JP2003094429A - Cutting device with ring saw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device with a ring saw capable of being attached to a shovel type excavator having high mobile power as an attachment in a freely detachable manner and capable of appropriately attaching ring saws having different diameters. SOLUTION: The cutting device (2), which comprises the ring saw (1) attached to the cutting device main body (3) in a detachable manner and a plurality of guide rollers (4), (5) and (6) for holding the ring saw (1) to a predetermined position, is attached to the leading end of the arm (11) of the shovel type excavator (7) such as a backhoe or the like as the attachment in a freely detachable manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device equipped with a ring saw, which is an annular saw blade having a cutting portion on its outer circumference.

[0002]

2. Description of the Related Art Conventionally, a cutting device of a type in which a ring saw is rotated to cut an object to be cut has been known. For example, Japanese Utility Model Laid-Open No. 49-3195 discloses a portable cutting device with a ring saw. Such a cutting device with a ring saw is characterized by extremely low friction loss during cutting and good cutting efficiency.

[0003]

However, the conventional cutting device with a ring saw is not suitable for large-scale work such as cutting out stones or cutting a concrete structure, and a cutting device with a ring saw having a larger size and higher mobility is available. Was needed. Further, in the conventional cutting device with a ring saw, the diameter of the ring saw cannot be easily changed according to the purpose of use.

In view of the above, the present invention solves the above-mentioned problems, and can be detachably attached to a highly excavating excavator excavator as an attachment or a ring saw with a different diameter can be attached. The purpose is to provide.

[0005]

In order to solve the above problems, a cutting device with a ring saw according to the present invention includes a ring saw detachably attached to a cutting device body and a plurality of ring saws for holding the ring saw at a predetermined angle. A cutting device consisting of a guide roller and a detachable attachment as an attachment to the arm tip of an excavator excavator such as a backhoe for cutting objects such as stones and concrete structures. Is characterized by.

Further, in a cutting device with a ring saw comprising a ring saw detachably attached to the cutting device main body and a plurality of guide rollers for holding the ring saw at a predetermined angle, the ring saw has an inner peripheral surface. Is driven to rotate by a drive gear that meshes with the internal teeth formed on the both sides of a line passing through the center of the drive gear and the center of the ring saw, and a pair of guide rollers from the opposite side to the drive gear. It is characterized in that the ring saw is held at a predetermined angle by the guide roller and the drive gear in contact with the peripheral surface of the ring saw.

At least one of the guide rollers can be moved forward and backward with respect to the peripheral surface of the ring saw, and can be applied to ring saws having different diameters by moving the guide roller forward and backward.

Further, the guide roller which can advance and retreat with respect to the peripheral surface of the ring saw performs the advancing and retracting operation by moving a supporting member supporting the guide roller, and the supporting member and the cutting device main body. A fixing means for fixing the guide roller at a predetermined advance / retreat position by fixing the supporting member is provided between them. Specifically, the support member is composed of a movable arm rotatably attached to the main body of the cutting device. By rotating the movable arm, the guide roller is moved forward and backward, and the movable arm is moved. By fixing the guide roller at a predetermined rotation position by the fixing means, the guide roller is fixed at a predetermined advance / retreat position.

In addition, the cut portion of the ring saw is composed of a plurality of diamond tips provided along the outer circumference of the ring saw. Further, a shock absorbing material for reducing or eliminating noise generated by the contact is attached to a portion of the guide roller where the guide roller and the ring saw contact each other.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIGS. 1 and 2,
A cutting device (2) with a ring saw (1) according to an embodiment of the present invention holds a ring saw (1) detachably attached to a cutting device body (3) and the ring saw (1) at a predetermined position. It is composed of a plurality of guide rollers (4), (5) and (6).

As shown in FIG. 3, the cutting device (2) is attached as an attachment to a shovel excavator (7) such as a backhoe to cut an object (8) to be cut such as a stone or a concrete structure. belongs to. This cutting device
(2) has a pair of mounting pieces (9) on the upper surface of the cutting device body (3).
(9) is provided and the excavator excavator is equipped with the mounting holes (10) (10) y formed in the mounting pieces (9) (9).
It is attached to the tip of the arm (11) of (7). The object to be cut (8) is not limited to a stone material or a concrete structure, and may be wood or a metal material.

As described above, the cutting device (2) is highly versatile because it can be attached as an attachment to a ready-made excavator excavator (7). Further, it is economical because it is not necessary to purchase a large-scale dedicated cutting device for cutting stones and the like.

As shown in FIG. 4, a hydraulic motor (12) is attached below the cutting device body (3). The hydraulic motor (12) has a structure in which the upper end of the vertical arm (13) projecting upward from the upper surface of the hydraulic motor (12) is attached to the cutting device body.
It is arranged so as to be inserted into the fitting portion (14) formed on the lower surface of (3). Then, a hole portion (15) having no thread groove formed on the ceiling portion of the fitting portion (14), and a bolt hole (16) having a thread groove formed on the upper surface of the vertical arm (13).
A bolt (17) is attached to the cutting device body (3) by screwing it in from the inside.

The bolt (17) has a hole (1
Since it idles for 5), it has a bolt hole (1
Only screwed onto 6). Further, a stopper material (18) is attached to the bolt (17), and since the head portion of the bolt (17) and the stopper material (18) sandwich the ceiling portion of the fitting portion (14), The head of the bolt (17) is kept on the ceiling. In addition, the vertical arm (1
Even if the bolt (17) is screwed or loosened, 3) is inserted into the fitting portion (14) without rotating together with the bolt (17).

The height position of the hydraulic motor (12) can be adjusted by the screwing condition of the bolt (17). That is, if the bolt (17) is deeply screwed into the vertical member (13), the length of the portion of the bolt (17) protruding from the vertical member (13) becomes small, and the hydraulic motor (12) rises, When the bolt (17) is loosened, the length of the protruding portion is increased and the hydraulic motor (12) is lowered. The method of adjusting the height of the hydraulic motor (12) is not limited to the above, and may be, for example, a hydraulic type.

The hydraulic motor (12) has a shaft (20) projecting perpendicularly to the side surface (18) of the cutting device body (3), and a hydraulic motor is provided at the tip of the shaft (20). A drive gear (21) for transmitting the power of (12) to the ring saw (1) is attached.

The ring saw (1) comprises an annular saw body (22), a saw portion (23) is provided on the outer peripheral surface of the saw body (22), and the drive gear (21) is provided on the inner peripheral surface. Internal teeth (2
4) has been formed.

As shown in FIGS. 1 and 2, the ring saw (1) engages with the drive gear (21) and the internal teeth (24) while the drive gear (21) is engaged with the inner periphery of the ring saw (1). It is mounted so that the surface is placed. Therefore, when the drive gear (21) is rotated by the hydraulic motor (12), the internal teeth (24) are interlocked with the drive gear (21) to rotate the ring saw (1).

On the outer periphery of the saw body (22), as shown in FIG. 5, a recess (26) for attaching a diamond tip (25).
, Are formed in a line at equal intervals. Furthermore, bolt holes (27) and (27) for attaching the diamond tip (25) are formed on the bottom surface of each recess (26).

Each diamond tip (25) has a saw body (2
The base part (28) fitted in the recess (26) of 1) and the base part (28)
And a blade portion (29) fixed to the upper surface of the.

The pedestal portion (28) has its upper surface near both ends,
Bolt holes (30) (30) communicating with the lower surface side are formed.
The base portion (28) is fitted into the recess (26), and at the same time, into the bolt holes (30) (30) of the base portion (28) and the bolt holes (27) (27) of the recess (26). The bolts (31) and (31) are fixed to the saw body (21) by screwing in from above. The diamond tip (25) is subject to a heavy load, so the bolt (3
High tensile bolts are desirable for 0) and (30).

The blade portion (29) is attached so that its width is larger than the width of the saw body (22) and the base portion (28), and the blade portion (29) projects outward from the outer peripheral surface of the saw body (22). In the cutting work, only the blade part (29) is the object to be cut (8).
To contact. Therefore, even if the cutting work is repeated,
Only the (29) wears and the saw body (22) does not wear, so if the ring saw (1) becomes less sharp, replace only the diamond tip (25) with that ring saw.
It is economical to be able to regenerate (1). Further, since the diamond tip (25) is fixed by the bolts (30) and (30), it can be easily replaced.

The guide rollers (4), (5) and (6) are ring saws.
It is intended to hold (1) at a predetermined position, and comprises a main guide roller (4) and two sub guide rollers (5) and (6).

The main guide roller (4) is located above the drive gear (21) so that the ring saw (1) is vertically sandwiched by the main guide roller (4) and the drive gear (21), and the main body of the cutting device is cut. (3) It is rotatably attached to the shaft (31) protruding from the side surface (19). Further, on the outer peripheral surface of the main guide roller (4), a groove portion (32) for fitting the cutting portion (23) of the ring saw (1) is provided.

Therefore, at the time of cutting work, the ring saw (1)
The main guide roller (4)
In order to hold down this ring saw (1) from above,
The ring saw (1) is lifted up to drive the drive gear (21).
It does not come off. Therefore, the internal teeth (24) of the ring saw (1) and the drive gear (21) can be reliably meshed, and the power of the hydraulic motor (12) can be efficiently transmitted to the ring saw (1). In addition, the ring saw (1) is not only lifted upward, but is also held by the groove portion (32) of the main guide roller (4) so as not to sway from the left and right, so that the ring saw (1) falls off from the cutting device body (3). Nothing.

The auxiliary guide rollers (5) and (6) are the main body of the cutting device.
A fixed auxiliary guide roller (5) rotatably supported by a shaft (35) protruding from the vicinity of the tip of a fixed arm (34) provided on the side surface (19) of (3), and a cutting device body ( A shaft protruding from the vicinity of the tip of the movable arm (36) provided on the side surface (19) of (3).
The movable auxiliary guide roller (6) is rotatably supported by (37).

As shown in FIG. 1, the auxiliary guide rollers (5) and (6) have a center (P) of the drive gear (21) and a ring saw (1).
It is arranged on both sides of the line (L) passing through the center (Q) and in contact with the outer peripheral surface of the ring saw (1) from the outer peripheral side. In this way, ring saw (1)
Are pressed from the upper left and right sides by the auxiliary guide rollers (5) and (6), so that the auxiliary guide rollers (5) and (6) do not swing along the surface including the ring saw (1) and the auxiliary guide rollers (5) and (6). The rollers (5) and (6) and the drive gear (21) can hold the ring saw (1) at a predetermined angle.

Further, groove grooves (38) (38) for fitting the cut portions (13) of the ring saw (1) are provided on the outer peripheral surfaces of the sub guide rollers (5) and (6), respectively. Cage, ring saw
Rolling of (1) is suppressed.

A cushioning material (39) (39) y is attached to each of the main guide roller (4) and the sub guide rollers (5) and (6) on the surface that contacts the cutting portion (23) of the ring saw (1). Has been. The cushioning materials (39) (39) y are for reducing or eliminating noise caused by contact between the guide rollers (4) (5) (6) and the ring saw (1), and are made of hard rubber.

Since the cushioning material (39) (39) y is attached to the contact portion with the ring saw (1) as described above, the ring saw (1) and the guide rollers (4) (5) (6) are The noise generated by the contact between the two is suppressed. The material of the cushioning material (39) (39) y is not limited to the hard rubber, but the rotating ring saw (1)
Any material can be used as long as it is low in noise even if it comes into contact with.

Next, the movable guide roller (6) will be further described. The movable guide roller (6) can be moved forward and backward with respect to the peripheral surface of the ring saw (1), and can be applied to the ring saws (1) having different diameters. That is, the movable arm (36) as a supporting member for supporting the movable guide roller (6) has a surface (including the ring saw (1)) on the shaft (40) protruding from the side surface (18) of the cutting device body (3). This movable arm (36) is attached so as to be parallel and rotatable with
The movable auxiliary guide roller (6) is advanced and retracted by rotating the.

The movable arm (36) can be fixed at a predetermined rotational position by a fixing means (41). By fixing the movable arm (36), the movable auxiliary guide roller (6) can be fixed. It can be fixed in a predetermined forward / backward position.

The fixing means (41) is provided between the movable arm (36) and the cutting device body (3), and as shown in FIG. 6, it is provided on the side surface (19) of the cutting device body (3). First attached
The connecting piece (42), the second connecting piece (43) attached to the movable arm (36), and the bolt (4) connecting the connecting pieces (42) (43).
It consists of 4).

The first connecting piece (42) has a hole (4
5) is formed, and is rotatable about a direction perpendicular to the plane including the ring saw (1). A bolt hole (46) having a thread groove is formed in the second connecting piece (42) and is rotatable about a direction perpendicular to a plane including the ring saw (1).

The bolt (44) penetrates the hole (45) of the first connecting piece (42) and the bolt hole (46) of the second connecting piece (43) from the side of the first connecting piece (42). Is plugged in like this. When the bolt (44) is screwed, the bolt (44) idles with respect to the hole (45) of the first connecting piece (42) having no screw groove, and the second connecting piece (43) having the screw groove is rotated. Since it is screwed into the bolt hole (46), the gap between the first connecting piece (42) and the second connecting piece (43) becomes narrow, and the movable arm (36) rotates upward. Meanwhile, the bolt
When the (44) is loosened, the gap between the first connecting piece (42) and the second connecting piece is widened, and the movable arm (36) rotates downward.

A stopper member (47) is attached to the bolt (44), and the head of the bolt (44) and the stopper member (47) sandwich the first connecting piece (42), That bolt
The head of (44) is designed so as not to separate from the first connecting piece (42).

In this way, by adjusting the mounting angle of the movable arm (36) with the bolts (44) of the fixing means (41), the movable auxiliary guide roller (6) is moved to move the auxiliary guide roller (5). (6) Since the distance between (6) and (6) can be adjusted, the auxiliary guide rollers (5) and (6) can be arranged at optimal positions according to the diameter of the ring saw (1) to be attached.
Therefore, the ring saws (1) having various diameters can be securely held to prevent swinging and rolling, and the diameter of the ring saw (1) can be changed according to the content of the cutting work.

The number of movable guide rollers is not limited to one, and a plurality of movable guide rollers may be provided. For example, the fixed sub guide roller (5) and the main guide roller (4) may be movable. The mounting angle of the movable guide roller may be adjusted with a hydraulic jack or the like.

In the above structure, the cutting device (2) can freely adjust the diameter of the ring saw (1) and the number of diamond tips (25). For example, when the cutting depth is small, the cutting device (2) has a small diameter. With the ring saw (1), the number of rotations can be increased to speed up the cutting, and the number of diamond tips (25) can be reduced to be economical. When a deep cut is required such as cutting stone or cutting rock, it is possible to slowly cut with a large force using a large diameter ring saw (1).

The present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention.

For example, the number of guide rollers is not limited to the above three, and the number may be increased or decreased. The position of the guide roller is not limited to the outer peripheral side of the ring saw (1), but may be arranged on the side surface side or the inner peripheral surface side of the ring saw (1). Therefore, without disposing the main guide roller (4),
It is also conceivable to arrange only the sub guide rollers (5) and (6). However, in order to securely hold the ring saw (1), it is desirable to dispose a pair of guide rollers on both sides of a line passing through the center of the drive gear (21) and the center of the ring saw (1).

[0042]

The cutting device of the present invention is highly versatile because it can be attached to an excavator excavator such as a backhoe, and it is not necessary to purchase a large-scale dedicated cutting device for cutting stones and the like. It is economical.

Further, on both sides of the line passing through the center of the drive gear and the center of the ring saw, the pair of guide rollers are in contact with the peripheral surface of the ring saw from the side opposite to the drive gear, so that the structure is simple and reliable. The ring saw can be held, which is economical and easy to maintain.

Further, since at least one guide roller can move forward and backward with respect to the peripheral surface of the ring saw, the guide roller can be arranged at an optimum position corresponding to the diameter of the ring saw to be attached. , Ring saws of various diameters can be attached according to the content of the cutting work. Moreover, the guide rollers that can move forward and backward are
In addition to moving the support member to perform the forward / backward movement, the support member is provided with fixing means, so that the guide roller can be easily moved / fixed, and the ring saw replacement work is easy. is there.

In addition, since the cutting portion of the ring saw is composed of a plurality of diamond tips, when the ring saw becomes poor in sharpness, the ring saw can be regenerated by replacing only the diamond tip, which is economical. . Further, since the cushioning material is attached to the guide roller, it is possible to suppress the noise generated by the contact between the ring saw and the guide roller.

[0046]

[Brief description of drawings]

FIG. 1 is a side view showing a cutting device with a ring saw according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the vicinity of the upper end of the ring saw and the cutting device body.

FIG. 3 is a perspective view showing a usage state.

FIG. 4 is a vertical cross-sectional view showing the vicinity of the upper end of the ring saw and the cutting device body.

FIG. 5 is a perspective view showing a diamond tip.

FIG. 6 is a vertical sectional view showing a fixing means.

[Explanation of symbols]

(1) Ring saw (2) Cutting device (3) Cutting device body (4) (5) (6) Guide roller (7) Excavator excavator (8) Objects to be cut (11) Arm (23) Cutting part (25) Diamond tip (36) Movable arm (39) Buffer material (41) Fixing means

Claims (7)

[Claims] 1. A cutting device comprising a ring saw detachably attached to a cutting device main body and a plurality of guide rollers for holding the ring saw at a predetermined angle, which is used for a shovel excavator such as a backhoe. A cutting device with a ring saw for cutting a cutting object such as a stone or a concrete structure, which is detachably attached to an end of an arm as an attachment. 2. A cutting device with a ring saw comprising a ring saw detachably attached to a cutting device main body and a plurality of guide rollers for holding the ring saw at a predetermined angle, wherein the ring saw has an inner peripheral surface thereof. Is driven to rotate by a drive gear that meshes with the internal teeth formed on the both sides of a line passing through the center of the drive gear and the center of the ring saw, and a pair of guide rollers from the opposite side to the drive gear. A cutting device with a ring saw, which is in contact with a peripheral surface of the ring saw and holds the ring saw at a predetermined angle by these guide rollers and a driving gear. 3. At least one of the guide rollers can be moved forward and backward with respect to the peripheral surface of the ring saw, and can be applied to ring saws having different diameters by moving the guide roller forward and backward. Item 2. A cutting device with a ring saw according to Item 2. 4. A guide roller capable of advancing and retracting with respect to the peripheral surface of the ring saw performs the advancing and retracting operation by moving a supporting member supporting the guide roller, and the supporting member and the cutting device main body. The cutting device with a ring saw according to claim 3, wherein a fixing means for fixing the guide roller at a predetermined advance / retreat position by fixing the supporting member is provided between them. 5. The supporting member is composed of a movable arm rotatably attached to the cutting device main body, and by rotating the movable arm, the guide roller is moved forward and backward, and the movable arm is moved. The cutting device with a ring saw according to claim 4, wherein the guide roller is fixed at a predetermined advance / retreat position by fixing the guide roller at a predetermined rotational position by the fixing means. 6. The cutting device with a ring saw according to claim 1, wherein the cutting portion of the ring saw comprises a plurality of diamond tips provided along the outer periphery of the ring saw. 7. The guide roller according to claim 1, wherein a shock absorbing material for reducing or eliminating noise generated by the contact is attached to a portion where the guide roller and the ring saw are in contact with each other. The cutting device with a ring saw according to any of the above.