JP2742762B2 - Bar-shaped vibrator insertion / extraction device for concrete compaction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rod-shaped vibrator insertion / extraction apparatus used for compaction of poured concrete, mainly for construction of floors, beams, columns, walls and the like at a construction site.

[0002]

2. Description of the Related Art Conventionally, a rod-shaped vibrator has been used for compacting concrete cast at a construction site. In this rod-shaped vibrator, a rod-shaped vibrator is fixed to the tip of a vibrator cylinder, and the vibrator is inserted into cast concrete to a required depth to compact the concrete by vibration.

[0003] In using the rod-shaped vibrator, conventionally, insertion and withdrawal operations into concrete and movement to a desired position have been performed manually by an operator.

[0004] Such a conventional compacting operation involves manually moving a rod-shaped vibrator to which a power air pipe or a power cable is connected to a required position, and thus requires a large amount of manpower and is required to enter concrete. Has to be performed manually, and requires work on a site with poor scaffolding, resulting in a problem of heavy labor.

Furthermore, the insertion depth and the vibration time of the rod-shaped vibrator often depend on the intuition of the operator, and appropriate compaction requires skill and the fluidity of the poured concrete is high. However, there has been a problem that the air tends to be distracted, sufficient deaeration is not performed, and the strength of the concrete after solidification tends to vary.

In order to solve such a problem, the present inventors have made the traveling vehicle body support a vibrator insertion / extraction device via a manipulator, and have the traveling vehicle body and the manipulator perform the horizontal moving operation of the rod-shaped vibrator. We have developed a rod-shaped vibrator operating device that allows insertion and removal of the rod-shaped vibrator by using a vibrator insertion / extraction device that uses a feed roller.

[0007]

In the vibrator insertion / extraction device as described above, a bar-shaped vibrator is sandwiched between a pair of left and right feed rollers, and the bar-shaped vibrator is inserted into concrete and pulled out by rotating. There is a problem that the concrete adhered to the vibrator adheres to the feed roller and the components in the vicinity of the feed roller, and this solidifies and hinders the movement of the device.

SUMMARY OF THE INVENTION In view of the above problems, the present invention relates to a vibrator insertion / removal device capable of completely scraping off attached concrete before reaching a feed roller when a vibrator inserted into concrete is lifted. It was made for the purpose of providing.

[0009]

SUMMARY OF THE INVENTION In order to solve the problems described above and to achieve the intended purpose, a feature of the present invention is to provide a support frame movably supported at a desired position and a support frame mounted on the support frame. A feed roller that is suspended and pivots across the rod-shaped vibrator, a downward fixed scraper that is located below the feed roller and elastically presses and surrounds the periphery of the rod-shaped vibrator; And a rotating scraper for scraping downward while pressing the surface of the bar-shaped vibrator.

[0010]

According to the rod-shaped vibrator insertion / extraction device of the present invention, the rod-shaped vibrator is inserted into the concrete by the rotation of the feed roller, vibrates to compact the concrete, and then the feed roller is rotated in reverse to raise the rod-shaped vibrator. Can be At this time, most of the highly viscous concrete adhering to the rod-shaped vibrator is scraped off by the rotating scraper, and then almost completely scraped off by the fixed scraper.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 shows a schematic configuration of a vibrator operating device using a rod-shaped vibrator insertion / removal device according to the present invention. In FIG. 1, reference numeral 1 denotes a traveling body, and 2 denotes rubber wheels. A manipulator 3 is mounted on the vehicle body 1.
The manipulator 3 is also called a balancer, and has a first joint 5 and a first joint 5 that are supported on the upper end of a column 4 and a column 4 erected on the vehicle body 1 so as to be pivotable in the horizontal direction. 5, a first arm 6 rotatably supported up and down, and a second joint 7
And a second arm 8 that is rotatably supported through the second arm 8. A vibrator insertion / extraction device 9 is supported at the tip of the second arm 8. This manipulator 3
A commercially available product can be used, and the vibrator insertion / extraction device 9 can be applied to the manipulator 3 by applying a slight external force without feeling the weight of the operator or by operating the controller.
Can be moved to a desired horizontal position and height by the pneumatic control device provided in.

The rod-shaped vibrator 10 is vertically moved by a vibrator insertion / extraction device 9 supported by the manipulator 3 in the vertical direction. The rod-shaped vibrator 10 is a vibrator cylinder 11 made of a rod-shaped metal cylinder.
A rod-shaped electric vibrator 12 is fixed to the lower end of the vehicle, and a power cable 13 to the vibrator 12 is passed from a take-up reel 14 on the vehicle body 1 through guide rollers 15 and 16 on the joint fittings 5 and 7. It is introduced at the upper end of the vibrator cylinder 11. The take-up reel 14 is configured such that the power cable 13 is wound and unwound according to the vertical movement of the rod-shaped vibrator 10.

The rod-shaped vibrator 10 may be a rod-shaped vibrator that is operated by air pressure fixed to the vibrator cylinder 11. In this case, a power cable having a hose for supplying power air is used. Is done.

As shown in FIGS. 2 and 3, the vibrator insertion / extraction device 9 has a box-shaped support frame 20 which is open at the top and bottom, and is supported by the lower end of the second arm 8. A pair of upper and lower feed rollers 21,
21 and 22, 22 are rotatably mounted on each other, and gears 23, 2 meshed with each other on the rotation shaft for each pair.
3 and 24, 24 are fixed. The rotation shaft 21a of one of the upper feed rollers is driven by a drive motor 25, and an insertion length detector 26 composed of a rotary encoder is installed at the other end to detect the feed length. It has become. Also, a rotation shaft 21a of the feed roller 21 and a feed roller 22 below the rotation shaft 21a.
V-pulleys 27, 27 are fixed to the rotary shaft 22a, and a V-belt 28 is wrapped around both pulleys so that all pairs of feed rollers are rotated at a constant speed.

A fixed scraper 30 and a rotary scraper 31 are provided below the lower feed rollers 22,22. As shown in FIGS. 4 and 5, the fixed scraper 30 is supported by an opening edge of a fixed frame 32 fixed to the support frame 20, and the fixed scraper 30 is entirely formed into a cylindrical shape with a rubber-like elastic material. Two ridges 33, 33 are integrally formed on the outer periphery of the body in parallel with each other, and the fixed frame 3 is inserted into a concave groove between the ridges 33, 33.
It is supported by fitting the two opening edges 34.

At the lower end of the fixed scraper 30, a wedge-shaped scraping claw 35 having a downward cross section is formed integrally with the entire periphery. The tip of the scraping claw 35 is inclined toward the center of the cylindrical shape, the inner diameter is formed slightly smaller than the outer diameter of the rod-shaped vibrator 10, and the rod-shaped vibrator 10 is inserted into the rod-shaped vibrator 10 by its own elasticity. The outer periphery of 10 is tightened.

On the outer periphery of the scraping claw 35, a fastening belt 36 is provided.
Is wound, and the tightening force by the belt 36 is adjusted by adjusting the adjusting screw 37 penetrating both ends 36a and 36b of the belt. By tightening the outer periphery of the scraping claw 35 with the belt 36, the pressing force of the claw 35 against the rod-shaped vibrator 10 by the claw 35 is adjusted. When the pressure decreases, the adjusting screw 37 can be tightened to increase the pressing force.

The rotary scraper 31 is formed of a rubber-like elastic material and has a pair of rotary shafts 40, 40 as shown in FIG.
Is configured to be fixed to the outer periphery. Each of the rotary scrapers 31 has four rotary blades 41 projecting radially about a rotary shaft 40.
Is formed with a U-shaped concave notch 42. This concave notch 4
The radius of curvature r ₁ of the semicircular portion 42a of the second inner portion稍小fence than the radius r ₂ of the rod-like vibrator 10, as shown in FIG. 6,
A parallel edge 4 of the concave hole 42 following the semicircular portion 42a.
2b, interval 42b is twice the radius of curvature r _1. Thus, by scraping the outer periphery of the rod-shaped vibrator 10 at the inner edge of the concave portion 42, the concrete is scraped while the periphery of the rod-shaped vibrator 10 is elastically sandwiched.

The rotary shafts 4 of the rotary scrapers 31, 31
The gears 0 and 40 are rotatably mounted on the support frame 20, and the rotating shafts 40 and 40 have gears 4 meshing with each other.
3, 43 are fixed, and one of the rotating shafts 40 is driven to rotate by an electric motor 44 for rotating scrapers, and is rotated in a direction in which the side between the two rotating scrapers 30, 30 faces downward. In addition, the electric motor 44 is automatically operated only when the bar-shaped vibrator 10 is pulled up.

A height detector 50 composed of an ultrasonic distance meter is fixed downward to the support frame 20 of the vibrator insertion / extraction device 9 configured as described above, whereby the height of the support frame 20 is measured. It is supposed to be. Further, an operation handle 51 is attached to the support frame 20. 52 is a vibrator operation ON / OFF switch attached to the handle 51, and 53 is a controller. The operation panel 54 of the controller 53 includes a traveling vehicle body control unit 55, a manipulator control unit 56, and a vibrator control 57.

As shown in FIG. 7, the traveling vehicle control unit 55 includes a forward / reverse switch 60 for selecting forward, backward and stop, and a speed switching lever 6 for switching the traveling speed between low and high speeds.
1. There is a turning lever 62 for selecting a left or right turning direction of the vehicle body from a neutral position.

The manipulator control unit 56 includes:
There is a changeover switch 65 for use as a crane and for use as a balancer, and a movement control lever 66 for moving the vibrator insertion / extraction device 9 supported on the tip of the second arm 8 up, down, left and right.

Further, the vibrator control unit 57 has a vibration ON for turning ON / OFF the vibration of the vibrator.
There are an insertion / removal selection lever 71 for selecting insertion / removal of the rod-shaped vibrator 10 by the OFF switch 70 and the vibrator insertion / extraction device 9, an insertion depth setting dial 72, a vibrator operation time setting dial 73, and an insertion depth display 74. The insertion depth is determined by the vibrator insertion / extraction device 9.
The insertion depth from the concrete surface is automatically calculated and displayed based on the height information from the height detector 50 provided on the support frame 20 and the sending length information from the insertion length detector 26 of the feed roller shaft 21. When it is inserted into the dial 72 to the set depth, the insertion operation by the vibrator insertion / extraction device 9 is stopped, and by operating the switch 52, the vibrator 12 is operated.
When the time set by the vibrator operation time setting dial 73 has been reached, an alarm sound to notify the user of this is issued.

[0025]

As described above, the bar vibrator insertion / removal device for compacting concrete according to the present invention is one in which the bar vibrator is inserted and withdrawn by a feed roller.
On the lower side of the feed roller, by providing a fixed scraper that presses and surrounds the periphery of the rod-shaped vibrator and a rotating scraper that scrapes downward while pressing around the rod-shaped vibrator, the rod-shaped vibrator is pulled up after compaction work. The concrete having a high degree of viscosity which adheres and rises is completely removed, so that the concrete does not adhere to the feed roller and members near the feed roller and hinder the function.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic configuration of a vibrator operating device using a vibrator insertion / extraction device of the present invention.

FIG. 2 is a partial cross-sectional plan view of the vibrator insertion / extraction device according to the first embodiment.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view showing a scraper portion of the vibrator insertion / extraction device.

FIG. 5 is a sectional view showing a fixing scraper mounting device according to the first embodiment;

FIG. 6 is a partial plan view showing the shape of the rotary scraper according to the first embodiment.

FIG. 7 is a front view of a controller of the device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running vehicle body 2 Rubber wheel 3 Manipulator 4 Prop 5 First joint fitting 6 First arm 7 Second joint fitting 8 Second arm 9 Vibrator insertion / extraction device 10 Rod-shaped vibrator 11 Vibrator cylinder 12 Vibrator 13 Power cable 14 Winding reel 15 , 16 Guide roller 20 Support frame 21, 22 Feed roller 21a, 22a Rotating shaft 23, 24 Gear 25 Electric motor 26 Insertion length detector 27 V pulley 28 V belt 30 Fixed scraper 31 Rotary scraper 32 Fixed frame 33 Convex ridge 34 Opening Edge 35 Scraping claw 36 Tightening belt 37 Adjusting screw 40 Rotating shaft 41 Rotating blade 42 Depressed portion 42a Semicircular portion 42b Parallel edge 50 Height detector 51 Operating handle 52 Vibrator operation ON / OFF switch 53 Controller 54 Operation panel 55 Traveling vehicle body control unit 56 Manipulator control unit 57 Vibrator control unit 60 Forward / backward movement switch 61 Speed switching lever 62 Swivel lever 65 Switching switch 66 Movement control lever 70 Vibration ON / OFF switch 71 Insertion / extraction selection lever 72 Insertion depth setting Dial 73 Vibrator operation time setting dial 74 Insertion depth indicator

Claims (1)

(57) [Claims] 1. A support frame movably supported at a desired position, a feed roller traversing the support frame and rotating with a bar-shaped vibrator interposed therebetween, and a lower portion of the rod-shaped vibrator below the feed roller. A concrete compacting rod vibrator comprising: a downwardly directed fixed scraper that elastically presses and surrounds the periphery thereof; and a rotating scraper below the fixed scraper and scraping downward while pressing the surface of the rod-shaped vibrator. Insertion / extraction device.