JPH05285933A - Wire saw and cutting device using wire saw - Google Patents

Abstract

PURPOSE:To provide a wire saw and a cutting device of large friction retaining force between a connecting sleeve and wire ropes and without generating an accident of springing out of the connecting sleeve during processing. CONSTITUTION:A channel 10b of a connecting sleeve 15 to be used is formed in the circumferential direction of an inner face in a manner of generating different retaining forces respectively between one end 11a of a wire rope and one end 21a of another wire rope in the press connecting sleeve 15 for connecting wire ropes 11 and 21 and the connecting sleeve 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire saw and a cutting device using the same, and more particularly to a wire saw having high holding power and high safety, and a cutting device using the same.

[0002]

2. Description of the Related Art Generally, a cutting device using a wire saw is often used for cutting concrete structures, thick walls, stones, etc., or cutting ground for constructing a water blocking wall in the ground. There is. In order to make the wire saw endless, or to connect the wire saw unit to the desired length, insert the two ends of the wire rope into the connecting sleeve and crimp it for simplicity. Often, the method of connecting the two ends of the wire rope is adopted.

FIG. 6 is a partial sectional view showing a method of connecting the end portions of a wire rope in a conventional wire saw. The wire saw in this figure has a predetermined length by connecting a plurality of wire saw units with connecting sleeves made of metal, and both ends thereof are connected with connecting sleeves to be endless. As shown in FIG. 6, each wire saw unit 60, 70 is fixed to the wire ropes 61, 71, the resin layers 62, 72 coated thereon, and the outer circumference of the wire rope units 61, 71 at a predetermined interval, and a diamond And rings 64 and 74 to which abrasive materials 63 and 73 are attached. By removing the resin layers 62, 72 on the wire rope both ends 61a, 71a by a predetermined length and inserting the parts into the connection sleeve 65 from both sides thereof, the connection sleeve 65 is caulked. Connected.

[0004]

However, according to such a conventional method, the friction holding force between the connection sleeve 65 and the wire ropes 61 and 71 is small, and there is a risk of slipping off during the working operation. In particular, if the resin layers 62 and 72 are not completely removed, the holding force is significantly reduced. Therefore, the friction holding force between the connecting sleeve and the wire rope depends on the operator, and there are many variations due to the operator, and after connecting, it cannot be judged from the outside and the risk of accident is included. there were.
Further, if the connection sleeve and the wire rope are disengaged from each other during the processing operation and the connection sleeve jumps out, it may be injured, which is extremely dangerous.

The present invention has been made in view of the above circumstances, and has a large friction holding force between the connection sleeve and the wire rope, and a risk of an accident due to a slipping-out of the connection sleeve during a working operation is small. It is an object of the present invention to provide a cutting device using this.

[0006]

The invention according to claim 1 is
In order to solve the above problems, a wire rope having a plurality of rings with abrasives attached to the outer peripheral surface and a connection sleeve are provided, and the connection sleeve is inserted so that one end and the other end of the wire rope are opposed to each other. Thus, the wire saw is formed by connecting one end and the other end of the wire rope, and a connecting sleeve having a groove formed in the inner surface in the circumferential direction is used.

According to a second aspect of the invention, in the wire saw according to the first aspect, the groove formed in the circumferential direction of the inner surface of the connection sleeve is formed in a female screw shape. ..

According to a third aspect of the present invention, in the wire saw according to the first or second aspect, the holding force between one end and the other end of the wire rope in the pressed connection sleeve and the connection sleeve differ from each other. Thus, the groove is formed.

According to a fourth aspect of the present invention, in the wire saw according to the third aspect, the groove is formed only on one side of the inner surface of the connection sleeve with respect to the axial center portion of the connection sleeve. To do.

According to a fifth aspect of the present invention, a wire rope having a plurality of rings with abrasives attached to the outer peripheral surface and a connecting sleeve are provided, and one end and the other end of the wire rope are inserted so as to face each other. A cutting device comprising a wire saw that connects one end and the other end of a wire rope by crimping a connection sleeve, and a driving means for moving the wire saw, wherein the wire saw has a circumference of an inner surface. It is characterized in that a connecting sleeve in which a groove is formed in the direction is used.

[0011]

In the wire saw of the invention according to claim 1,
The groove formed in the circumferential direction on the inner surface of the connection sleeve increases the friction holding force between the connection sleeve and the wire rope after the connection sleeve is crimped and the two ends of the wire rope are connected, and during the working process. Minimize the risk of disconnection.

In the wire saw according to the second aspect of the present invention, the female screw groove formed on the inner surface in the circumferential direction facilitates formation of the groove for increasing the friction holding force between the connecting sleeve and the wire rope. Make it cheap.

In the wire saw according to the third aspect of the invention, the caulked grooves on the inner surface of the connecting sleeve are formed so that the holding forces between the connecting sleeve and one end and the other end of the wire rope are different from each other. ing. Therefore, in the unlikely event that the two ends of the wire rope are disconnected, only the connection between the connection sleeve and the wire rope end on the weaker holding side will come off, and the wire rope end on the stronger holding side will be disconnected. Will be maintained. As a result, the connecting sleeve will not pop out of the wire saw.

In the wire saw of the invention according to claim 4, when the two ends of the wire rope are disconnected, only the connection between the connection sleeve and the end of the wire rope on which the groove is not formed is removed. The connection with the end of the wire rope on the side where the groove is formed will be maintained. A groove formed only on one side of the inner surface of the connection sleeve with respect to the axial center of the connection sleeve makes it very easy to form such a structure.

In the cutting device of the invention according to claim 5,
The groove formed on the inner surface of the connection sleeve in the wire saw increases the friction holding force between the connection sleeve and the wire rope, and reduces the risk of disconnection of the two ends of the wire rope during cutting work. To do.

[0016]

EXAMPLE An example of the wire saw of the present invention and a cutting device using the same will be described in detail below. FIG. 1 is a schematic explanatory view of an embodiment of the wire saw of the present invention. The wire saw shown in this figure has a predetermined length by connecting a plurality of wire saw units with connecting sleeves made of metal, and both ends thereof are connected with connecting sleeves to be endless. 1, the connection is shown. As shown in FIG. 1, each of the wire saw units 1 and 2 includes a wire rope 11 and 21, a resin layer 12 and 22 coated on the wire rope 11 and 22 to prevent breakage of the wire, and an outer circumference. And rings 14 and 24 to which abrasives 13 and 23 made of a diamond sintered body are attached and which are fixed at predetermined intervals. These rings 14, 24 are wire ropes 11,
Diamond sintered abrasives 13, 23 after passing through 21.
Except for the portions, the resin layers 12 and 22 are covered and fixed on the outer periphery at predetermined intervals.

Both ends 11 of each wire rope 11, 21
The resin layers 12 and 22 on a and 21a are removed and exposed for a predetermined length, and after these portions are inserted into the connecting sleeve 15 so as to face each other from both sides, the connecting sleeve 15 is connected by caulking. There is. The resin layer 1
Both ends 11a, 21a of the wire ropes 11, 21 from which 2, 22 are removed are formed to have a length substantially equal to half the length of the connecting sleeve 15.

The connecting sleeve 15 is made of metal such as iron, and as shown in FIG. 2, a hole 15a having an inner diameter into which the wire ropes 11 and 21 can be inserted.
have. A large number of grooves 15b are formed on the inner surface of the connection sleeve 15 in the circumferential direction. This groove 15
b is a wire rope 1 as shown in FIG.
After the both ends 11a, 21a of the wires 1, 21 are inserted into the holes 15a of the connecting sleeve so as to face each other, and when the connecting sleeve 15 is caulked, the connecting sleeve 15 and the wire ropes 11, 21 are separated. It has the function of increasing the friction holding force of and reducing the risk of it coming off during processing.

The groove 15b on the inner surface of the connecting sleeve 15 may have any shape as long as it is formed in the circumferential direction, but if it is formed in a female thread, the groove having the above function can be easily and easily formed. It can be formed at low cost.

Further, the groove 15b is formed in the connecting sleeve 15
It can be provided over the entire length of the inner surface. By doing so, the friction holding force between the connection sleeve 15 and both of the wire ropes 11 and 21 can be increased, and the connection sleeve 15 can be prevented from coming off from either of the wire ropes 11 and 21 during processing. It will be possible.

Further, the groove 15b has, for example, a left half and a right half of the inner surface of the sleeve 15 so that the holding force between the one end 11a and the other end 21a of the wire rope and the connecting sleeve 15 is different from each other. The roughness of the groove can be made different with. With this configuration, if the two ends of the wire rope are disconnected, only the connection between the connection sleeve 15 and the end of the wire rope on the side having a weaker holding force is removed, and the end on the side having a stronger holding force is released. The bond with the end of the wire rope will be maintained. As a result, the connecting sleeve 15 does not jump out of the wire saw, and an accident can be prevented.

In FIG. 2, the groove 15b is formed only in the left half of the inner surface of the connection sleeve 15. That is, this is one end 11a and the other end 21a of the wire rope.
This is the simplest form for forming the groove 15b so that the holding forces between the connection sleeve 15 and the connection sleeve 15 are different from each other. Therefore, by doing so, it becomes possible to extremely easily form a structure having the above function.

Next, a method of manufacturing the wire saw of the present invention will be described. First, as shown in FIG. 3 (A), the wire saws 1 and 2 were set so that the resin layers 12 and 22 remained at a predetermined length (half the length of the connecting sleeve) W or more from the ends. After that, the resin layers 12 and 2 having the predetermined length W are formed.
2 is removed and the wire ropes 11 and 21 are exposed at the ends. At this time, as described above, if the resin layer remains, the holding power decreases, so it is desirable to remove it as completely as possible. After that, as shown in FIG. 1, these wire rope ends 11 a and 21 a are connected to the holes 1 of the connection sleeve 15.
Insert into 5a from both sides.

Next, the connecting sleeve 15 with both wire rope ends 11a and 21a inserted in this way is set in the caulking device 40 and caulking as shown in FIG. First, as shown in FIG. 4 (A), the connecting sleeve 15 is crimped in one direction, and then the connecting sleeve 15 is rotated by about 90 degrees as shown in FIG. 4 (B). And crimp again. In order to obtain sufficient holding power, it is preferable to repeat the crimping process 3 to 4 times. In this way, the wire rope ends 11a and 21a and the connection sleeve 15 are completely connected.

With respect to dozens of grooved connecting sleeves and conventional grooveless connecting sleeves used in the present invention (10 mm outer diameter, 20 mm total length, 10 g iron sleeve), an outer diameter of 8 mm and a total length of 24 mm When the caulking process was repeated several times until it became, the holding force when using a sleeve with no groove formed on the inner surface was 200 to
While it was 400 kg, the holding force was 50 when using the sleeve with grooves as shown in FIG.
It was confirmed that the increase was as large as 0 to 800 kg.

Next, one embodiment of a cutting device using the above wire saw will be described in detail. FIG. 5 shows an embodiment of a groove cutting device for forming a cutting groove in the ground in order to form a continuous underground wall, a water blocking wall, etc. in the ground. The groove cutting device 50 is roughly composed of a main body and a guide device. The main body includes an endless wire saw 51 to which a plurality of rings 14 and 24 with abrasives (diamond sintered bodies) for cutting the ground G are attached at predetermined intervals, and a drive means 52 for causing the wire saw 51 to run endlessly. It is equipped with. As the driving unit 52, a high-frequency motor or the like that is most suitable for carrying out the present invention can be used.

As shown in FIG. 1, the wire saw 51 has one end 11a of the wire rope and the other end 2 thereof.
By pressing the connection sleeve 15 into which 1a is inserted, one end and the other end of the wire rope are connected to form an endless shape. A groove 15b is formed on the inner surface of the connection sleeve 15 for connecting the wire rope in the circumferential direction, which increases the friction holding force between the connection sleeve 15 and the wire rope, which may cause detachment during cutting work. Is small. Further, the groove 15b is
It is formed such that the holding forces between the connecting sleeve and one end and the other end of the wire rope in the pressed connecting sleeve 15 differ from each other. Therefore,
Even if the two ends of the wire rope are disconnected during groove cutting work, only the connection between the connection sleeve and the end of the wire rope on the side with weaker holding force is removed, and the wire rope on the side with stronger holding force is released. The bond with the ends will be maintained. As a result, the connecting sleeve 15 does not jump out of the wire saw 51, and accidents during cutting work can be prevented.

The guide device includes two guide pulleys 54 provided above the preceding holes 53 located near the driving means 52, and two winding pulleys installed one near each of the two preceding holes 53. A hanging electric device 55, a bottom guide pulley 56 installed at the bottom of each of the two leading holes 53, and two endless ropes stretched between the winding electric device 55 and the bottom guide pulley 56. 5
7, two pulley boxes 58 fixedly attached to a part of the two endless ropes 57, and two guide H steels 59 for vertically guiding the two pulley boxes 58, respectively. Is. The winding electric device 55 and the bottom guide pulley 56 are provided so that the surface orthogonal to the axial direction thereof coincides with the surface surrounded by the wire saw 51.

Each of the pulley boxes 58 is a hollow box having a substantially rectangular outer shape in a plan view and a substantially rectangular shape in a front view. Inside thereof, there are two support shafts 58b that support the moving pulley 58a in two stages, upper and lower.
There is one on each of these two support shafts 58b,
The two moving pulleys 58a are arranged so as not to overlap each other in a plan view. Further, rollers are provided on the outer edge surface. The other pulley boxes 58 have almost the same configuration except that the position of the moving pulley 58a is different.

The guide H steel 59 is provided with a guide groove of the pulley box 58 so that the openings of the two flanges face each other and extend in the longitudinal direction. The guide groove is formed by fixing two tongue pieces, which are substantially L-shaped on the surface orthogonal to the longitudinal direction, to the flange at the other end so that one end surfaces of the L-shape face each other. Both ends of the endless rope 57 are fixed to a pulley box 58, and the endless rope 57 and the pulley box 58 form an endless shape.

Next, the operation of the wire saw 51 will be described. In FIG. 5, the wire saw 51 is rotated, the drive means 52 is moved in the direction of arrow A, and the winding electric device 55 is driven to drive the endless rope 5
When 7 is rotated in the direction of arrow C, the pulley box 5
As the wire 8 descends, the wire saw 51 cuts the ground G to form the thin groove M. Driving means 5 in the direction of arrow B
When 2 is moved and the endless rope 57 is rotated in the direction of arrow D, the pulley box 58 rises.

Next, a method of constructing the water blocking wall will be described. First, two preceding holes 53 are constructed in the ground G at positions corresponding to both ends of the water blocking wall to be constructed. The preceding hole 53 is cut using a ground auger or the like suitable for carrying out the present invention while pouring bentonite muddy water,
After the guide H steel 59 is built in the preceding hole 53, the groove cutting device 50 is installed.

Then, the groove cutting device 50 is driven to cut the ground G to form thin grooves M. After the cutting is completed, the pulley box 58 is raised. The cutting wire is completely dropped into the preceding hole 53 and discharged by the rising wire saw 51. Then, part of the bentonite muddy water is drained from the bottom, and the self-hardening liquid is injected from the upper part of the preceding hole 53.

Then, the driving means 52 is restarted, the wire saw 51 is rotated and lowered, and after reaching the bottom, the bent saw muddy water and the self-hardening liquid are mixed and stirred to thin the self-hardening material. Make sure to cover the entire groove M. After that, the guide H steel 59 is pulled up and removed. If the self-hardening material is hardened, a water blocking wall will be constructed.

In the above embodiments, only the groove cutting device for forming a cutting groove in the ground was mentioned as the cutting device, but in addition, the demolition of concrete structures such as subways, buildings, highways, bridges and dams. Alternatively, it can be used for various cutting devices for repair, cutting or cutting thick walls, stones, and the like.

[0036]

As is apparent from the above description, according to the wire saw of the invention according to claim 1, since the groove is formed in the circumferential direction of the inner surface of the connecting sleeve, the connecting sleeve is caulked. After the two ends of are connected, the friction holding force between the connection sleeve and the wire rope is increased, which can reduce the risk of the connection sleeve and the wire rope being disconnected during the working operation.

According to the wire saw of the second aspect of the invention, since the female screw groove is formed in the circumferential direction of the inner surface, the groove for increasing the friction holding force between the connection sleeve and the wire rope is formed. It can be formed easily and inexpensively.

According to the wire saw of the third aspect of the present invention, the caulked groove on the inner surface of the connecting sleeve causes a difference in holding force between the connecting sleeve and one end and the other end of the wire rope. Is formed in. Therefore, if the two ends of the wire rope are disconnected, the connection between the connection sleeve and the wire rope end on the weaker holding side will be lost, and the wire rope end on the stronger holding side will be lost. The bond with will be maintained. As a result, the connecting sleeve does not jump out of the wire saw, and accidents can be prevented.

According to the wire saw of the invention of claim 4, when the two ends of the wire rope are disconnected, only the connection between the connection sleeve and the end of the wire rope where the groove is not formed is connected. It will come off and the connection with the end of the wire rope on the side where the groove is formed will be maintained. With respect to the axial center part of the connection sleeve, the structure is such that only a groove is formed on one side of the inner surface of the connection sleeve.
A wire saw with the above functions is extremely easy and
It can be manufactured at low cost.

According to the cutting device of the invention of claim 5,
The groove formed on the inner surface of the connection sleeve in the wire saw increases the friction holding force between the connection sleeve and the wire rope, and reduces the risk of disconnection of the two ends of the wire rope during cutting work. can do.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of an embodiment of a wire saw of the present invention.

FIG. 2 is a cross-sectional view showing an example of a connection sleeve.

FIG. 3 is a process cross-sectional view for explaining the method of joining the wire saw of the present invention.

FIG. 4 is a process cross-sectional view for explaining a caulking method for a connection sleeve in the wire saw of the present invention.

FIG. 5 is a schematic explanatory view of an embodiment of a cutting device of the present invention.

FIG. 6 is a cross-sectional view of a connecting sleeve portion in a conventional wire saw.

[Explanation of symbols]

 1 Wire Saw Unit 2 Wire Saw Unit 11 Wire Rope 11a End 12 Resin Layer 13 Abrasive Material 14 Ring 15 Connection Sleeve 15a Hole 15b Groove 21 Wire Rope 21a End 22 Resin Layer 23 Abrasive Material 24 Ring 50 Groove Cutting Device 51 Wire Saw 52 Drive Means 55 Winding Electric Device 57 Endless Rope G Ground M Thin Groove

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Yoichi Miyamoto 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Tsutomu Takubo, 2-80 Hohokita-cho, Sakai-shi, Osaka Osaka Diamond Industrial Co., Ltd. (72) Inventor Shuichiro Koroku 2-80 Hotorikitacho, Sakai City, Osaka Prefecture In Osaka Diamond Industrial Co., Ltd.

Claims (5)

[Claims] 1. A wire rope having a plurality of rings having abrasives attached to an outer peripheral surface thereof and a connection sleeve, wherein the connection sleeve is inserted such that one end and the other end of the wire rope are opposed to each other. A wire saw that connects one end and the other end of the wire rope by
A wire saw using a connecting sleeve having a groove formed in the inner surface in the circumferential direction. 2. The wire saw according to claim 1, wherein the groove formed on the inner surface of the connection sleeve in the circumferential direction has a female thread shape. 3. The groove is formed so that a holding force between one end and the other end of the wire rope in the crimped connection sleeve and the connection sleeve is different from each other. Alternatively, the wire saw according to item 2. 4. The wire saw according to claim 3, wherein the groove is formed only on one side of an inner surface of the connection sleeve with respect to an axial center portion of the connection sleeve. 5. A wire rope, comprising: a wire rope having a plurality of rings having abrasives attached to the outer peripheral surface thereof; and a connecting sleeve, wherein the connecting sleeve into which one end and the other end of the wire rope are inserted is caulked. A cutting device comprising a wire saw connecting one end and the other end, and a drive means for running the wire saw, wherein the wire saw has a connection sleeve in which a groove is formed in a circumferential direction of an inner surface. A cutting device characterized by being used.