of the cutter disk (on the right side of the cutter disk rotating clockwise in FIG. 1). The cutter disc 8 is inserted into the cut groove 11 of the chute while facing in the string direction with respect to the disc 8.
With the upper part rotatably positioned, in this state, the fuselage side walls 5,
Both left and right ends of the chute 10 are fixed to brackets 14 and 14 protruding from the inner surface of the chute 6 with screws 15.

The base 12 of the chute 10 extends outside the machine through a window 16 formed in the rear wall of the machine body 4, and the tip of the branch part 13... in this example is connected to the apex of the cutter disk 8... and the shaft 7. It extends to the middle position.

Note that edge plates 17 are provided protruding from both left and right ends of the upper surface of the chute 10 and from the front end and left and right ends of the branching portion 13, respectively.

Reference numeral 18 denotes a hydraulic motor installed on the upper surface of the machine body 4, and rotation is transmitted by a chino 21 from a sprocket 19 fixed to its output shaft to a sprocket 20 fixed to the cutter disk shaft 7.

22... are grounding wheels provided on both left and right outer sides of the fuselage 4, and are designed to adjust downward movement.

23 is a bellows that covers between the lower end of the opening of the body 4 and the roadbed surface.

The operation of this device will be explained next.

As shown in FIG. 1, the cutter disk 8 is rotated clockwise by starting the motor 18, and the cutting machine 3 is positioned on the roadbed F with the cutter disk biting into the roadbed. As the cart 1 moves, the cutting machine 3 is gradually advanced to the left to start cutting the groove.

As the cutting machine moves forward, the cutting bits 9 of the rotating cutter discs 8 cut the front roadbed f from bottom to top, and some of the cutting waste is removed from the front roadbed. While falling onto the upper surface of f, it is scooped up by the cutting bit 9 and carried upwards, and then, when it passes the top of the cutter disc 8..., it falls onto the chute 10 due to its own weight, and then moves along the inclined chute 10. It falls onto the roadbed at a considerable distance from the cutter disc 8...

Although some of the cutting sludge that has fallen onto the rear roadbed falls into the cutting groove P, it does not interfere with the cutting action of the cutter disks 8 .

In the other embodiment shown in FIG. 4, pin receivers 24a are provided on both left and right sides of the end of the branching portion 13a of the delivery chute 10a.
The pin receiver 24a is fitted onto a pin 25a protruding from the left and right side walls of the machine body 4a, and the chute 10a is supported swingably around the pin 25a, and the left and right ends of the base 12a of the chute are supported by springs 26a. This is an example in which the suspension is elastically supported, and other structures are substantially the same as in the above example.

According to this example, the chute 10a is moved by the motor 1 when cutting the through groove.
It vibrates effectively in response to the vibrations of the chute 8a, etc., thereby ensuring that the cutting waste that has fallen onto the chute 10a descends.

In the present invention, it goes without saying that a cutting machine equipped with one cutter disc may be suitably implemented according to the above example, if necessary.

According to the cutting sludge sending device for a roadbed cutting machine of this invention, the sludge cut by the cutting bit of the cutter disk during cutting into the roadbed is scooped up by the cutting bit and dropped onto the chute to a position away from the cutter disk. As a result, effective groove cutting can be continued without the conventional disadvantage of causing cutting sludge to fall near the face and impeding the cutting action of the cutting bit.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; Fig. 1 is a side view of a self-propelled trolley with a roadbed cutting machine, Fig. 2 is an enlarged vertical cut side view of the cutting machine, and Fig. 3 is a cross section taken along the line ■-■ of Fig. 2. FIG. 4 is an enlarged vertical cutaway side view of another embodiment with the cutter disk omitted. 4.4a... Airframe, 7,7a... Axis,
8, 8a...Cutter disk, 9...
- Cutting bit, 10.10a... Delivery chute, 11. lla cut groove, 12, 12a... Chute base, 13, 13a... Shoot branch.

Claims (1)

[Scope of Claim for Utility Model Registration] A roadbed cutting machine in which a cutter disk having cutting bits on the circumferential surface is attached to a rotary shaft supported horizontally on the machine body, in which a cut groove is provided from one end of a rectangular plate-shaped body. A delivery chute formed of a wide chute base at the end and a narrow chute branch extending from the base to both sides of the cut groove is rotated as the upper half of the cutter disc rotates. The cutter disc is rotatably positioned in the cut groove with the branch part facing upward and slanting in the direction of the cutter disc, and the cutter disc is rotatably positioned in the cut groove. device.