JP3160447U - Drill stand - Google Patents

Abstract

To provide a drill stand capable of adjusting a height to any position safely and easily in an upright state. SOLUTION: A support column 3 standing on a floor surface and an elevating cylinder 4 slidably fitted on the support column 3 are slidable, and the height can be adjusted by sliding the elevating cylinder 4. A fixing member 13 fixed to the lower part of the lowering cylinder 4, a lock plate 14 rotatably attached to the fixing member 13, and fitted to the support column 3 through a minute gap, and one end fixed to the fixing member 13 A height adjustment member 5 having a spring member 15 whose other end is fixed to the lock plate 14 is provided, and the lock plate 14 is engaged with the support column 3 in an oblique state by the elastic force of the spring member 15. The lifting cylinder 4 is fixed to the column 3 by the above. [Selection] Figure 3

Description

  The present invention relates to a drill stand used in drilling work on a ceiling surface or the like of a building.

  In general construction work, the drill stand is used to hold the drill and apply upward thrust to the drill when drilling a hole from below into the ceiling of a concrete building with an electric vibration drill. Often used.

  This drill stand includes, for example, a column that is erected on the floor, a lifting cylinder that is slidably fitted on the column, a lifting rod that is slidably inserted into a guide tube fixed to the lifting column, and a lifting rod (See, for example, Utility Model Document 1).

  In addition, this drill stand has a plurality of pin holes that pierce the strut in the radial direction at a constant pitch in the height direction, and a single pin hole is provided in the lifting cylinder, which coincides with each other in a desired height state. By inserting pins into both pin holes, the elevating cylinder is fixed to the support column, and the height can be adjusted.

Japanese Utility Model Publication No. 60-29411

  By the way, in the above drill stand, it is dangerous to match the pin holes and insert the pins into both pin holes while supporting a heavy electric vibration drill by hand. It is necessary to adjust the height. Therefore, when it becomes necessary to adjust the height of the drill stand during drilling work, it is necessary to adjust the height after the drill stand is laid down once, and it takes time to start the drilling work again There was a problem.

  Further, when the height of the drill stand is adjusted, both pin holes are made to coincide with each other and the pins are inserted into the both pin holes, so that the adjustment work is complicated. In addition, the drill stand has a problem that the height can be adjusted only for each pitch of the pin holes of the column.

  An object of the present invention is to make it possible to adjust the height of the drill stand safely and easily with the drill stand upright, and to adjust the height of the drill stand to any position.

  In order to solve the above-described problems, the present invention has a column that is erected on a floor surface and a lifting cylinder that is slidably fitted on the column, and the height of the drill can be adjusted by sliding the lifting cylinder. In the stand, a fixing member fixed to the lower part of the elevating cylinder, a lock plate rotatably attached to the fixing member and externally fitted to the column via a minute gap, and one end fixed to the fixing member The other end is provided with a height adjusting member provided with a spring member fixed to the lock plate, and the lock plate is engaged with the support column in an oblique state by the elastic force of the spring member, The elevating cylinder is fixed to the support column.

  In this way, simply by applying a force to the lock plate so that the lock plate is perpendicular to the column, the engagement of the lock plate is released and the lifting cylinder slides to stop the force acting on the lock plate. In this case, since the lifting cylinder is fixed by engaging the lock plate with the support column, it is not necessary to fix the lifting cylinder with the pin while supporting the heavy drill as in the prior art. Therefore, the height of the drill stand can be adjusted safely and easily in the state where the drill stand is set up. Further, since the lifting cylinder is fixed when the force acting on the lock plate is stopped, the height of the drill stand can be freely adjusted to any position.

  The stopper can be provided with a release pedal that protrudes outward from the lock plate. If it does in this way, since engagement of a lock board can be canceled with small force, adjustment of the height of a drill stand becomes easy.

  It is preferable that the support column is tiltably attached to an installation base placed on the floor surface. In this way, even if there is an obstacle such as a chandelier near the place where the drill stand is installed, you can install or remove the drill stand while avoiding the obstacle by tilting the column. , The convenience of the drill stand will be higher.

  According to the drill stand of this device, the height can be adjusted by simply applying a force to the lock plate so that the lock plate is perpendicular to the column and releasing the force. It is not necessary to fix the lifting cylinder with a pin while supporting a heavy drill, and the height of the drill stand can be adjusted safely and easily while the drill stand is upright. Therefore, when it becomes necessary to adjust the height of the drill stand during the drilling operation, it is possible to shorten the time from the interruption of the drilling operation to the start of the drilling operation again. The height of the drill stand can be freely adjusted to any position.

The front view which shows the drill stand of embodiment of this invention Fig. 1 is an enlarged cross-sectional view of the vicinity of the installation table showing the mounting state of the support column of Fig. It is an enlarged front view near the height adjustment member of the drill stand of FIG. 1, (a) is a diagram showing a state in which the lock plate is engaged with the support column, (b) is a state in which the engagement of the lock plate is released Illustration The front view which shows the method of adjusting the height of the drill stand of FIG. The front view which shows the method of giving an upward drilling thrust to the electric vibration drill of FIG.

  Hereinafter, a drill stand according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the drill stand 1 includes a metal installation base 2 placed on the floor surface F, a support column 3 standing on the floor surface F via the installation table 2, and a slide that can freely slide on the support column 3. An elevating cylinder 4 fitted to the elevating cylinder, a height adjusting member 5 provided in the elevating cylinder 4, a slide member 6 slidably fitted to the support column 3 above the elevating cylinder 4, and an upper part of the slide member 6 It has a handle 7 that gives upward drilling thrust to the attached electric vibration drill D, and a damper 8 that suppresses the descent of the slide member 6.

  As shown in FIG. 2, the installation base 2 is formed in a disk shape, and an attachment hole 9 having a spherical inner surface is formed in the upper center. A rubber pad (not shown) is attached to the bottom surface of the installation table 2 so that the installation table 2 does not easily move on the floor surface F.

  The column 3 has a lower end 3 a formed in a spherical shape along the shape of the mounting hole 9, and is attached by fitting the lower end 3 a into the mounting hole 9 of the installation base 2. Thereby, the support | pillar 3 can be freely inclined in any direction with respect to the installation stand 2, as shown to the dashed-dotted line of FIG.

  As shown in FIG. 1, the handle 7 is rotatably attached to the side surface of the handle support portion 10 that protrudes from the upper end portion of the elevating cylinder 4 at the center in the longitudinal direction. One end of the handle 7 is connected to the other end of the link member 11 attached to the lower end of the slide member 6. The other end of the handle 7 is provided with a grip 12 for the worker M to grip.

  The damper 8 is provided between the elevating cylinder 4 and the lower end of the slide member 6. The damper 8 has a repulsive force so that the handle 7 does not jump up due to the weight of the drill D even if the operator M accidentally lifts his / her hand from the state in which an upward drilling thrust is applied to the electric vibration drill D. Has been adjusted. The damper 8 can be an oil damper or a gas damper.

  As shown in FIG. 3, the height adjusting member 5 includes a fixing member 13 that is fixed to the lower end of the elevating cylinder 4, a lock plate 14 that fixes the elevating cylinder 4 to the column 3, and an elastic force applied to the lock plate 14. A spring member 15 to be applied and a release pedal 16 for releasing the engagement between the lock plate 14 and the column 3 are provided.

  The fixing member 13 includes a fixture 17 that is fixed to the outer surface of the lower end portion of the elevating cylinder 4 and a rectangular flat plate-shaped latching piece 18 that extends downward from the fixture 17. The fixture 17 includes two attachment pieces 17a and 17b, and the attachment pieces 17a and 17b are engaged with the engagement claw 20 of the other attachment piece 17b in the engagement hole 19 formed in the one attachment piece 17a. 17 b is fastened and fixed by a bolt 21. The semi-cylindrical lower end edge of each mounting piece 17a, 17b is formed with a contact claw 22 that protrudes toward the inner surface. By attaching this contact claw 22 to the lower end of the lifting cylinder 4, the attachment The tool 17 is positioned.

  The hooking piece 18 is fixed by a pin 23 in a state in which one end thereof is overlapped with a planar portion of one mounting piece 17 a of the fixture 17.

  The lock plate 14 is formed with a circular through hole 24 having a diameter slightly larger than the outer diameter of the support column 3 at the center, and is externally fitted to the support column 3 through a minute gap. The lock plate 14 has one end portion 14 a formed in a hammer shape, and the one end portion 14 a is rotatably fitted in a through hole 25 formed in the other end portion of the latching piece 18. The other end portion 14b of the lock plate 14 is formed in a square shape.

  The spring member 15 is formed of a coil spring, and both end portions 15a and 15b thereof are bent so as to be directed outward in the axial direction. One end portion 15a is attached to the attachment piece 17a to which the latch piece 18 of the attachment 17 is attached. Is fixed, and the other end 15 b is fixed to one end 14 a of the lock plate 14. As a result, as shown in FIG. 3A, the lock plate 14 is brought into an inclined state by the elastic force of the coil spring and engages with the column 3, and the lifting cylinder 4 is fixed to the column 3.

  The release pedal 16 is formed in a rectangular flat plate shape, and a circular through hole 26 having a diameter larger than the outer diameter of the support column 3 is formed at a position closer to one end side than the center portion thereof. In this state, it is placed on the upper surface of the lock plate 14. The other end portion 16 a of the release pedal 16 projects outward from the other end portion 14 b of the lock plate 14.

  The drill stand 1 configured as described above is used as follows, for example.

  First, as shown in FIGS. 3A and 4, while lifting the handle 7 and the slide member 6 by hand, the release pedal 16 of the height adjustment member 5 is lightly stepped on with a foot. At this time, since the force in the pressing direction that makes the lock plate 14 perpendicular to the column 3 acts on the lock plate 14, the lock plate 14 becomes parallel to the column 3 as shown in FIG. The engagement of the lock plate 14 is released, and the elevating cylinder 4 slides upward together with the height adjusting member 5. When the depression of the release pedal 16 is stopped, the lock plate 14 is brought into an inclined state again by the elastic force of the coil spring to engage with the column 3 as shown in FIG. Fixed. In this way, the height of the drill stand 1 is increased.

  Next, as shown in FIG. 5, when the handle 7 is rotated downward while holding the grip portion 12 by hand, the slide member 6 slides upward, and an upward drilling thrust is applied to the electric vibratory drill D.

  On the other hand, when the release pedal 16 of the height adjustment member 5 is lightly depressed while supporting the handle 7 and the slide member 6 by hand, the engagement of the lock plate 14 is released, and the elevating cylinder 4 slides downward together with the height adjustment member 5. To do. When the depression of the release pedal 16 is stopped, the lock plate 14 is inclined again and engaged with the column 3, and the elevating cylinder 4 is fixed to the column 3. In this way, the height of the drill stand 1 is lowered.

  As described above, the drill stand 1 can adjust the height simply by stepping on the release pedal 16 of the height adjusting member 5 and sliding the lifting cylinder 4 and stopping the release pedal 16 from being depressed. There is no need to fix the lifting cylinder 4 with a pin while supporting the heavy electric vibration drill D. Therefore, the height of the drill stand 1 can be adjusted safely and easily in the standing state. Moreover, the height of the drill stand 1 can be freely adjusted to any position.

DESCRIPTION OF SYMBOLS 1 Drill stand 2 Installation stand 3 Support | pillar 4 Lifting cylinder 5 Height adjustment member 13 Fixing member 14 Locking plate 15 Spring member 16 Release pedal F Floor surface

Claims (3)

It has a column (3) that stands on the floor (F) and an elevating cylinder (4) that is slidably fitted on the column (3), and the elevating cylinder (4) is slid to raise the height. In the adjustable drill stand (1),
A fixing member (13) fixed to the lower part of the elevating cylinder (4), and a lock plate that is rotatably attached to the fixing member (13) and is externally fitted to the support column (3) through a minute gap. A height adjusting member (5) including (14) and a spring member (15) having one end fixed to the fixing member (13) and the other end fixed to the lock plate (14); By engaging the lock plate (14) in an oblique state with the support column (3) by the elastic force of the member (15), the elevating cylinder (4) is fixed to the support column (3). A drill stand characterized by that.   The drill stand according to claim 1, wherein a release pedal (16) projecting outward from the lock plate (14) is provided on the height adjusting member (5).   The drill stand according to claim 1 or 2, wherein the column (3) is attached to an installation base (2) placed on a floor surface (F) so as to be freely tilted.

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