JPH039982B2 - - 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 slag without a mortar base. This 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, a finishing device for smoothing the surface of a semi-solidified concrete floor is connected to the outside of the traveling device via a coupling mechanism, and a drive mechanism is provided to rotate this finishing device around the traveling device. Regarding the concrete floor finishing machine installed.

[Conventional technology]

In the above-mentioned concrete floor direct finishing work, conventionally, the plasterer uses a trowel to finish while observing the solidification state of the concrete floor surface, or the method uses several finishing trowels driven and rotated by an engine installed in the main body. The object is grounded on the concrete floor surface, and a finishing machine (product name: Trowel) is used to finish the object while the worker holds it by a handle extending from the main body and moves it, up to semi-finishing.
After that, methods such as plastering with a trowel finish were used.

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 the concrete floor was performed using a finishing device attached to the self-propelled vehicle body. That is, for example, a pair of left and right crawler traveling devices are provided approximately in the center of the machine body, and around the traveling devices, for example, a plurality of finishing trowel-like bodies are arranged. This is a system in which a single traveling device is rotated (see, for example, 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 plurality of finishing devices for smoothing the semi-solidified concrete floor surface are provided outside the traveling device, and at least one of the finishing devices
Each finishing device is operatively connected to a drive mechanism so as to rotate around the traveling device in a direction opposite to that of the other finishing devices.

[Effect]

In other words, at least one finishing device among the plurality of finishing devices rotates in the opposite direction to the other finishing devices around the traveling device, so when directly finishing work on a concrete floor, these finishing devices The reaction force received from the floor surface can be canceled out, and the traveling device can be prevented from receiving a moment in either the left or right direction with respect to the traveling direction.

〔Effect of the invention〕

Therefore, it is possible to reduce the loss of running stability of the machine body during work traveling, and thereby it has become possible to easily control the running of the machine body. 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 3, a finishing device X for smoothing the 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 is connected to a finishing device X for smoothing the surface of 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. In the figure, 4a is a belt-like body 4
This is a scraper for scraping off concrete adhering to the outer peripheral surface.

Further, as the finishing device X, as shown in FIGS. 1 and 2, an inner finishing device Xa and an outer finishing device Xb are provided. Both finishing devices Xa and Xb are
Each of them is provided with four trowel-shaped bodies 7a and 7b. Each trowel-shaped body 7a, 7b consists of four steel pipe frames 8a, 8b arranged radially from the center of the vehicle body 1 toward the periphery with a phase difference of 90 degrees, respectively, in plan view. attached to the tip. Then, in the outer finishing device
The pipe frame 8b with the attached pipe frame 8b is bolted to the tip side via the support rod 20, and when finishing the concrete floor while moving, the trowel-shaped body 7b and other components collide with other objects. It is designed to prevent this from happening.

As shown in FIG. 5, each rod-like body 7a, 7b is
It is mounted so as to be swingable about a horizontal axis _P1 via brackets 9a and 9b fixed to its upper surface. And pipe frames 8a, 8b
By rotating the bolt 11 that is screwed into the nut 10 welded to the bolt 10, the brackets 9a and 9b are aligned with the axis by contacting the stepped portion 11A at the tip of the bolt 11.
By swinging around _P1 , the trowel-shaped bodies 7a and 7b can be set at any angle with respect to the concrete floor surface. In addition, brackets 9a and 9b
The degree of inclination of each trowel-shaped body 7a, 7b can be visually confirmed by the scale 21 on which the pointer 9A is located.

As shown in FIG. 4, the base end of each pipe frame 8a constituting the inner finishing device Xa is fixed around an annular connector 12a above the body 1. The connecting tool 12a is attached to a spherical seat 14a fitted externally to the finishing device side cylindrical body 13 in an up-down position 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 1 are sandwiched between one pipe frame 8a from both sides.
5a and to which the pair of rod-like bodies 15a are fixed, the bracket 16a is similarly attached to the finishing device side cylindrical body 1.
3 is externally fitted so as to be relatively rotatable. Furthermore, this bracket 16a is connected to a motor 17a attached to the lower part of the finishing device side cylindrical body 13, and a deceleration mechanism 18a is connected to the motor 17a.
The rotation of the motor 17a rotates each trowel-like body 7a of the inner finishing device Xa around the car body 1 to smooth the semi-solidified concrete floor surface. It is structured as follows.

Further, the base end of each pipe frame 8b constituting the outer finishing device Xb is located further above the annular connector 12a for the inner finishing device Xa.
It is fixed around the annular connector 12b. This connector 12b also has an axis centered on a spherical seat 14b that is fitted onto the finishing device side cylindrical body 13 so as to be able to slide up and down.
It is attached so that it can rotate freely around _P2 .
Then, a pair of rod-shaped bodies 15b are arranged to sandwich one pipe frame 8b constituting the outer finishing device Xb from both sides, and the pair of rod-shaped bodies 15b
A bracket 16b to which is fixed is fitted onto the finishing device side cylindrical body 13 so as to be relatively rotatable. moreover,
This bracket 16b is attached to the finishing device side cylindrical body 13.
The speed reduction mechanism 1 is connected to the motor 17b attached to the top of the
8b, and the rotation of the motor 17b causes each rod-like body 7b of the outer finishing device Xb to
around the car body 1 in the opposite direction to each trowel-like body 7a of the inner finishing device Xa to smoothen the semi-solidified concrete floor surface.
It is configured to work together with Xa.

In other words, when the finishing devices Xa and Xb smooth the semi-solidified concrete floor surface while rotating around the traveling device A, the finishing devices Xa and Xb receive a reaction force from the concrete floor surface. By configuring the finishing devices Xa and Xb to rotate in opposite directions, the reaction force that each finishing device Xa and Xb receives from the concrete floor surface is canceled out, and the traveling device A is rotated to either the left or the right with respect to its traveling direction. By not receiving a moment in the direction of
The aircraft is designed to operate in a stable condition.

In addition, the inclination angles of the trowel-shaped bodies 7a, 7b constituting the above-mentioned pair of finishing devices Xa, Xb with respect to the concrete floor surface may be adjusted to be different on the inside and outside, or the two finishing devices Xa, Xb may be By changing the rotation speed of the , for example, it is possible to use the inner finishing device Xa for semi-finishing and the outer finishing device Xb for final finishing, allowing for more accurate finishing work. It is possible to do this.

The above-mentioned finishing device side cylindrical body 13 has a linear bearing attached to a vehicle body side cylindrical body 22 which is vertically installed and fixed approximately at the center of the vehicle body 1 and which allows relative vertical sliding of both cylindrical bodies 13 and 22. It is fitted externally through 23. Then, one end of the rack portion 25B is fixed to the finishing device side cylindrical body 13 via the bracket 24,
A linear head motor 25 with a fixed head portion 25A is provided on the car body 1, and by the operation of the linear head motor 25, both the cylindrical bodies 13 and 22 are slid vertically relative to each other, thereby connecting the car body 1 and the finishing device X. It is configured to move up and down relative to each other.

This concrete floor finishing machine is adapted to change the direction of the machine body by using the above-mentioned connecting structure of the two cylindrical bodies 13 and 22 and the linear head motor 25. In other words, when changing the direction of the aircraft, first, each trowel 7a or 7b of either finishing device Xa or After that, the linear head motor 25 is operated to raise the car body 1 relative to the finishing device X. In this state, when one of the finishing device rotation motors 17a or 17b is operated, the vehicle body 1 rotates around the axis _P2 . When the vehicle body 1 faces a predetermined direction, the finishing device rotation motor 17a or 17b is stopped, and the linear head motor 25 is activated to lower the vehicle body 1 to the surface of the concrete floor, thereby completing the direction change of the vehicle body. do.

Therefore, compared to the case where the direction change of the aircraft is performed simply by the difference in the moving speed of the left and right crawler traveling devices A, the turning direction can be made with almost no damage to the concrete floor surface caused by the direction change. This can be done in a small radius, and the aircraft can be accurately moved to a predetermined position.

On the other hand, between the first flange 26 connected to the finishing device side cylindrical body 13 and the lower end of the spherical seat 14a for the inner finishing device Xa, and this cylindrical body 13
The second flange 27 and the spherical catch 14a are loosely fitted to the
Springs 28 and 29 fitted externally to the cylindrical body 13 are interposed between the cylindrical body 13 and the upper end thereof. Further above the second flange 27, a nut 30 is screwed onto this cylindrical body 13, and the rotation of this nut 30 causes the three nuts interposed between the second flange 27 and the nut 30 to open. While checking the pressure indicated by the pressing force adjustment load cell 31, move the spherical seat 14a up and down together with the second flange 27, and adjust the pressing force against the concrete floor surface by each trowel-shaped body 7a of the inner finishing device Xa to a predetermined value. The pressure can be adjusted to

Also, between the third flange 32 connected to the finishing device side cylindrical body 13 and the lower end of the spherical catch 14b for the outer finishing device Xb, and this cylindrical body 13
The fourth flange 33 and the spherical seat 14b are loosely fitted to the
Springs 34 and 35 fitted externally to the cylindrical body 13 are interposed between the cylindrical body 13 and the upper end thereof. Further above the fourth flange 33, a nut 36 is screwed onto this cylindrical body 13, and the rotation of this nut 36 causes the three nuts interposed between the fourth flange 33 and the nut 36 to open. While confirming the pressure indicated by the load cell 37 for adjusting the pressing force, move the fourth flange 33 up and down onto the spherical seat 14b so that the pressing force against the concrete floor surface by each trowel-shaped body 7b of the outer finishing device Xb is also adjusted to a predetermined value. The pressure can be adjusted to

Therefore, for example, as mentioned earlier, in order to perform semi-finishing and final finishing at the same time, the inner finishing device Xa and the outer finishing device
The inclination angles of a and 7b with respect to the concrete floor surface may be made different, or both finishing devices may be used.
When the rotational speeds of Xa and Xb are made different, by adjusting the pressing force on both finishing devices Xa and Xb separately, the reaction that these finishing devices Xa and Xb receive from the concrete floor surface. The force can be sufficiently offset.

The pressing force of the trowel-shaped bodies 7a and 7b against the concrete floor surface can be adjusted by rotating the adjusting nuts 30 and 36 described above, as well as by using the linear head motor 25 described above. While checking the pressure indicated by 31 and 37, the pair of finishing devices Xa and Xb are applied to the car body 1.
This can also be done by changing their relative positions. In the figure, 38 is a load cell for detecting rotational torque.

The aforementioned captire cords 33 for transmitting operation signals to the pair of traveling motors 5, finishing device rotation motors 17a and 17b, and linear head motor 25 are collectively connected to both cylindrical bodies 13,
22, and is connected to a control device 40 in a relay box 39 attached to the upper part of the finishing device side cylindrical body 13. As shown in FIG. 1, the control device 40 is connected to an operating device 44 via a connector 41 on the top of the relay box 39 and a relay cord 43 wrapped around a rod 42 extending from the connector 41. The operator holds an operating device 44 and can remotely control various operations performed by the concrete floor finishing machine.

In implementing the present invention, instead of the pair of left and right crawler traveling devices A, a plurality of drive rollers may be provided on each of the left and right sides, and these will be referred to as traveling devices A.

The configuration for relatively vertically moving the vehicle body 1 to which the traveling device A is attached and the finishing device X can be changed as appropriate. For example, instead of the linear bearing 23 in the previous embodiment, a combination of a rack and a pinion gear can be used to connect the car body 1 and the finishing device B.
Alternatively, the pinion gear may be connected to a motor that can freely rotate in forward and reverse directions. Further, in the previous embodiment, a hydraulic double-acting cylinder may be provided in place of the linear head motor 25, and these will be referred to as a drive mechanism 25. Furthermore, in the embodiment described above, the drive mechanism 25 moves the vehicle body 1 and the finishing device Although we have described what can be done, the finishing device side cylindrical body 13 to which the finishing device The combination with the gear or the linear bearing 23 in the previous embodiment is collectively referred to as the coupling mechanism 23.

The shape, mounting structure, or number of the trowel-shaped bodies 7a and 7b constituting the inner finishing device Xa and the outer finishing device Xb can be changed as appropriate. 8a, 8b
It may be a device that rotates around the vehicle body 1 while rotating around an attachment fulcrum to the vehicle body 1 .

In addition, in order to rotate the finishing device
Instead of the method of providing pipe frames 8a,
The rotor is assembled into the annular connectors 12a, 12b to which the spherical seats 14a,
A stator may be incorporated within 14b so that this coupling structure itself constitutes an electric motor. Furthermore, instead of providing a motor to rotate each of the finishing devices Xa and Xb, only one motor is provided, and the rotation of that motor is resolved and transmitted as rotation in the opposite direction. By providing a mechanism, both finishing devices Xa and Xb may be configured to rotate in opposite directions around the traveling device A, and they are combined with a drive mechanism 17 for rotating the finishing device X. to be called.

The configuration for adjusting the pressing force by both finishing devices Xa and Xb can be changed to various types, for example, by installing a concrete hardness detection device consisting of a load cell and a steel rod attached to the tip of the load cell, etc.
The load required to plunge a steel rod a certain length into a semi-solidified concrete floor can be detected by a load cell, and an appropriate pressing force can be determined and displayed from the detected load. The appropriate pressing force value determined by the pressure detection device and the indicated pressure value by the pressing force adjustment load cells 31 and 37 are sent to the linear head motor 2, respectively.
It may also be configured such that the pressing force is input to the control circuit 5 and the motor 25 automatically adjusts the pressing force. In addition, to confirm the pressing force, load cell 3
It is also possible to use various pressure sensors instead of 1 and 37.

In the embodiment described above, one inner finishing device Xa and one outer finishing device Xb were provided, and both finishing devices Xa and Xb were rotated in opposite directions. However, in carrying out the present invention, three or more finishing devices X may be provided. That is, for example, if the finishing device
Alternatively, the finishing device
Two of them may be provided and rotated in opposite directions. In such a case, the number of rods constituting each finishing device
By appropriately varying the pressing force of each finishing device X, it is possible to offset the reaction force that each finishing device X receives from the concrete floor surface, and it is possible to prevent the traveling device A from receiving a moment. It is. That is, in short, at least one finishing device X out of the plurality of finishing devices X may be rotated around the traveling device A in the opposite direction to the other finishing devices X.

Furthermore, the relay box 39 in the previous embodiment
Instead, a receiver is installed and the signal from the transmitter held by the worker is sent to this receiver using wireless to operate the machine, or the concrete floor finishing machine is used to recognize the current location. The machine is equipped with a position detection sensor to detect the stiffness of the aircraft, and the machine is operated completely automatically, such as by determining the travel route based on information from this sensor and the stiffness detection device. The method can be changed as appropriate.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of a concrete floor finishing machine with a partial cutaway, FIG. 2 is a partially omitted plan view of the concrete floor finishing machine, and FIG. Partially cutaway rear view, 4th
The figure is an enlarged sectional view of the main part, and FIG. 5 is a view taken along the - line in FIG. 1. A...Travel device, X...Finishing device, 7...Rice-shaped body, 17...Drive mechanism, 23...Connection mechanism, 25
...Drive mechanism.

Claims (1)

[Claims] 1. A finishing device Drive mechanism 17 to rotate around
A concrete floor finishing machine is provided with a plurality of finishing devices
a concrete floor finishing machine operatively connected to said drive mechanism 17 such that said concrete floor finishing machine rotates around said running unit A in a direction opposite to the other finishing machines X; 2. Each of the plurality of finishing devices The concrete floor finishing machine according to claim 1, which allows relative vertical movement between the traveling device A and the finishing device X.