JPH1058434A - Flat chain, cutter chain and cutting device - Google Patents

Abstract

(57) [Problem] To provide a cutter chain 1 in which even when the tension applied to a flat chain body is weakened, a gap is hardly formed in a sliding surface between flaps, and foreign matter is less likely to enter the gap. SOLUTION: A cutting blade 4 is fixed to a flat chain body in which flaps 2 are connected endlessly. One end of the flap 2 is formed with a connecting protrusion 6 having a convex sliding surface 6C, and the other end is formed with a connecting concave portion 8 having a concave sliding surface 8B. 2 are fitted in the two connecting recesses 8. Ring engaging grooves 10 and 12 are formed in the distal end portion of the connecting projection 6 and the flap 2, respectively, and a C-shaped ring 14 is fitted therein, so that the flaps 2 are irremovably connected in the thickness direction. .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat chain body suitable as a base for a cutting tool used for cutting or dismantling hard materials such as wood and stone, vehicles and structures, and a power transmission chain. And a cutter chain using the chain body as a base, and a cutting device using the cutter chain.

[0002]

2. Description of the Related Art The present inventor has previously described Japanese Patent Application No. Hei.
No. 7, etc., proposed a flat chain body, a cutter chain using the same, and a cutting device. The flat chain body according to the above-mentioned application is formed by connecting a plurality of flat flaps so as to be rotatable in the same plane, and one end of each flap is provided with a connecting protruding portion that expands toward the tip. A connection notch is formed at the other end of the flap so that the connection protrusion fits into the other end of the flap, and the connection protrusion is fitted into a connection notch of another adjacent flap. Thus, the respective flaps are rotatably connected.

In this flat chain, in order to prevent the flaps from being separated from each other, grooves and ridges are formed on the mutually sliding surfaces of the connecting projections and the connecting notches, and the grooves and the ridges are engaged. Or a structure in which grooves are formed at the inner circumferential end of each flap and these grooves are engaged with one edge of the backup plate when a flat chain is used. Was not detached from the notch for connection.

On the other hand, the cutter chain according to the above-mentioned application has an abrasive layer chip or a saw blade fixed to the outer peripheral end of the flat chain body. Further, the cutting device according to the above application winds the cutter chain around a sprocket, rotates the sprocket, and runs the cutter chain to cut the work material.

[0005]

In the prior art, when the tension is applied to the flat chain body, it is good. However, when the tension is weakened, the sliding of the connecting projection and the connecting notch is performed. There is a problem that a gap is formed in the surface, and if dust or chips enter the gap, the sliding resistance increases.

Further, in order to enable attachment / detachment to the sprocket or replacement when the flap is worn, it is desirable that the connecting portion of the flap can be separated at least at a part of the flat chain body. If the thickness of the flat chain is reduced in order to reduce the thickness, it is difficult to ensure both the strength of the connecting part and the ease of disconnection and reconnection. There was a problem that damage was inevitable.

The present invention has been made in view of the above circumstances, and even when the tension applied to the flat chain body is reduced, a gap is not easily formed on the sliding surface between the flaps, and foreign matter is less likely to enter the gap. It is another object of the present invention to provide a flat chain body, a cutter chain, and a cutting device in which the connecting portion has a high strength even when the thickness of the flap is small and the connecting / disconnecting operation is easy.

[0008]

In order to solve the above-mentioned problems, a first flat chain body according to the present invention comprises a plurality of flat flaps connected endlessly on the same plane. A connecting projection having an arc-shaped first sliding surface is formed at one end of the connecting member, and a second sliding surface complementary to the first sliding surface is formed at the other end of the flap. A concave portion is formed, and the connecting convex portion is fitted to the connecting concave portion of another adjacent flap, and the first sliding surface and the second sliding surface are slidably contacted with each other. Each flap is connected to each other so as to be rotatable in the plane, and the flap is configured to press a first sliding surface of the connecting convex portion against a second sliding surface of the connecting concave portion. A biasing means is provided.

A second flat chain body according to the present invention comprises:
A large number of flat flaps are connected endlessly on the same plane, and one end of each flap is formed with a connecting projection having an arc-shaped first sliding surface, and the other end of the flap A connecting concave portion having a second sliding surface complementary to the first sliding surface is formed on the first flap, and the connecting convex portion is fitted into a connecting concave portion of another adjacent flap. By making the sliding surface and the second sliding surface slidably contact each other, the respective flaps are rotatably connected to each other in the plane, and the connecting protrusion and the flap include:
A jig accommodating portion having a circular or arc shape centered on the center of curvature of the first sliding surface and the second sliding surface is formed,
Each of the flaps is irremovably connected in the thickness direction by detachably fitting a connection jig having a circular or arc shape in the outer periphery of the jig accommodating portion.

In the cutter chain according to the present invention, a cutting blade is fixed to each end of the flat chain body on the outer peripheral side of each of the flaps.

Further, the cutting device according to the present invention comprises: a sprocket for rotatably supporting the cutter chain; a cutter driving mechanism for running the cutter chain by rotating the sprocket; A cutting mechanism for moving at least one of the material and the cutter chain to the other side along the cutter winding surface.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment of Cutter Chain] FIG. 1 is a front view showing a first embodiment of a cutter chain according to the present invention wound around a sprocket 30 of a cutting device described later, and FIGS. FIG. 3 is an explanatory diagram of details of the cutter chain 1. The cutter chain 1 has a plate-shaped chain body in which a number of flaps 2 having a constant thickness and the same shape are connected endlessly along the same plane, and a chain outer peripheral end face of each flap 2 of the plate-shaped chain body. The cutting blades 4 are fixed two by two. And the sprocket 30
, The work material can be cut by each cutting blade 4.

As shown in FIG. 2, the flap 2 has a substantially rectangular shape. One end of the flap 2 has a connecting projection 6 and the other end has a connecting recess 8 having a shape complementary to the connecting projection 6. Each of the flaps 2 is formed, and the connecting projection 6 of each flap 2 is fitted into the connecting recess 8 of another adjacent flap 2 so that all the flaps 2 are rotatably connected in the same plane. Have been.

The connecting projection 6 has a neck 6A having a substantially constant width and projecting vertically from substantially the center of the one end of the flap 2, and a substantially semicircular stopper 6B integrally formed at the tip of the neck 6A. A pair of convex sliding surfaces (first sliding surfaces) 6C facing the neck 6A are formed symmetrically on both sides of the neck 6A on the rear surface of the retaining portion 6B. I have. As shown in FIG. 4, the pair of convex sliding surfaces 6 </ b> C are arcs having the same center point O <b> 1.
It is located on the extension of the center line of A. In addition, each convex sliding surface 6
C has a ridge extending in the longitudinal direction.

On the other hand, the connecting concave portion 8 has a substantially T-shape larger than the connecting convex portion 6, and the connecting convex portion 6 is fitted into the connecting concave portion 8 as shown in FIGS. At this time, a pair of concave sliding surfaces 8B are formed so as to slidably contact the convex sliding surface 6C of the retaining portion 6B. Concave sliding surface 8B
Also, a groove having a sectional shape complementary to the ridge of the convex sliding surface 6C is formed in the longitudinal direction, and the ridge and the groove are fitted in a surface contact state as shown in FIG. Thereby, the detachment of the connecting projection 6 from the connecting recess 8 is prevented. Note that the ridges and grooves may be reversed.

The connection recess 8 has a neck 6 of the connection protrusion 6.
A pair of inlet wall surfaces 8A facing A are formed. In the normal use mode, these inlet wall surfaces 8A serve as neck portions 6A.
The shape is set so as not to contact with A. That is,
In both the state where the cutter chain 1 is wound around the sprocket 30 (see FIG. 2) and the state where the cutter chain 1 is cut into the work material and bent inward (see FIG. 3), the inlet wall surface 8A has the neck 6A. Do not touch This is for protecting the thin neck 6A.

The shape is set such that a sufficient gap is opened between the distal end surface of the connecting projection 6 and the abutting surface 8C of the connecting recess 8. As a result, the connecting projection 6 is in a state where the cutter chain 1 is wound around the sprocket 30 (see FIG. 2) and a state where the cutter chain 1 is cut into the work material and bent inward (see FIG. 3). In any case, it does not come into contact with the inner peripheral surface of the coupling recess 8.

As shown in FIG. 2, the inner surface 2A of the flap 2 is an arc surface along a circumferential line connecting the pins 44 when the cutter chain 1 is wound around the sprocket 30, The surface is in contact with 30 chain winding surfaces. Inner circumferential side surface 2 of flap 2
B and 2C are shaped so that they do not come into contact even when the cutter chain 1 is wound around the sprocket 30 (see FIG. 2).

On the other hand, outer side surfaces 2D, 2F of the flap 2
As shown in FIG. 3, when the cutter chain 1 is cut into the work material and bent inward as shown in FIG. 3, the cutter chain 1 comes into surface contact with each other, and regulates the angle so that the cutter chain 1 is not bent any further. The position is regulated by the outer peripheral side surfaces 2D and 2E because both the distance from the rotation center point O1 and the contact area can be secured sufficiently large, and the strength is easily increased. The angle α at which the side surfaces 2D and 2E on the outer peripheral side of the flap 2 come into contact is preferably 2 to 10 °, and more preferably 3 to 7 °. When the angle is within the above-mentioned angle range, even if the cutter chain 1 is bent most inward due to the cutting load, the curvature is appropriately restricted and the progress of cutting is not hindered. If the tension applied to the cutter chain 1 is made sufficiently large, the side surfaces 2D and 2E on the outer peripheral side of the flap 2 do not come into surface contact with each other even when the cutter chain 1 cuts into the work material.

As shown in FIG. 4, a shallow semicircular ring-housing recess 1 is provided on one side of the retaining portion 6B of the connecting projection 6.
0A is formed, and a ring engaging groove 10 having a constant depth is formed over the entire length as shown in FIG. The ring engagement groove 10 is shown in FIG.
As shown in the figure, the flap 2 is located at the center in the thickness direction, and the center of curvature of the bottom surface is the center O of the convex sliding surface 6C.
Matches 1.

On the other hand, the flap 2 is also provided on the side of the connecting recess 8.
A ring receiving recess 12A having a shallow semicircular shape is formed on the side surface of the ring receiving groove, and a ring engaging groove having a constant depth over the entire length is formed at the bottom of the inner peripheral surface of the ring receiving recess 12A, as shown in FIGS. 12 are formed. The ring engaging groove 12 is located at the center in the thickness direction of the flap 2, and the center of curvature of the bottom surface thereof coincides with the center point O2 of the concave sliding surface 8B.
However, a detent projection 24 is formed in the ring engagement groove 12 at a location that intersects with a line connecting the center points O1 and O2, as shown in FIG. This detent projection 24
Has a function of locking an open end of a C-shaped ring 14 described later and preventing rotation of the C-shaped ring 14.

Ring accommodating recess 1 excluding rotation preventing projection 24
The depth and the radius of curvature of 2A are the same as those of the ring receiving recess 10A, and the width and depth of the ring engaging groove 12 are
Same as 0. And the connecting recess 8 of the flap 2
Then, when the connecting projection 6 of the adjacent flap 2 is fitted,
The center point O1 of the connecting projection 6 is the center point O2 of the connecting recess 8
And the bottom surface of the ring engaging groove 10 and the ring engaging groove 12
Are located on the same circumference. Then, a C-shaped ring 14 can be fitted into these ring engaging grooves 10 and 12 as shown in FIGS.

The C-shaped ring 14 is a C-shaped flat member whose outer peripheral edge has a precise circular shape.
4A is formed, and the outer diameter of the C-shaped ring 14 is elastically reduced by pinching and narrowing the operation holes 14A with a tool, so that the C-shaped ring 14 can be attached to and detached from the ring engagement grooves 10, 12. The inner diameter of the ring engaging grooves 10 and 12 is slightly smaller than the outer diameter of the C-shaped ring 14 in a natural state. Therefore, when the C-shaped ring 14 is mounted in the ring engaging grooves 10 and 12, the C-shaped ring 14 The connection protrusion 6 is urged in a direction to be pushed out of the connection recess 8.

Due to this urging force, even when the tension is not applied to the cutter chain 1, the convex sliding surface 6C and the concave sliding surface 8
B, it is difficult to form a gap between the sliding surfaces 6C,
Chips, dust, and dropped abrasive grains are less likely to enter between 8B, and it is possible to prevent damage to the sliding surface and increase in sliding resistance due to the entry. Even if the inner diameters of the ring engaging grooves 10 and 12 are substantially the same as the outer diameter of the C-shaped ring 14 in the natural state, a resistance is generated against the force for reducing the flap connection length, and the same effect is obtained. can get. The ring engagement groove 12
Is longer than the circumferential length of the ring engaging groove 10, the frictional force between the ring engaging groove 12 and the C-shaped ring 14 is larger than the frictional force between the ring engaging groove 10 and the C-shaped ring 14. Beats. From this point, the effect of preventing the rotation of the C-shaped ring 14 can be obtained.

As shown in FIG. 4 and FIG.
May have a pair of positioning holes 22 formed in the center thereof. These positioning holes 22 are used for positioning when machining the flap 2, and also contribute to the weight reduction of the flap 2.

A concave arcuate driving recess 18 is formed on the rear side in the cutter running direction of the end face of the inner peripheral side of the chain of each flap 2, while a front side in the cutter rotation direction on the same end side is formed.
A straight notch 16 is formed. Thus, at the position where the cutter chain 1 is wound around each sprocket 30, the driving recess 18 engages with the individual pins 44 fixed in the grooves of the sprocket 30 as shown in FIG. Prevents the cutter chain 1 from spinning. On the other hand, the notch 16 serves to prevent interference between the pin 44 and the flap 2 in the process of engaging and disengaging the pin 44 from and into the driving concave portion 18 due to the rotation of the cutter.

The end surface 2F of each flap 2 on the outer peripheral side of the chain
At both ends, rectangular parallelepiped abrasive layer chips 4 as cutting blades 4 are fixed by brazing or the like, respectively, and further, convex portions 20 for supporting the trailing edge of each abrasive layer layer chip 4 are formed. The cutting blade 4 can be mechanically detachable from the flap 2. The abrasive layer chip 4 is generally a metal bond abrasive layer formed by compacting and sintering or hot pressing diamond abrasive grains, CBN abrasive grains or a well-known general abrasive grain with a metal binder. ,
Other abrasive layer chip may be used. The width of the abrasive layer chip 4 in the flap thickness direction is slightly larger than the thickness of the flap 2, and is fixed such that the center in the thickness direction coincides with the center in the thickness direction of the flap 2. The number of the cutting blades 4 fixed to the flap 2 may be one or three or more, and a saw blade or various cutting blades may be fixed as the cutting blade 4.

According to the flat chain body and the cutter chain 1 having the above-described configuration, the elastic force of the C-shaped ring 14 pushes the connecting convex portion 6 in the direction of pushing out the connecting concave portion 8. Even when the tension applied to the flaps 2 is reduced, a gap is not easily formed between the sliding surfaces 6C and 8B between the flaps 2, and foreign matters such as cutting chips, dust, and dropped abrasive grains do not easily enter the gap. Therefore, damage to the sliding surfaces 6C and 8B and an increase in sliding resistance can be effectively prevented.

Further, although the connection length of each flap 2 can be reduced and the flaps 2 can be cut off simply by removing the C-shaped ring 14, a ring member required for mounting the C-shaped ring 14 can be obtained. Since the mating grooves 10 and 12 are formed at locations where the connection strength is not affected, and the entire area in the thickness direction of the flap 2 is used as the sliding surfaces 6C and 8B, when the thickness of the flap 2 is small, Also, an ideal connection strength can be obtained. That is, it is possible to achieve both the ease of connection and disconnection of the flap 2 and the connection strength.

Further, when the cutter chain 1 is cut into a work material, the shape of the flap 2 is changed so that the cutter chain 1 is slightly bent inward of the orbital surface, and the cutting blades 4 are cut in an arc. Since the setting is made, it is possible to smoothly start cutting into the work material as compared with the case where the cutter chain 1 does not bend inward. Further, as shown in FIG. 3, the maximum curvature when the cutter chain 1 bends inward is restricted in the entire area of the side surfaces 2D and 2E of the flap 2, so that the strength is smaller than that in the configuration restricted by other parts. Reliability can be improved.

Further, in this embodiment, since the cutting blades 4 which are two abrasive layer chips are fixed to the individual flaps 2 at intervals, the cutting force per unit area of the cutting blades 4 is reduced. In addition, since the chip discharge performance from each cutting blade 4 becomes good, chatter vibration of the cutting blade 4 due to the accumulation of the chip hardly occurs, and the grinding efficiency can be improved.

[Second Embodiment of Cutter Chain] FIG. 1
8 shows a flap 2 used in the second embodiment of the present invention. The difference between the flap 2 and the first embodiment is that a portion corresponding to the ring accommodating concave portion 12A and the ring accommodating concave portion 10A of the first embodiment is cut out from the flap 2 so that the ring engaging grooves 10, 12 are notched. It is at a point formed along the center of the surface. Also in this case, the connecting projection 6
Is accommodated in the coupling recess 8, and C is inserted into the ring engagement grooves 10 and 12.
By fitting the mold ring 14, the respective flaps 2 are irremovably connected, and the same effect as in the first embodiment can be obtained.

It should be noted that the flap connecting jig which can be used in the present invention is not limited to the C-shaped ring 14, and for example,
It is also possible to adopt a structure in which a corrugated ring whose diameter can be easily reduced or a disc made of an elastic body is fitted into the ring engaging grooves 10 and 12, or a connecting jig having no elasticity may be used.

[Embodiment of Cutting Apparatus] Next, an embodiment of a cutting apparatus using the cutter chain 1 will be described with reference to FIGS. First, FIG. 11 shows a sprocket 30 for winding and supporting the cutter chain 1.
An example is shown. Usually, two sprockets 30 are arranged along the same plane, and the cutter chain 1 runs by rotating at least one sprocket. It is also possible to provide three or more sprockets 30 and wind the cutter chain 1.

The sprocket 30 has a disk-shaped shaft portion 32 rotatably supported, pipes 34 fixed radially to the outer peripheral surface of the shaft portion 32, and a circle fixed to the outer peripheral end of each pipe 34. An annular mounting plate 36 is provided, and a pair of side plates 38 are fixed to each other on the outer peripheral surface of the mounting plate 36.

The pipes 34 are made of metal having an elliptical cross section, and are arranged so that the major axis direction is oriented in the circumferential direction of the sprocket 30. As shown in FIGS. 12 to 14, the side plates 38 are in close contact with each other at the inner peripheral ends, but have parallel gaps 30 </ b> A formed at other portions to form the cutter housing grooves 30 </ b> A. The width of the cutter accommodating groove 30A is slightly larger than the thickness of the flap 2 and the depth is set to accommodate all of the flap 2 except for the outer peripheral portion to which the cutting blade 4 is fixed.

The side plates 38 are fixed vertically to the mounting plate 36 by bolts 42, respectively.
As shown in FIG. 14, they are fastened to each other by bolts 46. Further, a columnar pin 44 that engages with the driving concave portion 18 is embedded in a position corresponding to the driving concave portion 18 of the cutter chain 1 stored in the cutter housing groove 30A,
Each is fixed with a bolt 48. The pin 44
May be provided only on the sprocket 30 on the driven side.

Further, as shown in FIG. 11, a rectangular window 40 is formed in the side plate 38 at a position corresponding to the connecting portion of each of the stored flaps 2 to reduce the weight of the side plate 38 and to reduce the weight of the connecting portion. Inspection of the amount of wear can be performed.

According to the sprocket 30 described above, the weight of the sprocket 30 can be remarkably reduced by adopting the above configuration.
Can reduce the total weight. For this reason,
Even when the diameter of the sprocket 30 is, for example, several meters, the rotational inertia force can be reduced, the driving force can be reduced, and fine speed control according to the characteristics of the work material can be easily performed. The time required for an emergency stop in the event of an emergency can be reduced. Further, by employing the elliptical pipe 34, it is possible to reduce the air resistance during rotation.

Next, an example of the entire configuration of a cutting device using the cutter chain 1 and the sprocket 30 is shown in FIG.
5 and FIG. Note that the top, bottom, left, and right used in the following description are based on FIG.

Reference numeral 122 denotes a pair of columns erected on the floor F, and guide rails 124 are vertically fixed to the front surfaces of the columns 122, respectively, as shown in FIG. On the front surface of each guide rail 124, base plates 128 are arranged at the same height, and these base plates 128 are supported so as to be able to move up and down along the guide rails 124.

A recess 126 extending in the vertical direction is formed on the front surface of the guide rail 124, and a screw shaft 130 is disposed in the recess 126 so as to face up and down. Each base plate 128 is attached to the screw shaft 130 via a female screw member 132, respectively. Each pillar 12
A top plate 134 is horizontally hung over the upper end of 2, and the upper end of each screw shaft 130 is connected to a pair of gear boxes 136 fixed on the top plate 134. Each gear box 136 is connected to each other via a horizontal rod 138, and is connected to an elevating motor 140 fixed to a top plate 134. Then, when the elevating motor 140 is operated, each screw shaft 130 rotates in the same direction,
8 moves up and down while maintaining the same height.

One end of a wire 142 is fixed to each base plate 128. The wire 142 is extended upward, wound around a pulley 144 provided above the top plate 134, and has a balance weight 146 at the lower end. Has been fixed. Then, the balance weight 146 and the base plate 12
The balance with the elevating section including 8 is balanced.

A shaft support 148 is arranged on the front surface of the right base plate 128, and a mounting groove formed on the back surface of the shaft support 148 fits into a horizontal guide 150 provided on the front surface of the base plate 128. In this way, it can be displaced in the left-right direction along the guide part 150 and can be fixed at an arbitrary position. A rotating shaft 154 protruding forward is rotatably attached to the shaft support 148, and the above-described sprocket 30 is vertically fixed to the rotating shaft 154. When the outer diameter of the sprocket 30 is not so large, it is possible to replace the sprocket 30 with a conventionally used sprocket.

A rotating shaft 156 is rotatably mounted on the left base plate 128 at the same height as the rotating shaft 154 toward the front. A pulley 158 and a sprocket 30 are coaxially fixed to the rotating shaft 156. I have. As shown in FIG. 1, the cutter chain 1 is wound between the two sprockets 30. A drive motor (cutter drive mechanism) 160 is fixed to the left base plate 128, and a pulley 162 is fixed to a rotation shaft of the motor 160.
A belt 164 is wound between the pulley 162 and the pulley 158, and by driving the drive motor 160, each sprocket 30 rotates and the cutter chain 1 runs.

In order to support the work material, a pair of rails 16 are provided on the floor surface F between the columns 122 in the front-rear direction.
6, 168 are laid thereon, and a carriage 170 is placed on these, so that they can travel along the rails 166, 168. A horizontal work table 172 is provided on the upper surface of the carriage 170.
Has been fixed.

In order to cut a work material with the cutter chain 1 using the above-described cutting device, first, the elevating motor 140 is operated to raise each of the base plates 128 and the cutter chain 1, and then put on the table 172. A work material such as a stone is positioned back and forth. At this time, cutter chain 1
If the tension is insufficient, the shaft support 148 is moved to the right to adjust the tension. When the adjustment is completed, the drive motor 160
, The cutter chain 1 is run, and the lifting / lowering motor 140 is operated to lower the cutter chain 1 at a desired cutting speed, thereby cutting the work material.

According to the cutting device S having the above configuration, since the lightweight sprocket 30 is used, the cutting performance of the cutter chain 1 can be maximized with relatively small power even when the sprocket 30 is huge. Is possible. As the size of the sprocket 30 increases, the rotation angle of the connecting portion between the individual flaps 2 becomes smaller, so that the problem of wear of the flaps 2 can be reduced. For example, the winding diameter of the cutter chain 1 around the sprocket 30 is 2500 mm, and the connection pitch of the flaps 2 (the center point O
Assuming that the distance between 1, O2) is 150 mm, each connecting portion only needs to rotate by 7.5 °, and the amount of abrasion of the sliding surface is coupled with the fact that foreign matter is less likely to enter the sliding surface. Can be extremely small.

Further, according to the cutting device S, since the tension of the cutter chain 1 can be easily adjusted, it is possible to arbitrarily adjust the degree of the inward bending of the cutter chain 1 when the cutter chain 1 is cut into the work material. Also have.

[Second Embodiment of Cutting Apparatus] The cutting apparatus shown in FIGS. 15 and 16 uses one cutter chain 1, but as shown in FIG. A plurality of cutter housing grooves 30A may be formed, and the same cutter chain 1 may be wound around each of the cutter housing grooves 30A. According to such a cutting device, it is possible to cut a plurality of surfaces by one cutting operation, and it is possible to greatly improve work efficiency in a cutting operation of a slab.

Although the embodiments of the present invention have been specifically described above, the flat chain body, the cutter chain, and the cutting device according to the present invention are not limited to only these embodiments, and may be used as needed. Various modifications are possible.
For example, if the cutting blade 4 fixed to the chain body is changed to a saw blade segment, it can be used for cutting wood or the like. Also, when using abrasive layer chips, hard materials other than stone,
It can be used for cutting or dismantling vehicles or structures. Furthermore, as a cutting blade, diamond or CBN
A high-density sintered body, a cemented carbide tip, or an inexpensive high-speed steel cutting blade for a relatively soft work material can also be used.

Further, the flat chain according to the present invention is not only used as a cutter chain, but also exhibits high performance as, for example, a power transmission chain or an article transport chain.

[0053]

As described above, according to the flat chain body, the cutter chain, and the cutting device according to the present invention, even when the tension applied to the flat chain body is reduced, the sliding surface of each flap is reduced. It is difficult for a gap to be formed between the gaps, and foreign matter is unlikely to enter the gap. Therefore, it is possible to effectively prevent damage to the sliding surface and increase in sliding resistance.

Further, since the urging means or the connecting jig can be provided at a place where the connecting strength is not affected, the entire area in the thickness direction of the flap can be used as the sliding surface, and the thickness of the flap can be reduced. Even when the thickness is small, an ideal connection strength can be obtained. That is, it is possible to achieve both the ease of connecting and disconnecting the flap and the connection strength.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a cutter chain according to the present invention.

FIG. 2 is a front view showing a part of the embodiment.

FIG. 3 is a front view showing a part of the embodiment.

FIG. 4 is a front view of the flap.

FIG. 5 is a rear view of the flap.

FIG. 6 is a view taken in the direction of arrow VI in FIG. 4;

FIG. 7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 2;

FIG. 9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is an explanatory view showing a rotation preventing projection of a flap.

FIG. 11 is a front view showing a sprocket of one embodiment of the cutting device according to the present invention.

FIG. 12 is a sectional view of the sprocket.

FIG. 13 is a sectional view of an outer peripheral portion of the sprocket.

FIG. 14 is a sectional view of an outer peripheral portion of the sprocket.

FIG. 15 is a front view showing the entirety of an embodiment of the cutting device according to the present invention.

FIG. 16 is a sectional view taken along line XVI-XVI in FIG. 15;

FIG. 17 is a sectional view of a sprocket of another embodiment of the cutting device according to the present invention.

FIG. 18 is a front view of a flap according to another embodiment of the flat chain body according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cutter chain 2 Flap 4 Cutting blade 6 Connecting convex part 6A Neck part 6B Retaining part 6C Convex sliding surface (first sliding surface) 8 Connecting concave part 8B Concave sliding surface (second sliding surface) 8C Butt surface 10, 12 Ring engagement groove 10A, 12A Ring accommodating concave portion (jig accommodating portion) 14 C-type ring (biasing means, connecting jig) 14A Operation hole 16 Notch 18 Driving concave portion O1, O2 Center point 30 Sprocket 32 Shaft Part 34 Pipe 36 Mounting plate 38 Side plate 44 Pin 140 Cutter lifting / lowering motor (main part of cutting mechanism) 160 Cutter driving motor (main part of cutter driving mechanism)

Claims (8)

[Claims] 1. A flat chain in which a number of flat flaps are connected endlessly on the same plane, and one end of each of the flaps has an arc-shaped first sliding surface. A connecting concave portion having a second sliding surface complementary to the first sliding surface is formed at the other end of the flap, and another flap adjacent to the connecting convex portion is formed. By fitting the first sliding surface and the second sliding surface in a slidable manner.
The flaps are connected to each other so as to be rotatable in the plane, and the flap is configured to press a first sliding surface of the connecting convex portion against a second sliding surface of the connecting concave portion. A flat chain body provided with a biasing means. 2. A jig accommodating portion having a circular or arc shape centered on the center of curvature of the first sliding surface and the second sliding surface is formed on the connecting convex portion and the flap. , The outer periphery of this jig receiving part is circular or arc-shaped,
The flat chain body according to claim 1, wherein each flap is irremovably connected in the thickness direction by fitting a connection jig which is elastically expandable and contractable. 3. A longitudinally extending groove is formed on one of the first sliding surface and the second sliding surface, and a longitudinally extending ridge is formed on the other of the first sliding surface and the second sliding surface. 3. The flat chain body according to claim 1, wherein the flat chain is slidably fitted in the longitudinal direction. 4. A flat chain body comprising a plurality of flat flaps connected endlessly on the same plane, wherein one end of each flap has an arc-shaped first sliding surface. A connecting concave portion having a second sliding surface complementary to the first sliding surface is formed at the other end of the flap, and another flap adjacent to the connecting convex portion is formed. By fitting the first sliding surface and the second sliding surface in a slidable manner.
The respective flaps are connected to each other so as to be rotatable within the plane, and the connection protrusion and the flap are circularly formed around the center of curvature of the first sliding surface and the second sliding surface. Alternatively, an arc-shaped jig accommodating portion is formed, and a connecting jig having a circular or arc-shaped outer periphery is detachably fitted into the jig accommodating portion, so that each flap cannot be detached in the thickness direction. A flat chain body which is connected. 5. The jig accommodating portion is formed on one side surface of the connecting projection and the flap, and is formed as a circular or arc-shaped concave portion as a whole, and is formed on an inner peripheral surface of the concave portion. 5. The flat chain body according to claim 4, further comprising grooves, wherein each of the flaps is irremovably connected in a thickness direction by fitting an outer periphery of the ring into the grooves. 6. A cutter chain, wherein a cutting blade is fixed to each end of the flat chain body according to any one of claims 1 to 5 on the outer peripheral side of the chain of each of the flaps. . 7. A cutting device using the cutter chain according to claim 6, wherein the cutter chain is rotated by rotating the sprocket, and two or more sprockets for rotatably supporting the cutter chain. And a cutting mechanism for moving at least one of the work material and the cutter chain to the other side along the cutter winding surface. 8. The sprocket includes a shaft portion, a number of pipes extending radially from the shaft portion, and an annular cutter chain housing portion fixed to an outer peripheral end of the pipe. The cutting device according to claim 7, wherein a part of an inner peripheral side portion of the cutter chain is fitted into the portion.