JPH07229302A - Concrete leveling equipment - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to obtain a concrete leveling apparatus using a screw auger capable of leveling concrete to a certain level. [Structure] A concrete leveling device that changes the rotating direction of the screw auger when it moves forward and backward, and changes the number of rotations or the level of attachment to make the depth of concrete cut constant. When turning the concrete leveling device, the screw auger can be floated from the concrete surface by manual control, and the level of mounting the screw auger to the concrete leveling device is automatically changed to keep the leveling level of the concrete constant. A concrete leveling device designed to maintain a certain level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a concrete leveling device,
Particularly, it relates to a concrete leveling device using a screw auger.

[0002]

2. Description of the Related Art Conventionally, as a concrete leveling apparatus using a screw auger, for example, Japanese Examined Patent Publication No. 27703/1990.
The ones disclosed in Japanese Patent Publication No. 3-27705 and Japanese Patent Publication No. 3-27705 are known.

In such a conventional concrete leveling apparatus, a swing arm supported by a main body of the apparatus through a swing mechanism and a front end portion of the swing arm are mounted and reciprocally swung on a horizontal plane so that concrete can be swung. Unidirectional rotating screw pushed out to one end side of the direction, and having a vibration and concrete finishing plate attached to the rear part of the swing direction of this screw, when performing the concrete leveling work, the unidirectional rotating screw The swing arm swings on a horizontal plane, and the concrete distributed to the placing portion is pushed to one end side in the axial direction of the one-way rotating screw, and the concrete surface is finished by the vibrating and concrete finishing plate.

Further, in this publication, a vertical shaft is provided substantially in the center of a traveling vehicle body having a crawler, and a screw auger is installed at the tip of a horizontal arm installed on the vertical shaft.
It is shown that the arm is moved up and down along the vertical axis so that the height is leveled and the arm is lifted.

[0005]

The above-mentioned conventional concrete leveling device is for leveling the concrete while swinging the one-direction rotating screw in one direction and the other direction, so that there is no particular problem in pushing out the concrete. However, a problem arises when the concrete leveling device is fed linearly in one direction, moved to an adjacent area, and then leveled in the other direction while inverting the concrete.

That is, in the leveling work in the direction from the right to the left on the concrete surface 1 in the working space in FIG. 7, the concrete is applied to one end side in the axial direction of the screw auger 3 of the concrete leveling device 2 by the leveling work. , It will be pushed upward in FIG. Therefore, at the end of the concrete surface 1 in the workplace, the concrete leveling device 2
When the screw auger 3 shown in FIG. 8 is rotated, when the upper part of the previous leveling part is continuously leveled by moving the parts to the adjacent upper part and then reversing in the other direction. When the direction remains the same, the concrete is extruded downward by the screw auger 3 in the axial direction in FIG. 7, and the concrete extruded in the previous step cannot be continuously sent to the upper area in FIG. 7. Like

In order to eliminate the above-mentioned inconvenience, the rotation direction of the screw auger 3 may be changed every time the concrete leveling device 2 is reversed.

However, when the rotation direction of the screw auger 3 is changed, when the screw auger 3 rotates so as to move in the same direction as the forward direction of the concrete leveling device 2 as shown in FIG. 8, that is, in the case of counterclockwise rotation. , The concrete is scooped up, and when the screw auger 3 rotates so as to move in the direction opposite to the forward direction as shown in FIG. 9, the concrete is drawn in, and the amount of concrete pushed out by the screw auger 3, that is, the cutting depth is H ₁ and H ₂
As shown in Fig. 2, the levels of the concrete surface after being leveled become non-uniform.

Further, in the above-mentioned conventional concrete leveling device, the screw auger moves up and down as the vehicle travels due to unevenness due to the reinforcing bar lattice laid on the floor surface of the workplace, bending due to the working weight of the reinforcing bar, and ups and downs of the poured concrete. In this case, the level of the concrete surface after leveling could not be uniform because it could not be absorbed properly.

The present invention eliminates the above drawbacks.

[0011]

The concrete leveling apparatus of the present invention comprises a screw auger, a means for linearly reciprocating the screw auger, and a rotation direction of the screw auger each time the movement of the screw auger is reversed. And a means for changing the concrete cutting depth by the screw auger when the rotation direction is changed.

The means for changing the concrete cutting depth is means for changing the rotation speed of the screw auger.

The means for changing the depth of cut in the concrete are a transmitter provided at a reference height, a receiver provided in the screw auger for receiving a signal from the transmitter, and a signal from the receiver. Thus, it comprises means for adjusting the height of the screw auger relative to the height of the moving means of the screw auger.

The means for changing the rotation direction of the screw auger includes an input bevel gear connected to a drive shaft of the screw auger, a shifter, and a shifter for selectively switching one or the other side surfaces of the input bevel gear by the shifter. The left and right bevel gears to be combined, the left and right transmission shafts connected to the left and right bevel gears, the left and right drive sprockets connected to the transmission shafts, and the left and right ends of the rotation shaft of the screw auger. The left and right driven sprockets, the driving sprocket and a chain connecting the driven sprocket corresponding to the driving sprocket, and a chain connecting the driven sprocket to the driven sprocket, and inputting the rotation of the drive shaft by sliding the shifter to the left. Drive sprocket, chain, drive sprocket Rotation in one direction can be transmitted to the rotation shaft of the Leu Auger, and the rotation of the drive shaft is input by sliding the shifter to the right.Bevel gear, right bevel gear, drive sprocket, chain, driven sprocket The rotation in the other direction can be transmitted to the rotation shaft.

The left and right rotation transmission ratio of the drive sprocket and the driven sprocket is variable.

Further, the concrete leveling apparatus of the present invention is
Screw auger, means for moving this screw auger, automatic control means for vertically moving the screw auger relative to this screw auger moving means, and manual control means for raising the screw auger from the concrete surface. Become.

The automatic control means for the screw auger includes a transmitter provided at a reference height, a receiver provided on the screw auger for receiving a signal from the transmitter, and a screw from the signal from the receiver. And means for adjusting the height of the screw auger relative to the height of the moving means of the auger.

The screw auger is raised by a manual control means in a very short time.

The vertical movement speed of the screw auger by the automatic control means is low enough to follow the vertical movement when the screw auger is running.

The receiver has a plurality of sensing elements separated in the height direction, and is relative to the height of the moving means of the screw auger according to the position of the sensing element which receives a signal from the transmitter. The height of the screw auger is adjusted accordingly.

[0021]

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

1 and 2, 4 is an auger frame, 5 is a traveling wheel, 6 is a machine base of the screw auger 3, 7 is a main body of the screw auger 3, 8 is an upper part of the main body 7 and the machine base 6 , A averaging height adjusting cylinder inserted between the lower part of the tamper, 9 a tamper connected to the main body 7 of the screw auger 3, 10 a vibration motor of the tamper 9, 11 auger frame 4 and the screw auger 3 is a parallel link for vertically connecting the machine base 6, 12 is a hydraulic cylinder for driving the parallel link 11, 13 is a drive shaft of the screw auger 3 having a universal joint, and 14 is a drive shaft 13
A rotary shaft of the screw auger 3 connected to the rotary auger 3 via a rotation transmission means 15, and a guide shaft 16 for guiding the main body 7 of the screw auger 3 to the machine base 6 so as to be vertically movable.

In the present invention, as shown in FIGS. 2 and 3, an input bevel gear 17 in which the rotation transmission means 15 is connected to the drive shaft 13, a shifter 18, and one and the other of the input bevel gear 17 are provided. The left and right bevel gears 19a and 19b engaged with the side surfaces, and the left and right transmission shafts 20a and 20b selectively connected to the left and right bevel gears 19a and 19b by the shifter 18, respectively.
And left and right drive sprockets 21a and 21b connected to the transmission shafts 20a and 20b, left and right driven sprockets 22a and 22b connected to the left and right ends of the rotary shaft 14 of the screw auger 3, and the drive sprocket. 21a, 21b and corresponding chains 23a, 23b for connecting the driven sprockets 22a, 22b corresponding thereto.
And the rotation of the drive shaft 13 is input by sliding the shifter 18 to the left.
7. Left side bevel gear 19a, drive sprocket 2
For example, counterclockwise rotation can be transmitted to the rotation shaft 14 of the screw auger 3 via the la, chain 23a, and driven sprocket 22a, and the rotation of the drive shaft 13 can be input by sliding the shifter 18 to the right.
7. Bevel gear 19b on the right side, drive sprocket 2
For example, clockwise rotation can be transmitted to the rotation shaft 14 of the screw auger 3 via the 1b, the chain 23b, and the driven sprocket 22b. In addition, the drive sprockets 21a and 21b and the driven sprockets 22a and 22b, respectively.
The left-right rotation transmission ratio of b is made equal to the ratio of the above-mentioned depths of cut H ₁ and H _{2, so that} no matter which direction the screw auger 3 rotates, the depth of cut is equalized.

In the second embodiment of the present invention, as shown in FIG.
As shown in FIGS. 2 and 4, a laser light or infrared light transmitter 24 for irradiating the entire work area is provided at a desired height from the concrete surface 1 in the corner of the work place.
A receiver 25 for receiving laser light or infrared light from the laser beam 4 is provided above the mast 26 suspended from the main body 7 of the screw auger 3, and the receiver 25 is controlled by controlling the leveling height adjusting cylinder 8. When the rotation direction of the screw auger 3 is changed while the screw auger 3 can level the concrete surface to a desired level at the height position where the laser light or infrared light from the transmitter 24 is received. Detecting this, the height of the receiver 25 is adjusted by the receiver height adjusting motor 28 to the cutting depths H ₁ and H ₂
The relative position with respect to the screw auger 3 is automatically controlled by an amount corresponding to the difference so that concrete can be always leveled to a predetermined level regardless of the rotation direction of the screw auger 3.

According to this second embodiment, the drive sprockets 21a and 21a are the same as in the first embodiment.
It is not necessary to make the rotation transmission ratios between b and the driven sprockets 22a and 22b different from each other.

The screw auger 3 mounted on the rear side of the auger frame 4 runs due to the unevenness of the reinforcing bar lattice laid on the floor of the work site, the bending of the reinforcing bar due to the working weight, and the rising of the cast concrete. As it moves up and down.

Therefore, in the third embodiment of the present invention,
As shown in FIG. 5, the receiver 25 is constituted by a CCD or the like composed of a plurality of light receiving elements arranged adjacent to each other in the height direction, and an output corresponding to the position of the element detecting light is added to the controller 27, The controller 27 controls the leveling height adjusting cylinder 8 so as to compensate the vertical movement of the screw auger 3.

The extension / contraction speed of the leveling height adjusting cylinder 8 should be low enough to follow the unevenness caused by running work, and the inertial force associated with the vertical adjustment of the screw auger 3 should be small to improve the stop position accuracy. It is preferable to increase the height accuracy of the leveling surface.

FIG. 6 shows a block diagram of the controller 27 in the concrete leveling apparatus of the present invention.
8b is a right and left leveling height adjusting cylinders, 25
a and 25b are laser receivers on the right and left sides, respectively 27
a and 27b are C / P / U provided on the controller 27, respectively.
Also, a memory and 29 are auger rotation direction changeover switches.

When the leveling device 2 reaches the end of the work area shown in FIG. 4 and inverts it, the hydraulic cylinder 12 is operated by the operator to manually move the screw auger 3 from the concrete surface 1. Raise the surface so that the leveling device 2 can easily turn.

While the screw auger 3 is floating, this is detected by a sensor (not shown) and the automatic control of the leveling height adjusting cylinder 8 by the controller 27 is canceled.

[0032]

As described above, according to the concrete leveling apparatus of the present invention, the depth of cut in the concrete can be made constant irrespective of whether the screw auger is normally or reversely rotated or whether the floor surface is raised or not. There are various advantages such as keeping the height after edge adjustment constant and improving the accuracy of the leveling height.

[Brief description of drawings]

FIG. 1 is a front view of a concrete leveling apparatus of the present invention.

FIG. 2 is a side view of the concrete leveling apparatus of the present invention.

FIG. 3 is a side view showing the driving means of the screw auger of the concrete leveling apparatus of the present invention.

FIG. 4 is an explanatory view of a transmitter of the concrete leveling apparatus of the present invention.

FIG. 5 is an explanatory view of an embodiment of a receiver of the concrete leveling device of the present invention.

FIG. 6 is a block diagram of a controller in the concrete leveling apparatus of the present invention.

FIG. 7 is a plan view for explaining the locus of movement of the screw auger in the workplace.

FIG. 8 is an explanatory diagram of the cut depth of concrete corresponding to the traveling direction and the rotating direction of the screw auger.

FIG. 9 is an explanatory diagram of a cutting depth of concrete corresponding to the traveling direction and the rotating direction of the screw auger.

[Explanation of symbols]

 1 Concrete Surface 2 Concrete Leveling Device 3 Screw Auger 4 Auger Frame 5 Running Wheel 6 Machine Stand 7 Screw Auger Main Body 8 Leveling Height Adjustment Cylinder 9 Tamper 10 Tamper Vibration Motor 11 Parallel Link 12 Driving Hydraulic Cylinder 13 Drive Shaft 14 Rotating shaft 15 Rotation transmitting means 16 Guide shaft 17 Input bevel gear 18 Shifter 19a Bevel gear 19b Bevel gear 20a Transmission shaft 20b Transmission shaft 21a Drive sprocket 21b Drive sprocket 22a Driven sprocket 22b Driven sprocket 23a Chain 23b Chain transmitter 26 Transmitter 24 Transmitter 24 28 Receiver height adjustment motor 29 Auger rotation direction selector switch

Claims (10)

[Claims] 1. A screw auger, a means for linearly reciprocating the screw auger, a means for changing the rotation direction of the screw auger each time the movement of the screw auger is reversed, and a method for changing the rotation direction. A concrete leveling device comprising means for changing a concrete cutting depth by a screw auger. 2. The concrete leveling apparatus according to claim 1, wherein the means for changing the depth of cut of the concrete is a means for changing the rotation speed of the screw auger. 3. The concrete cutting depth changing means comprises a transmitter provided at a reference height, a receiver provided on the screw auger for receiving a signal from the transmitter, and a signal from the receiver. 3. The concrete leveling apparatus according to claim 1 or 2, further comprising means for adjusting the height of the screw auger relative to the height of the moving means of the screw auger. 4. A means for changing the rotation direction of the screw auger, an input bevel gear connected to a drive shaft of the screw auger, a shifter, and a shifter for selectively switching one side or the other side surface of the input bevel gear by the shifter. The left and right bevel gears to be combined, the left and right transmission shafts connected to the left and right bevel gears, the left and right drive sprockets connected to the transmission shafts, and the left and right ends of the rotation shaft of the screw auger. The left and right driven sprockets, the driving sprocket and a chain connecting the driven sprocket corresponding to the driving sprocket, and a chain connecting the driven sprocket to the driven sprocket, and inputting the rotation of the drive shaft by sliding the shifter to the left. Drive sprocket, chain, screw through drive sprocket -One-way rotation can be transmitted to the rotation shaft of the auger, and the rotation of the drive shaft is input by sliding the shifter to the right.The rotation of the screw auger through the bevel gear, the right bevel gear, the drive sprocket, the chain, and the driven sprocket. The concrete leveling device according to claim 1, 2 or 3, wherein rotation of the other direction is transmitted to the shaft. 5. The concrete leveling apparatus according to claim 4, wherein the left and right rotation transmission ratios of the drive sprocket and the driven sprocket are variable. 6. A screw auger, means for moving the screw auger, automatic control means for vertically moving the screw auger relative to the screw auger moving means, and raising the screw auger from a concrete surface. A concrete leveling device comprising a manual control means. 7. The automatic control means of the screw auger comprises a transmitter provided at a reference height, a receiver provided on the screw auger for receiving a signal from the transmitter, and a signal from the receiver. 7. The concrete leveling apparatus according to claim 6, further comprising means for adjusting the height of the screw auger relative to the height of the moving means of the screw auger. 8. The concrete leveling apparatus according to claim 6, wherein the screw auger is raised by a manual control means in an extremely short time. 9. The concrete leveling machine according to claim 6, wherein the vertical movement speed of the screw auger by the automatic control means is low enough to follow the vertical movement when the screw auger is running. Equipment. 10. The height of the moving means of the screw auger, wherein the receiver has a plurality of sensing elements separated in a height direction, and the moving means of the screw auger is dependent on a position of the sensing element receiving a signal from the transmitter. 10. The concrete leveling apparatus according to claim 6, 7, 8 or 9, wherein the height of the screw auger is adjusted relative to the above.