Concrete leveling equipment

Abstract

To provide a concrete leveling device capable of efficiently traveling a concrete installation site and capable of efficiently leveling installed concrete.SOLUTION: A concrete leveling device comprises: a support base; a moving device provided on the support base; a base member provided on the support base so as to revolve; an arm support portion provided in the base member so as to vertically oscillate; an expansible arm member attached to the arm support portion; and a concrete leveling tool provided in the arm member so as to vertically oscillate. The support base comprises: one support base and the other support base that are integrally connected to each other via a connection portion. The connection portion is connected so that one support base and the other support base can rotate in a substantial horizontal and twisting direction. The moving device has four grounding tools, and the grounding tools are attached one each on left and right side faces of one support base and one each on left and right side faces of the other support base.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a concrete leveling device for leveling the surface of poured concrete, mortar, etc., to a substantially horizontal surface. [Background technology]

[0002] Conventionally, a known concrete leveling device for leveling the surface of concrete on a slope to a substantially horizontal level is "a concrete leveling device in which a horizontally extended telescopic boom is supported on a cart having wheels that runs on a work site, and a rake is attached to the end of the telescopic boom via a rod that extends downward, characterized in that the concrete leveling device comprises a swivel mechanism that rotates the telescopic boom forward and backward when viewed from above the cart, a tilting mechanism that tilts the telescopic boom in a desired direction relative to the cart, and a lifting mechanism that raises and lowers the telescopic boom relative to the cart, separate from the tilting of the telescopic boom by the tilting mechanism."

[0003] However, the places where the concrete leveling device with the above-mentioned configuration is to run are considered to be on top of steel frames, on the building structure, on the ground, etc., but these places are not necessarily flat and may be undulating. In such places with undulations, the wheels may spin freely, making it impossible to run properly. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6506491 Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above-mentioned conventional drawbacks, the present invention has an object to provide a concrete leveling device that can efficiently travel around a concrete laying site and efficiently level the laid concrete. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the concrete leveling device described in claim 1 of the present invention is composed of a support base that is normally in an approximately horizontal position, a moving device attached to the support base, a base member that is rotatably attached to the support base, an arm support section that is slidably attached to the base member in the vertical direction, an extendable arm member attached to the arm support section, and a concrete leveling tool that is slidably attached to the arm member in the vertical direction, wherein the support base is composed of one support base and the other support base that is integrally connected to the one support base via a connection section, wherein the connection section connects the one support base and the other support base so that they can rotate approximately horizontally and in a torsional direction, and the moving device has at least four grounding devices, and the grounding devices are attached one on each side of the one support base and the other support base.

[0007] The concrete leveling device according to claim 2 is characterized in that a hydraulic cylinder is further provided to connect the one support base and the other support base.

[0008] The concrete leveling device according to claim 3 further comprises a spanner capable of adjusting the left-right spacing of the grounding devices. Effect of the Invention

[0009] As is clear from the above description, the present invention provides the following effects. (1) In each of the inventions described in claims 1 and 2, one support base and the other support base are connected to be rotatable in horizontal and torsional directions, and two wheels are attached to each of the one support base and the other support base, so that the one support base and the other support base can be appropriately displaced around the connection part as a fulcrum in accordance with the ground, body, or frame-shaped material on which the vehicle is running, allowing the wheels to touch the ground. Therefore, it can travel efficiently around the site and level the concrete. (2) In the invention described in claim 3, the same effect as (1) can be obtained, and the distance between the left and right grounding devices can be adjusted by the spanner when moving over steel frames, etc., allowing for smoother movement. [Brief description of the drawings]

[0010] 1 to 6 are explanatory diagrams showing a first embodiment of the present invention. 7 to 9 are explanatory diagrams showing a second embodiment of the present invention. [Figure 1] FIG. 2 is a side view of the concrete leveling device of the first embodiment. [Diagram 2] FIG. 1 is a plan view of a concrete leveling device according to a first embodiment. [Diagram 3] FIG. 11 is an explanatory diagram showing the movement of the support base in a plan view. [Figure 4] FIG. 11 is an explanatory diagram showing the movement of the support base as viewed from the front. [Diagram 5] A reference diagram showing the movement of the base member, arm support part, arm member and concrete leveling tool. [Figure 6] Side view during operation. [Figure 7] FIG. 4 is a side view of the concrete leveling device of the second embodiment. [Figure 8] FIG. 5 is a plan view of a concrete leveling device according to a second embodiment. [Figure 9] FIG. 13 is an explanatory diagram of the state in which the spanner is extended. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The present invention will be described in detail below with reference to the embodiments for carrying out the invention shown in the drawings. With reference to Fig. 1 as a reference, the right side of the drawing where reference number 7 is located is the "front (front side)" whereas the left side of the drawing where reference number 10 is located is the "rear (back side)". Furthermore, the up-down direction refers to the up-down direction in Fig. 1. Furthermore, the left-right direction refers to the left-right direction in Fig. 2 (plan view). In the first form for carrying out the present invention shown in Figures 1 to 5, 1 is a concrete leveling device that is mainly used to level the surface of concrete laid on the ground, building foundations, steel frames, frameworks, etc.

[0012] Specifically, as shown in Fig. 1, the concrete leveling device 1 is composed of a support platform 2 which is in a substantially horizontal position in the normal state (the state in Fig. 1), a pair of moving devices 3 provided on the front and rear of the support platform 2, a base member 4 provided above the support platform 2 and rotatable horizontally relative to the support platform 2, an arm support section 5 provided on the base member 4 and capable of sliding up and down, an arm member 6 attached to the arm support section 5 and extendable in the front and rear directions, and a concrete leveling tool 7 provided on one end of the arm member 6 and capable of sliding up and down. Note that in this embodiment, a running device 3 having an axle, bearings, wheels 3a, etc. is used as the moving device 3, and the device is configured to be self-propelled.

[0013] The support base 2 is composed of one support base 8 on the front side and the other support base 10 on the rear side which is integrally connected to the one support base 8 via a connecting part 9 as a connecting member. The one support base 8 and the other support base 10 are preferably connected rotationally symmetrically in the horizontal direction with the center of the connecting part 9 as a reference.

[0014] In the embodiment, when viewed in a plane, each is formed in an approximately pentagonal shape like a baseball home base, and each vertex portion protruding in a mountain shape toward connection portion 9 is arranged opposite each other, and connection portion 9 is provided at each vertex portion.

[0015] The connection portion 9 connects the one support base 8 and the other support base 10 so that they can rotate horizontally and in a torsional direction relative to each other, and a universal joint or a connecting member equivalent to a universal joint is used.

[0016] The phrase "one support base 8 and the other support base 10 rotate in a substantially horizontal direction" refers to the one support base 8 and the other support base 10 rotating in a substantially horizontal direction with the connection part 9 as a fulcrum in the normal state (the state of FIG. 1) as shown in FIG. 3. In this embodiment, a pair of hydraulic cylinders 11 is further provided to connect the one support base and the other support base in order to rotate the one support base 8 and the other support base 10 in a substantially horizontal direction with the connection part 9 as a fulcrum.

[0017] In addition, when one support base 8 and the other support base 10 rotate in a torsional direction, this means that in the normal state, the left and right sides of one support base 8 and the other support base 10 rotate in different up and down directions with the connection part 9 as a fulcrum, as shown in Figure 4.

[0018] The support base 2 is provided with a traveling device as the moving device 3, which in this embodiment is configured with four wheels 3a as ground contact devices 3a capable of traveling on steel frames, the ground, the framework, etc. installed at the site where concrete is laid, a drive device (not shown) that drives the wheels 3a, and an engine (not shown). If the concrete leveling device 1 moves by towing or the like and is not self-propelled, the moving device 3 may be configured with only the wheels 3a without providing a drive device. In this embodiment, the engine, hydraulic pump, and motor as the drive device are also provided on one support base 8, but these may be provided on the other support base 10.

[0019] The wheel 3a in this embodiment is formed in a tire shape, but may be formed to have a groove having a substantially U-shaped cross section on its outer periphery so that it can run on a steel frame while engaging with the steel frame.

[0020] The wheels 3a of the moving device 3 are attached at least near the left and right ends of the one support base 8 and near the left and right ends of the other support base 10. That is, one grounding device 3a is attached to each of the left and right sides of the one support base 8 and one grounding device 3a is attached to each of the left and right sides of the other support base 10. By providing two wheels 3a on one support base 8 and two wheels 3a on the other support base 10 in this way and providing the connection part 9, even if there are uneven parts such as front and back or left and right different heights on the ground or reinforcing bars, the wheels 3a can be grounded reliably and the moving device can run efficiently. The wheels 3a themselves may be attached to the support base 2 so as to be swingable. By attaching the wheels 3a in this way, when the wheels 3a are engaged with the steel frame and run, the moving device can run more smoothly. In this embodiment, four grounding devices 3a are provided, but for example, six grounding devices 3a may be used to make a six-wheel moving device 3, or eight grounding devices 3a may be used to make an eight-wheel moving device 3.

[0021] Furthermore, when it is desired to make the concrete leveling device 1 turn to the left or right while traveling, the direction of travel can be changed by operating a pair of hydraulic cylinders 11. For example, when it is desired to turn to the right, the right hydraulic cylinder 11 connecting one support base 8 and the other support base 10 is contracted and the left hydraulic cylinder 11 is extended, thereby making it possible to make the concrete leveling device 1 turn to the right while traveling.

[0022] In this embodiment, a pair of hydraulic cylinders 11 are provided, but only one hydraulic cylinder 11 may be provided and one support base 8 and the other support base 10 may be rotated in a substantially horizontal direction by extending and retracting this one hydraulic cylinder 11. Also, for example, when the wheels 3a are engaged with a steel frame to travel on the steel frame, the one support base 8 and the other support base 10 rotate in a substantially horizontal direction with the connection part 9 as a fulcrum to match the curve of the steel frame, so that the hydraulic cylinder 11 may not be provided.

[0023] In this embodiment, the lower part of the base member 4 is provided on one support stand 8 on the front side via a turning mechanism 4a so as to be rotatable in an approximately horizontal direction, and an arm support part 5 is provided on the base member 4 so as to be slidable in the vertical direction. The arm support part 5 is slidably moved in the vertical direction by a lifting means such as a cylinder (not shown).

[0024] An arm member extending in a substantially horizontal direction is attached near the upper end of the arm support section 5. This arm member 6 is composed of a support arm 12 attached near the upper end of the arm support section 5, and an extendable arm 13 attached so as to be extendable and contractible to this support arm 12. As in this embodiment, the support arm 12 may be fixedly attached to the arm support section 5, but it may also be attached so as to be rotatable in the vertical direction relative to the arm support section 5.

[0025] In this embodiment, the support arm 12 is formed in a square pipe shape, and its overall length is formed to be approximately the same as the overall length of the support base 2. An expandable arm 13 is inserted inside this support arm 12.

[0026] A concrete leveling tool 7 that is slidable in the vertical direction is provided so as to hang down near the tip of this extendable arm 13 (near the tip of the arm member 6). This concrete leveling tool 7 is composed of a rake support 14 attached so as to be suspended near the tip of the extendable arm 13, and a rake 15 mounted on this rake support 14 so as to be able to slide vertically.

[0027] When using the concrete leveling device 1 of the present invention to work on site, the moving device 3 is used to approach the area where concrete has been poured. At this time, one support base 8 and the other support base 10 can be appropriately twisted around the connection part 9 as a fulcrum to match the difference in height of the surface of the structure, ground, steel frame, etc. that the device is traveling over, allowing the device to travel smoothly.

[0028] Once the working position is reached, the base member 4 is rotated in an approximately horizontal direction, the arm support part is slid vertically, and the telescopic arm 13 of the arm member 6 is extended or retracted to position the concrete leveler 7 above the concrete, etc. Thereafter, the rake 15 of the concrete leveler 7 is displaced downward, and the telescopic arm 13 is extended or retracted with the bottom surface of the rake 15 in contact with the surface of the concrete, thereby making the surface of the concrete flat.

[0029] When the bottom surface of the rake 15 is brought into contact with the surface of the concrete, the support arm 12 may be rotated vertically.

[0030] [Different modes for carrying out the invention] Next, a description will be given of a different embodiment of the present invention shown in Figures 7 to 9. In describing this different embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and duplicated descriptions will be omitted.

[0031] The second form for carrying out the present invention shown in Figures 7 to 9 mainly differs from the first form for carrying out the present invention in that a spanner 16 is further provided that can adjust the left-right spacing between the ground contact devices. With such a concrete leveling device 1A, it is possible to obtain the same effect as the first form for carrying out the present invention and also to adjust the distance between the left and right ground contact devices 3a (wheels 3a).

[0032] In this embodiment, the spanners 16 are four cylinders that are provided on the bottom surface of the support base 2 and are operated by hydraulic pressure or the like. The wheels 3a are attached to the support base 2 via the spanners 16.

[0033] In addition, an expandable portion may be provided on the left and right side surfaces of the support base 2, and a spanner 16 may be provided so that the expandable portion can be expanded and contracted in the left and right direction. In this case, the wheels 3a are attached to the expandable portion.

[0034] When using the spanner 16 as in this embodiment, the grounding tool 3a may be a clamp-shaped member capable of clamping a reinforcing bar or the like. Even when such a grounding tool 3a is used, the spanner 16 can be extended and contracted to move on the steel frame. [Industrial Applicability]

[0035] The present invention is utilized in the industry of manufacturing concrete leveling devices capable of leveling the surface of ready-mix concrete, mortar, etc., to a substantially horizontal level. [Explanation of symbols]

[0036] 1, 1A: concrete leveling device, 2: support stand, 3: moving device; 4: base member; 5: arm support portion; 6: arm member; 7: concrete leveling tool; 8: one support stand; 9: Connection portion; 10: Other support base; 11: hydraulic cylinder; 12: support arm; 13: telescopic arm; 14: rake support; 15: Rake, 16: Spanner.

Claims

1. The apparatus is comprised of a support platform that is normally in a substantially horizontal position, a moving device provided on the support platform, a base member that is rotatably provided on the support platform, an arm support section that is provided on the base member so as to be slidable in the vertical direction, an extendable arm member that is attached to the arm support section, and a concrete leveling tool that is provided on the arm member so as to be slidable in the vertical direction, The support base is composed of one support base and another support base that is integrally connected to the one support base via a connection portion, and the connection portion connects the one support base and the other support base to be rotatable in a substantially horizontal direction and a torsional direction; A concrete leveling device in which the moving device has at least four grounding devices, one attached to each side of the one support base and the other support base.

2. 2. The concrete leveling device according to claim 1, further comprising a hydraulic cylinder for connecting the one support platform and the other support platform.

3. A concrete leveling device as described in either claim 1 or claim 2, further comprising a spanner capable of adjusting the left-right spacing of the grounding fixtures.

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