JP4321979B2 - Branch construction equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
More particularly, the present invention relates to a configuration of an apparatus used for forming an opening when a new pipe line is connected to an existing pipe.
[0002]
[Prior art]
When constructing a branch pipe from an existing pipe, a branch opening is formed in the pipe that forms the existing pipe, and a relay member such as a branch saddle is attached to the branch opening to connect the branch pipe. It is used a lot.
Conventionally, when a branch opening is formed in an existing pipe line, a drilling clamp member equipped with a saddle for attaching a drilling device is mounted at a position corresponding to the branch pipe take-out position on the peripheral surface of the existing pipe line. A drilling device is installed on the machine.
The existing pipeline is buried at a considerably deep position from the ground in order to prevent damage due to the impact from the ground. For this reason, when the branch opening is formed, the opening is often formed on the upper surface of the existing pipeline for the purpose of reducing the excavation range for forming the opening.
FIG. 4 is a diagram showing a conventional branch opening construction state, in which a perforation apparatus B is installed on the upper peripheral surface side of the existing pipe line A, and an opening is formed.
[0003]
On the other hand, the burial depth of the existing pipeline A may vary depending on the environment of the burial position, and may be buried at a relatively shallow position.
In such a case, when an opening is formed in the upper peripheral surface of the existing pipe A by the method shown in FIG. 4, the branch pipe connected to the opening is located near the ground surface, and is easily subjected to an impact from the ground surface. In addition, it may cause damage during road construction. For this reason, the branch pipe is taken out in the lateral direction on the peripheral surface of the existing pipeline A.
FIG. 5 shows this case. In FIG. 5, a space for a worker D to enter and perform work separately from the resisting C that exposes the existing pipeline in the vicinity of the buried position of the existing pipeline A is shown. A resister E is provided, and an opening is formed by installing the perforating apparatus B from the side with respect to the existing pipeline A.
[0004]
[Problems to be solved by the invention]
In the working method as shown in FIG. 5, by forming an opening for taking out the branch pipe in the horizontal direction from the existing pipe A, as shown in FIG. 6, in the depth from the ground surface to the take-out position of the branch pipe P. The depth H2 in the horizontal extraction (the state shown on the right side in FIG. 6) may be deeper than the depth H1 in the vertical extraction (the state shown on the left side in FIG. 6). (H2−H1 = H), and it can be made less susceptible to the impact from the ground, and the possibility of damage due to other construction can be avoided.
However, when taking out in the horizontal direction, it is necessary to increase the size of the resisting E formed adjacent to the existing pipe line A in order to improve work efficiency. As a result, the time required for excavation work and backfilling work is increased. The increase in work man-hours leads to an increase in work costs. In particular, when the excavation range near the existing pipe line is widened when horizontal removal must be performed at a position where the embedding depth becomes shallow, if the compaction at the time of backfilling is insufficient, Compared to the case where the excavation range is narrow, the adverse effects of impact from the ground surface are likely to occur.
Further, if the working resistance E is increased at the time of taking out in the horizontal direction, if there is an embedded pipe or the like at an adjacent position, there is a risk of damaging the embedded pipe.
[0005]
An object of the present invention is to improve workability without causing an increase in work cost in view of the problem in forming an opening for taking out a branch pipe in the horizontal direction that can deepen the buried position from the ground surface. It is providing the branch part construction apparatus provided with the structure.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is a bifurcation construction device for forming a bifurcation portion on a horizontal circumferential surface of an existing pipeline, and a base installed on a side of the existing pipeline, and the base Power transmission that is slidable in the horizontal direction, and that can convert the driving force from the drive source installed in the vertical direction to the horizontal direction and transmit it to the blade facing the horizontal circumferential surface of the existing pipe line A sliding body having a conversion part and a swinging operation part which is provided so as to be swingable in the vertical direction with respect to the base and located at the extreme end on the swinging end side and on the way to the extreme end It said sliding member and an operating member capable of abutting sliding drive portion is provided, the power transmitting and converting slide toward the sliding body in the existing pipe by swinging the operating member while driving the blade that is provided on part above it is allowed to proceed toward a horizontal peripheral surface of the existing pipe line It is characterized in that to allow drilling the sides of the existing pipes in the horizontal direction.
[0007]
According to a second aspect of the present invention, a bevel gear meshing in a right angle direction is provided in the power transmission conversion portion of the sliding body, a drive source is provided in a gear having a rotation axis in the vertical direction, and a rotation shaft in the horizontal direction. The gear is characterized in that a cutting tool such as a drill is connected to the gear.
[0008]
According to a third aspect of the invention, the uppermost end of the oscillating end side of the operating member is constituted by a foot pedal, the sliding drive portion located way to the outermost end, the swinging of the operating member in conjunction with a can press drive the sliding body, it is characterized in that the sliding body by the foot pedal is depressed and can slide toward the horizontal peripheral surface of the existing pipeline.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating a usage state of a branching section construction apparatus 1 according to an example according to an embodiment of the present invention. In FIG. 1, an initial state before an operation member described later is operated is illustrated.
In the same figure, the branch part construction apparatus 1 includes a base 2 that is installed on the side of an existing pipe line (for convenience, reference numeral A shown in FIG. 5 is used).
The base 2 is a bottom plate 2A installed on the bottom surface of a working support (indicated by a symbol H for convenience) excavated at a depth at which the horizontal circumferential surface of the existing pipeline A is exposed in the vicinity of the existing pipeline A. And a box-shaped sliding guide portion 2B which is open downward is integrated with the upper surface of the bottom plate 2A.
Although not shown in detail in the top plate 2B1 of the sliding guide portion 2B, a guide groove having a longitudinal direction in the horizontal direction that is parallel to the radial direction of the existing pipe line A is provided. Bolt 3 is fitted.
The bolt 3 is penetrated and fastened to the bottom surface of the sliding body 4 that is slidably provided on the upper surface of the base 2 and functions as a sliding guide member when the sliding body 4 moves in the horizontal direction. It is like that.
[0010]
The sliding body 4 is configured by a housing that is placed on the upper surface of the sliding guide portion 2B in the base 2 and is slidable in the horizontal direction, and a power transmission conversion portion 5 is provided therein. The power transmission conversion unit 5 includes bevel gears 6 and 7 that can be engaged with each other at right angles by rotating shafts 6A and 7A supported on the top plate of the sliding body 4 and the side plate located on the side facing the existing pipe line A, respectively. A drive source such as an electric motor (a member denoted by reference numeral S in FIG. 1 ) is attached to the rotary shaft 6A that is extended in the vertical direction, and the existing pipe is attached to the rotary shaft 7A that is extended in the horizontal direction. A blade (not shown) such as a drill having an outer diameter corresponding to the diameter of the branch opening to be drilled is attached to face the horizontal circumferential surface of the road.
[0011]
A support shaft S1 is inserted and supported on the base 2, and a coil spring SP is hooked between the support shaft S1 and a locking piece 4A protruding downward from the lower surface of the sliding body 4. .
Further, the base end portion of the operation member 8 is integrated with the support shaft S1.
The operation member 8 is supported so as to be able to swing in the vertical direction with the support shaft S1 as a fulcrum, and is provided with a foot pedal 8A as a swing operation portion capable of placing a foot on the extreme end on the swing end side. In the middle from the base end where the support shaft S1 is located to the endmost portion, a sliding drive portion 8B capable of contacting the side surface of the sliding body 4 is provided.
The coil spring SP has a habit of moving the sliding body 4 toward the support shaft S1. For this reason, the sliding body 4 is shown in FIG. 1 by the habit of the coil spring SP that is hooked on the locking piece 4A. As shown in FIG. 1, the operation member 8 is rotated clockwise by pushing the sliding drive unit 8B that is in contact with the side surface in accordance with this movement. 8A is flipped up.
[0012]
Since the present embodiment is configured as described above, the branching portion construction apparatus 1 in the state shown in FIG. 1 is installed on the bottom surface of the resisting H formed near the side of the existing pipeline A. At this time, the bottom plate 2A of the base 2 may be fixed to the bottom surface of the resisting H by an anchor bolt (not shown).
A drive source and a cutter are mounted on each of the vertical and horizontal rotation shafts 6A and 7A in the power transmission conversion unit 5 mounted on the sliding body 4, and the foot pedal 8A of the operation member 8 is pushed in.
[0013]
When the foot pedal 8A of the operating member 8 is depressed, the operating member 8 is turned downward in the vertical direction against the behavior of the coil spring SP, that is, rotated clockwise in FIG. 1, resulting in the state shown in FIG.
The state shown in FIG. 2 is a state in which the operating member 8 is fully depressed, and in the process of reaching this state, the sliding body 4 is pressed by the sliding drive unit 8B and slides toward the existing pipe line A side.
When the sliding body 4 slides toward the existing pipeline A, the driving force from the drive source in the power transmission conversion unit 5 can be transmitted to the blade, so that the branch opening can be drilled in the existing pipeline by the blade. it can. In addition, since the feed amount for drilling is increased according to the swing stroke of the operation member 8, the foot pedal 8 </ b> A may be depressed until the blade penetrates the peripheral wall of the existing pipe line A.
[0014]
When the drilling operation for the existing pipe A is completed, the operation member 8 returns to the state shown in FIG. 1 due to the behavior of the coil spring SP by releasing the stepping with the foot pedal 8A. The blade is returned to the state shown in FIG. 1 by sliding in the direction in which the blade is extracted from the existing pipeline A due to the custom of SP.
[0015]
FIG. 3 is a diagram showing the work after drilling. In FIG. 3A, the chips 9 remaining in the existing pipe A after drilling are removed by the magnet 9 and then shown in FIG. In this manner, the stopper 10 is attached to the saddle. In the operation shown in FIG. 3, the bag 11 is used to block the branch opening and the outside air.
[0016]
According to the embodiment as described above, the drive source attached to the vertical rotation shaft 6A in the power transmission conversion unit 5 does not need to perform the feeding operation required for cutting the blade, so that the drive source is used as in the prior art. It is possible to eliminate the labor of pushing the blade into the peripheral wall of the existing pipeline A. Thereby, it becomes possible to reduce a labor burden at the time of a drilling operation. In particular, since the operation for feeding the blade needs only to operate the foot pedal 8A of the operation member 8 that can utilize the moment, it is possible to reduce the labor burden required for the feeding operation.
[0017]
Further, according to the present embodiment, the foot pedal 8A of the operation member 8 only has to be stepped in the direction of swinging in the vertical direction. As a result, it is not necessary to lie down on the drive source, and it can be completed only slightly beyond the installation space of the base 2.
[0018]
【The invention's effect】
According to the first and third aspects of the present invention, the blade mounted on the power transmission conversion unit can be provided by sliding the sliding body provided on the base and slidable by the swinging operation of the operation member. It can be slid toward the horizontal circumferential surface of the road. As a result, the blade that forms the branch opening can advance to the horizontal circumferential surface of the existing pipe line by the swinging operation of the operation member in the vertical direction (vertical direction), so that the work space in the horizontal direction for advancing the blade Can be reduced. As a result, it is possible to reduce the resistance to excavating as a work space and to reduce the cost of road construction restoration.
[0019]
According to the second aspect of the present invention, the sliding body can be mounted in any manner by attaching the drive source to the vertical rotating shaft and the blade to the horizontal rotating shaft of the bevel gear provided on the sliding body. Even when the position is displaced, the driving force can be transmitted. As a result, the driving force from the driving source can be used as power for forming the opening of the existing pipe line regardless of the feed displacement of the sliding body. Therefore, the existing pipe line is utilized by using a small space in the horizontal direction. A branch opening to the horizontal circumferential surface can be formed.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a branch construction apparatus according to an example according to an embodiment of the present invention.
FIG. 2 is a view showing an aspect of a branching section construction apparatus shown in FIG.
FIG. 3 is a view for explaining processing after the formation of a branch opening by the branch portion construction apparatus shown in FIG. 1;
FIG. 4 is a diagram showing a state in which a branch opening is constructed on a vertical circumferential surface of an existing pipe line. FIG. 5 is a diagram showing a state in which a branch opening is constructed on a horizontal circumferential surface of the existing pipe line.
6 is a diagram for explaining the advantage of the branch opening construction shown in FIG. 5. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Branch part construction apparatus 2 Base 4 Slide body 5 Power transmission conversion part 6 Gear 6A which makes one side of bevel gear 7 Vertical rotation shaft 7 Gear 7A which makes the other side of bevel gear 7 Horizontal rotation shaft 8 Operation member 8A Oscillation Foot pedal 8B as operation part Sliding drive part A Existing pipe line S1 Spindle SP Coil spring

Claims (3)

A bifurcation construction device for forming a bifurcation on the circumferential surface of an existing pipeline,
A base installed on the side of the existing pipeline;
It is slidable in the horizontal direction with respect to the base, converts the driving force from the driving source installed in the vertical direction to the horizontal direction and transmits it to the blade facing the horizontal circumferential surface of the existing pipe line A sliding body having a possible power transmission conversion unit;
It is provided so as to be able to swing in the vertical direction with respect to the base, and a swing operation portion located at the extreme end on the swing end side is provided and can be brought into contact with the sliding body on the way to the extreme end An operation member provided with a sliding drive unit ,
By swinging the operation member, the sliding body is slid toward the existing pipe and is driven toward the horizontal circumferential surface of the existing pipe line while driving the blade equipped in the power transmission conversion unit. bifurcation construction apparatus being characterized in that to allow drilling the sides of the existing pipe in the horizontal direction Te.   2. The branch part construction apparatus according to claim 1, wherein the power transmission conversion unit included in the sliding body is provided with a bevel gear meshing at a right angle, a gear having a rotation shaft in a vertical direction has a drive source in a horizontal direction. A branch construction apparatus, wherein a cutting tool such as a drill is connected to a gear having a rotating shaft. In the branch unit construction system according to claim 1 or 2, wherein the outermost end of the oscillating end side of the operating member is constituted by a foot pedal, the sliding drive portion located way to the outermost end, the in conjunction with the swinging of the operating member is capable of pressing drive the sliding body, that the sliding body by the foot pedal is depressed and can slide toward the horizontal peripheral surface of the existing pipe line Characteristic branching section construction equipment.

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