Concrete finisher

Abstract

To provide a concrete finisher that can spread and level a spreading and levelling material such as concrete more efficiently than before.SOLUTION: The concrete finisher at least includes: a machine body 1; a traveling device 2 which can make the machine body 1 travel; a screed 6 which is provided at a lower part of the machine body 1 and can spread and level a spreading and levelling material 8; and a press-levelling member 4 which is provided at a front part of the machine body 1 and can press and level the spreading and levelling material 8 received at the front of the machine body 1. The press-levelling member 4 has a protruding part 43 which forms an acute angle part 431 in front of the machine body 1 at a lower part of the press-levelling member 4 and protrudes.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a concrete finisher capable of leveling a leveling material such as concrete.

Background Art

[0002] Conventionally, as being applicable to road construction in progress, Patent Document 1 discloses an invention of a small concrete finisher equipped with a crawler-type traveling device.

[0003] <​​​​​​​​​​​​​​​​​​​​​​​​​​​Therefore, in view of the above-mentioned problems, the present invention aims to provide a concrete finisher that can spread and level materials such as concrete more efficiently than conventional methods. [Means for solving the problem]

[0007] The invention relating to (1) is a concrete finisher comprising at least a machine body, a running device capable of moving the machine body, a screed provided at the lower part of the machine body and capable of spreading a leveling material, and a leveling member provided at the front of the machine body and capable of pressing and leveling the leveling material received in front of the machine body, wherein the leveling member has a protruding portion at the lower part of the leveling member that protrudes toward the front of the machine body with an acute angle.

[0008] The invention relating to (2) is a concrete finisher according to (1) above, wherein the protruding portion comprises at least a downward sloping surface that slopes downward from the acute angle portion to the leveling surface of the spreading material, and an upward sloping surface that slopes diagonally backward from the acute angle portion.

[0009] The invention relating to (3) is a concrete finisher as described in (2) above, wherein the leveling member has a pressing portion that is connected from the end of the downward sloping surface of the protruding portion to the leveling surface of the screed.

[0010] The invention relating to (4) is the concrete finisher described in (3) above, wherein the pressing part is equipped with a vibrator.

[0011] The invention relating to (5) is a concrete finisher as described in (4) above, wherein the leveling member has a vertical surface extending substantially vertically from the upper end of the upward inclined surface of the protruding portion, and a knocker is provided on the back surface of the vertical surface.

[0012] The invention relating to (6) is a concrete finisher as described in (1) above, wherein the leveling member is coated with a fluororesin or covered with a fluororesin processed product on at least a part of the contact surface with the leveling material.

[0013] The invention relating to (7) is a concrete finisher according to any one of (1) to (6) above, wherein the leveling material is a fiber-reinforced cement-based composite material.

[0014] The invention relating to (8) is a concrete finisher according to any one of (1) to (6) above, wherein the leveling material is UHPFRC having early strength development performance. [Effects of the Invention]

[0015] According to the present invention, a leveling member is provided at the front of the machine body, capable of leveling the leveling material received in front of the machine body. By providing a protruding portion at the lower part of the leveling member that forms an acute angle and protrudes toward the front of the machine body, the leveling material unloaded in front of the concrete finisher can be cut and separated, thereby reducing construction time and material loss, and improving quality. [Brief explanation of the drawing]

[0016] [Figure 1] This is a front-side perspective view of a concrete finisher in an embodiment of the present invention. [Figure 2] This is a front view of a concrete finisher in an embodiment of the present invention. [Figure 3] This is a side view of a concrete finisher in an embodiment of the present invention. [Figure 4] This is a front side perspective view of the leveling member in an embodiment of the present invention. [Figure 5] This is a side view of a leveling member in an embodiment of the present invention. [Figure 6]A side view of a pressing member showing the arrangement of a vibrator and a knocker in an embodiment of the present invention. [Figure 7] A side view showing the pressing mode of the pressing member in an embodiment of the present invention. [Figure 8] A plan view of a pressing member showing the arrangement of a vibrator and a knocker in an embodiment of the present invention. [Figure 9] (a) is a side view of a concrete finisher disclosed in Patent Document 1, and (b) is a plan view.

Mode for Carrying Out the Invention

[0017] Hereinafter, an embodiment of the concrete finisher of the present invention will be described with reference to the drawings.

[0018] As shown in the front perspective view of FIG. 1, the concrete finisher 100 of this embodiment includes at least a machine body 1, a traveling device 2 capable of traveling the machine body 1, a screed 6 provided below the machine body 1 and capable of leveling the leveling material 8, and a pressing member 4 provided at the front of the machine body 1 and capable of pressing the leveling material 8 received in front of the machine body 1.

[0019] More specifically, crawler-type traveling devices 2 each provided with a traveling electric motor with a transmission (not shown) are provided on both sides of the machine body 1 of the concrete finisher 100 of this embodiment. The traveling device 2 is connected to the machine body 1 via a lifting device 3. The lifting device 3 includes a lifting actuator 31, and by operating this, it is possible to adjust the height of the machine body 1 vertically with respect to the traveling surface.

[0020] Furthermore, a screed 6 capable of spreading the leveling material 8 is provided at the bottom of the machine body 1, and two generators 54 with a power generation capacity of 2.8 kVA each, as well as two vibrator distribution boards 52 and two vibrator inverters 53 are installed at the top of the machine body 1. The generators 54 serve as the power source for the traction device 2 and the vibrators.

[0021] The control panel 51, installed on top of the machine body 1, has built-in devices necessary for operating and controlling the concrete finisher 100. For example, it can be configured to manually or automatically control the height of the machine body 1 according to the spreading thickness, control the movement of the traveling device 2, and control the operation of the vibrator and other devices.

[0022] A rectangular work platform 57 is provided at the rear of the machine body 1, allowing workers and operators to stand on it and perform necessary operations and tasks during construction.

[0023] Furthermore, the front of the machine body 1 is provided with a leveling member 4 capable of leveling the leveling material 8 received in front of the machine body 1, and on both sides of the leveling member 4 are side covers 61 to prevent the leveling material 8 from leaking out of the work area (leveling area).

[0024] More specifically, as shown in the front view of Figure 2 and the side view of Figure 3, the leveling member 4 is connected and fixed to the front of the machine body 1 by four turnbuckle connecting members 72 and three actuator-equipped connecting members 71.

[0025] As shown in the plan view of the leveling member 4 in Figure 8, the pressing portion 44 of the leveling member 4 has three actuator mounting portions 711 for the actuator-equipped connecting member 71. In addition, the back surface of the curved surface 41 of the leveling member 4 has four turnbuckle mounting portions 721 for the turnbuckle connecting member 72.

[0026] Next, the leveling member 4 in this embodiment will be described. Figure 4 shows a front perspective view of the leveling member 4 in this embodiment, Figure 5 shows a side view, and Figure 8 shows a top view.

[0027] As shown in the figure, the leveling member 4 of this embodiment has a protruding portion 43 at the lower part of the leveling member 4 that protrudes forward of the machine body 1 with an acute angle portion 431. As shown in Figure 5 and other figures, the protruding portion 43 has a downward sloping surface 432 that slopes downward from the acute angle portion 431 toward the leveling surface of the leveling material 8, and an upward sloping surface 433 that slopes diagonally backward from the acute angle portion 431.

[0028] More specifically, the downward-sloping surface 432 in this embodiment is formed with a width of 50 mm and a downward slope of 11°. On the other hand, the upward-sloping surface 433 is formed with a curved surface of R200 mm. In addition, the tip of the acute-angled portion 431 is curved with a radius of R20 mm. In particular, by forming the downward-sloping surface 432, it becomes possible to more easily absorb the leveling material 8 that accumulates in front of the leveling member 4.

[0029] In addition, a retaining portion 44 is provided from the rear end of the downward-sloping surface 432 to the leveling surface of the screed 5, as shown in the figure. Furthermore, a vertical surface 42 is formed extending substantially vertically from the upper end of the upward-sloping surface 433, and a curved surface 41 that curves forward with a radius of R150 mm is formed from the upper end of the vertical surface 42. The dimensions of each of the above-mentioned parts are as shown in the figure.

[0030] Between the back surface of the vertical plane 42 and the back surface of the pressing portion 44, reinforcing ribs 45 are provided at predetermined intervals to stably maintain the shape of the leveling member 4. In addition, mounting plates 46 are provided at both the left and right ends of the leveling member 4 for attaching side covers 61 to prevent the leveling material 8 from leaking out of the work area (leveling area).

[0031] As shown in the side view of Figure 6, a knocker 48 is provided on the back of the vertical surface 42 of this embodiment, and a vibrator 47 is provided on the pressing portion 44. More specifically, as shown in the plan view of the leveling member 4 of Figure 8, in this embodiment, four vibrator mounting portions 471 are arranged on the pressing portion 44, allowing the vibrators 47 to be installed at predetermined intervals in the width direction of the leveling member 4. Similarly, four knocker mounting portions 481 are arranged on the back of the vertical surface 42, allowing the knockers 48 to be installed at predetermined intervals in the width direction of the leveling member 4.

[0032] Next, the construction method of the concrete finisher 100 in this embodiment will be described. Figure 7 is a schematic diagram showing the process of pressing and leveling the spreading material 8 by the leveling member 4.

[0033] As shown in the figure, the leveling material 8 unloaded onto the leveling surface in front of the concrete finisher 100 is leveled by the leveling member 4 as the concrete finisher 100 moves forward. At this time, the leveling material 8 can be efficiently leveled by cutting it with the sharp angle 431 of the protrusion 43 formed at the bottom of the leveling member 4.

[0034] Furthermore, the downward-sloping surface 432 of the protruding portion 43 allows the leveling material 8 to be fed up to the leveling level, and the screed 5 is configured to perform leveling sequentially.

[0035] On the other hand, the leveling material 8, which is separated by the acute angle 431 of the protruding portion 43 and sent from the upward inclined surface 433 to the vertical surface 42, is sent forward by the impact vibration of the knocker 48 provided on the back of the vertical surface 42. This makes it possible to significantly suppress the accumulation of leveling material 8 in front of the leveling member 4.

[0036] In particular, when spreading a leveling material 8 that has a rapid strength development rate and a very short working time, material that remains in front of the leveling member 4 for a long time cannot be used. Therefore, conventionally, such excess material had to be removed manually. However, with the characteristic configuration of the leveling member 4 of this embodiment described above, it is possible to efficiently perform everything from leveling to spreading even with a leveling material 8 that has a rapid strength development rate and a very short working time. This makes it possible to reduce construction time and material loss, as well as improve quality.

[0037] The concrete finisher 100 of this embodiment can handle the spreading of various materials as a spreading material 8, but is particularly useful for spreading fiber-reinforced cement-based composite materials, so-called FRCC. Furthermore, the characteristic configuration of the pressing member 4 of this embodiment exhibits remarkable effects when spreading so-called UHPFRC, which includes ultra-high performance fiber-reinforced cement-based composite materials with a rapid strength development rate and short pot life.

[0038] (Other embodiments) The concrete finisher 100 of this embodiment has been described above, but it is not necessarily limited to the embodiment described above, and various modifications as shown below are possible.

[0039] For example, the leveling member 4 can be coated with a fluororesin or covered with a fluororesin-processed product on at least a portion of the contact surface with the leveling material 8. By treating the surface of the leveling member 4 in this way, it becomes possible to more effectively suppress the accumulation of the leveling material 8 in front of the leveling member 4.

[0040] The dimensions of the leveling members 4 can be changed as appropriate within the range that achieves the effects described above. In addition, the number and spacing of the vibrators 47 and knockers 48 can also be changed as appropriate according to the physical properties of the leveling material 8.

[0041] In the embodiment described above, the leveling member 4 was connected and fixed to the front of the machine body 1 by a turnbuckle connecting member 72 and an actuator-equipped connecting member 71. However, the configuration may allow for length adjustment of these members and adjustment of the inclination angle of the leveling member 4.

[0042] In the embodiment described above, the protruding portion 43 of the leveling member 4 was formed with a downward sloping surface 432 that slopes downward from the acute angle portion 431 toward the leveling surface of the leveling material 8, and an upward sloping surface 433 that slopes diagonally backward from the acute angle portion 431. However, the configuration is not necessarily limited to this, and it is possible to eliminate the downward sloping surface 432 and make it a horizontally flat configuration similar to the pressing portion 44.

[0043] In the embodiment described above, an upward-sloping surface 433, a vertical surface 42, and a curved surface 41 were formed on the front side of the leveling member 4, but the shape is not necessarily limited to this. For example, the vertical surface 42 can be made into a curved surface, and the upward-sloping surface 433 can be made into a straight shape. Of course, it is also possible to make the entire front side of the leveling member 4 into a curved surface. In particular, when leveling a fluid leveling material 8, it is preferable that the front side of the leveling member 4 (upward-sloping surface 433, etc.) be a curved surface, as this makes it possible to level the leveling material 8 more smoothly and quickly.

[0044] The concrete finisher 100 in the above-described embodiment is equipped with a crawler-type running device 2, but it may also be configured to run on rails laid at the construction site.

[0045] Although embodiments and other modifications of the present invention have been described above, the scope of the present invention is indicated by the claims rather than the above-described embodiments, and all modifications within the meaning and scope of equivalence to the claims are included. Furthermore, the specific materials, dimensions, shapes, etc., described in the above embodiments can be modified to the extent that they solve the problems of the present invention. [Explanation of symbols]

[0046] 1 unit 2. Traveling device 3. Lifting device 4. Leveling member 6 Screede 8. Spreading materials 31 Lifting Actuator 41 Curved surface 42 Vertical plane 43 Protrusion 44 Pressing part 45 Reinforcement ribs 46 Mounting plate 47 Vibrator 48 Knocker 51 Control panel 52 Distribution board for vibrators 53 Inverter for Vibrator 54 Generators 57 Workbench 61 Side cover 71. Connecting member with actuator 72 Turnbuckle connecting member 1. Earthen wall 10 Existing walls 100 Concrete Finisher 431 Acute angle 432 Descending slope 433 Upward slope 471 Vibrator mounting section 481 Knocker mounting section 711 Actuator mounting section 721 Turnbuckle mounting section

Claims

1. The aircraft and, A traveling device capable of moving the aforementioned aircraft, A screed is provided at the lower part of the aforementioned aircraft and capable of spreading leveling material, The system comprises at least a leveling member provided in front of the screed and capable of leveling the leveling material received in front of the machine, The flattening member has a protruding portion at its lower part that forms an acute angle and protrudes forward of the machine body. A concrete finisher characterized by [feature].

2. The aforementioned protrusion is A downward sloping surface that slopes downward from the aforementioned acute angle to the leveling surface of the spreading material, It comprises at least an upward sloping surface that slopes diagonally backward from the aforementioned acute angle. The concrete finisher according to claim 1.

3. The leveling member has a pressing portion that connects from the end of the downward-sloping surface of the protruding portion to the leveling surface of the screed. The concrete finisher according to claim 2.

4. The aforementioned pressing part is equipped with a vibrator. The concrete finisher according to claim 3.

5. The leveling member has a vertical surface that extends substantially vertically from the upper end of the upward inclined surface of the protruding portion, A knocker is provided on the back of the aforementioned vertical surface. The concrete finisher according to claim 4.

6. The leveling member is coated with a fluororesin or covered with a fluororesin-processed product on at least a portion of the contact surface with the leveling material. The concrete finisher according to claim 1.

7. The aforementioned leveling material is a fiber-reinforced cement-based composite material. A concrete finisher according to any one of claims 1 to 6.

8. The aforementioned leveling material is UHPFRC, which has early strength development properties. A concrete finisher according to any one of claims 1 to 6.

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