JPH08232475A - Concrete compactor and method - Google Patents

Abstract

PURPOSE: To aim at the promotion of facilitation and secureness on tamping operations by delivering a flexible hose, supporting the base end side of an articulated arm free of turning and having a rodlike vibrator along this arm, and performing a retracting motion. CONSTITUTION: A truck 1 is traveled, shifting it nearby a concrete placing spot, and the tip of an articulated arm 4 is operated by hand, shifting it to the required horizontal position and height. At that time, a tip side of the articulated arm 4 is supported by each spring of two elastic expansion machines 9a and 9b being set up as straddling each of jointed arms 4a and 4b, whereby balancing it in this way, and it shifts in all directions with small operating force. In succession, the tip of the articulated arm 4 is shifted upward a tamping position, and in a state that a vibrator 16 is hung down on this tamping position, a winch 6 is operated in a direction of delivering a wire rope. In addition, a flexible hose 13 is delivered together with a cable 17 by dead weight of this vibrator 16, and then this vibrator 16 is inserted into concrete.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for compacting concrete, which is used for building floors, beams, columns, walls, etc., mainly at a construction site.

[0002]

2. Description of the Related Art Conventionally, a bar-shaped vibrator has been used for compacting concrete cast at a construction site. In this vibrator, a rod-shaped vibrator is fixed to the end of a cylindrical casing, and the vibrator is compacted by vibration by inserting the vibrator into the cast concrete to a required depth.

[0003]

In the compaction work by the vibrator, an operator grips the tip of the vibrator by hand, inserts it into concrete for compaction, and compacts it for a certain time (about 5 to 10 seconds at one place). After that, the work is repeated by pulling it out, then changing the compaction position and inserting it into concrete.

Further, in concrete compaction of beams, floors, etc., the vibrator insertion depth is shallow, but in the case of columns, walls, etc., the vibrator is lowered to several meters below the construction floor. These operations are work on the bar arrangement, and the footing is unstable and unstable, and since it is a long time (usually 8 hours / day), the workers are tired and the quality of the concrete is affected. there were.

Further, at least two workers are required for each vibrator, and one worker has a flexible hose and a power supply for the vibrator so that the worker holding the vibrator at the tip can easily perform the compacting work. I'm working on the cable for the cable. In normal concrete pouring, two to three vibrators are used for one concrete tip. For this reason, there is a problem that the work place becomes complicated with hoses and many personnel are required.

In view of the above-mentioned conventional problems, the present invention can perform a proper compaction work without requiring a lot of manpower and a harsh work, and a flexible hose and a power cable can be routed around. It is an object of the present invention to provide a concrete compaction apparatus and method that can reduce the load.

[0007]

The features of the present invention for solving the above-mentioned conventional problems and achieving the intended purpose are as follows.
A self-propelled trolley, a multi-joint arm that has a base end portion rotatably supported on the trolley, and is bendable for each joint, a cable that can be extended and retracted along the multi-joint arm, and a cable A concrete compaction device comprising a concrete compaction vibrator supported at a tip and a cable insertion / extraction drive mechanism for feeding and pulling the cable. In addition, a cable take-up reel is mounted on the trolley, and the vibrator is inserted into and extracted from the concrete by feeding and retracting the cable by the cable insertion and extraction drive mechanism consisting of a winch. An elastic machine that supports the weight on the tip side should be provided so that each joint can be bent by an external force in the vertical direction. Further, it is preferable to mount a generator for the vibrator power source on the carriage.

A feature of the method of the present invention is that a self-propelled carriage, a multi-joint arm that has a base end portion rotatably supported on the carriage and is bendable at each joint, and the multi-joint arm A trolley using a concrete compaction device comprising a cable that can be drawn and drawn along the cable, a vibrator for concrete compaction supported at the tip of the cable, and a cable insertion / extraction drive mechanism that draws and draws the cable. While self-propelled, adjust the bending direction of the horizontal direction and tip position of the multi-joint arm, direct the tip to the desired compaction position, and adjust the cable feeding length by the cable insertion / extraction mechanism. It is to insert and pull out the vibrator into concrete.

[0009]

In the concrete compaction device of the present invention, the bogie can be moved to a desired position by self-propelling, and the articulated arm bends and extends each joint to direct the tip to a desired compaction position. For example, a cable using a winch. By moving the cable by the insertion / extraction drive device, the vibrator at the tip is inserted into the concrete, and the concrete is compacted by the vibration of the vibrator.

Further, each joint of the multi-joint arm is provided with an elastic machine for supporting only the weight on the distal end side, so that the joint can move up and down by a small vertical force.

Further, by mounting the generator for the power source on the dolly, it is not necessary to lay out a power cable or a flexible hose.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 is a self-propelled trolley, which can be operated by an operator by remote control as required.

Although not shown in detail in the drawing, a steering device is provided so that the steering device can move in a desired direction. A vertically oriented support shaft 2 is erected on a trolley 1, and a swivel base 3 is rotatably supported on the upper end of the fulcrum. The swivel base 3 is provided with an articulated arm 4, and a cable insertion / extraction drive device including a cable winding reel 5 and a winch 6 is fixed.

The articulated arm 4 is a first arm 4a on the base end side.
And a second arm 4b on the tip side, and the base end of the first arm 4a is supported by the swivel base 3 so as to be rotatable in the up-down direction about the horizontal shaft 7a, and thus the first joint. 8a, and the base end side of the second arm 4b is supported at the tip of the first arm 4a rotatably in the vertical direction about the horizontal shaft 7b to form a second joint 8b.

Between the swivel base 3 and the first arm 4a, there is a first elastic stretcher 9a located below the joint 8a and across the joint 8a, and between the first arm 4a and the second arm 4b. Is provided with a second elastic expander 9b which is located below the joint 8b and straddles it. These elastic stretchers 9a, 9
Each of b is composed of a cylinder 10, a telescopic shaft 11 having one end side inserted thereinto so as to be freely inserted and removed, and a coil spring 12 which is inserted into the cylinder 10 and biases the telescopic shaft 11 toward the pushing direction side. .

A coil spring having a strength capable of supporting the entire weight including a vibrator and a flexible hose, which will be described later, on the arm tip side from the first joint 8a and stopping at an arbitrary angle is used for the first elastic expander 9a. , Second again
The elastic stretcher 9b uses a coil spring having a strength capable of supporting the same total weight from the second joint 8b to the arm tip side and stopping at an arbitrary angle.

On each of the first and second arms 4a and 4b,
A plurality of upper and lower paired guide rollers 14 for guiding the flexible hose 13 slidably in the axial direction are provided. The flexible hose 13 has a cylindrical casing 15 connected to its tip and a vibrator 16 connected to its tip.

A power supply cable 17 communicating with a vibrator 16 is inserted into the flexible hose 13, and the base end side thereof is wound around the cable winding reel 5 together with the cable. The reel 5 is equipped with a rotary contactor (not shown) to electrically connect the cable 17 and the power source side.

The tip end of a wire rope 19 is fixed to the rear end of the flexible hose 13 via a fixing band 18, and the winch 6 takes up and rewinds the wire rope 19. Further, the cable take-up reel 5 automatically winds the slack of the cable 17 when the slack is generated, and winds the cable 17 by applying a certain tension or more to the cable 17 so that the vibrator 16 can freely descend. It is supposed to be returned.

When the wire rope 19 is unwound (unrolled) by the winch 6, the vibrator 16 is lowered by its own weight, and when it is wound in the opposite direction, the flexible hose 13 is pulled and the vibrator 16 is pulled out. There is.

A high frequency generator 20 driven by an engine is mounted on the trolley 1. The generator 20
As a power source and the vibrator 1 through the cable described above.
Power is supplied to 6.

If engine noise is a problem, electric power may be externally supplied by a cable.

As shown in FIG. 1, the concrete compacting apparatus constructed as described above allows the trolley 1 to move by itself so as to move it near a concrete placing point where compaction is required, and the articulated arm 4 is manually moved. Operate the tip to move it to the required horizontal position and height. At this time, since the tip end side of the multi-joint arm 4 is supported and balanced by the springs of the elastic expanders 9a and 9b arranged so as to straddle the respective joint arms 4a and 4b, the tip end side is moved vertically and horizontally by a small operating force. it can.

In this way, the tip of the articulated arm is moved above the compaction position, and the vibrator 1 is placed on the compaction position.
By operating the winch 6 in the wire rope payout direction while the cable 6 is suspended, the flexible hose 1 together with the cable 17 is caused by the weight of the vibrator 16 by itself.
3 is paid out, and the vibrator 16 is inserted into the concrete.

[0026]

As described above, in the concrete compacting device of the present invention, the cable mounted on the self-propelled truck is fed out along the multi-joint arm supported by the same truck. It is necessary to route the cable and the flexible hose over a wide range like the above, and the number of people required for the work is reduced.

Further, since the vibrator is supported and inserted / removed by the machine, the operator can operate it with a small amount of labor, and as a result, it is possible to perform reliable compaction even if the work is performed for a long time. Therefore, the quality of concrete can be maintained.

Further, by mounting a generator for a vibrator power source on the carriage, it is possible to operate other vibrators by using this generator as a power source in addition to the vibrator mounted on the articulated arm. The shorter cable runs make it easier.

[Brief description of drawings]

FIG. 1 is a side view of an example of a device according to the present invention.

[Explanation of symbols]

 1 bogie 2 spindle 3 swivel base 4 multi-joint arm 4a first arm 4b on the base end side 2nd arm on the tip side 5 cable take-up reel 6 winches 7a, 7b horizontal shaft 8a first joint 8b second joint 9a First elastic stretcher 9b Second elastic stretcher 10 Cylinder 11 Stretching shaft 12 Coil spring 13 Flexible hose 14 Guide roller 15 Cylindrical casing 16 Vibrator 17 Cable 18 Fixing band 19 Wire rope 20 High frequency generator

Claims (5)

[Claims] 1. A self-propelled trolley, a multi-joint arm that has a base end portion rotatably supported on the trolley, and is bendable for each joint, and a cable that can be extended and retracted along the multi-joint arm. A concrete compaction device comprising: a vibrator for concrete compaction supported at the tip of the cable; and a cable insertion / extraction drive mechanism for feeding and retracting the cable. 2. The concrete compaction device according to claim 1, wherein a cable winding reel is mounted on a trolley, and the vibrator is inserted into and extracted from the concrete by feeding and retracting the cable by a cable insertion / extraction drive mechanism including a winch. 3. The articulated arm according to claim 1 or 2, wherein each joint is provided with an elastic machine for supporting the weight on the tip side of the joint, and bent by each external force in the vertical direction. Concrete compaction device. 4. The concrete compaction device according to claim 1, wherein a generator for a vibrator power source is mounted on a truck. 5. A self-propelled trolley, a multi-joint arm that has a base end portion rotatably supported on the trolley, and is bendable for each joint, and a cable that can be extended and retracted along the multi-joint arm. And a concrete compaction device comprising a vibrator for concrete compaction supported at the tip of the cable and a cable insertion / extraction drive mechanism for feeding out and pulling in the cable. Insert the vibrator into the concrete by adjusting the bending direction of the horizontal direction and the tip position of the joint arm, directing the tip to the desired compaction position, and adjusting the feeding length of the cable by the cable insertion / extraction mechanism. ,
A concrete compaction method characterized by pulling out.