JPH0327704B2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" Generally, in reinforced concrete frame construction,
There are major works such as reinforcing steel work, formwork work, concrete work, etc., and the present invention relates to a concrete leveling device that is applied to concrete work.

"Prior Art" 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.

Conventionally, in the above-mentioned concrete work, the concrete is pumped using a pump truck and distributed to the pouring site, and when distribution is generally 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 approximately 2 meters, and in between, rubs the concrete surface with a fixed piece of aluminum or other wood to level the entire area and finish the surface evenly. .

During this time, all the work was done manually, and it was dirty work and heavy work using difficult-to-handle concrete, so it was not only difficult to work, but also required a lot of effort and time, but efficiency and level accuracy were necessary. There are definitely some problems.

"Problems to be Solved by the Invention" The present invention has been developed as a result of studies in view of the above-mentioned problems, and has resulted in an automated, self-propelled concrete leveling device that eliminates the traditional reliance on human power. The purpose is to improve concrete leveling work, not only to save labor, but also to ensure stable accuracy and improve efficiency.

``Means for Solving the Problems'' That is, the present invention consists of a trolley body equipped with a running section consisting of a crawler with a rectangular concave portion on both sides of which an adapter can be freely attached and detached for surface contact with concrete made of styrofoam resin, etc.; , a swivel table supported vertically and rotatably at the center of the main body so that the main body can be lifted and supported and the direction can be changed; A concrete leveling mechanism consisting of a diaphragm/finishing plate horizontally attached to the side, reversibly attached to a swing arm extending forward from the swivel table, and swinging back and forth on a horizontal surface, and a vibrator. The above-mentioned problems have been solved by constructing a screed which is pivotally supported by a swing arm extending rearward from the swivel table and swings back and forth on a horizontal surface. "Operation" The concrete leveling device of the present invention first rotates the one-way screw, and when the leveling mechanism is swung in one direction by the swing arm, the excess concrete distributed by the one-way screw is pushed forward. The surface of the concrete is leveled by a vibrating plate and finishing plate that follows the one-way screw. After swinging the leveling mechanism to a predetermined angle, the leveling mechanism is reversed 180 degrees to change the direction of the one-way screw and to change the position of the diaphragm/finishing plate with respect to the one-way screw. Next, when the leveling mechanism is swung in the opposite direction to the above,
The surface of the concrete can be leveled in the same manner as described above.

Furthermore, since the running section is continuously driven, concrete leveling work can be performed continuously by moving the leveling mechanism forward while swinging as described above.

Further, the direction of the device is changed by pushing the swivel table downward to lift the main body and the running portion, and then rotating the device by the swing and direction change motor. Furthermore, any traces left by the running part on the concrete surface after the equipment is moved are corrected by a screed provided at the rear of the swing arm as the equipment moves.

``Example'' Below, an example of the present invention will be described in detail based on the drawings. As shown in FIGS. The main parts include a screed mechanism 4, a screed 5, and swing arms 6 and 7.

The traveling section 2 is formed by crawlers 2a, 2a with rectangular recesses disposed on both left and right sides of the main body 1, and is driven and rotated by traveling motors 2c, 2c connected in conjunction with respective drive shafts 2b.

The square recessed crawlers 2a, 2a are made of hard rubber or the like, and the endless belt 2a is made of hard rubber or the like.
A large number of square recesses 2e, . For example, an adapter 2f molded from a lightweight material such as expanded polystyrene resin is fitted to change the contact surface with the concrete from a line contact to a surface contact, so as to prevent unevenness from forming on the concrete surface during the finishing stage.

The swivel table 3 has a cylindrical shape, and the main body 1
The concrete leveling mechanism 4 and the screed 5 can be lifted and supported through the swing arms 6 and 7, and the concrete leveling mechanism 4 and the screed 5 can be swung through the swing arms 6 and 7, respectively, and a vertical axis is attached to the central part of the main body 1 so that the direction can be changed. It extends through and is supported so as to be rotatable at the center.

That is, although not shown, the lower half of the swivel base 3 is equipped with a vertical movement mechanism consisting of a jack, etc., and by being pushed downward, the main body 1 can be lifted and held. As shown in the figure, the drive mechanism for changing direction and swinging is a motor 8 fixed to the main body 1 and a gear 9 disposed around the swivel base 3, which are interlocked and connected by a gear transmission mechanism via a speed reducer. etc. are used. That is, when the vertical movement mechanism lifts and holds the main body 1 and the swivel base 3 in the landing state is on the reaction base side, the main body 1 side moves, that is, the direction change is caused by the drive of the gear transmission mechanism. In addition, when the main body 1 side of the swivel base 3 in a non-landing state serves as a reaction force base, the swivel base 3 side moves, that is, swings, by the drive of the gear transmission mechanism.

The concrete leveling mechanism 4 is located inside a support frame/cover 4a which is long in the front-back direction and is open at the bottom, and includes a one-way screw 4 in the front-back direction.
b is rotatably installed, and a diaphragm/finishing plate 4c is attached to one side of the support frame/cover 4a to be long in the front-rear direction and horizontally, and the one-way screw 4b is moved as needed by a motor 4d. It is configured to be driven and rotated only in one direction, that is, in the direction of pushing the concrete forward, via the power transmission mechanism 4e.

The concrete leveling mechanism 4 is rotatably supported 180 degrees at the center of the upper surface of the support frame/cover 4a at the lower end of the swing arm 6.
The one-way screw 4b precedes the swing direction by the swing arm 6 of the leveling mechanism 4,
The diaphragm/finishing plate 4c follows this movement, and is configured to rotate so as to push the concrete forward by the one-way screw 4b even when it is swung in either the left or right direction.

Here, the leveling mechanism 4 has a cylindrical portion 4f erected from the center of the upper surface of the support frame/cover 4a and a cylindrical portion 6a hanging down from the lower surface of the tip of the swing arm 6, which are fitted into each other. Therefore, the output shaft 10a of a cylinder 10, which is rotatable on a horizontal plane with respect to the swing arm 6 and is disposed perpendicularly around the tip of the swing arm 6, is fixed to the cylindrical portion 4f. Move the leveling mechanism 4 by 180 degrees from the position shown by the solid line in Figure 1.
It is formed so that it can be inverted on a horizontal plane.

The screed 5 is installed in order to correct running marks left on the concrete surface by the running section 2. This screed 5 has a flat plate-like vibrator 5b mounted on a vertical shaft 5a so as to be able to slide vertically and downwardly. The vibrator 5b is formed to be elastically biased downward by a compression spring 5c mounted on the vertical shaft 5a. By pivoting the upper end, it is supported by the swing arm 7 so as to be able to swing back and forth in the left and right directions on a horizontal plane.

The swing arms 6 and 7 are supported at the upper end of the swivel base 3 so as to be able to reciprocate in the left and right directions, with one swing arm 6 extending forward and the other swing arm 7 extending forward. extends rearward, and the leveling mechanism 4 and screed 5 are attached to each end as described above.

In FIG. 2, reference numeral 11 indicates a level meter mounted on a cylinder 10 for reversing the leveling mechanism 4. The level meter 11 receives a level signal from the outside (not shown), and uses the signal to expand and contract the cylinder 10 to ensure the level of the leveling mechanism 4.

In the above configuration, when leveling concrete using this device, the device is placed at the concrete placement site and the leveling mechanism 4 is operated, but at this time, the one-way screw 4b is not allowed to swing. The screw 4b is set in advance so that it is aligned with the length direction of the arm 6 and rotates in a direction that pushes the concrete forward. or,
In this leveling step, the adapters 2f are removed from the square recesses 2e, . Maintain construction standards.

While rotating the one-way screw 4b of the leveling mechanism 4, the swing arm 6 is driven by the motor 8.
When the leveling mechanism 4 is swung in a predetermined direction on a horizontal plane, excess concrete is pushed forward by the one-way screw 4b, and the concrete distributed to the pouring area is pushed forward by the one-way screw 4b. Since the finishing plate 4c which also serves as a diaphragm follows the diaphragm 4b, the concrete is leveled to the standard level.

In the illustrated example, the swing angle of the leveling mechanism 4 and screed 5 is set to 180 degrees, so
After swinging 180 degrees to level the concrete in an arc shape with a width equivalent to the length of the leveling mechanism 4, swing the leveling mechanism 4 180 degrees in the opposite direction to the above, but do not continue swinging as it is. Then, the diaphragm/finishing plate 4c precedes the screw 4b, so the leveling mechanism 4 is moved by the cylinder 10.
Flip 180 degrees and change the direction of the one-way screw 4b,
The position of the diaphragm-cum-finishing plate 4c in the swing direction is changed. Next, when the leveling mechanism 4 is swung in the opposite direction, excess concrete is pushed forward by the positional screw 4b as described above, and leveling work is performed by the diaphragm/finishing plate 4c.

Further, the apparatus of the present invention operates the running section 2 and continuously performs the concrete leveling work as described above while the apparatus is running.

Further, when changing the direction of the device, the main body 1 is lifted by pushing the swivel table 3 downward so that it comes into contact with the concrete, and in this state, the main body 1 is rotated by the motor 8.

After finishing the concrete leveling work as described above, the surface is finished, but in this case,
Crawlers 2a, 2 with square recesses in running section 2
Fit adapters 4f into each of the rectangular recesses 2e, . do.

In this finishing work, the leveling mechanism 4 is moved by the running section 2 while swinging from side to side, and the diaphragm/finishing plate 4c is lowered from the lower end of the one-way screw 4b to press down excess water and harden the surface. This process corrects surface irregularities, corrects unevenness, eliminates small holes, small waves, etc., and at the same time polishes the bare surface.

The hardness of concrete differs between the above-mentioned leveling stage and finishing stage, and as a matter of course, the concrete hardness at the finishing stage is high, and the running section 2 is designed to make surface contact with the surface of the concrete. 2 may remain on the surface, these travel marks are corrected by swinging the screed 5 back and forth in the left and right directions on a horizontal plane using the swing arm 7. Alternatively, it is also possible to work while the main body moves backwards.

Furthermore, since the screed 5 is supported by a swing arm 7 extending rearward from the main body 1, the running trace correction work is performed following the concrete surface finishing work, and therefore, the finishing work is performed. Work and track repair work can be done at the same time.

"Effects of the Invention" As explained above, since the concrete leveling device according to the present invention is constructed, the swing arm 6
By swinging the leveling mechanism 4 in the left and right directions on a horizontal plane, concrete leveling work can be mechanized, so leveling work that conventionally relied on human power can be improved and labor can be saved. By maintaining the leveling level with the main body 1 or the leveling mechanism 4, it is possible to ensure stable level accuracy, and since crawlers 2a, 2a with rectangular recesses that can run continuously are used in the running section 2, the leveling level can be maintained with the main body 1 or the leveling mechanism 4. The work efficiency can be improved by being able to carry out the finishing work and the finishing work continuously.Furthermore, in the finishing stage, the adapter 2 is attached to each groove 2e of the caterpillar with geta 2a, 2a.
By fitting f, it is possible to make surface contact with the surface of the concrete, so it is difficult to leave running marks on the finished surface, and since the running marks can be corrected with the screed 5 while running, a smooth finished surface can be obtained. Furthermore, by adopting a remote control method for controlling and operating each part, work can be improved.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of a concrete leveling device according to the present invention, FIG. 2 is a side view of the same embodiment, and FIG. 3 is a perspective view showing a concrete leveling mechanism in the same embodiment. . DESCRIPTION OF SYMBOLS 1...Main body, 2...Traveling part, 2a, 2a...Crawler with square recess, 3...Swivel table, 4...Concrete leveling mechanism, 4b...One-way screw,
4c...diaphragm and finishing plate, 5...screed,
5b...vibrator, 6,7...swing arm.

Claims (1)

[Claims] 1. A trolley body equipped with a running section consisting of crawlers with rectangular recesses on both sides that have removable adapters for making surface contact with concrete made of styrofoam resin, etc., and the body can be lifted and supported, and the direction can be changed. A swivel base supported vertically and rotatably in the center of the main body, a one-way screw, and a diaphragm/finishing plate horizontally attached from the rear to one side of the screw in the swing direction. It is equipped with a concrete leveling mechanism that is reversibly attached to a swing arm extending forward from the swivel base and swings back and forth on a horizontal surface, a vibrator, etc., and is installed rearward from the swivel base. A concrete leveling device comprising: a screed that is pivotally supported by a swing arm that swings back and forth on a horizontal surface.