JPS63206566A - Concrete levelling machine - 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] Industrial Field of Use This invention is useful in the field of concrete pouring work for construction, particularly in the field of pouring horizontal floor concrete, etc. This invention relates to a concrete leveling machine for leveling concrete.

Conventional technology For example, the concrete leveling machine described in Japanese Patent Application No. 80-276509 has a flat surface on a chassis having a caterpillar running section a, as schematically shown in FIGS. 8 and 9. A generally triangular swing arm C is supported at its apex by a spherical bearing d, the remaining two points are supported by horizontality adjustment mechanisms e and e, and is provided in such a way that it protrudes forward from a set of cantilevers. ing. A single wooden traversing rail g is provided at the tip of this swing arm C via a height adjustment mechanism f, and a leveling screw h is attached to a traversing table j that traverses along this traversing rail g.
It is said that it is configured with a .

More specifically, a large beam m is attached to the tip of the swing arm C, and a single traversing rail g is provided in front of the beam m, and the traversing table j is mounted via a slider that grips the traversing rail g. It is assumed that the beam traverses the front side of the beam m. Furthermore, the base of the leveling mechanism part n is suspended below the height adjustment mechanism f provided on the traversing table j, and the base part is supported cantilevered by the height adjustment mechanism f and the leveling mechanism part n projects forward. It has a structure in which a leveling screw h is installed below.

Problems to be Solved by the Invention (1) In the case of the concrete leveling machine having the above configuration, no matter how accurately the swing arm C is leveled with the level adjustment mechanism e, the inclination of the height adjustment mechanism f (deviation in vertical accuracy) and inclination of leveling mechanism n (deviation in horizontal level)
For this reason, it is not possible to guarantee whether the leveling level of the leveling screw h is accurate or not, and there is a problem in that the concrete leveling accuracy lacks reliability.

(If) In addition, the conventional caterpillar running section a tramples concrete that has been barely leveled by the leveling screw h and disturbs it. In other words, the soft concrete is pushed away by the caterpillar running section a to both sides, leaving groove-like ruts, which require the labor of manually backfilling and finishing the ruts, making it difficult to truly mechanize the work. There was also the problem that it was not possible.

(III) Moreover, the caterpillar traveling section a inevitably becomes a heavy structure, which poses a problem in that it becomes a hindrance to reducing the weight of the concrete leveling machine.

Means for Solving the Problems As a means for solving the problems of the above-mentioned prior art, a concrete leveling machine according to the present invention is provided, as preferred embodiments are shown in FIGS. 1 to 7 of the drawings. A support arm 7 projecting approximately horizontally in front of a vehicle chassis 1 equipped with wheels 2.3 that runs on poured fresh concrete was installed via a height adjustment mechanism 8. Then, a traverse rail 11 is provided on the support arm 7, and the traverse rail 11 is provided on the support arm 7.
1, a leveling element 13 is provided so as to be freely movable. Further, a horizontal modulation 11ff mechanism 4.5.6 is provided on the chassis l.

In addition, as a specific embodiment, wheels 2 supporting the chassis l
．． 3 is formed into a basket shape with a thin rod, and a drive motor 2 is attached to an axle 28 to connect either or both of the front wheels 2 and rear wheels 3.
2 is configured as a directly connected driving wheel.

Further, the horizontality adjustment mechanism 4.5.6 is provided at each vertex position of a substantially equilateral triangle when the vehicle chassis l is viewed in plan, and the support arm 7 is provided at the front part of the vehicle chassis l at a height. The height adjustment mechanism 8 and the guide bin 10 allow the height to be adjusted by vertically moving in parallel.

At least two traversing rails 11 are provided below the support arm 7 in parallel with an interval in the horizontal direction, and a traversing table 12 is suspended below the traversing rail 11 so as to be able to freely traverse. 12 is provided with a leveling element 13 such as a screw and its driving part 14.

In addition, the wheel 2.3 has two rings 16.16 arranged concentrically at a predetermined interval, joined in the axle direction by connecting rods 17 arranged at a constant pitch in the circumferential direction, and each Ring 16. Connect 16 and center part 18 to spoke 19.
... are connected to form a basket shape.

Function: The wheels 2.3 of this concrete leveling machine are made of thin rods and are formed into a basket shape, so that they are sufficiently lightweight, and also run without displacing concrete and do not form ruts. That is, the wheels 2.3 have their respective constituent members smoothly embedded in the poured concrete, and are less likely to trample or disturb the leveled surface. Therefore, the wheel 2
．． There is no particular need to retouch the marks where 3 passed.

Furthermore, when the horizontality of the support arm 7 is adjusted through the chassis 1 by the horizontality adjustment mechanisms 4 to 6, at least two wooden traverse rails 11 and 11 are provided below the support arm 7.
The horizontality of the traversing table 12 suspended in a point-supported manner is ensured. Therefore, the leveling level of the leveling element 13 such as a screw provided on the transverse table 12 has been properly adjusted, and the leveling accuracy of the leveling element 13 is highly guaranteed. You can do leveling work.

Example Next, the illustrated embodiment will be explained.

In the concrete leveling machine shown in Figures 1 to 3,
In the figure, reference numeral 1 denotes a chassis, which is supported in a four-wheeled manner by two front wheels 2.2 and two rear wheels 3.3.

The chassis 1 is constructed of a square pipe material or the like as a lightweight frame structure having the necessary strength and rigidity.

The wheels 2.3 are attached to the four corners of the chassis 1, which has a substantially rectangular shape when viewed from above, by vertical struts 25 (FIG. 4). The front wheels 2, 2 are configured as drive wheels, and a drive motor 22 is attached to each.

The details of the structure of the wheel 2 or 3 are as shown in Fig. 4, in which two rings 16 and 16 formed of slightly thicker round pipes are arranged concentrically at a constant interval, and are arranged parallel to the axle direction.
The rings 16, 16 and the hub 18 in the center are connected together by welding using a large number of thin connecting rods 17 arranged at equal pitches in the circumferential direction, and each ring 16, 16 and the hub 18 in the center are connected by thin rod-shaped spokes 19...・It is integrally joined and the entire structure is basket-shaped. Therefore, it is extremely lightweight.

Furthermore, the connecting rods and spokes 19 and ring 16 are each smoothly buried in the poured concrete, and do not displace the concrete.

Therefore, the tracks of these wheels 2.3 are naturally backfilled by the fluidity of the concrete, so no ruts occur, and no special artificial modification is required.

In the case of the drive wheel 2 shown in FIG.
A hollow cylindrical axle 28, which is integral with the hub 18, is rotatably supported via a pole bearing. A drive motor 22 is fixedly provided within the motor case 26 with a port 29.

The drive shaft 22a of the drive motor 22 is connected to a reducer 31 installed in the reducer case 27 on the opposite side.
The output shaft of the motor is connected to the axle 28 to transmit rotation to the axle 28.

Further, the reducer case 27 includes a rotary encoder 30.
is installed, and the rotation speed and rotation angle of the drive shaft 22a are automatically measured by an encoder 30. Note that a motor with an electromagnetic brake is used as the drive motor 22.

Therefore, when the two front wheels (drive wheels) 2.2 are controlled synchronously with each drive motor 22, the concrete leveling machine moves straight.

At this time, the rotary encoder 30 measures the rotational speed and rotation angle of the wheels 2 to determine the travel distance, thereby making it possible to set the travel distance during automatic driving.

A support 25 provided vertically at the center of the upper surface of the wheel yoke 21 is supported by the chassis 1 (FIGS. 6A and 6B). In particular, the strut 25 of the front wheel 2.2 is configured to also serve as a leveling adjustment mechanism 5.6. Further, when the chassis 1 is viewed in plan as shown in FIG. 1, one horizontality adjustment mechanism 4 is installed at one remaining apex position of a substantially equilateral triangle together with the front wheels 2.2,
A total of three (but not limited to) horizontality adjustment mechanisms 4, 5, 6 are installed.

The details of the structure of the front horizontality adjustment mechanisms 5 and 6 are as shown in FIG. 6B. As shown in FIG. is assembled, and a pole screw type feed screw shaft 42 is connected downward to its output shaft. On the other hand, the inner surface of the main frame 40 is used as a guide cylinder, and a linear shaft 45 having a slider 44 that is slidable in the axial direction on the inner circumferential surface thereof is provided concentrically within the guide cylinder. Integrate with this direct-acting shaft 45! The feed screw shaft 42 is screwed into the rounded parent nut 46 via a pawl.

Therefore, when the servo motor 41 is rotated by a predetermined number of rotations or rotation angle in the forward or reverse direction through the servo driver, the linear motion shaft 45 is rotated at a predetermined speed due to the screw movement between the feed screw @42 and the parent nut 46. Stretched downwards or contracted upwards by a distance. Therefore, the chassis 1 is adjusted up and down using the grounding point of the wheels 2 as a fulcrum.

In addition, the structural details of the horizontal modulation M'i mechanism 4 at the rear of the chassis are as follows.
As shown in FIG. 7, a reduction gear and a servo motor 51 are attached to the upper side of the main frame 50, and a pole screw type feed screw shaft 52 is connected downward to the output shaft thereof. On the other hand, a guide cylinder 53 is attached to the lower side of the main frame 50, and within this guide cylinder 53, a linear motion shaft 54 of a hollow structure that can freely slide in the axial direction on its inner circumferential surface is provided in a concentric arrangement. There is.

The feed screw shaft 52 is screwed into a parent nut 55 which is integrally formed with the linear motion shaft 54 through a pole.
A ground plate 56 is horizontally attached to the lower end of the direct-acting M54.

Therefore, when the servo motor 51 is rotated by a predetermined number of rotations or rotation angle in the forward or reverse direction through the servo driver, the linear motion shaft 54 is moved a predetermined distance due to the screw movement between the feed screw shaft 52 and the parent nut 55. extended downward or contracted upward. Therefore, the chassis l is adjusted up and down using the grounding point of the ground plate 56 as a fulcrum.

In this way, the servo motors 41.51 of the three leveling adjustment mechanisms 4.5.6 adjust to the measured values of the tilt gauges, etc. (not shown) in the 3-axis directions installed on the chassis l (or support arm 7). If the horizontality of the chassis 1 and the support arm 7 is automatically controlled based on the above, the horizontality of the chassis 1 and the support arm 7 can be automatically, accurately and quickly obtained.

Note that since the rear wheel 3 does not require a drive motor or a rotary encoder, the vertical support 25 of the yoke 21 is simply supported by the chassis 1, although detailed illustration is omitted.

Next, the two wooden support arms 7 . .10 (FIG. 6B), and is horizontally projected toward the front of the chassis 1.

Further, a height adjustment mechanism 8 is installed at the center of the front part of the chassis 1, and the height of the support arm 7 can be adjusted via a connecting beam 7b that connects the slide bearings 7a, 7a of the support arm 7 from side to side. configured to be possible. This height adjustment mechanism 8 is
The height position of the support arm 7 is adjusted by a servo motor which is also driven by a servo driver.

The support arm 7 thus has a horizontal adjustment mechanism 4.5.6.
Since the height position is determined by the height adjustment mechanism 8 after the horizontality level is properly determined, the adjustment accuracy is extremely high.

The height position of the support arm 7 is adjusted by receiving a reference level laser beam at the target and automatically measuring the height level error (not shown). Then, input the measured value to the servo driver to automatically operate the servo motor.
This is usually done in the following manner.

As shown in detail in FIG. 5, on the lower surface of the support arm 7, in a direction perpendicular to the longitudinal direction of the chassis 1, two wooden traverse rails 11.11 are integrally constructed with the reinforcing beam lla. , are provided in parallel at appropriate intervals in the horizontal direction.

The transverse rail 11 has a substantially drum-shaped cross section. On the other hand, the traverse platform 12 is suspended so as to be able to freely traverse along the rail 11, 11 via slides 12a, 12a which have grooves that have substantially the same shape as the cross-sectional shape of the traverse rail 11 and bite into it. ing.

The traverse platform 12 is arranged horizontally directly in front of the vehicle platform l,
Below that, a leveling screw 13, which is a leveling element and whose both ends are supported by bearings 60, 60, is installed horizontally and rotatably.

The leveling screw 13 is connected to a drive motor 14 installed on the traversing table 12 by a chain 61.

The drive motor 14 is a geared motor with a speed reducer, and the leveling screw 13 is driven at a rotation speed that is matched to the concrete properties. For example, in order to improve the finish of concrete surface leveling work, the rotation rate of the leveling screw 13 is increased.

Next, a drive motor 62 (FIG. 3) for moving the traverse table 12 along the traverse rail 11 is mounted on the traverse table 12. Pinion 6 rotationally driven by motor 62
2a is a traverse rail 11 on the front side of the reinforcing beam 11a.
It is engaged with a rack 63 attached parallel to the
figure).

The drive motor 62 is a geared motor with an electromagnetic brake and a speed reducer, and the traversing table 12 and leveling screw 13 are translated in the lateral direction at an appropriate speed.

The leveling screw 13 is traversed to the limit of the length of the traverse rail 11 (see FIG. 1). The limit position of the movement stroke of the traversing table 12 is detected by a limit switch, and the stop and reverse operation of the drive motor 62 are automatically controlled. By moving the leveling screw 13, the surface of the poured concrete is efficiently leveled over a wide area.

The concrete leveling machine with the above configuration is equipped with an automatic opening W board 64 at the position shown by the dotted line in FIG. 2, and is configured to be able to perform either automatic operation or manual operation by switching the mode. .

Regardless of the mode of operation, concrete leveling work on site is usually done by leveling the chassis 1 with the leveling screw 13.
This is done by repeating the procedure of moving the leveling screw 13 straight by a distance equivalent to the length of , stopping once at that position, and then moving it back and forth once while rotating the leveling screw 13.

Preferably, the height of the leveling screw 13 is automatically set to the position of the reference level laser beam, and the leveling level is automatically controlled based on the measured value of an inclinometer or the like.

In addition, depending on the leveling finish, the running of the chassis 1 and
A construction method in which the leveling screw 13 is moved continuously can also be adopted.

As described in detail in conjunction with the embodiments, the concrete leveling machine according to the present invention can perform surface leveling work and leveling of poured floor concrete etc. to a high level. It can be mechanized and automated construction is possible. Therefore,
It is possible to save labor, labor, and skills in earthwork and plastering.

Moreover, this concrete leveling machine can be sufficiently lightweight to the extent that no special reinforcement such as floor formwork is required, so that it can be applied universally.

Furthermore, since the leveling screw 13 has a highly accurate height adjustment section and leveling adjustment, highly accurate leveling work and leveling of the concrete surface can be carried out efficiently and at low cost.

[Brief explanation of the drawing]

1 to 3 are a plan view, a front view, and a side view of a concrete leveling machine according to the present invention, FIG. 4 is a detailed structural view of a drive wheel, and FIG. Figures 6A and B are side views and cross-sectional views showing details of the front wheel part, Figure 7 is a cross-sectional view showing the leveling adjustment mechanism at the rear of the chassis, and Figure 8 and FIG. 9 are a plan view and a front view showing a conventional concrete leveling machine. Fig. 4 Fig. 5 Fig. 13 Multi-sushi soup 2 λ-

Claims (1)

[Scope of Claims] [1] Wheels running on poured fresh concrete (2)
) (3), a support arm (7) projecting approximately horizontally forward thereof is installed via a height adjustment mechanism (8), and a traversing rail is attached to the support arm (7). (11), a leveling element (13) is provided on the traversing rail (11) so as to be able to traverse freely, and a leveling adjustment mechanism (4) is provided on the chassis (1).
(5) A concrete leveling machine characterized by being provided with (6). [2] The wheels (2) and (3) that support the chassis (1) described in claim 1 are made of thin rods and are formed into a basket shape, and are either the front wheel (2) or the rear wheel (3). A concrete leveling machine characterized in that one or both of the above are configured as drive wheels with a drive motor (22) directly connected to an axle (28). [3] The horizontality adjustment mechanisms (4), (5), and (6) described in claim 1 are provided at each vertex position of a substantially equilateral triangle when the chassis (1) is viewed from above. The support arm (7) is installed in the front part of the vehicle chassis (1) so that the height can be adjusted by moving vertically in parallel using a height adjustment mechanism (8) and a guide pin (10). A concrete leveling machine that is characterized by: [4] Traverse rail (
11) are provided below the support arm (7) in parallel with at least two horizontally spaced apart rails (11).
1) A transverse platform (12) that projects horizontally toward the front of the vehicle is suspended so as to be freely traverseable, and a leveling element (13) such as a screw and its driving portion (14) are provided on the transverse platform (12). A concrete leveling machine that is characterized by: [5] The wheels (2) and (3) described in claim 1 or 2 have two rings (16) and (16) arranged concentrically at a predetermined interval in a circumferential direction. are connected in the axle direction with connecting rods (17) placed at a constant pitch, and each ring (16) (16) and the hub (18) in the center are connected with spokes (19). A concrete leveling machine characterized by being formed into a basket shape.