KR100490469B1 - Drilling machine for ceiling surface - Google Patents

Abstract

The present invention relates to a perforator for a ceiling surface, comprising: a drill support having a drill support, a drill bit detachably coupled to the drill support, and a drill motor for rotating the drill bit; and an upper end of the drill bit. A lifting part for raising the drill support relative to the ceiling surface and lowering the drill bit away from the ceiling surface so as to be in pressure contact with the floor; a bottom support for supporting the lifting part with respect to the floor surface; and a rotary drive of the drill motor; In the ceiling perforator having a driving control unit for operating the lifting operation of the lifting unit, and a control unit for controlling the rotary drive of the drill motor and the lifting operation of the lifting unit in accordance with the operation signal of the drive operation unit, the lifting unit is The lowest descending position of the drill support and the drill bit along the direction parallel to the plate surface of the ceiling surface D) a moving position elevating unit for elevating the drill support between freely movable movable working positions, and the movable position elevating unit between the movable working position and the drill working position in which the drill bit is in pressure contact with the ceiling surface. And a work position raising and lowering portion for elevating the raised drill support. Thereby, the drill bit can be easily and accurately lowered to the moving work position, thereby preventing the drill bit from being damaged when moving between the drilling work positions and improving the moving work efficiency.

Description

Drilling Machine for Ceiling Surface

The present invention relates to a perforator for a ceiling surface, and more particularly, to a perforator that allows a worker to stand on the floor to form a hole in the ceiling surface.

Ceiling units such as lighting fixtures and cable racks are installed on the ceilings of new buildings and railway vehicles, and a number of holes are formed in the ceiling to install these ceiling units.

Conventionally, a worker climbs on a workbench or a ladder installed on the floor to form a hole in the ceiling, and drills with a hammer drill.However, a method of forming a hole in the ceiling by climbing on a workbench or a ladder occurs during drilling work. There is a problem that not only the health of the worker is damaged by the safety accident, dust, etc., but also the work efficiency is reduced.

In order to solve this problem, a perforator has been conceived and used so that an operator can form a hole in the ceiling surface standing on the floor.

14 is a perspective view of a conventional ceiling perforator.

As shown in FIG. 14, the conventional ceiling drill, the circular cylindrical drill support 110, the chip cover assembly 120 coupled to the upper end of the drill support 110, and the drill support 110 Positioning unit 130 having a guide rod 131 is coupled to move to the left and right, and the lifting unit 140 coupled to the bottom of the position adjusting unit 130 to elevate the position adjusting unit 130 ), Four support pipes 150 for supporting the lifting unit 140, a bottom support 170 for supporting the support pipe 150 with respect to the floor, and elevating operation for operating the lifting unit 140. The drill part 160 which has the part 180 and the drill motor 161 provided in the inside of the drill support body 110 is provided.

The chip cover assembly 120 is coupled to the cover body 121 having a circular cross section tubular shape, a funnel-shaped first chip cover 122 coupled to an upper end of the cover body 121, and a lower end of the cover body 121. A circular cross section tubular second chip cover 123, the base plate 124 interposed between the second chip cover 123 and the drill support 110, and is standing up on the base plate 124 It has a spring 125.

On the upper side of the spring 125, a spring support plate 126 is provided.

The lifting unit 140 has a straight column 141, a rack gear 142 accommodated in the column 141, and a rack cover 143 surrounding the upper end of the rack gear 142.

The position adjusting unit 130 is coupled to the top of the rack cover 143.

The lifting driving unit 180 has a handle 181 and a spear gear (not shown) connected to the rack gear 142 so that the rack cover 143 can be raised and lowered according to the rotation direction of the handle 181.

The drill unit 160 has a drill chuck 162 for mounting the drill bit 163 to be connected to the motor shaft in addition to the drill motor 161.

Referring to the operation of the conventional ceiling drilling machine having such a configuration as follows. For convenience of explanation, it is assumed that the drill bit 163 is mounted on the drill chuck 162.

First, the handle 181 is operated to raise the rack cover 143. As the rack cover 143 is raised, the drill bit 163 is raised toward the ceiling surface. Here, the rising operation of the rack cover 143 is performed until the upper end of the drill bit 163 is adjacent to the ceiling surface.

Next, the drill support 110 is moved left and right along the longitudinal direction of the guide rod 131 to adjust the position of the drill bit 163. Here, the position adjustment of the drill bit 163 is performed until the upper end of the drill bit 163 coincides with the drilling point.

When the position adjustment of the drill bit 163 is completed, the handle 181 is operated to raise the rack cover 143 again. Here, the second rising operation of the rack cover 143 is performed until the upper end of the drill bit 163 contacts the ceiling surface.

Next, the on-off switch (not shown) is operated to supply the driving voltage to the drill motor 161. As the driving voltage is supplied to the drill motor 161, the drill bit 163 is rotated and thus the drilling operation is performed.

Here, the depth of the hole formed by the drilling operation is to be judged by the operator.

That is, when the operator determines that the hole is formed at an appropriate depth according to the type of the fixing member (such as a support post for fixing the ceiling support equipment to the ceiling surface), the operator operates the on / off switch to drive the drill motor 161. Shut off the voltage supply.

Meanwhile, the powder generated during the drilling operation is introduced through the first chip cover 122 and then collected in the second chip cover 123.

When the supply of the driving voltage to the drill motor 161 is cut off, the handle 181 is operated to lower the rack cover 143. As the rack cover 143 descends, the drill bit 163 also descends in a direction away from the ceiling surface. The lowering operation of the rack cover 143 is carried out until the drill bit 163 can move along the direction parallel to the floor surface without being disturbed by obstacles.

Next, the bottom support 170 is pushed to the next drilling operation position, and then the drilling operation can be performed by the above-described method.

A conventional punching machine having the above-described configuration is disclosed in 1998 Patent Application No. 58154 (name of the drilling drill).

By the way, according to the conventional ceiling drilling machine, when moving between the drilling operation position, the operator operates the handle 181 while lowering the rack cover 143 while moving the drill support 110 (that is, drill bit 163) It is difficult to lower the drill bit 163 to the movable working position because it is necessary to continuously check whether the working position (the position which can move freely along the direction parallel to the ceiling surface) becomes difficult. There was this.

Further, when the actual lowering position of the drill support 110 (ie, the drill bit 163) is higher than the optimum lowering position (the highest lowering position that can move without being obstructed by obstacles), the drill bit when moving between the drilling work positions There is a risk that the 163 is damaged, and when the actual lowering position of the drill support 110 (ie, the drill bit 163) is lower than the optimal lowering position, a secondary problem occurs that the moving work efficiency is lowered.

It is therefore an object of the present invention to provide a ceiling perforator which allows the drill bit to be easily and accurately lowered to a moving work position.

The object is, according to the present invention, a drill having a drill support, a drill bit detachably coupled to the drill support and a drill motor for rotationally driving the drill bit, and the upper end of the drill bit is pressed against the ceiling surface Lifting unit for raising the drill support relative to the ceiling surface and lowering the drill bit is separated from the ceiling surface to contact, a bottom support for supporting the lifting unit against the floor surface, the rotary drive and the lifting of the drill motor In a perforator for a ceiling surface having a driving control unit for manipulating the lifting operation of the negative portion, and a control unit for controlling the rotary drive of the drill motor and the lifting operation of the lifting unit in accordance with the operation signal of the drive operation unit, the lifting unit is the drill support body And the drill bit moves freely along the direction parallel to the plate surface of the ceiling A moving position elevating unit for elevating the drill support between the movable working positions, and the movable position elevating unit between the movable working position and the drill working position in which the drill bit is in pressure contact with the ceiling surface. It is achieved by a perforator for a ceiling surface, characterized in that it comprises a work position lifting portion for lifting the drill support.

In order to expand the range of workable ceiling surface, the height of the lowest support position of the drill support according to the number of stacking is installed between the lifting position and the drill support body so that the height of the bottom distance is different distance It is preferable to configure to further include a throttle.

And to prevent damage to the drill bit, at least one of the height adjustment plate may be made of an elastic material.

It is also coupled to the lower end of the drill support to prevent damage to the drill bit and improve the efficiency of the drilling operation, the impact force applied to the drill bit from the ceiling surface when the drill support reaches the drill working position It is preferable to further include a dustproof pressing unit for absorbing the accumulation of the elastic force for pressing the drill bit toward the ceiling surface.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are respectively a perspective view of a ceiling perforator according to an embodiment of the present invention, Figure 3 is a perspective view showing a coupling state of the drill support and the drill portion of the ceiling perforator according to an embodiment of the present invention Figure 4 and Figure 5 is a view showing a method for coupling the drill portion of the drilling machine for ceiling ceiling according to an embodiment of the present invention, respectively, Figure 6 is a ceiling surface according to an embodiment of the present invention A control block diagram of the perforator.

As shown in these figures, the ceiling perforator according to an embodiment of the present invention, the drill support 10 in the form of a box, the drill bit 23 is coupled to the drill support 10 so that the drill bit 23 is exposed to the outside. A drill portion 20, a dust cover 60 fixed to the drill support 10 so as to surround the drill bit 23, an anti-vibration pressurizing portion 70 coupled to the lower end of the drill support 10, and a drill portion Lifting portions 30 and 30 'for lifting and lowering the 20, box-shaped bottom support 90 for supporting the lifting portions 30 and 30' with respect to the floor surface, the drill portion 20 and the lifting portion ( A control unit for controlling the operation of the drill motor 24 and the lifting units 30 and 30 'in accordance with an input signal from the driving operation unit 40 and the driving operation unit 40 for manipulating the operations of 30 and 30' ( 50).

The drill support 10 has a height difference between the enclosure 11 having the door 12 formed on the front surface, the seating portion 19 fixed to the bottom surface of the enclosure 11, and the inner rear wall surface of the enclosure 11. The upper guide channel 13 and the lower guide channel 16 coupled along the transverse direction, the upper pressing portion 14 coupled to the upper guide channel 13 through a pair of upper fixing bolts 15, It has a lower pressing portion 17 coupled to the lower guide channel 16 through the pair of lower fixing bolts 18.

The housing 11 is provided with a drill fixing hole 11a in the central region of the upper surface, and is fixed to the locking plate 35 to be described later.

The seating portion 19 has a semicircular seating groove 19b formed on an upper surface thereof, and a seating plate 19a made of an elastic material (rubber or the like) is formed on the seating groove 19b forming surface.

The upper pressing portion 14 is constituted by a pair of upper fixing pieces 14c and 14d each having a semicircular upper pressing groove 14a formed to face each other.

The lower press part 17 is comprised from a pair of lower fixing pieces 17c and 17d in which the semicircular lower presser grooves 17a were formed so as to face each other.

An upper pressing plate 14b of an elastic material (rubber, etc.) and an upper pressing groove forming surface of the pair of upper fixing pieces 14c and 14d and a lower pressing groove forming surface of the pair of lower fixing pieces 17c and 17d, respectively. The lower press plate 17b is formed.

The drill portion 20 includes a drill housing 21 having a substantially cylindrical drill housing 21 in addition to the drill bit 23, a drill chuck 22 formed on the upper surface of the drill housing 21 to have a diameter smaller than that of the drill housing 21, and a drill housing. It has the drill motor 24 built in (21).

The drill bit 23 is detachably coupled to the drill chuck 22.

In the drill part 20 having such a configuration, the bottom surface of the drill housing 21 is in surface contact with the seating plate 19a of the seating part 19, and the side surface of the drill part 21 is The surface contact with the upper pressing plate (14b) and the lower pressing plate (17b), mounted on the drill support 10 so that the upper region of the drill chuck 22 is exposed to the outside through the drill fixing hole (11a) of the housing 11 do.

The dust cover 60 is formed in a cup shape, and the upper end of the dust cover 60 occupies a position lower than the upper end of the drill bit 23.

The anti-vibration pressurizing unit 70 has four dust-proof units, each of which is provided in a dust-proof support 71 having a square cross-section having an anti-vibration space 71a upwardly opened, and in four corner regions of the dust-proof space 71a. 72 and a locking plate 73 provided in the dustproof space 71a so as to be in pressure contact with the upper end of each of the vibration isolators 72.

The anti-vibration support member 71 has a separation prevention jaw 71b formed inward in the circumferential direction. The separation of the locking plate 73 is prevented by the separation prevention step 71b.

The vibration damper 72 may be implemented with a return spring and a shock absorber as is generally known in the art.

The elevating portions 30 and 30 'have a moving position elevating portion 30 and a working position elevating portion 30' which are sequentially provided along the height direction from the upper surface of the bottom support 90. As shown in FIG.

The moving position elevating unit 30 has a lower elevating guide tube 31 and a lower elevating guide tube 31 of a square upper surface standing upright on the upper surface of the bottom support 90, and the lower elevating guide tube 31 can be slidably moved along the longitudinal direction. It has a moving position lifting hydraulic device 33 having an upper elevating guide pipe 32 coupled to the elevating guide pipe 31, and a working position elevating cylinder 33a supporting the bottom of the upper elevating guide pipe 32. have.

The lower lifting guide tube 31 has an upward limiting jaw 31a formed at an upper end of the lower lifting guide tube 31 toward the inner side.

The upper lifting guide tube 32 is formed with a hydraulic device installation box 34 having a door 34a at the bottom.

The hydraulic device installation box 34 has a locking step 32a which interacts with the lifting limiting step 31a of the lower lifting guide tube 31 at the bottom circumferential edge thereof.

And the upper lifting guide tube 32 is formed on the inner wall surface two pairs of guide rails (32b) along the height direction.

The moving position elevating hydraulic device 33 is, as is well known in the art, in addition to the moving position elevating cylinder 33a as an actuator, a hydraulic pump (not shown), a hydraulic pump driving motor (not shown), Oil tank (not shown), pressure gauge (not shown), flow path piping (not shown) and the like.

The moving position elevating cylinder 33a is installed so that the moving position elevating piston 33b is disposed along the longitudinal direction of the lower elevating guide tube 31, and the pressure gauge (not shown) is the outer wall of the lower elevating guide tube 31. And other components (not shown) such as a hydraulic pump are installed inside the floor support 90.

The moving position raising and lowering unit 30 having such a configuration raises and lowers the drill support 10 between the lowest lowered position and the movable work position of the drill support 10.

Here, the lowest lowered position refers to the initial position of the drill support 10, and specifically, the upper support guide pipe 32 is a position in which the drill support 10 is occupied. And the movement work position is the drill support 10 when the drill bit 23 can move freely along the direction parallel to the plate surface of the ceiling surface (that is, it can move without being disturbed by obstacles such as beams formed on the ceiling surface) ) Refers to the position occupied, specifically, the position where the drill support 10 is occupied when the upper elevating guide pipe 32 is in the raised position.

In consideration of the lifting section of the moving position lifting unit 30, the length of the lower lifting guide tube 31, the length of the upper lifting guide tube 32, the length of the moving position lifting piston 33b, and the like can be appropriately selected.

The work position elevating unit 30 'includes a work position elevating hydraulic device 33' having a work position elevating cylinder 33'a installed on the upper surface of the hydraulic device installation box 34, and a work position elevating cylinder 33'a. Has a square-shaped lifting block 35 'which is coupled to the upper end of the working position lifting piston 33'b.

The work position raising and lowering hydraulic device 33 'is, as is widely known in the art, in addition to the work position raising cylinder 33'a as an actuator, a hydraulic pump (not shown) and a motor for driving a hydraulic pump (not shown). ), Oil tank (not shown), pressure gauge (not shown), flow path piping (not shown), and the like.

The work position elevating cylinder 33'a is installed so that the work position elevating piston 33'b is arranged along the longitudinal direction of the upper elevating guide tube 32, and the pressure gauge (not shown) is provided with the lower elevating guide tube ( 31), and other parts such as a hydraulic pump are provided inside the hydraulic device installation box 34.

The elevating block 35 'is formed with four guide ribs 35'a inserted into the guide rails 32b of the upper elevating guide tube 32, respectively. Each guide rib 35'a is formed to protrude beyond the bottom of the elevating block 35 '.

The working position lifting unit 30 'having such a configuration raises and lowers the drill support 10 between the moving work position and the drill working position of the drill support 10.

Here, the drill working position is a variable position (depending on the height of the ceiling and the depth of the hole determined during the actual drilling work) which is added to the height of the ceiling by the depth of the drilled hole.

In consideration of the lifting section of the working position lifting unit 30 ', the lifting block 35', the vibration support 71, the enclosure 11, the length of the working position lifting piston 33'b, the guide rail 32b. And the length of the guide rib 35'a can be appropriately selected.

The bottom support 90 has a rolling wheel 91 attached to the bottom corner region, and four flow preventing holes 92 are mounted on a pair of opposing side surfaces.

The driving operation unit 40 includes a moving button for moving position device for raising and lowering the moving position lifting piston 33b and a lowering button 42 for moving position device for lowering and moving the moving position lifting piston 33b. And, the up button 41 'for the work position device for raising and lowering the work position elevating piston 33'b, and the down button 42 for the moving position device for lowering and operating the work position elevating piston 33'b. And a drill button 43 for rotating and driving the drill bit 23.

The control unit 50 has a rising button 41 for a moving position device, a lowering button 42 for a moving position device, a rising button 41 'for a working position device, a lowering button 42' for a working position device, and a drill at an input terminal. A button 43 is connected, and a drill motor 24, a moving position lifting hydraulic device 33, and a working position lifting hydraulic device 33 'are connected to the output terminal through the voltage switching unit 51.

The voltage switching unit 51 turns on and off the driving voltage of the drill motor 24 supplied from the voltage supply unit 52 and the driving voltage of the lifting hydraulic devices 33 and 33 'according to the control signal from the control unit 50, respectively. To act.

A method of forming a hole in the ceiling surface using a ceiling perforator according to an embodiment of the present invention having such a configuration will be described below with reference to FIGS. 7 to 11.

First, the operator moves the ceiling perforator to the working position, and then presses the up button 41 for the movement position device. When the upward movement button 41 for the movement position device is pressed, the control unit 50 supplies a driving voltage for the upward movement to the movement position elevation hydraulic device 33 while the movement position device upward button 41 is pressed. The voltage switching unit 51 is controlled so as to be possible. Since the pressing operation of the up button 41 for the mobile position device and the control operation of the controller 50 are widely known in the art, detailed description thereof will be omitted.

While the driving voltage is supplied to the moving position elevating hydraulic device 33, the moving position elevating piston 33b ascends, so that the drill bit 23 also rises toward the ceiling surface (see Fig. 7).

Pressing operation of the lift button 41 for the movement position device is lifted by the interaction between the lift limiting jaw (31a) of the lower elevating guide pipe (31) and the locking jaw (32a) of the upper elevating guide pipe (32). It is possible to continue until the rise of the guide tube 32 is limited.

Next, the lift button 41 'for the work position device is pressed. When the lift button 41 'for the work position device is pressed, the control unit 50 drives the lifter 41 to the work position lift hydraulic device 33' while the lift button 41 'for the work position device is being pressed. The voltage switching unit 51 is controlled to supply a voltage. Since the pressing operation of the up button 41 'for the work position device and the control operation of the controller 50 are widely known in the art, the detailed description thereof will be omitted.

While the driving voltage is supplied to the working position elevating hydraulic device 33 ', the occupation position elevating piston 33'b rises, and accordingly, the drill bit 23 also rises again toward the ceiling surface (see Fig. 8).

The pressing operation of the lift button 41 'for the work position device is continued until the upper end of the drill bit 23 is in pressure contact with the ceiling surface. When the upper end of the drill bit 23 is in pressure contact with the ceiling surface, the impact force is absorbed by the vibration isolator 72 and the elastic force is accumulated. In this case, the pressing operation of the up button 41 'is performed such that the upper end of the drill bit 23 continues to pressurize the ceiling surface during the drilling operation by the elastic force accumulated in the vibration isolator 72. desirable. Of course, if the upper end of the drill bit 23 is not in pressure contact with the ceiling surface during the drilling operation, it is of course possible to perform a pressing operation of the rising button 41 'for the work position device little by little.

When the upper end of the drill bit 23 is in contact with the ceiling surface, the operator operates the drill button 43 in the on state. When the drill button 43 is operated in the on state, the controller 50 controls the voltage switching unit 51 to supply a driving voltage to the drill motor 24. The drill bit 23 is driven to rotate while the driving voltage is supplied to the drill motor 24.

As the drill bit 23 is driven to rotate, a drilling operation is performed while the drill bit 23 is in pressure contact with the ceiling surface (see FIG. 9).

When the drilling operation is completed, the operator operates the drill button 43 in the off state. When the drill button 43 is operated in the off state, the controller 50 controls the voltage switching unit 51 to block the driving voltage supplied to the drill motor 24. When the driving voltage supplied to the drill motor 24 is cut off, the rotation operation of the drill bit 23, that is, the drilling operation is stopped.

When the rotation operation of the drill bit 23 is stopped, the operator releases the pressing operation state of the up button 41 'for the work position device.

When the push operation state of the lift button 41 'for the work position device is released, the controller 50 opens the voltage switching unit 51 so that the driving voltage for the rise supplied to the work position lift hydraulic device 33' is cut off. To control.

Next, the operator presses the down button 42 'for the work position device. When the lowering button 42 'for the work position device is pressed, the controller 50 drives the lowering operation of the working position lifting hydraulic device 33' while the lowering button 42 'for the working position device is pressed. The voltage switching unit 51 is controlled to supply a voltage. Since the pressing operation of the lowering button 42 for the work position device and the control operation of the controller 50 are widely known in the art, detailed descriptions thereof will be omitted. While the driving voltage is supplied to the working position elevating hydraulic device 33 ', the working position elevating piston 33'b is lowered, and thus the drill bit 23 is also lowered toward the bottom surface (see FIG. 10).

The pushing operation of the work position lowering button 42 'is continued until the lowering of the elevating block 35' is restricted by the lower end of the guide rib 35'a contacting the upper surface of the hydraulic device installation box 34. Can be.

Then, by pushing the bottom support 90 to move to the next drilling point, the pressing operation of the lift button 41 'for the work position device, the on-state operation of the drill button 43, the off-state operation of the drill bit 43, The drilling operation can be performed by repeating the operation of the lowering button 42 'for the work position device.

When all the drilling work is completed, the operator performs the drill operation of the off state of the drill button 43, the operation of the lowering button 42 'for the work position device, and the pressing operation of the lowering button 42 for the moving position device. Return 10 to the lowest falling position (see Fig. 11).

As described above, according to one embodiment of the present invention, the lifting unit 30, 30 'for elevating the drill support 10 moves with the moving position elevating unit 30 for elevating between the lowest lowered position and the moving work position. Separating into working position lifting part 30 'to raise and lower the working position and the drill working position, and operate the working position raising part 30' when moving the drilling work position so that the drill bit 23 can be lowered to the moving working position. As a result, the drill bit 23 can be easily and accurately lowered to the moving work position.

And by absorbing the impact force applied to the drill bit 23 from the ceiling surface to accumulate an elastic force for accumulating an elastic force for pressing the drill bit 23 toward the ceiling surface, thereby the drill bit 23 of the It can prevent damage and improve the efficiency of drilling.

Meanwhile, in the above-described embodiment, the separation distance between the drill support 10 and the upper lifting guide tube 32 is configured to be constant, but the separation distance between the drill support 10 and the upper lifting guide tube 32 can be adjusted. The present invention can be practiced so as to.

12 is a main perspective view of the ceiling perforator according to another embodiment of the present invention, Figure 13 is a cross-sectional view of the main portion of the ceiling perforator according to another embodiment of the present invention.

The above-described perforator for ceiling according to another embodiment of the present invention, except that the structure of the lifting block 35 "and the dustproof pressing part 70" is changed and the height adjustment plate 75 "is added. The same configuration as that of the ceiling perforator according to an embodiment of the following will be used for the same configuration as the ceiling perforator according to an embodiment of the present invention for convenience of description below and the detailed description thereof will be omitted. Let's do it.

Lifting block 35 "of the ceiling perforator according to another embodiment of the present invention is that the bar guide groove 35" b is formed along the height direction so as to correspond to the plate stacking bar 74 "which will be described later on the upper surface Except for the point, it has the same configuration as the lifting block 35 'of the ceiling perforator according to the embodiment of the present invention.

According to another embodiment of the present invention, an anti-vibration pressurizing unit 70 ″ of a ceiling perforator according to another embodiment of the present invention is provided with a single plate stacking rod 74 ″ formed at a bottom edge of a dustproof support. It has the same configuration as the dustproof pressing unit 70 of the ceiling perforator according to the example.

The anti-vibration pressurizing part 70 "having such a configuration is coupled to the lifting block 35" so that each plate stacking bar 74 "is inserted into each bar guide groove 35" b.

And the ceiling perforator according to another embodiment of the present invention has a height adjustment plate 75 "mounted to the plate stacking rod 74" through the lamination hole (75 "a).

Here, the number of height adjusting plates 75 ″ to be stacked may be determined in consideration of the height of the ceiling surface, the lifting stroke of the moving position lifting unit 30, and the lifting stroke of the working position raising unit 30 ′.

By adding the height adjusting plate 75 "between the drill support 10 and the work position raising part 30 'in this way, it is possible to expand the range of the ceiling surface (in terms of the height section) in which the drilling operation is possible. do.

And when the height control plate (75 ") is made of an elastic material, such as rubber, it is possible to prevent the damage of the drill bit 23 in pressure contact with the ceiling surface.

In the case of the ceiling perforator according to another embodiment of the present invention having such a configuration, the same method as the ceiling perforator according to the embodiment of the present invention except that the height adjustment plate 75 "is installed before the drilling operation. You can form a hole in the ceiling surface.

Therefore, according to the present invention, the lifting part for elevating the drill support body is separated into a moving position elevating unit for elevating between the lowest lowered position and the moving work position and the working position elevating unit for elevating between the movable working position and the drill working position and at the time of moving the drilling operation By operating only the work position lifting unit to lower the drill bit to the moving work position, the drill bit can be easily and accurately lowered to the moving work position. Accordingly, the drill bit can be prevented from being damaged when moving between the drilling work positions, and the moving work efficiency can be improved.

1 and 2 are a perspective view of a perforator for ceiling according to an embodiment of the present invention, respectively;

Figure 3 is a perspective view showing a coupled state of the drill support and the drill portion of the perforator for ceiling according to an embodiment of the present invention,

4 and 5 are views each showing a method of coupling the drill portion of the drilling machine for ceiling according to an embodiment of the present invention to the drill support;

6 is a control block diagram of a perforator for ceiling according to an embodiment of the present invention;

7 to 11 are each an operational state diagram of the ceiling perforator according to an embodiment of the present invention,

12 is a perspective view of the main portion of the ceiling perforator according to another embodiment of the present invention;

13 is a sectional view showing the main parts of a perforator for ceiling according to another embodiment of the present invention;

14 is a perspective view of a conventional ceiling perforator.

Explanation of symbols on main parts of drawing

10, 110: drill support 11: enclosure

20, 160: drill part 30, 30 ', 140: lifting part

31: Lower ascent guide 32: Upper ascent guide

33, 33 ': Lifting hydraulic device 35', 35 ": Lifting block

40: driving control unit 50: control unit

60: Dust cover 70, 70 ": Dustproof pressing part

90, 170: bottom support 120: chip cover assembly

130: position adjusting unit 150: support pipe

Claims (4)

A drill portion having a drill support, a drill bit detachably coupled to the drill support, and a drill motor for rotationally driving the drill bit, and the drill support on the ceiling surface so that the upper end of the drill bit is in pressure contact with the ceiling surface. A lifting part for lifting the drill bit up and down from the ceiling, a bottom support for supporting the lifting part with respect to a floor, a driving operation part for manipulating the driving of the drill motor and the lifting operation of the lifting part. And, In the perforator for ceiling having a control unit for controlling the rotary drive of the drill motor and the lifting operation of the lifting unit in accordance with the operation signal of the drive operation unit, The elevating part is a moving position elevating part for elevating the drill support between a lowering position of the drill support and a moving work position in which the drill bit can move freely in a direction parallel to the plate surface of the ceiling surface; And a working position elevating portion for elevating the drill support raised by the moving position elevating portion between a position and a drill working position in which the drill bit is in pressure contact with the ceiling surface. The method of claim 1, And a height control plate laminated between the working position lifting unit and the drill support to increase the height of the drill support with respect to the bottom surface according to the number of stacks. The method of claim 2, At least one of the height adjustment plate is a ceiling perforator, characterized in that made of an elastic material. The method according to any one of claims 1 to 3, It is coupled to the lower end of the drill support, absorbs the impact force applied to the drill bit from the ceiling when the drill support reaches the drill working position to accumulate an elastic force for pressing the drill bit toward the ceiling surface Perforator for ceiling surface, characterized in that further comprising a dustproof pressing unit.