JPH0737729B2 - Horizontal hole punching device on the side of the vertical hole - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lateral hole drilling device for a lateral surface of a vertical hole such as a manhole in which a lateral hole is drilled.

(Prior Art) For example, in a gas station or the like, a liquid level detected by a float or the like is converted into an electric signal in order to input an amount of fuel oil or the like stored in an underground tank into a monitor device and manage inventory, A system has been adopted in which this signal is wirelessly transmitted to a monitor device in an office located away from the underground tank.

By the way, in adopting such a wireless liquid level signal transmission system, an iron manhole is buried right above an underground tank, and a liquid level gauge and an electric signal converter are installed in the manhole. Since it is necessary to install the antenna connected to the electric signal converter outside the manhole, to install this antenna, make a hole in the side wall of the manhole, while chipping the outside of the manhole where this hole is provided. There is a problem that a construction is required in which a groove is provided, the antenna is pulled out from the hole provided in the manhole, the antenna is positioned in the groove, and then the groove is backfilled.

(Problems to be Solved by the Invention) The present invention has been made in view of such a problem, and an object thereof is to easily form a lateral hole such as the antenna installation hole described above on a side surface of a vertical hole. It is to provide a new device that can be installed.

(Means for Solving the Problem) That is, the present invention is, as a horizontal hole punching device on the side surface of a vertical hole for achieving the above problem, a machine frame main body to which a drive motor is attached, and a horizontal direction of the machine frame main body. Of the guide body that is supported so that it can be moved, and a support body that is horizontally supported by the guide body and that carries an adapter shaft for mounting a core pit for lateral hole drilling so that it can be dug to the machine frame side. When,
Adjusting means provided on a part of the supporting body and adjusting a descending position of the supporting body by contacting a part of the guiding body, a fixing means for fixing the supporting body to the guiding body, and a horizontal guide body. The manual operation means is provided on the machine frame main body to move in the direction, and the spline shaft extends through the guide machine body to reach the support machine body to transmit the rotation of the drive motor to the adapter shaft.

(Operation) With this configuration, the machine frame main body is positioned in the vicinity of the vertical hole, the guide body is horizontally moved above the vertical hole, and then the adjusting means touches a part of the guide body. If the support machine is lowered until it comes into contact, it can be accurately positioned and held in the horizontal hole drilling device in the vertical hole, and at this position the guide machine can be moved toward the machine frame body by the manual operation means. By rotating the lateral hole excavation while rotating the lateral hole, the lateral hole can be accurately and easily formed at a required position in the vertical hole.

(Example) Then, the Example illustrated below is described.

FIGS. 1 and 2 show an embodiment of the present invention configured as a device for forming an antenna installation hole on the side surface of a manhole. This device is roughly classified into a machine frame main body 10 and one of them. It is configured by a drilling unit 20 mounted on the side so as to be horizontally and vertically movable, and a drive unit 50 for horizontally moving the drilling unit 20 and driving the adapter shaft 40.

The machine frame main body 10 is formed in a housing shape by a vertical frame 11 and a horizontal frame 12, and a handle 14 is fixed to the upper part on the back side and a caster 15 is fixed to the lower end sideways. Is constructed so that it can be carried at an angle, and further, screws 17 for horizontal adjustment are provided at four corners of the lower end of the machine frame main body 10 via brackets 16 ...

On the other hand, the drilling unit 20 is guided by the guide case 21 fixed to the end of a guide shaft 51 that is slidable in the lateral direction with respect to the machine frame body 10, and is vertically moved by being guided by the guide case 21. It is configured by an adapter case 35 that is attached so that it is possible, and an adapter shaft 40 that is supported by the adapter case 35 and has a core bit 43 attached to the tip thereof. The guide case 21 fixed to the end of the guide shaft 51 through the bearing plate 22.
Has four vertical and horizontal guide rods 26 ... Penetrating vertically through the upper plate 23 and the lower plate 24, and one spline shaft 27 is rotatable in the center of these guide rods. Has been inserted into.

These guide rods 26, ..., The upper end is fixed to the bearing plate 30, the lower end is fixed to the upper plate 36 of the adapter case 35, and the bearing plate 30 has a handle 31 at the upper end for positioning the adapter case. Since the screw rod 32 is screwed and the lower end of the positioning screw rod 32 is brought into contact with the upper surface plate 23 of the guide case 21, the adapter case 35 is positioned and held at the horizontal hole drilling position H in the manhole M. Is configured.

Reference numeral 33 in the drawing denotes a screw rod for fixing the adapter case which penetrates the upper surface plate 23 of the guide case 21 in the surface direction. As shown in FIG. 4, the tip of the screw rod 33 is located on one side of the upper part of the guide case 21. It is screwed to a movable guide rod tightening plate 25 provided along with, and by tightening this screw rod 33, the guide rod 26 is clamped and fixed between the upper plate 23 and the tightening plate 25, and the adapter case 35 is fixed. It is constructed so that it can be held by the pulled-up position and the lateral hole punching device.

On the other hand, in the adapter case 35 fixed to the lower ends of the guide rods 26, 26, an adapter shaft 40 having an adapter 41 fixed to the tip through a bearing hole 37 provided in the side surface is laterally supported. The fixed bevel gear 42 is configured to mesh with the bevel gear 28 at the tip of the spline shaft 27 that penetrates the upper surface plate 36 to obtain a rotational driving force. The adapter shaft 40 is formed as a hollow shaft as shown in FIG. 3, and one end thereof communicates with a through hole 39 provided in a bearing 38 in the adapter case 35 and is supplied through a water pipe 44. The cooling water cools the inside of the cylindrical diamond core bit 43 attached to the adapter 41 and discharges the cut material to the outside.

On the other hand, the driving unit 50 for driving the horizontal movement of the drilling unit 20 and the adapter shaft 40 is the manual drilling unit 20.
And a drive mechanism for driving the adapter shaft 40 by a motor.

Integrated guide shaft 5 as a component of the horizontal movement mechanism
The bearing plates 1 and 51 are axially slidably supported by bearings 52 and 52 fixed to both sides of the lower surface of the support plate 8 of the machine frame main body 10, and one end of which is fixed to the guide case 21.
22 and the other end is fixed to a common bearing plate 53.

On the other hand, these bearing plates 22 and 53 are installed in parallel with the guide shaft 51.
A book screw shaft 54 is pivotally supported, and a gear 56 supported by a bearing 55 fixed to the center of the lower surface of the support plate 18 is screwed onto the screw shaft 54. As shown in the figure, the feed handle 58 provided on the back side of the machine frame main body 10 is meshed with the gear 59 that rotates in a pair, and by rotating the feed handle 58, the screw shaft 54 is passed through. The drilling unit 20 is configured to be horizontally movable.

On the other hand, the spline shaft 60, which is a component of the adapter shaft drive mechanism, has one end supported by the common bearing plate 53 and the other end penetrating the bearing 62 provided in the guide case 21. Reach the inside and fix the bevel gear 63 fixed there,
Bevel gear 29 fitted to the spline shaft 27 on the drilling unit 20 side
Is configured to be meshed with and to transmit the driving force.
Further, a pulley 64 supported by a bearing 52 fixed to the lower surface of the support plate 18 is fitted to the spline shaft 60, and a pulley 66 of a drive motor 65 arranged on the support plate 18 is passed through a belt 67. The driving force transmitted to the pulley 64 is transmitted to the spline shaft 60.

Reference numeral 68 in the drawing denotes a push button switch provided in a part of the machine frame body 10.

Next, the lateral hole drilling operation by the device thus constructed will be described.

First, the caster 15 is used to move the lateral hole punching device to a position directly above the lateral hole punching position in the manhole M. During this movement, as shown by the solid line in Fig. 1, the adapter case
Pull 35 upward from the lower part of the machine frame body 10, and at this position, tighten the adapter case fixing screw rod 33 tightly, and
By firmly sandwiching the guide rods 26, 26 between the upper plate 23 of 21 and the guide rod tightening plate 25, the lowering of the adapter case 35 is suppressed, and the feed handle 58 is rotated together therewith.
The screw shaft 54 is moved to the left in the figure via a gear 59 integrated with the same, and the guide case 21 integrated with the guide shaft 51 is brought close to one side of the machine frame body 10. At this point, the core bit 43 is not attached to the adapter 41.

In this way, when the device is transferred directly above the horizontal hole H,
Next, the horizontal adjustment screws 17 at the four corners of the machine frame body 10 ...
・ By operating, the device is installed horizontally on the ground G, and then the feed handle 58 is rotated in the opposite direction to the above to move the guide case 21 horizontally through the screw shaft 54 in the right direction in the figure.
Then, when the guide case 21 is separated from the machine frame main body 10 to a position where the tip of the core bit 43 does not hit the edge of the manhole M, the hollow cylindrical core bit 43 is attached to the adapter 41,
Loosen the screw rod 33 for fixing the adapter case and lower the core bit 43 to a position where a hole is formed. That is, the adapter case 35 is lowered into the manhole M to the position shown by the chain double-dashed line in FIG. At this time, if the handle 31 is rotated to cause the adapter case positioning screw 32 to project below the bearing plate 30, fine adjustment of the drilling position can be performed.

Then, at this position, when the push button switch 68 provided on the machine frame main body 10 is then pushed to rotate the drive motor 65, this rotational driving force is transmitted from the pulley 66 on the motor shaft to the belt 67 and the pulley 64 on the spline shaft 60. Is transmitted to the spline shaft 60 via the spline shaft 60 on the drilling unit 20 via the bevel gear 63 fixed to the shaft end and the bevel gear 29 meshing with the bevel gear 63 fixed to the shaft end. It is transmitted to the adapter shaft 40 via 42 to rotate the core bit 43. Therefore, next, while the cooling water is sent from the water pipe 44 into the adapter shaft 40, the feed handle 58 is operated to operate the adapter case.
When 35 is moved to the left in the figure, the tip of the core bit 43 pierces the wall surface of the manhole M and is embedded in the periphery of the manhole M while being cooled by cooling water and removing chips. A horizontal hole H necessary for installing an antenna is made in concrete.

When the predetermined horizontal hole H has been drilled, the feed handle 58 is turned in the direction opposite to the direction in which the core bit 43 is pulled out from the horizontal hole H, and then the drilling unit is carried out in the reverse order of the above steps.
Return 20 to its original position and finish the series of operations.

Although the present invention has been described above with reference to an example of a device for forming the horizontal hole H for installing an antenna in the manhole M necessary for the wireless liquid level measuring device, the present invention is applicable to such a device. It is needless to say that the present invention is not limited to this, and can be applied to other small-sized drilling devices for drilling a lateral hole in a vertical hole.

(Effects) As described above, according to the present invention, the support body is attached to the guide member that is movable in the horizontal direction with respect to the machine frame body so that the support body can be moved up and down, and the lowering position of the support body is adjusted to adjust its position. While the adapter shaft is inserted into the machine frame body side for drilling, the deflection of the guiding machine body and the supporting machine body due to the reaction force during lateral hole drilling is minimized. Therefore, the lateral hole can be accurately drilled.

Moreover, since the heavy drive motor for excavation is attached to the machine frame main body itself, the displacement of the machine frame main body due to the reaction force due to the lateral hole drilling can be further reduced by utilizing this weight.

[Brief description of drawings]

FIG. 1 is a side view of an apparatus showing an embodiment of the present invention, FIG. 2 is a front view of the same apparatus, FIG. 3 is an enlarged sectional view of an adapter case, and FIG. 4 is an enlarged plan view of a guide case top plate. Is. 10 …… Machine frame main body, 20 …… Drilling unit 21 …… Guide case, 23 …… Top plate 27 …… Spline shaft 32 …… Positioning adjustment screw 35 …… Adapter case, 40 …… Adapter shaft 43 …… Core bit, 50 …… Drive unit 51 …… Guide shaft, 54 …… Screw shaft 58 …… Feed handle, 60 …… Spline shaft 65 …… Drive motor, M …… Manhole H …… Horizontal hole

Claims (1)

[Claims] 1. A machine frame body to which a drive motor is attached, a guide machine body supported by the machine frame body so as to be movable in a horizontal direction, and a machine body for vertical hole drilling supported by the guide machine body. A support body that horizontally supports an adapter shaft for attaching the core pit to the machine frame side, and the support machine body provided in a part of the support machine body and abutting a part of the guide machine body. Adjusting means for adjusting the descending position of the guide body, fixing means for fixing the support machine body to the guide machine body, manual operation means provided on the machine frame main body for horizontally moving the guide machine body, and the drive A lateral hole drilling device for a side surface of a vertical hole, comprising: a spline shaft that penetrates the guide body to reach the support body to transmit the rotation of a motor to the adapter shaft.