JP2008127849A - Traveling rail positioning device for cutter main body of u-shaped groove cutting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traveling rail positioning device for a U-shaped groove cutting apparatus, which is smoothly applicable to the case where a U-shaped groove has only a shallow depth or the U-shaped groove includes a round portion at an intersection between a side wall and a bottom surface thereof (in a secondary product, for instance). <P>SOLUTION: The traveling rail positioning device is formed of a rail (3) arranged in the U-shaped groove (2), a mount (8) having a trapezoidal plan, and a base (4). The mount (8) is formed of a plate-shaped mount body (81), and vertical portions (82) erected upward from both edges of the mount main body (81). The mount body (81) is secured to a lower surface of the rail (3), and the vertical portions (82) are engaged with the mount body (81) along trapezoidal oblique sides of the same. Then a wedge (9) is driven into a gap between each vertical portion (82) and the U-shaped groove side wall (21). The wedge has a wedge angle equal to an angle of the trapezoidal oblique side of the mount body (81). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a positioning device for a cutting machine main body traveling rail of a U-shaped groove cutting device for positioning a cutting machine main body traveling rail for operating a cutting machine main body of the U-shaped groove cutting device at a predetermined position in the U-shaped groove.

A concrete U-shaped groove cutting device has been proposed by the present applicant (see Patent Document 1).
10 and 11 show a side surface and a front surface (elevated surface) of the concrete U-shaped groove cutting apparatus disclosed in Patent Document 1. FIG.

10 and 11, a concrete U-shaped groove cutting device B is provided with a feed driving device 104 for causing the cutting machine main body 102 to travel by the rail 103, and a cutting blade 101 for cutting an upper portion inside the U-shaped groove 100. And a notch driving device 105 for performing.
And even if the U-shaped groove cutting device B made of concrete has different groove width and side wall thickness of the U-shaped groove 100, the upper portion of the side wall can be removed only by replacing the cutting blade 101 without increasing the output of the motor. It is configured so that it can be completely and easily cut, and the height and level of the cutting position of the side wall can be maintained at a predetermined level.

  The feed driving device 104 includes a feed motor 109, a speed reducer 110, and a sprocket 73. The feed motor 109 and the speed reducer 110 are connected by known means, and the rotational speed of the motor 109 is decelerated by the speed reducer 110, and the sprocket 73 is decelerated and rotated by an output shaft (not shown) of the speed reducer 110. Yes.

The speed reducer 110 is installed on the upper surface of the gantry 106 by a known means. Further, a cutting machine body mounting base 120 for mounting the cutting machine body 102 and the cutting drive device 105 is installed on the upper surface of the gantry 106.
A cutting tooth cover pedestal 107, which is a cutting tooth cover mounting base, is connected to the front end (left end in FIG. 10) of the gantry 106 by a known means. From the gantry 106 and the cutting blade cover gantry 107, a plurality of (six in the illustrated example) pedestal legs 111 are fixedly provided vertically downward.

  Specifically, a plurality (six) of the gantry legs 111 are arranged in two rows of three each in the moving direction of the cutting device B, that is, in the flow direction of the U-shaped groove (see FIG. 11). A cylindrical guide roller 108 is rotatably supported at the lower end of the plurality (six) of pedestal legs 111. A wedge-shaped constricted portion 108 a is formed in the middle of the outer periphery of the cylindrical guide roller 108.

  On the other hand, the rail 103 is welded to the left and right side surfaces of the square steel pipe 113 at two ends so that the top of the equilateral chevron 112 faces outward, and the top of the equilateral chevron 112 is wedge-shaped. The constricted portion 108a is arranged to be engaged. A pair of jacks 114 is fixed to the bottom surface of the square steel pipe 113 constituting the rail 103 on the upper surface of the central fixing portion 115 of the jack 114.

  The jack 114 is composed of expansion / contraction portions 116 and 116 that expand / contract in both the left and right directions from the center fixing portion 115 and pressing members 117 and 117 at both ends of the expansion / contraction portions 116 and 116. The right and left pressing portions 117, 117 press the predetermined position in the height direction of the inner side surface 121 of the U-shaped groove 100, and the U-shaped groove 100 of the rail 103 fixed to the jack 114 and the jack 114 is provided. The position in the height direction of the inner side surface (side wall) 121 is determined.

However, when the depth of the U-shaped groove is shallow or when a large R portion exists at the intersection of the side wall and the bottom surface of the U-shaped groove (for example, a secondary product), the pressing member 117 of the jack 114 becomes an obstacle. There was a problem that cutting at the required height was not possible.
JP 2006-192677 A

  In order to solve the above-described problem, the present invention eliminates the U-shaped groove even when the height of the side wall of the U-shaped groove is small or when the R portion is present at the bottom of the side wall as in a secondary product. An object of the present invention is to provide a rail positioning device for a cutting machine main body traveling of a U-shaped groove cutting device capable of cutting an arbitrary height of a side wall.

  The positioning device for the cutting machine main body traveling rail of the U-shaped groove cutting device of the present invention positions the cutting machine main body traveling rail to operate the cutting machine main body of the U-shaped groove cutting device at a predetermined position in the U-shaped groove. In the positioning device of the rail for traveling the cutting machine body of the U-shaped groove cutting device for performing the above, the rail 3 disposed in the U-shaped groove 2, the base 8 having a trapezoidal planar shape for positioning the rail 3, and the rail The cutting machine main body 5 is installed on the base 4 and the cutting machine main body 5 is a notch for making a cut in the upper part of the U-shaped groove 2. A driving device 6 and a feed driving device 7 for causing the cutting machine main body 5 to travel along the rail 3 are configured, and the pedestal 8 is located above the flat pedestal main body 81 and both ends of the pedestal main body 81. The pedestal main body 8 comprises a vertical portion 82 provided toward the Is fixed to the lower surface side of the rail 3, the vertical portion 82 is locked along the trapezoidal oblique side of the pedestal main body 81, and a wedge angle is formed between the vertical portion 82 and the U-shaped groove side wall portion 21. A wedge 9 equal to the angle of the hypotenuse of the trapezoidal shape of the main body 81 is provided.

  According to the present invention having the above-described configuration, the pedestal 8 having a trapezoidal planar shape includes the pedestal main body 81 and the vertical portions 82 at both ends of the pedestal main body 81, and the pedestal main body 81 is fixed to the bottom of the rail 3. The vertical portion 82 is locked along the trapezoidal hypotenuse of the pedestal main body 81, and the wedge angle between the vertical portion 82 and the U-shaped groove side wall 21 is the angle of the trapezoidal hypotenuse of the pedestal main body 81. Is configured to drive a wedge 9 equal to.

  Since only the flat pedestal main body 81 exists below the rail 3, the height of the cutting machine main body 5 can be greatly reduced as compared with the case of using the jack of the prior art even when the side wall is shallow. . Further, even when the R portion is present at the intersection between the side wall portion 21 and the bottom surface 22 of the U-shaped groove such as a secondary product, the end portion in the width direction of the pedestal main body 81 does not ride on the R portion. That is, it can be avoided that the jack supporting the rail in the above-described prior art rides on the R portion and the entire apparatus cannot be installed in the U-shaped groove.

  In addition, since a large device such as a jack of the prior art is not necessary, the size in the width direction of the pedestal main body 81 can be reduced, and a U-shaped groove with a narrow groove width can be cut.

By driving the wedge 9 into a wedge-shaped space between the side wall portion of the U-shaped groove and the vertical portion 83 of the pedestal 8, the pedestal 8 can be firmly fixed in the U-shaped groove 2 without loosening by the wedge effect. .
Since the base 8 is firmly fixed in the U-shaped groove 2, cutting at an arbitrary position on the side wall of the U-shaped groove 2 can be performed accurately.

  First, based on FIG.1 and FIG.2, the whole structure of the positioning device (henceforth a rail positioning device) A of the cutting machine main body travel rail of the U-shaped groove cutting device of this embodiment is demonstrated.

In FIG. 1, the rail positioning device A according to the present embodiment can be arranged in a lower portion in the U-shaped groove 2. It fixes to the lower part vicinity of this by the structure and method mentioned later.
When the rail positioning device A is used when the height H of the side wall of the U-shaped groove 2 as shown in FIG. 3 is low, or when the height h of the cut surface is large, the effect is more exhibited.
Moreover, since the intersection part 23 of the side wall part 21 and the bottom part 22 of the U-shaped groove | channel 2 which is a secondary product manufactured with the formwork in the factory is a curved part with a curvature radius of 50 mm or more normally, U The crossing portion 23 of the groove 2 cannot be used with a wide area such as a pressing portion (see reference numeral 117 in FIG. 11) in a jack (see reference numeral 114 in FIG. 11) of a conventional apparatus.

  The rail positioning device A includes a moving part 1 including a cutting machine body 5, a rail 3 as a guide member of the moving part 1, and a positioning base 8 for fixing the rail 3 to a predetermined position of the U-shaped groove 2. It is configured. In FIG. 2, the positioning base 8 is omitted.

  As shown in FIG. 2, the moving portion 1 includes a gantry 4 that is movable on the rail 3 while being engaged with the rail 3, and a U-shaped groove 2 that is installed on the gantry 4. A cutting machine main body 5 that cuts automatically, and a cutting drive device 6 that is installed on the gantry 4 and that swings the tip of the cutting machine main body 5 to the left and right to form a cut inside the U-shaped groove 2. The feed driving device 7 is installed on the gantry 4 and moves the entire moving part 1 along the rail 3.

  With reference to FIG. 1, the rail 3 includes, for example, a square steel pipe (rail flooring) 31 and a pair of equilateral angle steel (rail body) 32 joined to both side surfaces of the square steel pipe 31 by welding. ing.

  Referring also to FIG. 2, the gantry 4 is formed as a housing, although not clearly shown in the drawing, for mounting the main part of the moving part 1 such as the cutting machine body 5. Below the gantry 4, a plurality of (six in the illustrated example) gantry legs 41 are provided. A guide roller 42 is pivotally supported at the lower end of the gantry leg 41 so as to be rotatable with respect to the gantry leg 41.

  Specifically, as shown in FIG. 1, below the gantry 4, a gantry leg 41 having a guide roller 42 rotatably supported at the tip is provided in the length direction of the U-shaped groove 2 (groove flow direction). A pair of guide rollers 42, 42 arranged in rows and symmetrical in the width direction in the U-shaped grooves 2 in the two rows engage with the triangular apexes of the equilateral angle steel 32 of the rail 3, and the rail 3 is sandwiched between the pair of guide rollers 42, 42.

  Referring to FIG. 2 again, the cutting machine main body 5 includes a disc-shaped cutting blade 51 having a plurality of types of diameters that can be replaced, a cutting blade driving motor 52 that rotationally drives the cutting blade 51, and the drive A speed reducer 53 for reducing the number of revolutions of the motor 52, a rotation direction changer 54 that is connected to the speed reducer 53 at one end and converts the rotation direction of the speed reducer 53 to a right angle, and connected to the other end of the rotation direction changer 54 And a cutting blade column 55 that accommodates the cutting blade shaft.

  The cutting drive device 6 includes a swivel base 61 and a cutting motor 63 provided with a speed reducer 62.

  The feed driving device 7 includes a feed motor 71, a speed reducer 72 that reduces the rotational speed of the motor 71, and a sprocket 73 attached to the output shaft of the speed reducer 72. As will be described in detail with reference to FIG. 6, the sprocket 73 engages with a chain 33 attached to the rail 3 to enable the guide roller 42, that is, the moving portion 1 to move along the rail 3.

  Here, the chain 33 is not endless but is discontinuous, and two end portions of the discontinuous portion are fixed onto the square steel pipe 31 of the rail 3 by the fixture 34.

  As shown in FIG. 4, the positioning pedestal 8 has a flat plate shape with a substantially trapezoidal plan view as viewed from above, two L-shaped members (vertical portions) 82, and two detachable members. And a spacer 83.

  The thickness of the seat body 81 is made of a 10 mm steel plate in the illustrated example, and in FIG. 4, two L-shaped members 82 are fixed to the inclined end portions of the seat body 81 by known means, for example, welding. The inclination angles α of the L-shaped members 82 at the left and right ends of the positioning base 8 with respect to the side wall 21 of the U-shaped groove 2 are symmetrical and have the same angle. Here, the L-shaped member 82 has a thickness that can sufficiently withstand the driving strength of the wedge 9 described later.

  In the vicinity of the central portion of the seat body 81, four bolt holes 84 for fixing to the rail 3 and two anchor bolt holes 86 are formed. Further, nuts 85N for height adjustment and horizontal adjustment are attached to the upper surfaces of the two L-shaped members 82 fixed to the seat body 81, and two L-shaped members are arranged at the center of the nuts 85N. Bolt insertion holes 85 (see FIG. 5) are formed in the 82 and the seat main body 81 so as to penetrate the two L-shaped members 82 and the seat main body 81 simultaneously.

The spacer 83 is a rectangular flat plate and is usually used by being screwed to the L-shaped member 82 with a bolt through a hole (not shown) formed in the vertical portion 82a of the L-shaped member 82. In repairing a place where the narrow U-shaped groove 2 having an inner width of 300 mm or less must be used, the spacer 83 is removed from the vertical portion 82a of the L-shaped member 82 and directly wedged into the vertical portion 82a. It can be changed according to the situation at the work site so that 9 is placed.
For cutting a large U-shaped groove having a groove width of 500 mm to 700 mm, a spacer 83 having a large thickness may be used, or a spacer having a wider positioning pedestal 8 may be used.

Referring to FIGS. 1 and 6, the rail 3 is joined by welding to the positioning base 8 via the spacer S (see FIG. 1) in the vicinity of both ends in the longitudinal direction of the rail 3 (vertical direction in FIG. 6). Is done. Moreover, the rail 3 is connected to a predetermined length by the next rail 3 and a connection tool (not shown) at both ends.
The joining position of the rail 3 and the positioning pedestal 8 is not limited to the vicinity of both ends of the rail 3 and may be joined at the center portion.

  When the rail 3 and the positioning base 8 are connected by bolts instead of welding, the lower surface of the square steel pipe 31 of the rail 3 and the spacer S are connected to the bottom of the base body 81 of the positioning base 8 as shown in FIG. Mounting holes 31b and Sb having the same pitch as the mounting holes 84 provided in the center are provided, and the same number of box wrench insertion holes 31a are provided on the upper surface of the square steel pipe 31 at positions where the mounting holes 31b are projected. The diameter of the box wrench insertion hole 31a is large enough to allow the box wrench head (box) to pass through.

  The use of the anchor bolt hole 86 provided in the base body 81 will be described later.

As shown in FIG. 7, the wedge 9 has an inclined surface 91 and two parallel surfaces 92 and 93.
For the wedge 9, different types such as 6 degrees and 12 degrees are prepared as the angle α formed by the inclined surface 91 and the longer parallel surface 92, and the inclined surface 91 is formed on the L-shaped member 82 of the positioning base 8. While the vertical surface or spacer 83 and the longer parallel surface 92 are in contact with the side wall portion 21 of the U-shaped groove 2, the rail 3 is fixed near the bottom portion 22 of the U-shaped groove 2.

  After the rail 3 fixed on the positioning base 8 is fixed in the vicinity of the bottom wall portion 22 of the U-shaped groove 2 by driving the wedge 9, the moving part 1 of the apparatus A is placed on the rail 3, The portion 24 indicated by the oblique lines in FIG. 3 of the side wall portion 21 is cut by the cutting machine body 5 of the moving portion 1.

When the road surface is sloped or inclined in the width direction and the height of the U-shaped groove 2 changes, as shown in FIG. 8, the height is adjusted to the hole 85 with a nut provided in the positioning base 8. The moving bolt 1 can be smoothly operated by adjusting the height and level of the rail 3 on the spot by screwing the bolt 210 for use.
The length of the threaded portion of the bolt 210 is long enough to adjust the height.

  If the moving part 1 vibrates while cutting the side wall 21 and the rail 3 does not stabilize, an anchor bolt (not shown) is driven into the bottom 22 from the anchor bolt insertion hole 86 of the seat body 81, and the positioning base 8 is moved. It may be fixed.

According to the embodiment of the present invention having the above-described configuration, only the flat pedestal main body 81 exists below the rail 3, so that the position of the cutting blade 51 is compared with the case where the jack of the prior art is used. Is greatly reduced. In particular, even if the wedge 9 is placed immediately above the R portion, the end in the width direction of the pedestal main body 81 rides on the R portion where the side wall portion 21 and the bottom surface 22 of the U-shaped groove intersect. No.
That is, it can be avoided that the jack supporting the rail in the above-described prior art rides on the R portion and the entire apparatus cannot be installed in the U-shaped groove.

  In addition, since a large device such as a jack of the prior art is not necessary, the size in the width direction of the pedestal main body 81 can be reduced, and a U-shaped groove with a narrow groove width can be cut.

By driving the wedge 9 into the wedge-shaped space between the side wall portion of the U-shaped groove and the vertical portion 83 of the positioning pedestal 8, the positioning pedestal 8 is firmly fixed in the U-shaped groove 2 without loosening by the wedge effect. Can do.
Since the positioning base 8 is firmly fixed in the U-shaped groove 2, the upper portion of the U-shaped groove 2 can be accurately cut.

The elevation view of the positioning device of the rail for a cutting machine main part travel of the embodiment of the present invention. The side view corresponding to FIG. Sectional drawing of the U-shaped groove used as the process target of embodiment of this invention. The top view of the positioning base which concerns on embodiment. FIG. 5 is an elevation view corresponding to FIG. 4. The top view of the rail which screwed the positioning base which concerns on embodiment, and contains a chain. The perspective view of the wedge which concerns on embodiment. In this embodiment, the state figure in the case of adjusting the height of a positioning base with a volt | bolt. In this embodiment, the state figure in the case of joining a rail and a positioning base with a volt | bolt. The side view of the conventional U-shaped groove cutting device. FIG. 11 is an elevation view corresponding to FIG. 10.

Explanation of symbols

1 ... Moving part 2 ... U-groove 3 ... Rail 4 ... Fix 5 ... Cutting machine body 6 ... Cutting drive 7 ... Feed Driving device 8 ... Positioning base 9 ... Wedge 21 ... Side wall 22 ... Bottom 31 ... Square steel pipe 32 ... Equilateral angle steel 81 ... Base body 82 ... Vertical part 83 ... Spacer

Claims (1)

  In the positioning device of the cutting machine main body traveling rail of the U-shaped groove cutting device for positioning the cutting machine main body traveling rail for operating the cutting machine main body of the U-shaped groove cutting device at a predetermined position in the U-shaped groove, A rail disposed in the U-shaped groove, a base having a trapezoidal planar shape for positioning the rail, and a pedestal provided so as to be able to run on the rail, a cutting machine body is installed on the pedestal. The cutting machine body is composed of a cutting drive device for making a cut in the upper part of the U-shaped groove, and a feed drive device for running the cutting machine body along the rail, and the base is It consists of a flat pedestal main body and a vertical portion provided upward at both ends of the pedestal main body, the pedestal main body being fixed to the lower surface side of the rail, and the vertical portion along the trapezoidal hypotenuse of the pedestal main body Locked, vertical part and U-shaped groove side wall Positioning device of the cutting machine body traveling rail of the U-shaped groove cutting device the wedge angle, characterized in that it has Da設 equal wedge angles of the trapezoidal-shaped oblique sides of the base body between.

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