JP4100981B2 - Cutting centering device for road surface cutter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutting circle centering device for a road surface cutter.
[0002]
[Prior art]
Conventionally, when replacing a manhole cover provided on a road surface, first, the manhole cover to be constructed is removed, and a disc having a rotation shaft of the same size as the manhole cover prepared in advance is fitted. And used as a centering device.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional example, the construction is troublesome and wasteful, and other measures are desired in order to shorten the construction period.
[0004]
The present invention has been made paying attention to the above points, and it is not necessary to bother to remove the manhole cover that is the object of construction before cutting work, and the road surface that enables shortening of the construction period and work efficiency. An object of the present invention is to provide a cutting circle centering device for a cutter.
[0005]
[Means for Solving the Problems]
The present invention can solve the above problems by providing the following configuration.
[0006]
(1) A cutting circle provided with a support shaft that serves as a fulcrum for the turning motion of the road surface cutter device used when cutting the circumference of the manhole such as electric power, telegraph, gas, water and sewage in a circle along the peripheral edge of the manhole cover. A centering device, wherein the support shaft is provided upright at the center of a disk having a diameter smaller than that of the manhole cover, and can be hooked into a plurality of cutout recesses cut out at the peripheral edge of the manhole cover. part plurality circumferentially to form an arm radially over the disc with the arms cut circular core road cutter, characterized in that it comprises an adjusting unit having at least one stretch-fastening function Ejecting device.
[0007]
(2) In the cutting centering device for a road surface cutter described in (1) above, the adjusting portion having an expansion / contraction / fastening function is a combination of a bolt portion and a nut portion, and the nut portion is provided perpendicular to one end of the arm. The grip portion is fixed, and the bolt portion that is screwed into the nut portion is rotated to adjust the length by sliding the arm, thereby enabling the cutting circle to be centered. A cutting centering device for road cutters.
[0008]
(3) In item (1) cutting the circle centering device road cutter according regulation unit having a stretch-fastening function, via the concluded member to a desired position of the arm to the arm is slidable provided elongated hole, said arm is fixed with the fastening member by a predetermined length slide, cut a circle centering device road cutter, characterized in that it has a configurable cut circle centering.
[0009]
(4) A cutting circle provided with a support shaft that serves as a fulcrum for the turning motion of the road surface cutter device used when cutting the circumference of the manhole such as electric power, telegraph, gas, water and sewerage in a circle along the peripheral edge of the manhole cover. A centering device, wherein the support shaft is provided upright at the center of a disk having a diameter smaller than that of the manhole cover, and a plurality of shafts having screw portions on the peripheral edge of the disk are vertically suspended at a constant pitch. An arm that has a latching portion that can be hooked into a notch recess notched in the peripheral edge of the manhole cover at one end and a hole that can be loosely fitted to swing and turn freely at one end. plurality of turns and setting to form radially on the disc, the disc and to form a link mechanism and said arm, after centering adjustment of the desired angle by turning it off circle the disc, detent locking nut The arm is fixed by screwing the portion with the screw portion of the shaft, and the spindle of the cutting circle is fixed. Cutting circle centering device road cutter, characterized in that a formed.
[0010]
(5) A cutting circle provided with a support shaft that serves as a fulcrum of the turning motion of the road surface cutter device used when cutting around the manhole such as electric power, telegraph, gas, water and sewage in a circle along the peripheral edge of the manhole cover. A centering device, wherein the support shaft is provided upright at the center of a disk having a diameter smaller than that of the manhole cover, and a plurality of arms are provided radially around the periphery of the disk at an equal pitch. The plate is placed on the manhole cover, and the outer periphery of the disk is concentric with the circumference of the manhole cover inside the circumference of the manhole cover, and the spindle of the disk is held at the approximate center position of the manhole cover. and by placing the tip of the arm at the edge near the outer peripheral road manhole cover, and arranged so as to lie inside the position of the cutting circle of the manhole cover the arms and Da設solid Joyokugi It is composed as fixable near the peripheral portion outer peripheral road Cutting circle centering apparatus of the road surface for the cutter to be characterized.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a cutting centering device for a road surface cutter according to the present invention will be described below.
[0012]
1A and 1B are explanatory views when the adjusting portion of the centering device according to the first embodiment is configured by combining a bolt portion and a nut portion, (a) is a plan view, (b) is a partially broken side view, (C) is a partially enlarged side view, FIG. 2 is an explanatory view when the adjusting portion of the centering device according to the second embodiment is configured by combining a long hole and a fastening member, and (a) is a partially enlarged side view. (B) is a perspective view showing the shape of the arm, FIG. 3 is an explanatory view showing an interaction state with the road surface cutter when using the cutting centering device according to the present invention, (a) is a plan view, FIG. 4 is a schematic schematic side view, FIG. 4 is an explanatory view when a link mechanism using a disk and an arm is applied to the adjusting unit of the centering device in the third embodiment, (a) is a plan view, (b) ) Is a partially enlarged side view, and FIG. 5 uses a nail that can be placed on the road surface at a predetermined position of the tip of the arm in the fourth embodiment. FIG. 6 is an explanatory view when the hook portion provided at the tip of the arm is a relatively narrow bowl-shaped member, (a) is a plan view, and (b) is a side view. FIGS. 7A and 7B are explanatory views when the hook portion provided at the tip of the arm is a relatively wide hook-shaped member, FIG. 7A is a plan view, FIG. 7B is a side view, and FIG. An explanatory view at the time of making a latching part provided in the tip of a cylindrical member which has a bowl-like convex part, (a) is a top view and (b) is a side view.
[0013]
Example 1
Embodiment 1 will be described below with reference to the drawings.
[0014]
In manhole cover replacement work, etc., when cutting the circumference of the manhole such as electric power, telegraph, gas, water and sewerage into a circle along the peripheral edge of the manhole cover, the road surface cutter device is turned to make a circular cut However, as a work to be performed first, it is necessary to set a support shaft for turning the cutter device along the cutting circle. In this embodiment, in FIGS. 1 (a), (b) and (c) As shown, the support shaft 1 is provided upright at the center of a disk 3 having a smaller diameter than the manhole cover 2 and can be hooked into a plurality of cutout recesses 4 cut out in the peripheral edge 2a of the manhole cover 2. A plurality of arms 6, 6 ″ having a latching portion 5 are formed in a radial shape on the disk 3, and a plurality of the arms are provided. For example, in the drawing, the arm 6 has an expansion / contraction / fastening function. The adjustment part 8 which has the adjustment part 8 which has and has an expansion-contraction / fastening function The bolt portion 8a and the nut portion 8c are combined, the nut portion 8c is fixed to a grip portion 6a provided perpendicular to one end of the arm 6, and the bolt portion 8a screwed to the nut portion 8c is rotated. Then, the arm 6 is slid to adjust the length so that the cut circle can be centered.
[0015]
The operation will be described below.
[0016]
If the cutout recesses 4 provided on the peripheral edge 2a of the manhole cover 2 to be constructed are, for example, three places, the support shaft 1 is raised at the center of the disk 3 having a smaller diameter than the manhole cover 2. The disc 3 is placed on the manhole cover 2 and the latching portion 5 of the arm 6 is latched according to the position of the notch recess 4. If there is one, the arm 6 ″ without the adjusting portion is hooked first, and then the arm 6 with the adjusting portion 8 is turned to the nut 8c fixed to the gripping portion 6a by turning the head portion 8a of the bolt. Through which the screw part 8a 'rotates and the arm 6 slides along the axial direction from the stepped cylindrical part 8a ", and the length of the arm 6 can be adjusted to center the cutting circle. It is. At this time, the arm 6 can be expanded and contracted by turning the bolt head 8a by the action of the stepped cylindrical portion 8a ″ provided at the tip of the bolt screw portion 8a ′, and when the right screw is screwed, Turning the arm to the right extends the length of the arm 6, and turning it to the left reduces the length of the arm 6 so that the support shaft 1 can be fixed in a tensioned state.
[0017]
(Example 2)
In the second embodiment, as shown in FIGS. 2A and 2B, a long hole 6b 'is slidable through a fastening member 9 at a desired position of the arm 6', and the arm 6 'has a predetermined length. It is configured such that it can be slid and fixed by the fastening member 9 to cut and center.
[0018]
If it demonstrates about an effect | action, like the case of Example 1, the notch recess 4 provided in the peripheral part 2a of the manhole cover 2 used as construction object is three places, for example, and has an adjustment part. If there is one arm 6 'and the other is a fixed arm, the fixed arm is first hooked to the notch recess 4, and then the latching portion 5 of the arm 6' having the adjusting portion is set to the notch recess. 4, grips the gripping portion 6 a ′, slides along the long hole 6 b ′ and sets it to a predetermined length, and a nut 9 b constituting the fastening member 9 is connected via a spring washer 9 c and a washer 9 d. Then, the support shaft 1 can be fixed in a state in which all the arms are in tension. The head 9e of the screw portion 9a may be set as a so-called implanted bolt by setting, for example, a dish-shaped head at a predetermined position of the disk 3 as shown in the figure.
[0019]
(Example 3)
Example 3 will be described below with reference to FIGS. 4 (a) and 4 (b).
[0020]
As shown in FIGS. 4A and 4B, as in the case of the first and second embodiments, the support shaft 1 is provided upright at the center of a disc 3 ′ having a diameter smaller than that of the manhole cover 2, and the circle A plurality of shafts 10a each having a threaded portion are provided upright at the peripheral edge of the plate 3 ', and a hole 7a that is loosely fitted to the shaft 10a so as to be swingable and rotatable is formed at one end and the other end. A plurality of arms 7 having a hooking portion 11 that can be hooked in a notch recess 4 cut out in the peripheral edge portion 2a of the manhole cover 2 are formed radially on the disk 3 ', and The disk 3 'and the arm 7 form a link mechanism, and the disk 3' is rotated by a desired angle to adjust the center of the cut circle, and then the arm 7 is fixed using the detent fixing nut portion 10. The support shaft 1 of the centering device is fixed.
[0021]
In addition, the latching | locking part 11 in Example 3 is made into the cylindrical shape which has a bowl-shaped convex part (refer FIG. 4 (a), (b)), and the notch recessed part notched by the peripheral part 2a of the manhole cover 2 is carried out. 4 is easy to operate as a link mechanism when the disk 3 'is rotated in a state of being hooked on the disk 4, and the shape of the hooking portion 11 is a cylindrical shape having a ridge-like convex portion, so 4 and is prevented from being caught as a rotating part of the link.
[0022]
The operation of the third embodiment will be described. First, as shown in FIG. 4, a cylindrical latching portion 11 having a hook-shaped projection provided at the tip of the arm 7 is hooked on a predetermined notch recess 4. The disk 3 'is turned in the direction of the arrow Y until the arm 7 is in a tensioned state, and then fixed using a detent fixing nut portion (wing nut) 10 to fix the spindle 1 of the cut circle. I can do it.
[0023]
In FIG. 4, attachment / detachment is further facilitated by making the hole 7 a of the arm 7 loosely engaged with the shaft (bolt) 10 a constituting the fastening member into a long hole.
[0024]
Moreover, as shown in FIG.4 (b), the head of the volt | bolt 10a screwed together with the wing nut 10 is made into the shape of a plate, and is set as the implantation bolt.
[0025]
Example 4
Embodiment 4 will be described below with reference to FIG.
[0026]
As in the case of the above-described embodiment, the support shaft 1 is provided upright at the center of the disc 3 ″ having a diameter smaller than that of the manhole cover 2, and a fixing nail 13 is driven on the peripheral road surface in the vicinity of the peripheral edge of the manhole cover 2. This is an example in which a plurality of arms are radially provided at equal pitches on the peripheral edge of the disc 3 ″.
[0027]
The operation of the fourth embodiment will be described.
[0028]
As shown in FIG. 5, the support shaft 1 is provided upright at the center of a disc 3 ″ having a diameter smaller than that of the manhole cover 2, and a plurality of arms 12 are radially arranged at the peripheral edge of the disc 3 ″. The disc 3 ″ is placed on the manhole cover 2, and at this time, the distal ends of the arms 12 that are radially provided are closer to the outer peripheral road surface near the peripheral edge of the manhole cover 2 and the position of the cutting circle. It is arranged so as to be located inside (see FIG. 5), and a supporting nail 13 can be driven to fix the spindle 1 of the cutting circle.
[0029]
Next, the state of interaction with the road surface cutter when using the cutting centering device will be described with reference to FIGS.
[0030]
3A and 3B, when the disc 3 of the cutting centering device is placed on the manhole cover 2, the disc 3, the arms 6, 6 ″ and the wheel provided on the base B of the device. This indicates that there is no interference with the trajectory of r1, r2, r3, r4 when turning, and the cutting circle cut by the cutter blade Cb is not interfered.
[0031]
That is, the cutting centering device for a road surface cutter according to the present invention can perform a road surface cutting operation smoothly and efficiently without any interference during the cutting operation.
[0032]
In the figure, for other reference numerals, 5 is a latching portion provided at the tip of an arm 6, 6 ″ provided around the periphery of the manhole cover 2, and is latched in the notch recess 4 of the manhole cover 2. It is in the state.
[0033]
Further, the number of arms is not limited, and further, the number of arms having the adjusting unit is not limited, and the adjusting units may be provided in all the arms.
[0034]
If there are two notch recesses in the manhole cover, a hole or the like may be provided in advance so as to be engageable with a predetermined position of the disk so that the arm can be reset to a position facing each other at a 180 ° pitch. That is, in the case of the cutting circle centering device of the present invention, the number of manhole cover cutout recesses is determined by pre-determining the positions of the holes so that the number of arms can correspond to two or more. Can be appropriately handled.
[0035]
In this embodiment, the case where the shape of the manhole cover is circular has been described. However, it is needless to say that the present invention can be applied even when the shape of the manhole cover is a polygonal shape such as a quadrangle or an irregular shape.
[0036]
In addition, the material of the disk, arm and other members is generally made of iron, but is not limited as long as the rigidity and strength can be maintained.
[0037]
【The invention's effect】
As described above, according to the present invention, it is not necessary to remove the manhole cover to be constructed before the cutting work, and the cutting core of the road surface cutter can be shortened and the work efficiency can be shortened. A dispensing device can be provided.
[Brief description of the drawings]
FIGS. 1A and 1B are explanatory views when the adjusting unit of the centering device according to the first embodiment is configured by combining a bolt unit and a nut unit, FIG. 1A is a plan view, FIG. 1B is a partially broken side view, FIG. ) Is a partially enlarged side view. FIG. 2 is an explanatory view when the adjusting portion of the centering device in Embodiment 2 is configured by combining a long hole and a fastening member. FIG. 2 (a) is a partially enlarged side view. The perspective view which shows the shape of an arm. [FIG. 3] Explanatory drawing which shows the interaction condition with the cutter for road surfaces at the time of use of the cutting | disconnection centering apparatus based on this invention, (a) is a top view, (b) is typical outline Side view [FIG. 4] Explanatory drawing at the time of applying the link mechanism by a disc and an arm to the adjustment part of the centering apparatus in Example 3, (a) is a top view, (b) is a partial enlarged side view [FIG. A plane showing an example of the configuration when a nail that can be driven on the road surface is used at a predetermined position of the tip of the arm in the fourth embodiment. 6A and 6B are explanatory views when a hook-shaped member provided at the tip of the arm is a relatively narrow hook-shaped member, FIG. 6A is a plan view, and FIG. 7B is a side view. Explanatory drawing when the provided latching part is a relatively wide bowl-shaped member, (a) is a plan view, (b) is a side view. [FIG. 8] The latching part provided at the tip of the arm is bowl-shaped. Explanatory drawing in the case of a cylindrical member having a convex part, (a) is a plan view, (b) is a side view.
DESCRIPTION OF SYMBOLS 1 Support shaft 2 Manhole cover 3 Disc 4 Notch recess 5, 11 Latch part 6, 6 ', 7, 12 Arm 8 Adjustment part 9 Fastening member 10 Nut part for detent fixation (wing nut)

Claims (5)

A cutting circle centering device provided with a support shaft that serves as a fulcrum for the turning motion of a road surface cutter device used when cutting the periphery of a manhole, such as electric power, telegraph, gas, water and sewerage, in a circle along the peripheral edge of the manhole cover The support shaft is provided upright at the center of a disk having a diameter smaller than that of the manhole cover, and has a latching portion that can be latched in a plurality of notch recesses notched in the peripheral edge of the manhole cover. the arms are formed radially on the disc plurality of turns and setting said arm at least one cutting circle centering device road cutter, wherein a comprised comprise adjusting portion having elasticity-fastening function.   2. The cutting centering device for a cutter for a road surface according to claim 1, wherein the adjusting portion having an expansion / contraction / fastening function combines a bolt portion and a nut portion, and the nut portion is provided at a holding portion orthogonal to one end of the arm. A road surface cutter characterized in that it is configured to be capable of centering a cutting circle by adjusting the length by sliding the arm by rotating the bolt portion screwed to the nut portion, and fixing the length. Cutting circle centering device. In the cutting circle centering device road cutter of claim 1, wherein the adjustment portion having a telescoping-fastening function, a long hole provided in a desired portion of the arm to the arm is slidable through the concluded member Te, the arm is fixed by the fastening member by a predetermined length slide, cut a circle centering device road cutter, you characterized in that it has a configurable cut circle centering. A cutting circle centering device provided with a support shaft that serves as a fulcrum for the turning motion of a road surface cutter device used when cutting the periphery of a manhole, such as electric power, telegraph, gas, water and sewerage, in a circle along the peripheral edge of the manhole cover The support shaft is provided upright at the center of a disc having a diameter smaller than that of the manhole cover, and a plurality of shafts having screw portions on the periphery of the disc are suspended at a constant pitch and loosely fitted to the shaft. The disc has an arm that has a latching portion that can be hooked in a notch recess notched in the peripheral edge portion of the manhole cover at one end and a hole that can swing and rotate freely at one end. A plurality of circumferences are formed radially , and a link mechanism is formed by the disk and the arm, and after adjusting the centering of the cut circle by turning the disk at a desired angle, the rotation fixing nut part is A structure in which the arm is fixed by screwing into a screw portion of the shaft and the support shaft of the cutting circle is fixed; Cutting circle centering apparatus of the road surface for the cutter, characterized in that was. A cutting circle centering device provided with a support shaft that serves as a fulcrum for the turning motion of a road surface cutter device used when cutting the periphery of a manhole, such as electric power, telegraph, gas, water and sewerage, in a circle along the peripheral edge of the manhole cover The support shaft is provided upright at the center of a disk having a diameter smaller than that of the manhole cover, and a plurality of arms are radially provided around the periphery of the disk at an equal pitch. Placed on the lid and placed inside the circumference of the manhole lid with the outer circumference of the disc facing the concentric circle with the circumference of the manhole lid and holding the spindle of the disc at the approximate center position of the manhole lid and, at the periphery near the outer peripheral road tip manhole lid of the arm, and also the position of the cutting circle is arranged so as to be located inside the vicinity of the periphery of the manhole cover the arms and Da設solid Joyokugi characterized in that it comprises a fixable to the outer peripheral road Cutting circle centering apparatus of the road surface for the cutter to be.

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