JPH06103043B2 - Vibration generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention enables a vibration generator for promoting the filling of concrete used at a construction site or the like to be easily and quickly attached to and detached from a wall surface such as a formwork panel. The present invention relates to a vibration generator with a clamp device.

<Prior Art> In order to fix the vibration generator to a predetermined position on the wall surface as described above, conventionally, a wedge-shaped support frame (a rear surface side) having a taper portion (formed on the back side) which is contracted downward is provided in the main body of the device A crimping leg) is inserted into the fixed position from above, and is strongly pressed and fixed by the wedge action of the taper portion of the wedge-shaped back surface (Japanese Patent Application No. 58-236875).

<Problems to be Solved by the Invention> However, in the crimping and fixing method as described above, when the fixed symmetrical object is the vibration generating device, after the crimping and fixing, the wedge action is caused by the vibration when the device itself is driven. Since it becomes even stronger, the support becomes even stronger on one side, but the fixing force becomes too strong, and there was a problem that it was difficult to remove at the time of removal.

Therefore, conventionally, it has been necessary to hit up from below with a hammer or the like, which is quite troublesome, and sometimes the device itself may be damaged. Further, in this method, since the vibration generator is supported by insertion and fixation by artificial pressing force, the fixing pressure varies due to each use or individual difference of the user, so that the optimum fixing pressure is obtained. It was hard to support. In particular, there is a problem in that, when using several or a dozen of such devices at the same time, they cannot be fixed all at once.

<Means for Solving Problems> The present invention has been made in view of the problems of the conventional fixing means as described above, and the characteristic configuration (means) is that the wall surface and the wall surface are close to each other. A vibration generating device in which a clamp device C is fitted between the members supported by the clamp device C, and the wall surface is attached and detached by the clamp device C.
Is a pressure-bonding leg 6 that is pressure-bonded to the wall surface side, a cylinder chamber 8 provided in the pressure-bonding leg 6 portion, is housed in the cylinder chamber 8 and is slidable in the wall surface direction, and It comprises a piston 11 for moving the pressing surface 13 of the crimping leg 6 toward and away from the member supported near the wall surface. When the vibration generating device 2 is attached to and detached from the wall surface side, the inside of the cylinder chamber 8 is Introduce pressure fluid to the piston
By sliding 11 and advancing and retreating the pressing surface 13 of the crimping leg 6 by the piston 11, the stroke between the crimping leg 6 and the pressing surface 13 between the members supported close to the wall surface is adjusted. The vibration generator is attached and detached.

<Operation> According to the present invention, the pressing surface 13 of the crimping leg 6 moves back and forth due to the sliding (driving) of the piston 11 of the clamp device C, so that between the wall surface and the member supported near the wall surface. The stroke between the crimping leg 6 and the pressing surface 13 is adjusted, so that the vibration generator can be easily and quickly attached to and detached from the wall surface.

<Embodiment> FIGS. 1 to 5 show an embodiment of a vibration generator with a clamp device according to the present invention.

This example is a case of the vibration generator 2 used to fill the fresh concrete 1, and the rear surface 3'of the concrete filling formwork panel (wall surface) 3 and the horizontal pipe for the panel (wall surface) This is a case where it is pressure-bonded and fixed in the sandwiching space S between the member 4 supported in close proximity to.

In the figure, 5 is a device main body of the clamp device C attached to the wall surface side of the form panel 3 of the vibration generator 2, and a downward pressure-bonding leg 6 is provided at the front part of the rectangular tubular body 7. . The vibration generator 2 is shared and incorporated in the inside of the rectangular tubular body 7.

The crimping leg 6 has an axis centered in the front-rear direction at the upper portion thereof and is orthogonal to the horizontal pipe 4 for supporting the panel to form a cylinder chamber 8
The front portion of the cylinder chamber 8, that is, the surface facing the back surface 3 ′ of the form panel 3 is airtightly closed by a closing plate 10 with a sealing material 9 interposed. A piston 11 having a rear surface 13 for pressing the panel supporting pipe 4 from the front is housed in the cylinder chamber 8 so as to be slidable in the front-rear direction. Reference numeral 12 is a piston ring mounted on the outer circumference of the piston 11.

Reference numeral 13a is an arcuate recess provided on the pressing surface 13 of the piston 11 and has a radius of curvature substantially the same as the radius of the lateral pipe 4.

As shown in FIG.
As a mechanism to return the
To provide. The spring 17 penetrates through a spring accommodating hole 14 provided inside the side wall of the cylinder chamber 8 and the piston 11
A guide screw 15 screwed into the outer edge of the pressing surface 13 of
The screw 15 is fitted and the flange 16a is provided on the head 15a side of the screw.
Is supported by the cylindrical body 16 having the above structure, and prevents the compression spring 17 from loosening in the radial direction. Therefore, the piston 11 is pulled back to the retracted position shown in FIG. 4 in the normal state where there is no pressurized fluid.

Also, the cylinder chamber 8 and the vibration generator 2 shown in FIG.
To the air chamber 18 of the rectangular tubular body 7 through fluid passages 19a and 19b formed in the wall portion of the rectangular tubular body 7 in the axial direction and a fluid passage 19c formed in the radial direction of the front end portion of the rectangular tubular body 7. As shown in FIGS. 1 and 3, a switching valve 20 is provided midway between the fluid passages 19a and 19b in a direction orthogonal to the axial direction of the rectangular tubular body 7.

This switching valve 20 is slidably housed in a valve hole 21,
A valve spool 22 (see FIG. 3) in which one end 22a of the valve is projected to the outside of the apparatus main body 5 and the spool 22 fitted to one of the expanded diameter portions 21a of the valve hole 21 is always attached to the apparatus main body 5 Bias spring 23 that biases outward (downward in FIG. 3)
And annular grooves 24 and 25 provided on the inner wall surface of the valve hole at the outlet side of the fluid passage 19a and the inlet side portion of the fluid passage 19b, and a specific positional relationship from the substantially central portion of the spool 22 to the inner end portion. A through passage that is held orthogonally to the spool
26, 27, 28, a valve passage 29 at the axial portion of the spool meat portion which is bored so as to communicate from the inner end of the spool 22 to the through passage 26 at the central portion, and the fluid pressure in the cylinder chamber 8 is supplied to the supply side. And a ball spring 30 that closes the valve seat 29a of the valve passage 29 and a valve spring 31 that is fitted to the enlarged diameter portion 29b of the valve passage 29 and presses the ball valve 30 against the valve seat 29a. There is. In addition, an O ring 32 ...
Keeps airtightness between.

In the switching valve 20 configured as described above, compressed air is supplied from the air chamber 18 side to the fluid passage 19 in a normal state (a state in which the protruding end 22a of the spool 22 projects as shown in FIG. 3).
When it is supplied to a, the through passage 26 of the spool 22 is
Since it is located in the annular groove 24 portion (see the state of FIG. 3), the pressurized fluid pushes open the ball valve 30 against the elastic force of the valve spring 31 and reaches the valve passage expanded portion 29b. . At this time, since the through passage 28 of the spool 22 is located in the annular groove 25 portion of the valve hole 21 (see the state of FIG. 3), the pressurized fluid is the through passage 28 and the annular groove 25 of the valve hole 21.
Through the fluid passage 19b, and is supplied to the cylinder chamber 8 through the fluid passage 19c at the front end portion of the rectangular tubular body 7.

On the other hand, when the pressurized fluid is filled in the cylinder chamber 8 in this way, even if the pressurized fluid on the air chamber 18 side fluctuates in pressure or the supply of the pressurized fluid is cut off, the ball valve 30 Acts as a check valve, so that the filled state of compressed air is stably maintained. In this state, when the protruding end 22a of the spool 22 is pressed against the elastic force of the biasing spring 23, the spool 22 is pushed into the valve hole 21, while the through passages 26 and 28 of the spool 22 are set in the valve hole. The wall surface is closed, and on the other hand, the through passage 27 moves so that the passage 27 communicates with the annular groove 25 of the valve hole 21. Therefore, the pressure fluid in the cylinder chamber 8 is exhausted to the outside of the apparatus main body 5 through the fluid passages 19c and 19b, the through passage 27, and the end opening of the valve passage expanded portion 29b.

The schematic structure of the vibration generator 2 will be described in more detail as shown in FIGS. 1 and 2. In the drawings, 33 is provided in the rectangular tubular body 7 that is shared with the device body 5 of the clamp device C. A cylinder chamber of the vibrator, 34 is a piston slidably accommodated in the cylinder chamber 33, 35 is a piston rod, and 36 is a piston rod.
Is a hammer for hitting the back surface of the formwork panel 3 for concrete fixed to the tip of the piston rod 35, and it is mounted on the rear end of the square cylinder 7 with a pressure fluid switching valve mechanism 37.
The piston 34 is moved back and forth by controlling the supply and exhaust of the pressure fluid from 18.

Next, the operation of the above embodiment will be described.

When the vibration generator 2 is fixed between the back surface 3'of the concrete filling form panel 3 and the panel supporting horizontal pipe 4 (clamping space S) as shown in FIG. 5, for example, The clamp device C may be operated as described below.

First, while connecting the air hose 39 to the air supply port 18a of the air chamber 18 via the control box 38,
The hand switch cord 40 and the hand switch 41 for connecting and disconnecting the air supply are properly wired.

After that, the crimping leg 6 of the clamp device C is inserted into the sandwiching space S portion from above, and the inner portion of the upper panel supporting horizontal pipe 4 is just pressed against the pressing surface 13 of the crimping leg 6.
Temporarily stop so as to face. At this time, the width in the front and rear of the sandwiching space S is determined by the outer diameter of the vertical pipe 42 for supporting the panel. Therefore, in the present invention, the width in the front-rear direction of the crimping leg 6 substantially corresponds to the width of the space S. At this time, for safety, it is desirable that a chain 43 be stretched between the device main body 5 and the lower end of the crimping leg 6 so as to straddle both upper and lower horizontal pipes 4 for supporting the panel.

In this state, when the hand switch 41 is operated to supply the compressed air to the air chamber 18, in the clamp device C, the compressed air which is the pressure fluid flows through the fluid passage 19a, the switching valve 20, and the fluid passages 19b and 19c into the cylinder. The piston 11 is supplied to the chamber 8 and resists the resilience of the compression spring 17 and moves to the right in FIG. 1 to move the pressing surface 13 to the outer peripheral surface of the upper panel supporting horizontal pipe 4. Press firmly from the left side of the figure. Since the piston 11 employs a so-called free piston type, the vibration generator 2 is provided at various places on the form pile 3
Even when a large number of units are attached, this pressing force is constant, and each device 2 is supported at a fixed pressure of the optimum condition. At this time, since the depression 13a corresponding to the radius of the horizontal pipe 4 is provided on the pressing surface 13, the stability is further improved. On this occasion,
Since the switching valve 20 has a check valve function by the ball valve 30, even if there is a pressure fluctuation on the pressure air supply side as described above, the supporting force of the clamp device C is not affected at all and the fixed state is maintained. Always stable and maintained.

On the other hand, the vibration generator 2 fixed to the mold frame panel 3 as described above strikes the back face 3'of the mold frame panel 3 with the chisel 36 by driving the piston 34. , The formwork panel 3 is repeatedly vibrated, and the concrete 1 filled in the same form is driven without unevenness.

The clumping device C to which the device body 5 is fixed as described above
After that, even if the supply of the compressed air is cut off or the compressed air is used to drive the chisel 36 to cause pressure fluctuation, the air pressure in the cylinder chamber 8 side Is higher than the pressure on the supply side, the check valve mechanism of the switching valve 20 maintains the clamped state as it is. Next, when the clamped state is artificially released, the protruding end 22a of the spool 22 may be pushed against the elastic force of the compression spring 23. Due to this pushing operation, the compressed air in the cylinder chamber 8 is compressed into the fluid passages 19c, 19c.
It is exhausted to the outside through the b, the through passage 27, and the valve passage expanded portion 29b. For this reason, the piston 11 and its pressing surface 13 are returned to their original positions by the elastic restoring force of the compression spring 17 for returning, and the clamp for the panel supporting lateral pipe 4 is released.

Further, as described above, in the present invention, the check valve 20 is provided in the fluid passage communicating with the cylinder chamber 8 so that the fluid passage can be closed when the fluid pressure on the supply side decreases or fluctuates. Therefore, even if a pressure fluctuation of the pressure fluid occurs in the clamp device C, the clamping force is not adversely affected, and it is possible to always fix with a stable pressing force. However, it is possible to fix and support the vibration generator in a very safe place, or to fix many vibration generators such as several or dozens under a uniform condition.

In the above embodiment, the pressing surface 13 of the clamp device C is extruded to the rear of the device main body 5, but the present invention is not limited to this, and a method of extruding to the front may be used. it can. Further, although the compression spring is adopted as the positive return mechanism of the piston 11, this spring action can be replaced with the use of fluid pressure to move the piston in the direction opposite to the direction in which the piston is pressed. In this case, the structures of the cylinder chamber 8, the piston 11 and the switching valve 20 are modified,
It may be used without exhausting from the valve hole 21 when the switching valve 20 is operated.

<Effects of the Invention> The present invention provides a fluid drive including a cylinder chamber 8 and a piston 11 slidably housed in the cylinder chamber 8 and pressing a wall surface in the crimping leg 6 portion provided downward in the apparatus body 5. Since this is a vibration generator equipped with a clamp device C incorporating a mechanism, by driving this clamp device C,
The piston 11 advances and retreats, so that the vibration generator can be easily and firmly fixed to the wall surface with a constant pressure, or can be freely released. Therefore, particularly when several to several tens of vibration generators are simultaneously attached to and detached from the wall surface portion, extremely good workability can be obtained.

[Brief description of drawings]

The drawings show one embodiment of a vibration generator with a clamp device according to the present invention. FIG. 1 shows a vibration generator of the present invention between a rear face of a formwork panel for concrete filling and a pipe for supporting the panel. Second longitudinal side view showing the state of being fixed to
FIG. 3 is a partially cutaway front view showing the front end portion of the clamp device of the vibration generator, FIG. 3 is a sectional view of the clamp device of the vibration generator of the present invention taken along the line AA in FIG. 1, and FIG. FIG. 2 is a vertical cross-sectional view taken along the line BB of FIG. 2 showing a part of the piston return mechanism, and FIG. 5 is a perspective view showing the vibration generator of the present invention fixed on the form panel by a clamp device and a control box of the device. is there. In the figure, 2 ... Vibration generator, 3 ... Form panel, S ... Clamping space, C ... Clamping device, 5 ... Device body, 6 ... Crimping leg, 8 ... Cylinder chamber, 11 ... … Piston, 13 …… Pressing surface,

Claims (1)

[Claims] 1. A vibration generator which is fitted between a wall surface and a member supported in proximity to the wall surface, and which is attached to and detached from the wall surface by the clamp device C, wherein the clamp device C comprises: Crimping leg 6 that is crimped to the wall side
And a cylinder chamber 8 provided in the pressure-bonding leg 6 portion, and housed in the cylinder chamber 8 so as to be slidable in the wall surface direction, and the sliding causes the pressing surface 13 of the pressure-bonding leg 6 to move to the wall surface. When the vibration generator 2 is attached to or detached from the wall surface side, a pressure fluid is introduced into the cylinder chamber 8 to slide the piston 11 on and off. By moving the pressing surface 13 of the pressure-bonding leg 6 by the piston 11, the stroke between the pressure-bonding leg 6 and the pressure surface 13 between the wall surface and a member supported close to the wall surface is adjusted. A vibration generator characterized by being attached and detached.