JPH0929522A - Drilling machine for liquid pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the liquid from entering along a spindle by using a one-way clutch provided with locking pieces as a rotation transmitting mechanism. SOLUTION: The outer shape of a spindle 13 can be circular by using a one-way clutch provided with a large number of locking pieces 39 as a rotation transmitting mechanism 16. When a ring-shaped sealing member is provided on the outer circumference of the spindle 13 as sealing means 43, 44 to seal the space between the housing 17 and the spindle 13, the friction resistance generated between the outer circumferential surface of the spindle 13 and the ring-shaped sealing member when the spindle 13 is moved in the axial direction is made constant, the space between the housing 17 and the spindle 13 is sealed, and the liquid is easily prevented by the sealing means 43, 44 from entering along the spindle 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a perforator for a liquid flow pipe for perforating a side face of a liquid flow pipe such as a water pipe while the liquid is flowing through the liquid flow pipe.

[0002]

2. Description of the Related Art As shown in FIGS. 4 to 7, a liquid flow pipe 1 such as a water pipe is clamped by a clamp means 2 to a liquid stopper 3 such as a water stopper.
Is attached, the perforator 4 for the liquid flow pipe is connected to the tip of the separator 3, and the drill 5 of the perforator 4 is passed through the valve hole 6a provided in the ball valve body 6 of the separator 3. The liquid flow pipe 1 to the liquid flow pipe 1 side, and the liquid flow pipe 1 is perforated with a drill 5. After the perforation, the drill 5 is retracted to rotate the ball valve element 6 of the liquid separating plug 3 to eject from the liquid flow pipe 1. There has been proposed a construction method in which the liquid distribution pipe 1 is provided with a liquid separating portion in the work procedure of stopping the liquid to be discharged.

In this case, the separating valve 3 has a ball valve body 6 rotatably accommodated in a spherical valve chamber 7, and the ball valve body 6 is rotatable.
Is provided with a valve hole 6a across the center thereof, and the ball valve body 6 is provided with a handle 8 in a direction orthogonal to the valve hole 6a.
Attached to the outside of the valve chamber 7 in a liquid-tight manner, and the valve chamber 7 has a hole 9 having the same size as the valve hole 6a on the surface facing the liquid flow pipe 1 and the surface on the opposite side. 10 is provided, and a liquid separating hole (not shown) is provided in the valve chamber 7 at a position orthogonal to a line connecting the holes 9 and 10.
The O-ring 11 is provided on the surface of the valve chamber 7 opposed to the.

The separating plug 3 is attached to the liquid flow pipe 1 by the clamp means 2 with the hole 9 facing the planned drilling position of the liquid flow pipe 1.

A conventional liquid flow pipe punching machine 4 used in such a construction method has a spindle 13 in a cylindrical case 12.
Is supported rotatably about its axis and movably in the axial direction by a moving operation, and at the base of the case 12, there is provided a moving operation section 14 for moving the spindle 13 in the axial direction. A rotation transmission mechanism 16 for transmitting a rotational force from a rotation driving means 15 such as a motor is coupled to the spindle 13, a housing 17 for housing the rotation transmission mechanism 16 is provided at the tip of the case 12, and a housing 17 is provided at the tip of the housing 17. Is connected to an adapter 18 for connecting to the liquid separating plug 3 attached to the liquid flow pipe 1, the adapter 18 is provided with a liquid discharge hole 19, and the spindle 13
A drill 5 that penetrates through the valve hole 6a of the liquid separating plug 3 and pierces the liquid flow pipe 1 is connected to the tip of the.

A moving operation portion 14 for moving the spindle 13 in the axial direction is provided with a screw accommodating hole 20 in the spindle 13 from the base side thereof, and a feed screw 21 is rotatably inserted into the screw accommodating hole 20. A feed nut 22 is screwed onto the feed screw 21 extending outside the spindle 13, the spindle 13 is rotatably connected to the feed nut 22 via a bearing 23, and a key 24 is attached to the feed nut 22. The case 12 has a structure in which a key groove 25 for sliding the key 24 is provided in the case 12, and a handle 26 is attached to the base end of the feed screw 21 outside the case 12.

In the moving operation section 14 as described above, when the feed screw 21 is rotated by the handle 26, its rotational movement is converted into a linear movement by the feed nut 22, the key 24 and the key groove 25, and the feed nut 22 is rotated. The linear movement of the spindle 13 causes the spindle 13 to move linearly in the axial direction.

The rotation transmission mechanism 16 for transmitting the rotational force from the rotation driving means 15 to the spindle 13 is composed of the rotation driving means 15
Of the output shaft 27 of the gears 28, 29, 30, 31
Is transmitted to the sleeve 32 via the sleeve 32 and is transmitted to the spindle 13 via the sleeve 32. The spindle 13 and the sleeve 32 are moved from the sleeve 32 to the spindle 13 while allowing the axial movement of the spindle 13.
In order to transmit the rotational force to the spindle 13, the outer shape of the spindle 13 is formed in a quadrangle as shown in FIG. 7, and the spindle 13 is slidably fitted in the square hole 33 of the sleeve 32.

A connecting nut 34 for connecting the adapter 18 is rotatably supported at the tip of the housing 17,
The connecting nut 34 is provided with a handle 35 for turning the connecting nut 34 when the adapter 18 is connected.

A ring-shaped sealing material 36 for sealing between the sleeve 32 and the housing 17 is provided on the outer periphery of the sleeve 32, and a seal between the spindle 13 and the sleeve 32 is provided on the outer periphery of the spindle 13. A ring-shaped sealing material 37 is provided.

In such a conventional perforator for liquid flow pipe 4, as shown in FIGS. 5 and 6, prior to the work,
The liquid separation pipe 3 is attached to the liquid flow pipe 1 by the clamp means 2 with the hole 9 facing the planned hole of the liquid flow pipe 1.

Next, as shown in FIG. 5, the perforator 4 for the liquid flow pipe is connected to the hole 10 side of the liquid separating plug 3 via the adapter 18, and the valve hole 6a of the ball valve body 6 has the valve chamber 7 formed therein. Holes 9, 10
The handle 26 of the movement operation unit 14
To move the spindle 13 forward in the longitudinal direction,
The forward movement of the spindle 13 causes the drill 5 at the tip thereof to pass through the valve hole 6a of the ball valve body 6 of the liquid separating plug 3 and the liquid flow pipe 1
Move to the side. In this state, the rotational force of the rotation driving means 15 is transmitted to the spindle 13 via the rotation transmission mechanism 16 to rotate the drill 5, and the forward movement and rotation of the drill 5 punches the liquid flow pipe 1. When the liquid flow pipe 1 is perforated, the liquid flowing through the liquid flow pipe 1 is ejected from the perforated portion into the separator 3 and is discharged from the liquid discharge hole 19 of the adapter 18. At this time, the cutting powder at the time of perforation is also removed together with the ejected liquid. Therefore, chips do not enter the liquid flow pipe 1.

When drilling is completed, the drill 5 is attached to the adapter 18
The ball valve body 6 of the separator 3 is rotated to stop the liquid ejected from the liquid distribution pipe 1, and the perforator 4 for the liquid distribution pipe is removed from the separator 3.

[0014]

However, in the conventional drilling machine 4 for a liquid flow pipe, the spindle 32 is moved from the sleeve 32 while allowing the spindle 13 to move in the axial direction.
In order to transmit the rotational force to the spindle 3, the outer shape of the spindle 13 is formed in a square shape as shown in FIG. 7, so that when the spindle 13 is moved in the axial direction, the outer peripheral surface of the spindle 13 and The frictional resistance with the ring-shaped sealing material 37 provided on the outer peripheral surface of the spindle 13 is not uniform, so that the sealing material 37 is easily deformed by the movement of the spindle 13 in the axial direction.
There is a problem that the seal between the sleeve 32 and the sleeve 32 is damaged.

If the seal between the spindle 13 and the sleeve 32 is not sufficient, the liquid may enter from between the spindle 13 and the sleeve 32 at the time of punching, causing the machine to be rusted.

It is an object of the present invention to provide a perforator for a liquid flow pipe which can easily prevent the liquid from entering along the spindle.

Another object of the present invention is to provide a perforator for a liquid flow pipe provided with a rotation transmission mechanism capable of transmitting the rotational force from the rotation driving means to a spindle having a circular outer shape and moving in the axial direction. It is in.

[0018]

SUMMARY OF THE INVENTION According to the present invention, a spindle is supported in a case so as to be rotatable about its axis and axially movable by a moving operation, and the spindle is attached to the base of the case. A moving operation part for moving in a direction, a rotation transmission mechanism for transmitting a rotation force from a rotation driving means to the spindle is coupled to the spindle, and a housing for housing the rotation transmission mechanism is provided at a tip of the case. The object of the improvement is a drilling machine for a liquid flow pipe in which a drill for drilling a liquid flow pipe is connected to the tip of the spindle.

In the punching machine for a liquid flow pipe according to the present invention, at least the portion of the spindle passing through the rotation transmission mechanism and the housing is formed in a circular outer shape, and the rotation transmission mechanism rotates the rotation drive means. A clutch case that is rotated by being applied with a force, and is arranged in rows in the clutch case at predetermined intervals in the circumferential direction, and is rotated in the circumferential direction by the centrifugal force when the clutch case rotates, and both ends thereof are rotated. A one-way clutch having a cam surface meshing with an inner surface of the clutch case and an outer surface of the spindle to transmit a rotational force of the clutch case to the spindle and allowing the spindle to move in the axial direction. Is used, and a sealing means is provided between the housing and the spindle.

By using the one-way clutch having a large number of locking pieces as a rotation transmission mechanism, the outer shape of the spindle can be made circular. For this reason,
As a sealing means for sealing between the housing and the spindle, when a ring-shaped seal material is provided on the outer periphery of the spindle, when the spindle is moved in the axial direction, it is between the outer peripheral surface of the spindle and the ring-shaped seal material. The generated frictional resistance becomes uniform, the seal material is not deformed even when the spindle moves in the axial direction, the integrity of the seal between the housing and the spindle is achieved, and the infiltration of liquid along the spindle is prevented by the sealing means. It can be easily prevented.

Further, according to the one-way clutch having a large number of locking pieces, the rotational force from the rotation driving means can be surely transmitted to the spindle moving in the axial direction.

According to the present invention, the spindle is supported in the case so as to be rotatable about its axis and axially movable by a moving operation, and the spindle is axially moved to the base of the case. A movement operation unit is provided, a rotation transmission mechanism for transmitting a rotational force from a rotation driving means is coupled to the spindle, and a housing for housing the rotation transmission mechanism is provided at a tip of the case. An adapter for connecting to a liquid separation stopper attached to a liquid flow pipe is connected to the tip of the, a liquid discharge hole is provided in the adapter, and a valve hole of the liquid separation stopper is provided at the tip of the spindle. An object of improvement is a drilling machine for a liquid flow pipe, which is connected to a drill that passes through and drills the liquid flow pipe.

In the liquid flow pipe punching machine according to the present invention, at least the portion of the spindle passing through the rotation transmission mechanism and the housing is formed in a circular outer shape, and the rotation transmission mechanism rotates the rotation drive means. A clutch case that is rotated by being applied with a force, and is arranged in rows in the clutch case at predetermined intervals in the circumferential direction, and is rotated in the circumferential direction by the centrifugal force when the clutch case rotates, and both ends thereof are rotated. A one-way clutch that has a plurality of locking pieces that engage the inner surface of the clutch case and the outer surface of the spindle to transmit the rotational force of the clutch case to the spindle, and allow the spindle to move in the axial direction. Is used, and a sealing means is provided between the housing and the spindle.

When the one-way clutch having a large number of locking pieces is used as the rotation transmission mechanism, the outer shape of the spindle can be made circular. Therefore, when a ring-shaped sealing material is provided on the outer circumference of the spindle as a sealing means for sealing between the housing and the spindle, the outer peripheral surface of the spindle and the ring-shaped sealing material are moved when the spindle is moved in the axial direction. The frictional resistance generated between the two is uniform, the seal material is not deformed even when the spindle moves in the axial direction, and the integrity of the seal between the housing and the spindle is ensured, and therefore the liquid along the spindle is Intrusion can be easily prevented by the sealing means.

Further, according to the one-way clutch provided with a large number of locking pieces, the rotational force from the rotation driving means can be surely transmitted to the spindle moving in the axial direction.

Since an adapter for connecting to the liquid separating plug attached to the liquid flow pipe is provided at the tip of the housing, it is easy to change the adapter when the size of the liquid separating plug is changed. Can be dealt with.

The one-way clutch in each of the above-described liquid flow pipe punches may have a structure in which a plurality of rows of locking pieces are arranged in the longitudinal direction of the spindle.

With this arrangement, the rotational force can be more reliably transmitted to the spindle having a circular outer shape without causing slippage.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION FIGS. 1 to 3 show an example of an embodiment of a perforator for a liquid flow pipe according to the present invention. In addition, the same code | symbol is attached | subjected and shown to the part corresponding to FIGS. 4-7 mentioned above.

In the drilling machine for a liquid flow pipe of this embodiment, the spindle 13 is formed in a circular outer shape, preferably a perfect circular shape.

Further, in this example, the rotation transmission mechanism 16
Is a clutch case 38 that is rotated by the rotational force of the rotation driving means 15 provided by the gear 31, and is arranged in a row at a predetermined interval in the circumferential direction within the clutch case 38 so that the clutch case 38 rotates. The cam surfaces 39a and 39b at both ends thereof are engaged with the inner surface of the clutch case 38 and the outer surface of the spindle 13 by the centrifugal force of the centrifugal force, and the rotational force of the clutch case 38 is transmitted to the spindle 13. And a one-way clutch having a locking piece 39 is used.

The one cam surface 39b of the locking piece 39 and the outer surface of the spindle 13 are engaged with each other by surface contact, whereby the locking piece 39 and the spindle 13 are engaged.
When the spindle 13 is moved in the axial direction while the rotation of the clutch case 38 is transmitted to the spindle 13, the outer surface of the spindle 13 slides on the cam surface 39b of the locking piece 39, The spindle 13 is allowed to move in the axial direction.

In this one-way clutch, two piece holding rings 40a and 40b are coaxially arranged between a clutch case 38 having a circular inner surface to which a gear 31 is integrally attached on the outer periphery and a spindle 13 having a circular outer surface. Are arranged in a fixed shape and are fixed to the clutch case 38, and the piece retaining rings 40a, 40b are provided with piece fitting windows 41a, 41b corresponding to each other inside and outside at regular intervals in the circumferential direction. Locking pieces 39 made of high carbon chrome steel are rotatably fitted in the circumferential direction of the clutch case 38 within a predetermined range, and the adjacent locking pieces 39 are urged by a ribbon spring 42 to rotate in the engaging direction. Has been done. In this example, the locking pieces 39 are arranged in two rows in the longitudinal direction of the spindle 13.

Sealing means 43 and 44 are provided between the inner surface of the front end and the inner surface of the rear end of the housing 17 and the spindle 13. A ring-shaped sealing material is used as the sealing means 43 and 44, and is provided on the outer peripheral surface of the spindle 13. 45 is a needle bearing.

Other configurations are shown in FIGS. 4 to 6 as a conventional example.
The structure is the same as that shown in FIG. 5, and as in the case shown in FIG. 5, the perforation work is performed by connecting the perforator 4 for the liquid flow pipe to the hole 10 side of the separator 3 via the adapter 18.

In this case, when the rotational force of the rotation driving means 15 is transmitted to the clutch case 38 by the rotation transmission mechanism 16 and the clutch case 38 is rotationally driven in the forward direction shown by the arrow in FIG. Each locking piece 39 is erected by force, one of the cam surfaces 39a, 39b at both ends of each locking piece 39 meshes with the inner surface of the clutch case 38, and the cam surface 39b forms the outer surface of the spindle 13. , The rotational force of the clutch case 38 is transmitted to the spindle 13, and the spindle 13 is rotationally driven. In particular, if two rows of the locking pieces 39 are provided side by side in the longitudinal direction of the spindle 13, even greater torque can be transmitted.

As described above, the one cam surface 39b of the locking piece 39 and the outer surface of the spindle 13 are engaged with each other by surface contact, whereby the locking piece 3 is engaged.
9 and the spindle 13 mesh with each other, and the clutch case 38
When the spindle 13 moves in the axial direction when the rotation of the spindle 13 is transmitted to the spindle 13, the outer surface of the spindle 13 slides on the cam surface 39b of the locking piece 39 to move the spindle 13 in the axial direction. Since the movement is allowed, the spindle 13 is moved in the axial direction by operating the handle 26 of the movement operation unit 14 in a state where the rotation is transmitted to the spindle 13 by the rotation transmission mechanism 16. be able to.

Therefore, as described in the conventional example, the rotational force of the rotation driving means 15 is transmitted to the spindle 13 via the rotation transmission mechanism 16 to rotate the drill 5, and the handle 26 of the movement operation section 14 is rotated. By moving the drill 5 forward through the spindle 13 by operation, the liquid circulation pipe 1 is drilled by the drill 5.

When the clutch case 38 is driven to rotate in the opposite direction shown by the arrow in FIG. 3, the standing state of each locking piece 39 becomes insufficient, and the cam surfaces 39 at both ends of each locking piece 39.
a and 39b are the inner surface of the clutch case 38 and the spindle 1.
The force that meshes with the outer surface of 3 is significantly reduced, and the rotational force of the clutch case 38 is not transmitted to the spindle 13,
The clutch case 38 idles.

The outer shape of the spindle 13 can be made circular by using a one-way clutch having a large number of locking pieces 39 as in the drilling machine for a liquid flow pipe of this embodiment as the rotation transmission mechanism 16.

Therefore, the housing 17 and the spindle 1
When a ring-shaped sealing material is provided on the outer circumference of the spindle 13 as the sealing means 43 and 44 for sealing between the three,
When the spindle 13 is moved in the axial direction, the frictional resistance generated between the outer peripheral surface of the spindle 13 and the ring-shaped sealing material becomes uniform, and the sealing material does not deform even when the spindle 13 moves in the axial direction. The integrity of the seal between the housing 17 and the spindle 13 can be achieved, and the intrusion of liquid along the spindle 13 can be easily prevented by the sealing means.

Further, according to the one-way clutch provided with a large number of locking pieces 39, the torque is equally divided in the circumferential direction, and the rotational force from the rotation driving means 15 is surely transmitted to the spindle 13 moving in the axial direction. be able to. Also, the locking piece 3
If a structure in which a plurality of rows of 9 are arranged side by side in the longitudinal direction of the spindle 13, the rotational force can be more reliably transmitted to the spindle 13 having a circular outer shape without causing slippage.

In the above embodiment, the outer shape of the spindle 13 is formed in a circular shape over substantially the entire length, but the present invention is not limited to this, and the spindle 13 is not limited to this.
At least, the outer shape of the portion of the spindle 13 that passes through the rotation transmission mechanism 16 and the housing 17 may be formed in a circular shape.

[0044]

According to the punching machine for a liquid flow pipe of the present invention,
Since the one-way clutch equipped with a large number of locking pieces is used as the rotation transmission mechanism, the outer shape of the spindle can be made circular. Therefore, when a ring-shaped sealing material is provided on the outer circumference of the spindle as a sealing means for sealing between the housing and the spindle, the outer peripheral surface of the spindle and the ring-shaped sealing material are moved when the spindle is moved in the axial direction. The frictional resistance generated between the two is uniform, the seal material is not deformed even when the spindle moves in the axial direction, the integrity of the seal between the housing and the spindle is achieved, and the infiltration of liquid along the spindle can be achieved. It can be easily prevented by the sealing means.

Further, according to the one-way clutch having a large number of locking pieces, the rotational force from the rotation driving means can be surely transmitted to the spindle moving in the axial direction.

Further, if a plurality of rows of the locking pieces are provided in the longitudinal direction of the spindle, the rotational force can be transmitted to the spindle having a circular outer shape more reliably without causing slippage.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an example of an embodiment of a perforator for a liquid flow pipe according to the present invention.

FIG. 2 is a cross-sectional view showing a state during transmission of rotational force of a one-way clutch used in the liquid flow pipe punching machine of FIG.

FIG. 3 is a transverse cross-sectional view showing a state of the one-way clutch used in the liquid flow pipe punching machine of FIG. 1 when idling.

FIG. 4 is a vertical cross-sectional view of a conventional liquid flow pipe punch.

FIG. 5 is a vertical cross-sectional view showing a state before starting a punching operation with a conventional liquid flow pipe punching machine.

FIG. 6 is a transverse cross-sectional view showing a state in which a liquid separation pipe is attached to a liquid flow pipe by a clamp means.

FIG. 7 is a cross-sectional view showing a combined state of a spindle and a sleeve in a conventional liquid flow pipe punch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid flow pipe 2 Clamping means 3 Separation plug 4 Drilling machine for liquid flow pipe 5 Drill 6 Ball valve body 6a Valve hole 7 Valve chamber 8 Handle 9, 10 hole 11 0 Ring 12 Case 13 Spindle 14 Movement operation part 15 Rotation drive means 16 Rotation Transmission Mechanism 17 Housing 18 Adapter 19 Liquid Discharge Hole 20 Screw Storage Hole 21 Feed Screw 22 Feed Nut 23 Bearing 24 Key 25 Key Groove 26 Handle 27 Output Shaft 28, 29, 30, 31 Gear 32 Sleeve 33 Square Hole 34 Connection Nut 35 Handle 36, 37 Sealing Material 38 Clutch Case 39 Locking Piece 40a, 40b Piece Holding Ring 41a, 41b Piece Fitting Window 42 Ribbon Spring 43, 44 Sealing Means 45 Needle Bearing

Claims (3)

[Claims] 1. A spindle is rotatably supported in a case so as to be rotatable about its axis and axially movable by a moving operation, and a moving operation section for moving the spindle in the axial direction is provided at a base portion of the case. A rotation transmission mechanism for transmitting the rotational force from the rotation driving means is coupled to the spindle, the housing for housing the rotation transmission mechanism is provided at the tip of the case, and the tip of the spindle is provided at the tip of the spindle. In a liquid flow pipe drilling machine in which a drill for drilling a liquid flow pipe is connected, at least the portion of the spindle passing through the rotation transmission mechanism and the housing is formed in a circular outer shape, and the rotation transmission mechanism is A clutch case, which is rotated by the rotational force of the rotation driving means, and a row are formed in the clutch case at predetermined intervals in the circumferential direction. The clutch case is rotated in the circumferential direction by the centrifugal force when the clutch case rotates, and the cam surfaces at both ends thereof are engaged with the inner surface of the clutch case and the outer surface of the spindle so that the rotational force of the clutch case is generated. A one-way clutch that includes a large number of locking pieces for transmitting to the spindle and that allows the spindle to move in the axial direction is used, and a sealing means is provided between the housing and the spindle. Drilling machine for liquid distribution pipes. 2. A spindle is rotatably supported in the case so as to be rotatable about its axis and axially movable by a moving operation, and a moving operation portion for moving the spindle in the axial direction is provided at a base portion of the case. A rotation transmission mechanism for transmitting a rotation force from a rotation driving means to the spindle is coupled to the spindle, a housing for accommodating the rotation transmission mechanism is provided at a tip of the case, and a tip of the housing is provided at a tip of the housing. An adapter for connecting to a separator plug attached to the liquid flow pipe is connected, the adapter is provided with a liquid discharge hole, and the tip of the spindle passes through a valve hole of the separator plug to form the liquid. In a liquid flow pipe drilling machine in which a drill for drilling a flow pipe is connected, at least a portion of the spindle passing through the rotation transmission mechanism and the housing is The outer shape is formed in a circular shape, and the rotation transmission mechanism includes a clutch case that is rotated by the rotational force of the rotation driving means, and is arranged in a row at a predetermined interval in the circumferential direction in the clutch case. The clutch case is rotated in the circumferential direction by the centrifugal force when the clutch case rotates, and the cam surfaces at both ends thereof are engaged with the inner surface of the clutch case and the outer surface of the spindle to transmit the torque of the clutch case to the spindle. And a sealing means is provided between the housing and the spindle, and a one-way clutch that allows the spindle to move in the axial direction is used. . 3. The punching machine for a liquid flow pipe according to claim 1, wherein the one-way clutch has a structure in which a plurality of rows of the locking pieces are arranged in a row in the longitudinal direction of the spindle.