JPH0327703B2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" In general, steel frame, reinforced concrete, and reinforced concrete frame construction includes major works such as steel frame work, reinforcing bar work, formwork work, and concrete work. However, the present invention relates to a concrete leveling device that is applied to concrete work.

"Conventional Technology" The concrete work described above can be roughly divided into mixing, mixing, transporting, distributing, compacting, leveling, finishing, and curing of cement, water, and aggregate.

Currently, the work mentioned above can be rationally solved using automated plants, truck mixers, etc., but most of the work mentioned above relies on human power, with the exception of pump trucks for pump pressure feeding.

In other words, in conventional concrete work, concrete is pumped using a pump truck and distributed to the pouring site, and once the distribution is completed, workers use rake tools such as dragonflies to move the excess concrete. Check the approximate level by visual inspection. The main purpose of this work is to adjust the amount of concrete.

Next, the plasterer uses a level meter to level parts of the concrete at intervals of about 2 meters, and in between, rubs the concrete surface with a fixed piece of wood (for example, made of aluminum) to level the entire concrete and flatten the surface. I will finish it.

During this time, all work was done manually, and it was dirty work and heavy work using difficult-to-handle concrete, which not only resulted in poor work efficiency but also required a lot of effort and time, but the efficiency and level accuracy were not always high enough. There are some bad problems.

"Problems to be Solved by the Invention" The present invention is an automated concrete leveling device obtained as a result of studies in view of the above problems.
The purpose of this is to improve concrete leveling work, which traditionally relied on human power, and to not only save labor, but also ensure stable accuracy and improve efficiency.

"Means for Solving the Problems" That is, the present invention includes a main body having a substantially flat plate shape, a movement mechanism for the entire device, and a concrete leveling mechanism, and the movement mechanism moves from the center of the main body to a concrete leveling mechanism. An extendable swivel table for changing direction that is vertically installed;
A pair of walking legs are vertically movable relative to the main body, and a pair of walking legs are suspended downward from the main body through a longitudinal sliding mechanism and move intermittently,
On the other hand, the concrete leveling mechanism is a unit that is reversibly attached to the front end of a swing arm that is supported by the main body via a swing mechanism, and is driven and rotated in a direction that pushes concrete forward as it is reciprocated on a horizontal surface. The above-mentioned problems were solved by forming the screw with a directional rotating screw and a vibration/concrete finishing plate attached to the rear part of the screw in the swing direction.

"Function" The concrete leveling device of the present invention maintains the level with a moving mechanism, pushes the concrete distributed to the pouring site forward with a unidirectional rotating screw, and moves the leveling mechanism on a horizontal plane with a swing arm. and finish the surface with a vibrating and concrete finishing plate. After leveling the surface of a predetermined width in this way, half of the walking legs in the moving mechanism, that is, four legs in the illustrated example form a pair, so first, two legs on one diagonal are
The legs are pulled upward by the vertical movement mechanism, moved forward by the slide mechanism, and then lowered, and then the other two legs on the diagonal are pulled upward by the vertical movement mechanism and the slide mechanism in the same manner as described above, and moved forward. After being moved, the device is moved forward in an intermittent motion by lowering and then sliding the body forward through each slide mechanism. In other words, while ensuring independence with one of the two diagonal legs, the other leg takes off, moves, and lands.

Further, the direction change is performed by an extendable swivel supporting the main body in place of the walking legs, and rotating the main body with all the walking legs pulled upward.

Further, the concrete leveling mechanism reciprocates on a surface at a predetermined angle.

When the concrete leveling mechanism moves backwards, the axial direction of the screw is reversed and rotated in the opposite direction to push the concrete forward, and the position of the vibrating and concrete finishing plate is adjusted relative to the swing direction. This is the rear part of the screw, and the concrete is leveled with a reciprocating swing.

``Embodiment'' An embodiment of the present invention will be described below in detail based on the drawings. As shown in FIGS. 1 to 6, the main body 1 formed in a flat plate shape and the entire device are moved. moving mechanism 2 for concrete leveling and concrete leveling mechanism 3
The main parts are:

At the center of the upper surface of the main body 1, there is a swing mechanism 4.
is rotatably installed upright, and the swing mechanism 4
A swing arm 5 is fixed to and extends forward from the main body 1 by a desired length.

A guide portion 6 such as a roller is provided on the lower surface of the swing arm 5 at a desired distance forward from the center of rotation, and a guide portion 6 such as a roller is provided on the upper surface of the front portion of the main body 1.
The guide portion 6 is attached to an arc-shaped guide rail 7 laid along a virtual circle centered on the swing mechanism 4.
The engagement is guided.

Further, a drive source (not shown) consisting of a motor etc. for the swing mechanism 4 is disposed at the rear end of the swing arm 5, and is configured to automatically switch between forward and reverse rotation at a predetermined rotation angle. The swing arm 5 is formed to swing back and forth at a predetermined angle, for example 180 degrees.

The moving mechanism 2 includes one extendable swivel base 9
and a pair of four walking legs 10, 10',
10'', 10, and so on.

That is, the swivel base 9 has a main pillar 9b that is extendable and retractable upright from the center of the upper surface of a circular base 9a that has sufficient strength to support and rotate the entire device, and the main pillar 9b is connected to the main body 1. By rotatably supporting the center of the main body 1, the main body 1 is vertically disposed at the center of the lower part of the main body 1. This swivel base 9 uses a motor as a rotational drive source, but a dedicated motor may be provided in the swivel base 9 or the main body 1, or,
The motor of the upper swing mechanism 4 may be shared.

On the other hand, the walking legs 10, 10', 10'',
Numerals 10 are located on the lower surface of the main body 1, and are hung downward from the vicinity of each corner of the main body 1 in order to support the entire device with good stability. Each leg 1 can move the entire device forward by moving.
0 to 10 are provided with a vertical movement mechanism 11 and a longitudinal sliding mechanism 12.

In other words, each of the legs 10 to 10 is formed by fixing a circular walking foot 14 to the lower end of each main pillar 13, and the upper end of the main pillar 13 is connected to an upper and lower end formed by a cylinder or the like. It is coaxially attached to the moving mechanism 11. Although not shown, the above-mentioned main column 9b is also equipped with a mechanism similar to the vertical movement mechanism 11, thereby making the swivel base 9 extendable and retractable.

Moreover, each of the above-mentioned longitudinal slide mechanisms 12 is
A screw rod 15 is installed on the lower surface of the main body 1 so as to be long in the front-rear direction and can only rotate while preventing movement in the axial direction.
The block 16 attached to the upper end is non-rotatably screwed onto the exterior, and the screw rod 15 is rotated forward or backward by a motor 17 arranged to interlock the screw rod 15. is moved forward or backward to change the relative position of the legs 10 to 10 and the main body 1, thereby making the device movable.

Here, as clearly shown in FIGS. 5A and 5B, the walking foot 14 in each of the leg parts 10 to 10 has a substantially downward cup shape, and has a horizontal circular top plate 14a and a skirt part hanging from the periphery thereof. 14b, and when leveling the concrete, the concrete a and the skirt part 14b are formed as shown in A of the same figure.
However, when finishing the concrete A floor, as shown in FIG. The contact surface has been changed from the above-mentioned line contact to surface contact to reduce the ground pressure.

In other words, when finishing a concrete floor, the walking feet 14 are used to prevent unevenness from forming on the concrete surface.

Here, the adapter 14d is made of a lightweight material such as expanded polystyrene resin.

Furthermore, the concrete leveling mechanism 3 is formed by a one-way rotating screw 18 and a vibration/concrete finishing plate 19.

The one-way rotary screw 18 is rotatably supported in a support frame/cover 20 which is long in the front/rear direction and is formed with an open bottom. It is driven and rotated by a motor 21 fixedly installed above. On the other hand, the vibration/concrete finishing plate 19 is attached to the support frame/cover 2 along one side of the unidirectional rotating screw 18 so as to be at the rear with respect to the swing direction of the unidirectional rotating screw 18.
It is attached to the side of 0. The vibration/concrete finishing plate 19 has the same length as the one-way rotating screw 18 and is installed horizontally, so that the center portion of the support frame/cover 20 is positioned below the swing arm 5. The swing arm 5 is rotatably supported on a horizontal plane by the curved tip thereof, and can be rotated 180 degrees with respect to the extension line b of the swing arm 5 by a motor 22.

That is, when the concrete leveling mechanism 3 is swung back and forth, the unidirectional rotating screw 18 precedes the vibrating and concrete finishing plate 19 with respect to the swing direction, and pushes out excess concrete in areas higher than the standard level, Next, a vibrating/concrete finishing plate 19 can be rotated forward and reverse to level the surface.

Further, the level of the apparatus is maintained by the vertical movement mechanisms 11, .

In FIG. 6, 23 indicates a level transmitter attached to a pillar 24 or the like at a concrete construction site, and 25 indicates a control box.

In the above configuration, when using this to level the poured concrete a, the device is installed at the starting point of concrete work, and the level of the device is maintained by the moving mechanism 2.

As shown in Fig. 6, the placed concrete a is compacted and roughly leveled using a vibrator, etc., and then the device is operated, but each part of the device is controlled and operated by the control box 25. remote control.

First, when the one-way rotary screw 18 of the concrete leveling mechanism 3 is rotated, the excess concrete distributed by the screw 18 is pushed forward, so that the surface of the concrete becomes the standard level, but if it continues as it is, Since the surface is uneven, when the concrete leveling mechanism 3 is then swung on a horizontal plane by the swing mechanism 4, the vibration/concrete finishing plate 19 that follows the one-way rotating screw 18 presses the concrete surface. As it moves, it is possible to flatten the bare surface while eliminating small holes, small waves, etc., and it also presses down excess water in the concrete to make the surface hard and finish.

By swinging the concrete leveling mechanism 3 in one direction, leveling and finishing is performed in an arc shape along the swing radius of the swing arm 5 by a width corresponding to the length of the leveling mechanism 3. The swing is stopped at , and among the four legs 10 to 10, two legs on one diagonal are moved to the respective vertical movement mechanisms 11.
After pulling it upwards, it is moved forward by the front-back sliding mechanism 12, and then pulled down, and then the other two diagonal legs are moved forward in the same manner as described above. Then, the main body 1 is moved forward by each swing mechanism 12 . As a result, concrete leveling mechanism 3
has been moved forward together with main body 1.

Next, the leveling mechanism 3 is operated by the motor 22.
Flip 180 degrees. In other words, this is because the positions of the unidirectional rotating screw 8 and the vibration/concrete finishing plate 19 in the leveling mechanism 3 are opposite to the above-mentioned with respect to the swing direction, and because the screw 18 is unidirectionally rotating. This is so that when swinging in the opposite direction to the above, the concrete can be pushed forward in the same way as above.

Next, when the leveling mechanism 3 is swung by the swing mechanism 4 by a desired angle in the opposite direction to that described above, the concrete can be leveled and the surface can be finished in the same manner as described above.

Thereafter, by repeating the above operations, the poured concrete can be leveled and surface finished over a predetermined width.

Further, the direction change of the device is performed by pulling the walking legs 10 to 10 of the moving mechanism 2 upward by the respective vertical movement mechanisms 11 with two or more legs in contact with the ground necessary for stable self-supporting, and at the same time pulling the walking legs 10 to 10 of the moving mechanism 2 upward by the sliding mechanisms 12, . By moving the base plate 9a and forming a landing space, it can be rearranged and supported on the swivel table 9, and rotated by a motor.

"Effects of the Invention" As explained above, the concrete leveling device according to the present invention is constructed so that the moving mechanism 2
The lifting and moving of the walking legs 10 to 10 and the movement of the main body 1 are performed intermittently, and the swivel base 9
to change direction by supporting swing arm 5.
The leveling mechanism 3 is reciprocated on a horizontal surface by
The unidirectional rotating screw 18 and the vibrating/concrete finishing plate 19 make it possible to mechanize the leveling work (leveling) of poured concrete, improving the leveling work that conventionally relied on manual labor. Not only can it save labor,
By maintaining the level of the device itself with the moving mechanism 2 and determining the reference level of the concrete surface with a level transmitter, etc., it is possible to ensure a stable level of accuracy, and it is also possible to control and operate the device. Since it is possible to adopt a remote control method, it is possible to improve the leveling work.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of an embodiment of a concrete leveling device according to the present invention, Fig. 2 is a plan view of the embodiment, and Fig. 3 is a side view of the embodiment.
FIG. 4 is a front view of the same embodiment, FIGS. 5A and 5B are longitudinal sectional side views showing the walking legs of the moving mechanism in the same embodiment in a usage state, and FIG. 6 is a usage state of the same embodiment. FIG. 1...Main body, 2...Movement mechanism, 3...Concrete leveling mechanism, 4...Swing mechanism, 5...Swing arm, 9...Swivel base, 10, 10', 1
0'', 10... Pair of walking legs, 11... Vertical movement mechanism, 12... Slide mechanism, 18... One-way rotating screw, 19... Vibrating and concrete finishing plate.

Claims (1)

[Claims] 1. It comprises a main body having a substantially flat plate shape, a movement mechanism for the entire installation, and a concrete leveling mechanism, and the movement mechanism is an extendable pivot for changing direction, which is hung downward from the center of the main body. The concrete leveling mechanism consists of a stand, and a pair of walking legs that move intermittently downward from the main body through a vertical movement mechanism and a front-back sliding mechanism, respectively, with respect to the main body. , a one-way rotating screw that is reversibly attached to the front end of a swing arm that can be supported by the main body via a swing mechanism, and that drives and rotates in a direction to push forward concrete that is reciprocated on a horizontal surface; A concrete leveling device comprising a vibrating and concrete finishing plate attached to the rear part in the swing direction.