JPS641602B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a self-propelled finisher for finishing floors, and more particularly to a self-propelled finisher particularly suitable for finishing concrete floors.

[Conventional technology] Currently, the monolithic method is the mainstream method for concrete floor finishing, and with this method, the floor finishing is done at the same time as the concrete hardens, resulting in late-night work. The dust generated during finishing is making the working environment extremely bad. As described above, the working conditions for finishing work on concrete floors are not necessarily good, but no satisfactory solution has been taken to date.

[Object of the Invention] Therefore, it is an object of the present invention to provide an unmanned or self-propelled finisher.

[Structure of the Invention] The self-propelled finisher according to the present invention has the following features:
It consists of a traveling trolley and a trowell coupled to the trolley so as to be able to turn vertically and horizontally, and the trowell includes a plurality of blades that are driven to rotate in contact with a finished floor surface, and a combination of the wings and the finished floor surface. and a trowell tilting means for locally changing the contact pressure between the trowel and the trowell.

[Operations and Effects of the Invention] Therefore, when the trowell is pulled or pushed by the traveling truck while rotating the blades, the floor surface is finished by the blades. However, when such a method is used, the width that can be completed in one front row of the traveling carriage is the rotating diameter of the blade, which is not necessarily efficient.

Therefore, according to the present invention, it is possible to finish a wide area in one run of the traveling trolley. That is, by configuring the trowell to turn in the left and right directions with respect to the traveling vehicle, the traveling vehicle can freely change direction. In carrying out the present invention, a trowel tilting means for locally altering or changing the contact pressure between the blade and the finished floor surface is employed as a specific configuration for turning.

In carrying out the invention, the trowel tilting means is embodied as a trowel tilting motor, for example a hydraulic piston cylinder unit, and in some embodiments is provided with a vane angle changing motor. Furthermore, the traveling carriage may be provided with position detection means for detecting the current position, if necessary.

[Examples] Examples of the present invention will be described below with reference to the drawings. Referring now to FIGS. 1 and 2, the self-propelled finisher consists of a traveling truck 1 and a trowel 10 that is pulled or pushed by the truck. The traveling truck 1 has wheels 2, 2 at the front and rear, and an underframe 4 is supported via suspensions 3, 3. A driving section or a control section 5 is mounted on the underframe 4. The control unit 5 includes all the devices necessary for self-propulsion of the truck, such as a drive motor for the wheels 2, a current position detection device, a drive control device for the trowel 10, a trowel tilt control means, and the like. A bracket 6 is erected on the opposite side of the control section 5, and a connecting arm 7 is attached to a substantially intermediate position of the bracket so as to be swingable in the horizontal direction.

The trowel 10 has a cylindrical casing 11
and the floor finish surface G located below the casing.
A plurality of blades 12, 1 that are rotationally driven in contact with
2..., a cover 13 that covers the blades, and a trowel tilting motor 14, which will be described in detail later.

A drive motor 15 is provided within the casing 11, and a reducer 16 is coupled to the output shaft of the motor.
A plurality of blades 12, 12, . Also, output shaft 1
7 is provided with a slide member 19 slidable in the axial direction, and this slide member 19
is a motor, for example, piston/cylinder unit 2
0 via the link mechanism 21 in the vertical direction. The slide member 19 and the blade 12 are connected by a lever 23. The lever 23 and the slide member 19 are connected to each other by fitting the lever 23 into the circumferential groove 25 of the slide member 19, as shown in FIG.
The head portions 26 of No. 3 are slidably engaged with each other. Therefore, along with the blade 12, the lever 2
3 rotates, the slide member 19 does not rotate.
When the slide member 19 is appropriately driven vertically by the motor 20, the head 2 of the lever 23
6 moves up and down, and the arm 2 is connected to the lever 23.
2 swings around a fulcrum 24 on the bracket 18. As a result, the angle of the blade 12 changes.

The other end of the connecting arm 7 is coupled to the casing 11 of the trowell 10 via a horizontal pin 8 so as to be swingable in the vertical direction. A trowel tilting motor, such as a piston-cylinder unit 14, is provided on the connecting arm 7. That is, a column 30 is erected on the connecting arm 7, a cylinder 31 is swingably provided on this column by a pin 32, and the tip of a piston rod 33 is connected to the casing 11 by a pin 34. Therefore, when the piston-cylinder unit 14 is driven, the contact pressure of the casing 11, that is, the output shaft 17, and therefore of the vanes 12 with respect to the finished floor surface G is changed.

Next, the action will be explained.

It is clear that when the traveling trolley 1 moves by itself while rotating the blades 12 of the trowel 10, the floor surface G is finished by the blades. Next, as shown in FIG. 3, the piston/cylinder unit 14 is extended to tilt the casing 11.
The driving of this piston/cylinder unit 14 is as follows:
This can be done by the program of the control section 5. Then, in FIG. 3, the contact pressure of the blade 12 with respect to the finished floor surface G located to the left of the center line C of the casing 11 becomes higher than the contact pressure located to the right. Therefore, when the blade 12 is rotationally driven in the direction shown by arrow A in FIG. 4 in this state, a reaction force is generated in the casing 11 in the direction shown by arrow B. The trowel (coupling arm 7) therefore pivots about the bracket 6 on the carriage in the direction indicated by arrow C. Therefore, the finished floor surface G will be treated over a wider area by the amount of rotation. It is clear that shortening the piston-cylinder unit 14 causes the trowel 10 to pivot in the opposite direction.

It is obvious that the present invention is not limited to the above embodiments. For example, the traveling truck 1 and the trowell 10 can also be connected via one universal joint. Also Trowell 1
Instead of changing the inclination angle of the casing 11, the angle of the output shaft 17 may be changed. Regarding the embodiment of the traveling truck 1, the wheels 2, 2 can also have a built-in drive source. Additionally, the tilting of the trowel and the control of the piston-cylinder unit 14 may be computer-controlled to automate the desired floor finish.

[Summary] As detailed above, according to the present invention, even if the rotation radius of the blades of the trowel is small, the trowel can turn relative to the traveling carriage, so that A wide range of floor surfaces can be finished. Furthermore, since the traveling trolley is self-propelled, unmanned operation is possible, and floor finishing work, especially concrete floor finishing, can be performed efficiently even in poor working environments.

[Brief explanation of drawings]

Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2 is a front view showing one embodiment of the present invention;
The figure is a partially cutaway plan view, FIG. 3 is a front view of the main part for explaining the operation, and FIG. 4 is a plan view thereof. DESCRIPTION OF SYMBOLS 1... Traveling trolley, 5... Control unit, 7... Connecting arm, 10... Trowel, 12... Vane, 14
... Trowel tilting means (piston/cylinder unit).

Claims (1)

[Claims] 1 Consists of a traveling trolley and a trowell coupled to the trolley so that it can turn vertically and horizontally,
The trowel includes a plurality of blades that are rotated in contact with the finished floor surface, and a trowel tilting means for locally changing the contact pressure between the blades and the finished floor surface. Features a self-propelled finisher.