JPH0330670B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a so-called method for constructing carpets, long flooring materials, etc. as indoor floor finishing materials on concrete floor slabs without a mortar base. The present invention relates to a concrete floor finishing machine for smoothing the surface of a concrete floor after it has been compacted after concrete placement and has removed water seeping from the surface in a work called direct concrete floor finishing.

More specifically, the above-mentioned concrete floor finishing machine relates to a concrete floor finishing machine in which a finishing device for smoothing a semi-solidified concrete floor surface is connected to the outside of a traveling device via a coupling mechanism. In finishing work, conventionally, plasterers use a trowel to finish the concrete floor while observing the hardening state of the surface, or use several finishing trowel-like bodies driven and rotated by an engine installed in the main body to finish the concrete floor. A finishing machine (trade name: Trowell) is used, which is grounded on the surface and is moved by the worker by holding a handle extending from the main body, to perform semi-finishing.
After that, methods such as trowel finishing were used for plastering.

However, in all cases, the above-mentioned methods require a highly skilled plasterer and tend to require long hours of work, especially in winter, when concrete hardens slowly, resulting in harsh working conditions. There is a possibility that this will happen.

In the case of the latter method, when steering the finishing machine, the main body is tilted by operating the handle while the finishing trowel remains on the ground, and the finishing reaction force of the finishing trowel is utilized. This makes steering operations difficult, and moreover, it is easy to damage the concrete surface during steering. Furthermore, the vibrations of the engine are transmitted to the worker, and if the worker continues to work for a long time, there is a risk that the worker will become fatigued.

Therefore, as shown below, a method was proposed in which direct finishing of concrete floors is performed using a finishing device attached to a self-propelled vehicle body. That is,
For example, a pair of left and right crawler running devices is installed approximately in the center of the machine, and a single finishing device consisting of, for example, a plurality of finishing trowels is rotated around this running device. For example, see Japanese Patent Application No. 59-248529).

[Problem that the invention seeks to solve]

However, when using the concrete floor finishing machine of the earlier patent application mentioned above, it was possible to finish the concrete floor with considerable accuracy and to reduce worker fatigue, but it also had the following problems. There was a risk of inconvenience occurring, and there was room for improvement.

In other words, since the finishing equipment rotates in one direction around the traveling device, the reaction force received from the concrete floor surface causes the traveling device to generate a moment in either the left or right direction with respect to the traveling direction during work travel. This tended to make it difficult to control the aircraft to keep it moving straight.

On the other hand, when a pair of left and right crawler traveling devices is provided as a traveling device, the drive speeds of the left and right crawler traveling devices are set to be different in advance in order to offset the moment in either direction with respect to the traveling direction as described above. However, in this case, traces of passage by the crawler traveling device on one side tend to remain, which may lead to deterioration of finishing accuracy.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, an object of the present invention is to provide a concrete floor finishing machine that can directly finish concrete floors with more precision and has good stability during running.

[Means for solving problems]

The characteristic configuration of the concrete floor finishing machine according to the present invention is that a finishing device for smoothing a semi-solidified concrete floor surface is interlocked with a motor so that it can reciprocate around a traveling device in contact with the concrete floor surface. .

[Effect]

In other words, the finishing device moves back and forth around the traveling device instead of rotating in one direction.
During direct finishing work on concrete floors, the reaction force that the finishing equipment receives from the concrete floor surface is a reaction force that generates a moment that directs the traveling device to the left, and a reaction force that generates a moment that directs the travel device to the right. . As a result, the traveling gear does not generate only a biased moment in one direction to the left or right, and the traveling gear, which has changed direction due to the reaction force during forward movement, returns to its original direction due to the reaction force in the opposite direction during the next forward movement. Corrected in direction.

〔Effect of the invention〕

Therefore, it is possible to reduce the loss of running safety of the machine during work traveling, which makes it easier to control the machine's running, and to minimize damage to the concrete floor surface caused by the running gear. . As a result, it has become possible to provide a concrete floor finishing machine that can finish the surface of a concrete floor with high precision, is easy to operate, and is excellent in both workability and operability.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 and 2, a finishing device X for smoothing a concrete floor surface is connected to a vehicle body 1 equipped with a pair of left and right crawler traveling devices A, and a concrete floor used for direct finishing work on the concrete floor A finishing machine is configured.

Both crawler traveling devices A each include a driving wheel body 2 attached to both ends of a vehicle body 1, an idling wheel body 3 for guiding,
It also consists of an endless belt-like body 4 made of rubber and having a flat ground contact side, which is stretched across both wheels 2 and 3. The left and right drive wheels 2 are interlocked and connected to separate driving motors 5 that are capable of forward and reverse rotation, and are configured so that the aircraft can move forward and backward and change direction by combining the forward and reverse rotation of both motors 5. has been done. In addition, in the front and rear intermediate portions of both wheels 2 and 3,
A sled-shaped body 6 extending downward from the vehicle body 1 is pressed against the inner circumferential surface of the belt-shaped body 4 which is the grounding side, and the crawler traveling device A is grounded over a wide area to reach the concrete surface that has not hardened yet. It is designed to prevent the aircraft from sinking.

The finishing equipment X includes upper and lower finishing equipment Xa,
Xb, and these upper and lower finishing devices Xa and Xb
A pair of pipe frames 8a and 8b made of steel pipes are opposed to each other around the center of the vehicle body 1 and are fixedly connected to each other by separate circular frames 7a and 7b, respectively, and a pair of pipe frames 8a and 8b are attached to the tips of these pipe frames 8a and 8b. It consists of attached trowel-shaped bodies 9a and 9b. That is, the upper-stage finishing device Xa includes a pair of tall pipe frames 8a and trowel-shaped bodies 9 attached to the tips of these pipe frames 8a, respectively.
In addition, the lower finishing device Xb consists of a pair of low-height pipe frames 8b and trowel-shaped bodies 9 attached to the tips of these pipe frames 8b, respectively.
b, consisting of a total of four pipe frames 8a,
8b are arranged radially with a phase shift of 90° from the center of the vehicle body 1 in plan view.

At the bases of these four pipe frames 8a and 8b, as shown in FIG.
a, 10b are attached, and a cylindrical guide member 12 having two upper and lower guide grooves 12a, 12b is attached to the vertically oriented cylindrical body 11 that is installed upright on the vehicle body 1, and can be freely removed only by relative sliding. The free rotating roller 10a of the pipe frame 8a of the upper finishing device Xa is fitted into the upper guide groove 12a, and the free rotating roller 10a of the pipe frame 8a of the upper finishing device
Inside b is the pipe frame 8 of the lower finishing device Xb.
The free rotating rollers 10b of b are respectively engaged. The upper and lower two-stage guide grooves 12a and 12b are both provided over the entire circumference of the guide member 12, and at two locations on the entire circumference, there are rising guide groove portions that protrude upward with a phase shift of 180 degrees. 12c, 12d are provided, and these rising guide groove portions 12c, 12d
However, with the guide member 12 as the center, the objects on the same level face each other, and the objects on the upper and lower levels are 90 degrees to each other.
They are arranged out of phase. A cylindrical body 13 is fitted onto the upper part of the cylindrical body 11 so as to be relatively rotatable, and two rods 14a and 14b having forked tips are fixed to the cylindrical body 13. The forked portions of the rod-shaped bodies 14a and 14b are respectively engaged with the pipe frame 8a of the upper finishing device Xa and the pipe frame 8b of the lower finishing device Xb.
The cylindrical body 13 is interlocked and connected to a stepping motor 15 which is capable of forward and reverse rotation, and the rod-shaped bodies 14a and 14b reciprocate around the cylindrical body 11 as the motor 15 rotates in the forward and reverse directions. While in contact with the floor surface, each finishing device Xa, 10b is the ascending guide groove portion 12c, 1
By riding on 2d, each finishing device Xa,
The Xb is configured to be lifted upward.

FIG. 4 shows the structure for attaching the rods 9a, 9b to the respective pipe frames 8a, 8b, in which the link member 16a fixed to the rods 9a, 9b is attached to the shaft 16b.
Another link member 16c is fixedly connected to the rotating shaft 17a of the rotary solenoid 17, which is pivotally connected to the pipe frames 8a and 8b through the pipe frames 8a and 8b, and is fixed to the pipe frames 8a and 8b. , 16c are further pivotally connected to each other by another link member 16d, and a parallel quadruple link mechanism is formed by these link members 16a, 16c, and 16d. Stoppers 18a and 18b are fixed to the pipe frames 8a and 8b on both sides of the link mechanism, and when each finishing device Xa and Xb is located at the end of the reciprocating range,
In other words, when each of the finishing devices Xa, Xb is lifted upward, the tilting posture of the trowel-like bodies 9a, 9b is switched by rotating the rotary solenoid 17 in the forward and reverse directions and stopping the rotary solenoid 17. In this case,
As shown by the imaginary line, a stopper 18c that can move in and out is provided, and when the trowel-like bodies 9a and 9b act, the link member 1
It is also possible to protrude so as to come into contact with 6a and 16c, thereby reliably maintaining the operating posture of the trowel-shaped bodies 9a and 9b. Further, the pressing force of each trowel-shaped body 9a, 9b against the concrete floor surface can be adjusted by operating a linear head motor 19 interposed between the vehicle body 1 and the guide member 12.

In this way, each finishing device is arranged in two stages, upper and lower.
Since Xa and Xb reciprocate around the traveling device A with the trowel-shaped bodies 9a and 9b in contact with the concrete floor surface as the motor 15 rotates forward and backward, each finishing device Xa, The reaction force that Xb receives from the concrete floor surface is a reaction force that generates a moment that turns the car body 1 to the left and a reaction force that generates a moment that turns the car body 1 to the right. The modified vehicle body 1 is returned to its original orientation by the reaction force during reciprocation, improving running stability. When changing the tilted posture of the rods 9a, 9b at both ends of the reciprocating range, the rods 9a, 9b are lifted upward, so the posture of the rods 9a, 9b is changed. At times, the concrete floor surface is not roughened by the trowel-like bodies 9a and 9b.

In the above embodiment, each finishing device Xa, Xb
Lift up the guide groove portions 12c and 12d for raising.
and free rotating rollers 10a, 10 that engage in these guide grooves 12a, 12b.
b) shows what is done mechanically,
It is also possible to configure the finishing process to be performed by expanding and contracting a linear head motor 19 interposed between the car body 1 and each of the finishing devices Xa and Xb, and to automatically control it using a microcomputer or the like.
An example of this is shown in the flowchart in Figure 5. First, each finishing device is measured using an angle meter such as an encoder.
The position within the reciprocating range of Xa and 2). When the set value is reached, the linear head motor 19 is extended (step 3), each finishing device Xa, Xb is lifted up, and the rotation angle of each finishing device Xa, Xb reaches the set value (for example,
180°) (step 4). When the set value is reached, the linear head motor 19
(Step 5), the rotary solenoid 17 is actuated to switch the tilted posture of each rod 9a, 9b (Step 6), and the linear head motor 19 is retracted (Step 7) to perform each finishing step. Lower equipment Xa and Xb. At this time, a load meter such as a load cell detects the pressing force of each trowel-shaped body 9a, 9b against the concrete floor surface, and when the pressing force reaches a set value (for example, 30 kg) (step 8),
Rotate each finishing device Xa, Xb (step 9),
Repeat this.

Next, another embodiment will be described based on FIGS. 6 and 7. As the finishing device X, an inner finishing device Xc and an outer finishing device Xd are provided. Both finishing devices Xc and Xd have four trowel-shaped bodies 9c and 9, respectively.
It is equipped with d. Each trowel-shaped body 9c, 9d is composed of four steel pipe frames 8c, 8d, which are arranged radially from the center of the vehicle body 1 toward the periphery with a phase difference of 90 degrees, respectively, in plan view. It has the same structure as the previous embodiment and is attached to the tip so that the tilt position can be changed freely.

As shown in FIG. 6, the base end of each pipe frame 8c constituting the inner finishing device Xc is fixed around an annular connector 20a above the vehicle body 1. The connecting tool 20a is vertically and slidably fitted onto a cylindrical sleeve 23 that is attached to the outside of the finishing device side cylindrical body 21 in a vertical position via a pair of upper and lower bearings 22 so as to be relatively rotatable and slidable. It is attached to the spherical seat 24a, which is formed in a circular shape, so as to be relatively rotatable around the axis _P2 . Then, a pair of rod-like bodies 14c are arranged to sandwich one pipe frame 8c from both sides, and the pair of rod-like bodies 14c
A bracket 25a to which is fixed is similarly fitted onto the finishing device side cylindrical body 21 so as to be relatively rotatable. Furthermore, this bracket 25a is interlocked and connected via a speed reduction mechanism 26 to a reversible stepping motor 15 attached to the lower part of the finishing device side cylindrical body 21. Each trowel-shaped body 9c of the device Xc is configured to be rotated reciprocatingly around the vehicle body 1 while in contact with the concrete floor surface, thereby smoothing the semi-solidified concrete floor surface.

Further, the base end of each pipe frame 8d constituting the outer finishing device Xd is fixed around an annular connector 20b further above the annular connector 20a to the inner finishing device Xc. This connector 20b is also attached to a spherical seat 24b fitted onto the sleeve 23 so as to be slidable up and down, so as to be relatively rotatable around the axis _P2 . Then, a pair of rod-shaped bodies 14d are arranged to sandwich one pipe frame 8d constituting the outer finishing device Xd from both sides, and a bracket 25b to which the pair of rod-shaped bodies 14d is fixed is fixed to the sleeve 23. It has been done. Further, a bevel gear 27a fixed to the lower end of this sleeve 23 is attached to the finishing device side cylindrical body 21.
It is interlocked and connected to the bevel gear 27c fixed to the bracket 25a through an idler bevel gear 27b attached to the bracket 25a, so that each trowel shape of the outer finishing device Xd is body 9d
are reciprocated around the car body 1 in contact with the concrete floor surface in the opposite direction to each trowel-like body 9c of the inner finishing device Xc, smoothing the semi-solidified concrete floor surface. It is configured to perform this in cooperation with the finishing device Xc.

In other words, the finishing device Furthermore, two finishing devices Xc and Xd are provided at different distances from the traveling device A, and these finishing devices Xc,
Since Xd is reciprocated in opposite directions, the moment due to the reaction force that one finishing device Xc receives from the concrete floor surface and the moment due to the reaction force that the other finishing device Xd receives from the concrete floor surface cancel each other out. , driving stability can be further improved.

The above-mentioned finishing device side cylindrical body 21 is provided with a linear bearing 28 that allows relative sliding of both cylindrical bodies 11 and 21 on the vehicle body side cylindrical body 11 which is vertically installed and fixed at approximately the center of the vehicle body 1. It is fitted externally through. A linear head motor 19 is interposed between a bracket 29 fixed to the finishing device side cylindrical body 21 and the vehicle body 1.
9 causes both the cylindrical bodies 11 and 21 to slide relative to each other so that the trowel-shaped bodies 9c and 9d can be lifted upward when the finishing devices Xc and Xd are located at the end of the reciprocating range. It is configured.

On the other hand, the bevel gear 2 connected to the sleeve 23
7a and the spherical catch 24 for the inner finishing device Xc
a, and the finishing device side cylindrical body 21
Above, sleeves 23 are respectively disposed between the flange 30 loosely fitted into the cylindrical body 21 and the upper end of the spherical seat 24b for the outer finishing device Xd.
and springs 31 and 32 fitted externally to the cylindrical body 21.
is interposed. Further above the flange 30, a nut 33 is screwed onto the cylindrical body 21, and when the nut 33 rotates, the flange 3
0 and the nut 33, while checking the indicated pressure from the three load cells 34 for adjusting the pressing force inserted between the flange 30 and the both spherical seats 24a, 2.
4b is moved up and down, and the inner and outer finishing devices Xc, Xd
The pressing force of each of the trowel-like bodies 9c and 9d against the concrete floor surface can be adjusted to a predetermined pressure.

The pressing force of the trowel-like bodies 9c and 9d on the concrete floor surface can be adjusted by using the above-mentioned linear head motor 19 and the pressing force adjusting load cell 34, in addition to the above-mentioned method by rotating the adjusting nut 33. While checking the indicated pressure,
This can also be done by changing the relative positions of the pair of finishing devices Xc and Xd relative to each other.

[Brief explanation of drawings]

The drawings show an embodiment of the concrete floor finishing machine according to the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a plan view, Fig. 3 is a perspective view of the main part, and Fig. 4 is the main part. 5 is a flowchart showing the operation,
FIG. 6 is a partially cutaway side view of main parts showing another embodiment, and FIG. 7 is a partially cutaway plan view showing another embodiment. A... Traveling device, X... Finishing device, Xc... Inner finishing device, Xd... Outer finishing device, 15...
…motor.

Claims (1)

[Scope of Claims] 1. Finishing device
In the concrete floor finishing machine connected to the outside of the concrete floor, the finishing device X is reciprocated around the traveling device A in contact with the concrete floor surface,
A concrete floor finishing machine that is interlocked and connected to a motor 15. 2. Two finishing devices X are provided at different distances from the traveling device A, and these two finishing devices Xc,
2. The concrete floor finishing machine according to claim 1, wherein the concrete floor finishing machine is operatively connected to the motor 15 so as to reciprocate Xd in opposite directions.