JPH02285151A - Compacting mechanism of concrete - Google Patents

Abstract

PURPOSE:To raise the setting and moving efficiency of formwork vibrator and reassuring efficiency of level by a method in which an electric sensor for placing level of concrete, a formwork vibrator, and an elevating type holder to attach the sensor and the vibrator to the formwork timbering are provided. CONSTITUTION:A guide part 34 consisting of a pair of rails is coupled with a lateral joist 14 through a hook 44, and a mobile part 36 with wheels 46 is attached to the part 34 in such a way as to enable it vertically move by the rope 48 of a winder 50. An installation base 38 is fixed to a liquid-pressure jack 52 set on the part 36 and attached with a formwork vibrator 26 which is coupled with a joist 14. Electrodes 30 and 32 or microphone and a level sensor such as displacement sensor are provided. Concrete is placed while vibrating a sheathing board 12 by a vibrator 26, and the level is confirmed by the signals of the electrodes 30 and 32. The power required for compacting work can thus be greatly reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a compaction mechanism for concrete poured into formwork.

(Prior Art) Conventionally, in order to form, for example, the wall of a building using cast-in-place concrete, a formwork consisting of a weir plate and supports such as horizontal and vertical beams has been used. A formwork vibrator is used to directly apply vibration to the formwork in order to compact the concrete poured into the formwork.

(Problem to be Solved by the Invention) Concrete compaction work can be carried out, for example, by inserting a formwork vibrator between the weir plate and the horizontal end thick spaced apart from the weir plate. This is done by attaching this to the formwork in advance and operating it after confirming that the concrete has been placed to a level near the horizontal end thickness.

By the way, whether or not the concrete has reached the predetermined pouring level is checked by a worker hitting the formwork with a mallet and checking the feel and sound it makes when hitting, but this method does not Formwork with a large area requires a large number of workers, and formwork with a high height requires confirmation work from a high place. Attachment of the formwork vibrator to the formwork and removal from the formwork must also be carried out by an operator, and this also requires a great deal of effort and time.

Furthermore, in the method for checking the level of concrete placement, insufficient compaction due to misidentification may result in poor placement of concrete, which seriously affects the quality of the compact.

SUMMARY OF THE INVENTION An object of the present invention is to enable efficient confirmation of the concrete placement level and installation and movement of a formwork vibrator for concrete compaction work.

(Means for Solving the Problems, Uses and Effects of the Invention) The present invention comprises a weir plate and a plurality of supports extending in the horizontal direction attached to the weir plate at intervals in the vertical direction. A compaction mechanism for concrete poured into a formwork comprising: a detection means for electrically detecting whether or not the concrete has reached a planned pouring level; a formwork vibrator; a holding means for a frame vibrator; the holding means for the formwork vibrator is attached to the shoring and extends in the vertical direction; and a guide member attached to the guide member and extending in the vertical direction along the guide member. a movable member movable in a direction perpendicular to the weir plate; and an installation base on which the form vibrator is installed, supported by the movable member and movable in a direction perpendicular to the weir plate.

According to the present invention, confirmation of concrete placement using an electrical detection means makes it possible to reduce the amount of labor and time required compared to the conventional method of manually confirming the placement of concrete. Misidentification of the driving position can be eliminated. In addition, the formwork vibrator can be moved vertically and laterally toward the weir plate through means for holding it, so it is possible to change the height of concrete pouring by a worker, which was previously required. This eliminates the need for installation and movement of the formwork vibrator according to the requirements, thereby saving labor and time. Furthermore, according to the present invention, it is possible to eliminate high-place work for confirming the concrete pouring position, installing the formwork vibrator, and moving it in conjunction with changing the installation position.
Further, by arranging an appropriate number of concrete placing mechanisms according to the size of the formwork, it is possible to further reduce the labor and time required for compacting concrete.

If the shoring is placed at a distance from the weir board, a formwork vibrator that can be inserted between the shoring and the weir board, and a mounting base on which the vibrator is installed. and use.

According to this, the form vibrator and its installation base can be locked to the shoring and the weir plate, thereby providing stable support for them.

The detection means includes a power source and a pair of electrodes connected to the power source and arranged at intervals from each other in the vertical direction,
It can be comprised of a pair of electrodes penetrating the weir plate and a detector for detecting whether or not a current flows between the power source and the electrodes. According to this, when the electrode located above comes into contact with concrete, electrical continuity is established between the two electrodes through the concrete, and the current at this time is detected by the sensor, making it possible to know whether the concrete is filled. .

Further, the detection means includes a hitting device supported by the mounting base for hitting the weir board, a microphone for collecting the sound emitted during hitting, and a waveform analysis device connected to the microphone. be able to. According to this, for example, the sound of a plurality of punches at the same level is transmitted to the waveform analysis device via the microphone, and the waveform analysis device displays the maximum amplitude value of the punch sound at each punch. By comparing the maximum amplitude values with each other, the filling status of concrete can be known. The magnitude of the maximum amplitude value decreases as the level of concrete placement approaches the level of striking.

Furthermore, the detection means includes a hitting device for hitting the weir plate supported by the installation base, a displacement transducer that is in the vicinity of the hitting device and comes into contact with the weir plate, and a displacement converter that is in contact with the weir plate in the vicinity of the hitting device. It can be configured with a displacement detection device electrically connected to the converter. According to this, for example, the displacement converter captures the width of the field of view, which is the lateral deflection of the weir plate at the time of each punch accompanying a plurality of punches at the same level, and the amplitude output by the displacement amount detection device is measured. By comparing the maximum values with each other, the filling status of concrete can be known.

(Example) Referring to FIG. 1, a concrete compaction mechanism 10 according to the present invention includes a weir plate 12 and a supporting structure extending in the horizontal direction, which is attached to the weir plate 12 at intervals in the vertical direction. The present invention is applied to a formwork 16 having a plurality of pairs of lateral end pieces 14 that are ergonomically shaped. The formwork 16 further includes a plurality of pairs of vertical end pieces 18 spaced apart from each other in the lateral direction. In the illustrated example, each vertical end piece 18 is in contact with the weir plate 12, and each vertical end piece 18 is in contact with the weir plate 12.
Each horizontal edge 14 is in contact with. Therefore, there is a gap between the weir plate 12 and the horizontal edge 14. Each end shown comprises a tubular member.

Reinforcing bars 20 are placed in a concrete pouring space for forming a wall, for example, which is defined by a pair of weir plates 12 spaced apart from each other. In order to maintain the width dimension of the concrete pouring space, the opposing lateral ends 14 of both formworks are connected by a separator 22.

The concrete compaction mechanism 10 includes a detection means 24 for electrically detecting whether or not the concrete has reached a scheduled pouring level, a formwork vibrator 26, and a formwork vibrator 2.
6 holding means 28.

The detection means 24 includes a power source (not shown), a pair of electrodes 30 and 32 connected to the power source, which are vertically spaced from each other and penetrate through the weir plate 12. It comprises a detector (not shown) for detecting whether or not current flows between the power source and the electrodes 30, 32. The detector can be composed of, for example, an ammeter, a voltmeter, a lamp, etc., and as the level of concrete poured in the concrete pouring space rises, the electrode 3 above C
When both the zero and lower electrodes 32 are in contact with the concrete, the picture electrodes are electrically connected using the concrete as a medium. As a result, if the detector is an ammeter or voltmeter, its pointer will flash, or if it is a lamp, it will light up. It can be known that the concrete has reached a predetermined level by digging the pointer and lighting it up.

As is clear from FIG. 2, the illustrated form vibrator 26 has a substantially L-shaped side profile. The long side portion of the shape has a vertical surface 26a that can come into contact with the weir plate 12, and a slope 26b on the opposite side to the vertical surface.
The distance between 6a and 26b is gradually decreasing. Both sides 26a, 2
The maximum distance between the weir plates 6b and 6b is smaller than the distance between the weir plate 12 and the horizontal edge 14.

The holding means 28 of the form vibrator 26 will be explained with reference to FIGS. 1 to 4. The holding means 28 includes a guide member 34 attached to the horizontal edge 14 and extending in the vertical direction, a movable member 36 attached to the guide member 34 and movable in the vertical direction along the guide member 34, and supported by the movable member 36. and a mounting base 38 movable in a direction perpendicular to the weir plate 12.

The guide member 34 has a ladder shape as a whole, and has a pair of angle-shaped rails 40 that extend vertically at a distance from each other, and a connecting rod 42 that connects both rails. The guide member 34 is fixed to the horizontal end 12 via a pair of hooks 44 fixed to the rail 40, thereby firmly fixing the guide member 34 to the formwork 16.

The length of the guide member is set to, for example, about half the height of the formwork 16, and the guide member is hooked onto the horizontal end with respect to the lower half and the upper half of the formwork 16. Each can be applied. Alternatively, the length of the guide member may be adjustable, as in the illustrated example. In this example, two ladder-like parts 34a and 34b, each having an appropriate length dimension smaller than the height of the formwork 16, are made up of the rail and the connecting rod, and are fixed to one ladder-like part, and the other is fixed to the ladder-like part. The ladder-like portion includes a nest (not shown) into which the receiver can be inserted, and both ladder-like portions 34a.
, 34b and secured to both ladder portions 34a, 34b with suitable fasteners (not shown). In this example, a pair of downward hooks 44 are fixed to the upper ladder-shaped portion 34a, and a pair of upward hooks 44 are fixed to the lower ladder-shaped portion 34b.

The movable member 36 includes a block-shaped main body 36a facing the guide member 34, an arm portion 36b continuous to the main body 36a,
A pair of upper and lower wheels 46 that are attached to the main body 36a and partially surround each rail 40 of the guide member and can be moved around the rails 40 of the guide member.
and has.

Furthermore, when the movable member 36 is moved up and down, the arm portion 36b and the horizontal end 14 are arranged so that the formwork vibrator 26 and the installation stand 38 on which it is installed do not collide with the lateral end 14.
Its dimensions are determined so that it can be secured between 4 and 4.

The movable member 36 can be moved up and down via a drive device. The illustrated drive device includes a lobe 48 having one end connected to the body 36a of the movable member 36, and a guide member 34.
A rope winder 5 has a winding drum (not shown) that is cantilevered at the upper end and connected to the other end of the lobe 48.
Consists of 0. According to this drive device, the winding drum of the winder 50 is rotated in one direction and the lobe 48 is wound around the winding drum. By this, the movable member 36 can be raised, and by rotating the winding drum in the opposite direction,
It can be lowered. The winder 150 is fixed to the main body 36a, and one end and the other end of the lobe 48 are connected to the winder 50.
and may be connected to the upper end of the guide member 34, respectively.

As shown in FIG. 2, the installation base 38 has an inner surface extending in a crank shape that can be brought into contact with the slope 26b of the formwork vibrator 26, and a portion of the upper horizontal surface 26c and the bottom surface 26d connected thereto. It consists of a seating part 38a having an outer surface opposite to an inner surface, a pair of side plate parts 38b continuous to both sides of the seating part, and a rising part 38c continuous to the upper part of the seating part 38a.

A portion of the lower portion of the seating portion 38a is connected to the weir plate 12 and the horizontal edge 14.
It has dimensions that allow it to be inserted between the

The rising portion 38c of the installation base 38 faces the arm portion 36b of the movable member 36, and both 38c and 36b are connected by a horizontally extending hydraulic jack 52.
is supported by the movable member 36 via a hydraulic jack 52.

In the illustrated example, one end of a pair of rod-shaped guides 54 is movably passed through the arm portion 36b through which the cylinder of the hydraulic jack 52 is fixed, and the rod of the hydraulic jack 52 and the guide member. The other end of 54 is fixed to the rising portion 38c of the installation base 38.

By extending the hydraulic jack 52, the installation stand 38 and the rigidly held formwork camera 26 are moved to the weir plate 12.
The formwork vibrator 26 can be moved closer to the weir plate 12.

After bringing the form camera 26 close to the weir plate, the movable member 36 is lowered, so that the form vibrator 26 and the installation stand 38 can be placed between the weir plate 12 and the horizontal edge 14. The movable member 36 is lowered by the rising portion 38c of the installation base 38.
Continue until it locks onto the horizontal end piece 14. Thereby, the installation base 38 can be seated on the horizontal edge 14 to increase stability in the air. Thereafter, the concrete filling status is confirmed by the detection means 24, and the form vibrator 26 is activated to vibrate the form and compact the concrete. At this time, it is desirable that the formwork vibrator 26 is pressed against the weir plate 12 in order to transmit vibrations more effectively to the formwork 16.

After plastering, the movable member 36 is pulled up and the installation stand 38 and the formwork vibrator 26 are removed from between the weir plate 12 and the horizontal edge 14. Next, by contracting the hydraulic jack 52, the installation base 38 and the formwork vibrator 26 are moved closer to the arm 36b of the movable member than the horizontal end 14. The installation stand 38 and the formwork camera 26 are then pulled up for further upward vibration.

By the way, the horizontal end thick 14 is in contact with the weir plate 12 and the horizontal end thick 14 is in contact with the weir plate 12.
There are times when the formwork is assembled so that the vertical edge 18 is in contact with. In this case, since there is no gap between the horizontal edge 14 and the weir plate 12, the installation stand 38 and the horizontal edge 1 of the form vibrator 26 cannot be placed between them. Therefore,
The formwork is vibrated while the bottom of the installation stand 38 is placed on the horizontal end carpenter and the formwork vibrator 26 is pressed against the weir plate 12. In both this example and the illustrated example, the formwork camera 26 is fixed between the upper and lower two pairs of horizontal end pieces 14, and one movement is applied with the formwork roller 26 pressed against the weir plate 12. This allows the concrete to be compacted.

1f8 and FIG. 1, it is desirable that the lower TL pole 32, which forms part of the detection means, be brought into contact with the reinforcing bar 20 in order to improve the conductivity between the two electrodes. Also, as shown in FIG. 2, the upper electrode 30 can be mounted on a mounting base 38.

In the illustrated example, a cylinder of a hydraulic jack 56 directed toward the weir plate 12 is fixed to the rising portion 38c of the installation base, and a pole 30 is fixed to the tip of the piston rod. According to this, the electrode 30 is pierced into the weir plate 12 by the extension operation of the hydraulic jack 56 prior to the addition.

As shown in FIG. 5, both picture electrodes 30, 32 can be secured to the piston rod of a hydraulic jack 56, and as shown in FIG.
The electrode 30 can be attached similarly to the electrode 30 via a hydraulic jack 58 to the bottom of the electrode 30 .

Further, as shown in FIGS. 7 and 8, the detection means includes a hitting device 60 for hitting the weir plate 12 and a microphone 62 for collecting the sound emitted during hitting, which is supported on the installation stand 3. and a waveform analysis device (not shown) electrically connected to the microphone 62.

The beating device 60 includes a box 64 located above and spaced from the form vibrator 26, and a pan 768 disposed inside the box 64, extending laterally and rotatably supported by the box 64. It consists of a pan 768 fixed to the shaft 66 and a motor 69 connected to the pan to apply rotational force to the shaft 66. A microphone 62 is attached to the top of the box 64. The hammer 68 has a head 68a that protrudes upward from an opening 64a provided at the top of the box 64, and a
A body portion 68b connected to the body portion and a balancer portion 68 connected to the body portion.
By operating the motor 69, the hammer 68 can be rotated together with the shaft 66, and the weir plate 12 can be hit with the head 68a of the hammer 68. The motor 69 is a hammer 68
The switch is turned off when the ship hits the weir plate 12 and sails directly. Due to stiffness,
After striking, the hammer 68 rotates in the opposite direction due to the action of the balancer portion 68c, extends inside the box 64 parallel to the shaft 66, and reaches 216.
The body 68 is attached to a stopper 70 made of a rod member fixed to the
b hits and the rotational movement is stopped.

The above-mentioned beating may be repeated, for example, several times at the same level at intervals of time. The sound generated by the beating is captured by the microphone 62, and its electrical signal is sent to the waveform analysis device. The waveform analysis device outputs and displays a waveform of the generated sound from the electrical signal. The maximum amplitude of the output waveform is larger when the concrete placement level is at a level below the punching position, and the maximum amplitude value gradually decreases as the concrete placement level approaches the concrete placement level. From this, by comparing the maximum amplitudes of the waveforms during multiple strikes, it can be determined whether or not the concrete has been filled to the level at or near the striking level.

Also, as shown in FIGS. 9 and 10, instead of the microphone and waveform analysis device, a displacement transducer 72. and a displacement amount detection device (not shown) electrically connected to the displacement transducer. The displacement converter 72 has a contact that follows the vibration, that is, the lateral displacement, of the weir plate 12 due to the blow, converts the momentum of the contact into an electrical signal such as a voltage, and converts the electrical signal into an electric signal such as a voltage. Send to amount detection device. The displacement amount detecting device displays the maximum value, that is, the maximum amplitude value among the 12 electric signals detected. In this example as well, the maximum amplitude value is greater when the concrete placement level is at a level other than these levels than when it is at or near the location of the punch. Therefore, in the same way as explained in the example of FIGS. 7 and 8, by comparing the maximum amplitude values in multiple blows,
The filling status of concrete can be grasped.

In either example, the box 64 includes a bracket 76 fixed to the rising portion 38c of the installation base 38, and a hydraulic jack 7 supported by the bracket and directed toward the weir plate 12.
It can be fixed to the tip of 8. hydraulic jack 78
By extending and contracting the box, the position of the box, that is, the striking device 60, relative to the weir plate 12 can be finely adjusted. Additionally, in the illustrated example, a sensor 80 provides a signal when the striking device 60 is in the proper position relative to the weir plate 12.
is located.

By the way, as the formwork vibrator 26 is lowered as the formwork vibrator 26 moves, the formwork vibrator 26 comes into close contact between the weir plate 12 and the installation stand 3, and the installation stand 38 is placed next to the weir plate 12. It may be difficult to pull it out from between the end piece 14. For such a case, it is desirable to arrange a hydraulic jack 82 at the bottom of the installation stand on the third day, passing through it and having one end fixed. By extending the hydraulic jack 82, the form vibrator 26 can be raised relative to the installation base 38. Further, in order to prevent the formwork vibrator 26 from falling during movement, it is desirable to fix the formwork vibrator 26 to the installation stand 38 so that it can only move in the vertical direction with respect to the installation stand 38. . In the illustrated example, the formwork vibrator 2
6 are provided with grooves 84 extending in the vertical direction, and grooves 84 are provided on both side plates 38b of the installation base, respectively.
Inverted U-shaped brackets 86 are attached corresponding to the brackets 84, and the tips of bolts 88 that thread through each bracket 86 are engaged with the brackets 84.

Furthermore, a sensor 90 such as a limit switch can be attached to confirm the relative position of the movable member 36 with respect to the lateral end 14.

[Brief explanation of drawings]

Fig. 1 is a schematic first view of the concrete compaction mechanism of the present invention attached to the formwork, and Figs. 2, 3, and 4 are the right side showing an enlarged part of the concrete compaction mechanism. 5 and 6 are right side views showing a part of another example of the detection means, and FIGS. 7 and 8 are part of still another example of the detection means. FIGS. 9 and 10 are a right side view and a plan view showing a part of yet another example of the detection means. 10: Concrete compaction mechanism, 12: Weir plate, 14: Horizontal thick, 16: Formwork,
24: Detection means, 26: Formwork vibrator, 28
: Holding means, 30.32:? g pole, 34: guide member, 36: movable member, 38: installation stand, 48: lobe, 50: lobe winder, 52.56: hydraulic jack, 60: striking device, 62: microphone, 72: displacement conversion vessel. Agent Patent Attorney Nobuyuki Matsunaga

Claims (5)

[Claims] (1) A compaction mechanism for concrete poured into a formwork having a weir plate and a plurality of laterally extending shorings attached to the weir plate at intervals in the vertical direction, the mechanism comprising: The holding means for the formwork vibrator comprises a detection means for electrically detecting whether or not concrete has reached a planned pouring level, a formwork vibrator, and a holding means for the formwork vibrator. a guide member attached to the shoring and extending in the vertical direction; and a guide member attached to the guide member,
a movable member that is movable in the vertical direction along the guide member;
A concrete compaction mechanism comprising: a stand on which the formwork vibrator is installed, which is supported by the movable member and is movable in a direction perpendicular to the weir plate. (2) Concrete poured into a formwork having a weir plate and a plurality of laterally extending supports attached to the weir plate at intervals from the weir plate and vertically spaced from each other. The compaction mechanism includes a detection means for electrically detecting whether or not the concrete has reached a planned pouring level, and a size that can be arranged between the weir board and the shoring. and a holding means for the formwork vibrator, the holding means for the formwork vibrator being attached to the shoring and extending in the vertical direction, and a guide member attached to the guide member. , a movable member movable up and down along the guide member, and a stand on which the form vibrator is installed, supported by the movable member and movable in a direction perpendicular to the weir plate; A concrete compaction mechanism comprising an installation stand that can be inserted between a weir plate and the shoring. (3) The detection means includes a power source, a pair of electrodes connected to the power source, arranged vertically at intervals, and penetrating the weir plate, and the power source and the electrodes. 3. The concrete compaction mechanism according to claim 1, further comprising a detector for detecting whether or not a current flows between the concrete compaction mechanism and the concrete compaction mechanism. (4) The detection means includes a hitting device supported by the mounting base for hitting the weir board, a microphone for collecting the sound emitted during hitting, and a waveform analysis device connected to the microphone. , A concrete compaction mechanism according to claim 1 or 2. (5) The detection means includes a hitting device for hitting the weir plate supported by the installation base, a displacement transducer that is in the vicinity of the hitting device and comes into contact with the weir plate, and a displacement transducer that is in contact with the weir plate, and The concrete compaction mechanism according to claim 1 or 2, comprising a displacement detection device connected to a converter.