JPS60105754A - Concrete floor finishing work vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a method for smoothing the surface of a semi-solidified concrete floor after concrete is compacted 1 after concrete placement and after removing water that has seeped out from the top surface. Regarding floor finishing work vehicles.

Conventionally, in order to perform the above-mentioned finishing work, three or two rotary blades are interlocked and connected to an engine-driven power body, a handle is extended from the power body, and the blades are grounded to drive the rotary blades. The best thing to do is to find a finishing machine (product name: Nitrowell) that eliminates unevenness.

However, in order to steer a top finishing machine, the power body is tilted with a handle, the ground contact position of the rotary blades is changed, and the ground reaction force is utilized. [7] Also, there was a drawback that it was difficult to perform high-precision finishing.

Further, there are drawbacks in that vibrations are transmitted to the worker via the rotary blades, and worker fatigue increases due to long hours of work in an unstable posture, as well as occupational diseases.

In view of the above points, the present invention has been developed to enable the surface finishing work of concrete floors to be carried out with high accuracy, ease and ease. The purpose is to significantly improve efficiency.

In order to achieve the above object, the concrete floor finishing work vehicle according to the present invention includes a traveling vehicle body K equipped with a driving traveling device, a finishing device for smoothing the semi-solidified concrete floor surface, and at least one of the traveling vehicle bodies. The present invention is characterized in that a bridge-like body is attached to the rear side in the traveling direction to erase the traces of the finishing device.

This characteristic configuration has the following effects.

In other words, the surface of the concrete floor is finished by the finishing device attached to it by driving the vehicle by repeatedly steering the vehicle, and then, immediately after finishing the surface, the final finish is applied by the bridge-like body. Do it.

Therefore, as a result of the above action, the following effects are achieved.

In other words, by attaching the finishing device to the vehicle body at a predetermined height, the level of the finishing device relative to the concrete floor surface can be maintained at a substantially constant level, and the vehicle body must be steered for steering. It is possible to even out the ground pressure applied to the concrete floor surface from the finishing device without requiring any skill, such as using ground reaction force.
Perform surface finishing work on concrete floors with high precision and
It has become easy and effortless.

Furthermore, by automatically running the traveling device, it is possible to avoid adverse effects on workers caused by minute vibrations transmitted through the finishing device, and even if they are on board the traveling vehicle, there is no harm to the workers. There are few negative effects, and since the user only needs to steer the traveling device, work can be done in an appropriately comfortable posture, and the occurrence of occupational diseases can be reliably prevented.

In addition, the final finishing work, which was conventionally done manually using a metal trowel, can be done all at once, saving labor and greatly improving work efficiency, shortening the construction period and cost. Now it is possible to reduce both.

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

A crawler type traveling device (2) is installed after each IIT of the machine frame (1).
.

(2) A driving traveling vehicle body (3) equipped with a front and rear traveling device +
A finishing device (4) for smoothing the semi-solidified concrete floor surface is installed between 21 and 21 to form a concrete floor finishing work vehicle.

The crawler type traveling devices +21, +21 are each constructed by winding a wide rubber 4M crawler belt (6) with a smooth outer surface around a pair of front and rear rollers f51, +51, and the front and rear rollers f51, +51, +51, ．． 1
An electric motor (8), which can freely rotate in forward and reverse directions, is interlocked and connected to one side of each of the motors 51 via a belt-type transmission mechanism (7).

The crawler type traveling device (2), the belt type transmission mechanism (7)
) and the motor (8) are integrally mounted on the support frame (9), and are located approximately in the center in the left-right direction of the vehicle body,
It is rotatably attached to the support frame (post 0 [a bracket connected to the machine frame (1)) (la) protruding from 91, and a sector gear α1)' is connected to the post αe. In addition, a small diameter gear (
12a) is engaged with the sector gear (111, and has a pair of front and rear running motors +81, +8) and a steering motor Q.
2, (121) are configured to move forward and backward in a desired direction by driving each of them.

The above-mentioned p-ra type traveling device (21, (21) is located on the outer side in the longitudinal direction and is connected to the machine frame (1) with a support arm a3... that swings up and down around the left-right axis of the vehicle body. A bridge-like body stop that spans the entire left and right width of the vehicle body is pivotally connected, and a compression coil spring is attached to the back of the bridge-like body (141) across the machine frame (1). α
As the vehicle travels with its hands pressed against the ground, traces of the finishing device (4) and travel traces of the traveling devices fil and +21 are erased.

In addition, a pair of left and right support rods are provided on each of the comb-like bodies α and α.
mark, αe is connected, and its support rod α61
, (1G+ are each provided on the machine frame (1) so as to be able to rise and fall freely, and the support rod (1B+, αe) is a screw that lifts it up by abutting it against the support arm aη connecting the upper ends of each αe from below. A shaft Q81 is provided, an electric motor (18a) is interlocked therewith, and a double screw shaft 08 is provided.
+ , (only one of 181 is operated to raise, M
Of the nine layers of both bridge-like bodies, only the one located on the rear side in the traveling direction is configured to be grounded under pressure.

The finishing device (4) has three finishing blades mounted at different phases in the circumferential direction at the lower ends of the pair of left and right drive rotation shafts +19+ and Q91 facing in the vertical direction. It consists of nine. Both rotating shafts 091, ae
Gears (211, @ are connected to each other so as to freely rotate together, and both gears 21+ and (211) are engaged with each other,
In addition, a small diameter gear (23) interlocked with the electric motor (2) is engaged with a gear (19a) integrally rotatably connected to one of the two rotating shafts 19) and Q9, and both rotating shafts α9. The Q9s are rotated in opposite directions to allow finishing work to be carried out while minimizing adverse effects on travel.

tln said drive rotation axis Q9), as each said gear factor).

(Company) are fitted with splines so that they can only slide freely, and the drive rotation @I + Q9) and Q91 can be held in the holder (goods) so that they can only rotate freely, and the holder (goods)
and machine frame fi+, a pair of screw shafts 6151. (A) are interlocked and connected so that they can be raised and lowered, and an electric motor (25a) is interlocked and connected to each of the screw shafts (A) and (C), and the raising and lowering operation of the screw shafts (A) and (C) causes the A ground pressure adjustment mechanism (to) is configured to change the vertical position of the blade body (20+) with respect to the traveling vehicle body (3) and adjust the ground pressure against the concrete floor surface by the blade body example (20+). Each of the blade members is made of a leaf spring material.

The above blade bodies are attached to the rotation axes arm and Q91 in the same phase in a plan view, and the rotation trajectories of the tips of these blade bodies are different from each other as shown in Fig. 1. They intersect with each other and are configured so that surface finishing can be performed satisfactorily over the entire width of the left and right sides of the vehicle body.

The machine frame (fl) is made of lightweight materials such as Fi, aluminum and FRP, reducing the weight of the entire traveling vehicle body (3) as much as possible, and reducing the surface pressure applied to the concrete floor surface from the crawler belts +61 and +61, respectively. It is designed to effectively prevent damage to the surface of the concrete floor, such as flaking off during driving.

In the figure (a), a loop-shaped rod for preventing collisions is provided all around the machine frame (1).
1) At a predetermined location on the mounting part, there is a pressure-sensitive sensor (■) that detects a hole caused by the rod (■) colliding with another object.

(3) is attached, and the detection results from this pressure sensor track are input to the drive control unit described later, and the driving motors f81 and +8+ are automatically stopped when a collision with another object is detected. It is configured.

Finishing detection sensor (to) located on the outer side in the front and back direction of each of the bridge-like bodies (14) and (141) to detect the finished state of the concrete floor after surface finishing work.
It is configured to detect cases of poor surface finish (1 to 1) and re-finish the surface based on the detection, so that the entire concrete floor can be reliably finished with a good surface finish.

ell) in the figure is a magnetic sensor that 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 based on that, the concrete floor It is constructed so that the position of the traveling vehicle body (3) relative to the whole can be detected.

The drive control unit controls the driving motors [81, +81, steering motors O, aa,
Finishing device (4) Drive motor and toothpick 0
4) Motor (18g) for raising.

(18a) Each of them is controlled and operated to automatically travel along a predetermined route. (To) asks questions about the above (see Figure 6).

■ Separated work area fA3, I with concrete floor
B.I.

(For C1 and (D), a water absorption work vehicle (Wl) equipped with a water absorption device (to) is run by remote control operation,
Suction and collect water on the surface of the concrete floor.

■ Hardness sensor (
Sl) and the working area [Al, fB+, (c+,
(Position sensor (S) that detects the position in each nl
l) Input the detection results from each to the arithmetic processing unit (incorporated) and calculate a continuous travel route from the hard side of the concrete floor surface to the soft 4AIK for each work placement 1 (811+C1@(Dl).

■ Based on the above calculation of the travel route, a corresponding electric signal is input to the drive control unit ■, and the magnetic sensor (3
11. Check the position of the finishing work vehicle (W- in front of P).
It runs automatically according to the travel route and finishes the surface of the concrete floor.

FIGS. 7 and 8 show another embodiment, in which a traveling device is constructed by providing a pair of left and right grounding rollers on the front and rear of the machine frame (1), respectively. A traveling motor (8), left and right rollers, and Cl41 are interlocked and connected via a bevel gear type transmission mechanism (toward).

Lower cylindrical part (8a) of the motor (8) on the front side of the vehicle body
) and left and right rollers (goods), support brackets for (goods) (to)
are integrally connected, and the case lower cylindrical part (8a
) is attached to the support frame (support) so that it can only rotate freely with a vertical shaft core cylinder, and the case lower cylindrical part (8a) and the steering motor (2) are connected via a gear type transmission mechanism (to). They are linked together. The finishing device (4) has three rotating shafts a
9...Constructed by attaching a feather wing to each. This finishing work vehicle performs finishing work by moving forward, and is provided with a bridge I only on the rear side.
Although not shown.

A ground pressure adjustment mechanism (a) similar to the first embodiment is attached.

FIG. 9 and FIG. 10 show other embodiments, and show a running vehicle body (
3) On the front side, there is an electric motor +8), ff21 K
Therefore, the crawler type traveling device (2
), and on the other hand, three support rods are attached to the rear side so as to be slidable up and down, and the support rods (
A) An oak-like body α is connected to the lower end of the supporting rod (
) are integrally connected via a pair of upper and lower connecting rods IB, 0υ, and a rack (42) is formed on the middle one (40a) of the central support rod (a). An electric motor is provided to drive and rotate a pinion gear that engages with the rack, and as the bridge body aa moves up and down with respect to the vehicle body (3), the level of the blade body with respect to the concrete floor surface is changed to increase the ground pressure. The bridge body αa is also configured to serve as a ground support for the traveling vehicle body +31K.

The present invention can be applied to the surface finishing of concrete floors in buildings, gasoline warehouses, parking lots, etc.

Further, the present invention may be configured to be a riding type vehicle by providing a driver's seat in the traveling vehicle body (3).

Further, the traveling device may be equipped with low-pressure tire wheels.

The crawler belt (6) is not limited to rubber;
For example, various structural modifications are possible, such as constructing an endless band by connecting a large number of narrow iron pieces or FRP pieces with Teflon coating on their outer surfaces so that they can swing freely in the width direction. It is.

[Brief explanation of drawings]

The drawings show an embodiment of the concrete floor finishing work vehicle of the present invention, in which Fig. 1 is a partially omitted overall perspective view, Fig. 2 is a partially omitted side view, and Fig. 8 is a crawler type traveling device and its steering. A side view of the structure, Fig. 4 is a partially cutaway rear view of the bridge-like body, Fig. 5 is a partially cutaway front view showing the finishing device and ground pressure adjustment mechanism, and Fig. 6 is a schematic plan view for explaining the working form. 7 is a partially omitted overall perspective view showing another embodiment, FIG. 8 is a partially cutaway rear view of the main part of FIG. 7, and FIG. 9 is a schematic side view showing another embodiment. FIG. 10 is a sectional view taken along the line I-X in FIG. 9. +21, C15)... Drive traveling device, (3
)... Running vehicle body, (4)... Finishing device, I... Bridge-like body. Agent Patent Attorney Osamu Kitamura Continued from page 1 0 Inventor Yama 1) Hiromichi 8, Ginza, Chuo-ku, Tokyo
Inside Kyoto main store

Claims (1)

[Claims] ■ Drive traveling bag flf21. (To) A running vehicle body (
3), a finishing device (4) for smoothing the semi-solidified concrete floor surface is installed, and the traveling vehicle body (
3) at least on the rear side in the running direction, the finishing device (
4) A concrete floor finishing work vehicle, characterized in that it is equipped with a bridge-like body I for erasing the traces of the action. (2) The concrete floor finishing work vehicle as set forth in claim 0, wherein the small bowl-shaped body a is also used as a ground support for the traveling vehicle body (3).