JPH0320544B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a concrete floor finishing method for smoothing the surface of a semi-solidified concrete floor after concrete has been compacted after pouring and water that has seeped out from the top surface has been removed. Regarding work vehicles.

For details, see
This relates to a self-propelled type equipped with a finishing device for smoothing the surface of a semi-solidified concrete floor.

Since this type of concrete floor finishing work vehicle is self-propelled, it is equipped with a radio guidance device, an automatic traveling device, etc., which eliminates the need for workers to work on the concrete floor surface and allows workers to roughen the concrete floor surface. can be eliminated.

Conventionally, such concrete floor finishing work vehicles have been equipped with drive wheels such as wheel drive rotation,
In other words, a device is known in which a device is provided that is propelled by driving wheels rolling on a concrete floor surface (for example, Japanese Utility Model Publication No. 11395/1983).

However, in the case of the above-mentioned prior art, since the vehicle is propelled by shifting of wheels, it is inevitable that the shifting of wheels will rub and roughen the concrete floor surface.

An object of the present invention is to prevent the surface of a concrete floor from becoming rough due to driving.

A characteristic configuration of the concrete floor finishing work vehicle according to the present invention is that, in configuring the driving traveling device, grounding bodies are located before and after the finishing device and attached to the traveling vehicle body, and the grounding body is attached to the traveling vehicle body with respect to the finishing device. The finishing device is provided with an elevating means for driving up and down and a back and forth moving means for driving the grounding body back and forth with respect to the finishing device. The effects of its characteristic configuration are as follows.

For example, one of the grounding bodies located in front of the finishing device is raised, the traveling vehicle body is supported on the concrete floor surface by the finishing device and the grounding body located at the rear, and the grounding body located in front of the finishing device is supported in this state. is moved forward, the ground contacting bodies located at the front and rear are lowered, the traveling vehicle body is supported by these ground contact bodies, and in the supported state, the ground contacting bodies located at the front are moved backward, and The finishing device is moved forward by operating the forward and backward moving means in the direction of moving the grounding body located at the rear backward;
After that, the grounding body located at the rear is raised and the traveling vehicle body is supported on the concrete floor surface by the grounding body located at the front and the finishing device, and the grounding body is moved forward, which is repeated. Can move on floor surfaces.

In this way, since the vehicle moves by raising and lowering the grounding body and moving the grounding body back and forth while floating above the concrete floor surface, it does not rub against the concrete floor surface even though it is driven and travels.

Therefore, according to the present invention, it is possible to prevent the surface of the concrete floor from becoming rough due to the driving movement, thereby efficiently and accurately finishing the concrete floor surface smoothly. Now I can do it.

Hereinafter, embodiments of the present invention will be described in detail based on illustrative drawings.

As shown in FIGS. 1 and 2, the concrete floor finishing work vehicle has a finishing device 4 for smoothing the semi-solidified concrete floor surface attached to a traveling vehicle body 3 equipped with a drive traveling device 41. It is configured.

Machine frame 1 which is one of the constituent members of the traveling vehicle body 3
is a central portion 1 that serves as a mounting portion for the finishing device 4;
c, and front and rear end portions 1a and 1b attached to it so as to be slidable back and forth. And aluminum material
It is constructed from a lightweight material such as FRP, and is designed to reduce the overall weight of the traveling vehicle body 3 as much as possible, and to reduce the surface pressure applied from the ground contact portion of the drive traveling device 41 to the concrete floor surface.

The driving traveling device 41 has sled-like grounding bodies 40 attached to both left and right ends of the front and rear end portions 1a, 1b of the machine frame 1 so as to be able to move up and down, and drives the sled-shaped grounding bodies 40 with respect to the finishing device 4. It is constructed by providing an elevating means for elevating and lowering, and a back-and-forth moving means for driving and moving the sled-like grounding body 40 back and forth.

The fore-and-aft movement is achieved by attaching a screw shaft 43 to each of the front and rear end portions 1a, 1b so that it can be rotated freely by an electric motor 42, and by attaching the screw shaft 43 to the central portion 1c so as to be freely threadable. The end portions 1a and 1b are configured to move forward and backward with respect to the center portion 1c by driving rotation of the motor 42.

The elevating means includes an electric motor 44 attached to each of the left and right ends of the end portions 1a and 1b, and a screw shaft 43 coupled to the motor 44 so as to be able to move up and down only by the drive rotation of the motor 44. ...Attach the sled-shaped grounding body 40 to the lower end of each,
Due to the drive rotation of the motor 44..., the sled-shaped grounding body 40
...Each is configured to move up and down between a ground contact position and a non-ground contact position.

The finishing device 4 is mounted so as to be movable back and forth along two guides 46 in the left and right directions provided in the central portion 1c, and its left and right movement allows it to finish the surface over the entire left and right width of the vehicle body. ing.

In addition, the finishing device 4 attaches three finishing blades 20 with different phases in the circumferential direction to the lower end of the drive rotation shaft 19 facing in the vertical direction, and rotates the drive rotation shaft 19. The structure includes a motor 22 for causing the motor to move.

The blade body 20 is made of a leaf spring material.

The case 22a of the motor 22 is attached to a support base 47 that is driven and moved along the guide 46 so as to be rotatable only around the vertical axis.

In addition, the concrete floor finishing vehicle is in a state in which a worm 50 driven by an electric motor 49 is engaged with a worm wheel 48 connected to the case 22a of the motor 22, and the finishing device 4 is moved to the left and right center. Then, the blade body 20 is grounded to support the entire load of the traveling vehicle body 3, and in this state, the motor 4 is
9 is driven to turn the traveling vehicle body 3.

In addition, the concrete floor finishing work vehicle has a finish detection sensor 30 on the end portion 1b that detects the finishing state of the concrete floor after surface finishing work.
It is configured to detect cases of poor surface finish, re-finish the surface based on the detection, and ensure that the entire concrete floor is finished well.

Reference numeral 31 in the figure is a magnetic sensor, which effectively utilizes each of the vertical and horizontal reinforcements arranged in the concrete floor, counts the number of vertical and horizontal reinforcements passed through as the vehicle travels, and calculates the total number of horizontal reinforcements for the entire concrete floor based on that. It is configured so that the position of the traveling vehicle body 3 can be detected.

32 is an input antenna for inputting a driving route for automatic driving.

In the concrete floor finishing vehicle having this configuration, the ground pressure of the finishing device 4 is adjusted by raising and lowering the sled-like grounding body 40.

Next, the traveling mode of the concrete floor finishing work vehicle will be explained.

In the initial state, the left and right sled-shaped grounding bodies 40, 4 on the rear side
0 and the vanes 20 (see A in Fig. 2), and in that state, after raising the left and right sled-shaped grounding bodies 40, 40 on the front side, the front end portion 1a is Let it slide and protrude (see B in Figure 2). The front and rear left and right sled-like grounding bodies 40 are driven down or raised to maintain the blade bodies 20 in a horizontal position at a predetermined height, and then the front end portion 1a is slid and retired and the rear end is moved. The blade bodies 20 are moved by the sliding protrusion of the side portion 1b (see C in FIG. 2). Only at this time, the finishing device 4 is driven while moving in the left and right direction to perform surface finishing work.
Note that various horizontal sensors may be used to maintain the blade bodies 20 in a horizontal posture. After that, the front sled-like grounding bodies 40, 40 and the blade body 20
As a result, the vehicle body is supported on the ground, the rear sled-like grounding bodies 40 are raised, and the rear end portion 1b is slid and retired to return to the initial state. These operations and the above-mentioned turning are repeated to perform surface finishing work on the entire concrete floor.

An example of the work format will be explained (see FIG. 3).

Separated work areas A, B, with concrete floor
For C and D, a water absorption work vehicle W ₁ equipped with a water absorption device 33 is driven by remote control operation,
Suction and collect water on the surface of the concrete floor.

Hardness sensor S ₁ installed on water absorption work vehicle W ₁
The detection results from the position sensors S ₂ that detect the positions in each of the work areas A, B, C, and D are input to the arithmetic processing unit H, and the detection results are input to the processing unit H.
In each D, a continuous running route from the hard side to the soft side of the concrete floor surface is calculated.

Based on the calculation of the travel route, a corresponding electric signal is input to the concrete floor finishing vehicle, and the finishing vehicle W ₂ automatically travels along the travel route while confirming the position using the magnetic sensor 31. and finish the surface of the concrete floor.

Another embodiment of the invention is shown below.

As shown in FIGS. 4 and 5, a support arm 13 is located on the outer side of the finishing device 4 in the longitudinal direction and is connected to the machine frame 1 so that the support arm 13 can freely swing up and down about the left-right axis of the vehicle body. A sled-like body 14 extending over the entire width of the traveling vehicle body 3 is pivotally connected to the sled-like body 14, and a compression coil spring 1 is attached to the back of the sled-like body 14 across the machine frame 1.
5... may be attached, and as the sled-shaped body 14 is pressed to the ground and travels, it may be improved so that the traces of the finishing device 4 are erased.

In this improvement, a pair of left and right support rods 16, 16 are connected to the sled-like bodies 14, 14, respectively, and each of the support rods 16, 16 is provided on the machine frame 1 so as to be movable up and down.
The support arm 17 connecting the upper ends of the support rods 16, 16 is provided with a screw shaft 18 that lifts it by contacting it from below.
An electric motor 18a is interlocked with the screw shaft 1.
Only one of the sled-like bodies 14, 18 is raised, and only the sled-like bodies 14, 14 located on the rear side in the traveling direction are pressed to the ground.

As shown in FIGS. 6 and 7, the finishing device 4 includes three blades arranged at different phases in the circumferential direction at the lower ends of each of the left and right pair of driving rotation shafts 19, 19 facing in the vertical direction. Attach the finishing blade body 20...
Gears 21, 21 are engaged with each other so as to be able to rotate integrally with the two rotating shafts 19, 19, respectively, and the electric motor 22
a small-diameter gear 23 interlocked with the rotating shafts 19, 1;
A gear 19a integrally and rotatably connected is engaged with one of the wheels 9, and both rotating shafts 19, 19 are rotated in opposite directions to each other, so that finishing equipment can be performed while minimizing adverse effects on running. It's okay if it's something.

In addition, in this finishing device 4, each of the drive rotation shafts 19, 19 is spline-fitted to the gears 21, 21 so as to be slidable only, and the drive rotation shaft 1
9 and 19 are held in a holder 24 so as to be able to rotate only freely, and a pair of screw shafts 25 and 25 are interlocked and connected to each other so as to be able to move up and down between the holder 24 and the machine frame 1, and an electric motor 25a is attached to each of the screw shafts 25 and 25. are connected in an interlocking manner, and by raising and lowering the screw shafts 25, 25, the vertical position of the blade bodies 20, 20 with respect to the traveling vehicle body 3 is changed, and the ground pressure of the blade bodies 20, 20 against the concrete floor surface is adjusted. has been done. And the front chrysanthemum blade body 20... is attached to each of the rotating shafts 19, 19 in the same phase in plan view,
The rotary trajectories of the tips of the left and right blade bodies 20 intersect with each other, so that a good surface finish can be achieved over the entire left and right width of the vehicle body.

Furthermore, as shown in FIG. 8, the finishing device 4 includes three rotating shafts 19 driven by a motor 22.
The blade body 20 may be attached to each of the blade bodies 20.

In the present invention, as shown in FIG. 9, a loop-shaped rod 27 for collision prevention may be provided all around the machine frame 1.

In addition, a pressure-sensitive sensor 28 is provided at a predetermined location of the attachment portion of the loop-shaped rod 27 to the machine frame 1 to detect when the loop-shaped rod 27 collides with another object. The vehicle may be configured to automatically stop running.

The present invention can be applied to the surface finishing of various concrete floors such as buildings, gas stations, and parking lots.

Further, the present invention may be configured such that the traveling vehicle body 3 is provided with a driver's seat and is configured for regular use.

[Brief explanation of the drawing]

1 and 2 show embodiments of the present invention;
The figure is a perspective view, FIGS. 2A, 2B, and 2C are side views showing a running mode, FIG. 3 is a plan view showing an example of a working mode, and FIGS. 4 to 9 are different views of the present invention. 4 is a side view of the main part, FIG. 5 is a rear view of the main part, FIGS. 6 and 8 are schematic plan views of the finishing device, and FIG. 7 is a front view of the main part with a cutout. 9 are schematic plan views. 41... Drive traveling device, 3... Traveling vehicle body, 4...
...Finishing device, 40...Grounding body.

Claims (1)

[Claims] 1. A concrete floor finishing work vehicle in which a finishing device 4 for smoothing a semi-solidified concrete floor surface is attached to a traveling vehicle body 3 equipped with a driving traveling device 41, and the driving traveling device 41 comprises: A grounding body 40 is located before and after the finishing device 4 and attached to the traveling vehicle body 3, and the grounding body 40
This concrete floor finishing work vehicle is provided with a lifting means for driving up and down the grounding body 40 relative to the finishing device 4 and a back and forth moving means for driving the grounding body 40 back and forth with respect to the finishing device 4.