Curing material transport device

Abstract

To provide a curing material transport device that reduces burden in work for laying and collecting a concrete curing material to allow rapid work.SOLUTION: A curing material transport device 1 comprises plural running units 10 that run outside a construction range where concrete is laid, a body 2 supported by the running units 10, and a cartridge mounting unit 6 that supports a cartridge 7 on which a concrete curing material 100 is wound detachably on the body 2, and the cartridge mounting unit 6 rotatably supports the cartridge 7 in a direction in which the concrete curing material 100 is rolled up and in which the concrete curing material 100 is rolled up.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a curing material conveying device.

Background Art

[0002] Conventionally, a construction method of applying mortar or concrete to a floor slab constituting a paved road has been known (see, for example, Patent Document 1). Also, a construction method of covering the surface of concrete with a curing sheet during curing after concrete placement has been known (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] When spreading a concrete curing material such as a curing sheet, it has generally been carried out that an operator spreads the folded curing material by hand and lays it manually within the construction range. In this operation, there has been a problem that the load of the operation of spreading a large curing material is large. In particular, in construction using early-strength cement or ultra-early-strength cement, since it is necessary to quickly spread the curing material, a large number of operators have been required. Furthermore, regarding the operation of collecting the curing material after the curing period, there has also been a problem that the load on the operator is large. Therefore, an object of the present invention is to solve the above-described conventional problems, reduce the load of the operations of laying and collecting the concrete curing material, and provide a curing material conveying device that enables prompt operations.

Means for Solving the Problems

[0005] Aspects of the present invention include a plurality of traveling units that travel outside the construction area where concrete is laid, a main body supported by the traveling units, and a cartridge mounting portion that detachably supports a cartridge around which a concrete curing material is wound. The cartridge mounting portion is a curing material conveying device that rotatably supports the cartridge in the direction of feeding out the concrete curing material and the direction of winding up the concrete curing material.

Advantages of the Invention

[0006] According to the present invention, the concrete curing material is conveyed by the curing material conveying device, and it is possible to feed out and wind up the concrete curing material of the cartridge connecting sleeve. Therefore, the workload of the operations related to the laying and recovery of the concrete curing material can be reduced, and prompt operations can be realized.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0008] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the attached drawings. FIG. 1 is a plan view of a curing material conveying device 1 to which the present embodiment is applied. FIG. 2 is a front view of the main body 2 of the curing material conveying device 1 and is a view of the curing material conveying device 1 seen from the direction indicated by reference sign A in FIG. 1. FIG. 3 is a side view of the main part of the curing material conveying device 1 and is a view of the curing material conveying device 1 seen from the direction indicated by reference sign B in FIG. 1. FIG. 4 is an explanatory view of the construction area and construction procedure where the curing material conveying device 1 is used.

[0009] In each of FIGS. 1, 2, and 3, the X-axis, Y-axis, and Z-axis are shown. The X-axis, Y-axis, and Z-axis are perpendicular to each other. The X-axis corresponds to the front-rear direction of the curing material conveying device 1, and the Y-axis corresponds to the left-right direction of the curing material conveying device 1. The Z-axis indicates the vertical direction perpendicular to the ground surface and corresponds to the up-down direction of the curing material conveying device 1. In the following description, the positive direction of the X-axis is the front direction, the positive direction of the Y-axis is the left direction, and the positive direction of the Z-axis is the upward direction.

[0010] First, with reference to FIG. 4, the construction in which the curing material conveying device 1 is used will be described. FIG. 4 schematically shows in a plan view the construction for repairing the paving of road 9. Road 9 is a road for automobiles, for example, a highway or an automobile-only road.

[0011] The curing material conveying device 1 is used when laying a concrete paving on road 9. On urban highways, etc., a concrete slab of a reinforced concrete structure is formed on a steel floor slab, and an asphalt paving is laid thereon. On this type of road, in response to the aging deterioration of the asphalt paving, the asphalt paving is replaced. That is, the asphalt mixture layer on the road surface is cut and removed, and a new asphalt paving is laid on the concrete slab.

[0012] When the asphalt pavement replacement is repeatedly carried out, the upper surface of the concrete floor slab is scraped, so there is a concern that rainwater and anti-freezing agents will easily penetrate into the floor slab. The rainwater and anti-freezing agents that penetrate into the floor slab may cause corrosion of the steel bars inside the floor slab and the accompanying expansion, resulting in the peeling of the covered part of the concrete floor slab. For this countermeasure, conventionally, the repair and reinforcement of the concrete floor slab have been carried out. For repair and reinforcement, the upper surface thickening method of the concrete floor slab is adopted. The upper surface thickening method is a method of pouring concrete on the upper surface of the concrete floor slab to improve the state of the upper surface of the floor slab and increase the covering thickness of the steel bars inside the floor slab to protect the steel bars. As a more excellent upper surface thickening method, there is a method of applying an epoxy resin material or the like that enhances the adhesiveness of the pressure-increasing material to the upper surface of the existing concrete floor slab in order to suppress the delamination between concrete layers. In this method, on top of the epoxy resin material or the like, the placement of steel fiber reinforced concrete (SFRC) or ultra-rapid hard polymer cement mortar (PCM) is carried out.

[0013] Figure 4 illustrates the state in which SFRC is poured after the cutting and removal of the asphalt pavement, the cleaning of the upper surface of the concrete floor slab, and the application of the epoxy resin material are carried out in the construction range 90. In this construction range 90, the concrete finisher 91 levels the surface of the concrete while moving on top of the poured SFRC in the direction indicated by the symbol D1 in the figure.

[0014] The range where the construction by the concrete finisher 91 is completed is indicated by the symbol C. The concrete curing material 100 is spread on the surface of the SFRC in the range C, and curing is carried out until the SFRC exhibits sufficient strength. After the curing period of the SFRC ends, the concrete curing material 100 is recovered.

[0015] In the process of spreading the concrete curing material 100, the curing material conveying device 1 can be used. The curing material conveying device 1 is equipped with a cartridge 7 around which the concrete curing material 100 is wound in a roll shape. The concrete curing material 100 is a building material laid on the surface of the concrete during the curing of the concrete, and it may be any material that can be wound and transported in a roll shape. The concrete curing material 100 may be, for example, a curing sheet, a curing mat, a curing cover, etc., and may be a flame-retardant curing sheet subjected to flame-retardant processing. In this embodiment, the case where the concrete curing material 100 is a sheet-shaped curing sheet is exemplified.

[0016] The curing material conveying device 1 is movable along the longitudinal direction of range C and travels in the direction indicated by reference sign D2 in accordance with the progress of the concrete finisher 91. After the curing material conveying device 1 stops at the laying position of the concrete curing material 100, the concrete curing material 100 is pulled out from the cartridge 7. The curing material conveying device 1 rotatably supports the cartridge 7, and the concrete curing material 100 can be pulled out from the cartridge 7 with the cartridge 7 mounted on the curing material conveying device 1.

[0017] The operator pulls out the concrete curing material 100 from the cartridge 7 in the direction indicated by reference sign D3 to cover the upper surface of the concrete with the concrete curing material 100. After laying the concrete curing material 100, the operator may place a hammer 101 on the concrete curing material 100 to hold the concrete curing material 100. Since the curing material conveying device 1 can mount the hammer 101, the operator can easily perform the work of installing the hammer 101 by using the curing material conveying device 1.

[0018] After the curing period has elapsed, the operator can wind up the concrete curing material 100 in the direction indicated by reference sign D4 by rotating the cartridge 7.

[0019] The construction range 90 extends in the extension direction of the road 9, and the width of the construction range 90 corresponds to one lane of the road 9. For example, in the road 9 having a plurality of lanes, if the upper surface thickening method is constructed for each lane, the concrete floor slab can be repaired without closing the road 9 to traffic. Since the construction of one lane has a narrow construction range, it is difficult to use large machinery, and there is a lot of manual work by workers. However, as shown in FIG. 4, the curing material conveying device 1 can be used even when constructing a narrow construction range 90 of one lane, and the laying and recovery of the concrete curing material 100 can be easily performed.

[0020] Next, with reference to FIGS. 1 to 3, the configuration of the curing material conveying device 1 will be described. The curing material conveying device 1 includes a main body 2. Columns 21 are arranged at the four corners of the main body 2, and traveling units 10 are attached to the lower ends of the respective columns 21. Among the four columns 21, traveling units 10c and 10d are provided on the two columns 21 located at the front of the main body 2, and traveling units 10a and 10b are provided on the two columns 21 located at the rear of the main body 2. When not distinguishing the traveling units 10a, 10b, 10c, and 10d, they will be hereinafter referred to as the traveling unit 10.

[0021] The column 21 has a column portion 21a constituting the upper part of the column 21 and a leg portion 21b constituting the lower part of the column 21. The traveling unit 10 is fixed to the lower end of the leg portion 21b.

[0022] The column portion 21a is a hollow pipe, for example, a square pipe with a rectangular cross-section. The leg portion 21b is a pipe inserted into the column portion 21a, for example, a square prism or a square pipe. In the leg portion 21b, the length of the portion inserted into the column portion 21a is variable. That is, the length of the leg portion 21b inserted into the column portion 21a can be adjusted, and by passing a fixing pin (not shown) through the adjustment holes 21c formed in the column portion 21a and the leg portion 21b respectively, the column portion 21a and the leg portion 21b are fixed at an arbitrary position. By this adjustment, the height of the column 21 can be adjusted.

[0023] In the curing material conveying device 1, each column 21 is erected substantially vertically. A bracket 24 is provided on the column 21, and a vertical frame 23 is connected to the column 21 via the bracket 24. The vertical frame 23 is a columnar member with a rectangular cross-section arranged substantially vertically like the column 21, and it may be hollow. The curing material conveying device 1 includes four vertical frames 23, and one vertical frame 23 is connected to each of the four columns 21 of the curing material conveying device 1.

[0024] The lower end of the vertical frame 23 is connected to a horizontal frame 25 arranged horizontally. The main body 2 includes four horizontal frames 25 corresponding to each of the four vertical frames 23. The horizontal frame 25 extends in the left-right direction of the main body 2. One end of the horizontal frame 25 is connected to the vertical frame 23, and the other end extends toward the inside of the main body 2, that is, the center in the left-right direction, and is inserted into the slider 26.

[0025] The main body 2 includes two sliders 26. The slider 26 is horizontally installed so as to extend in the left-right direction of the main body 2. One slider 26 is arranged at the front of the main body 2, and two horizontal frames 25 arranged at the front of the main body 2 are inserted into this slider 26. The other slider 26 is arranged at the rear of the main body 2, and the horizontal frame 25 arranged at the rear of the main body 2 is inserted into this slider 26.

[0026] With this configuration, at the front of the main body 2, the vertical frames 23 are connected to each of the two columns 21, and the horizontal frames 25 are connected to the lower ends of these two vertical frames 23. Then, the two horizontal frames 25 are inserted into the slider 26. The slider 26 is located at the center in the left-right direction of the main body 2, and the horizontal frames 25 are inserted into its left and right ends. The rear part of the main body 2 is configured in the same way.

[0027] The length of the horizontal frame 25 inserted into the slider 26 can be arbitrarily adjusted. By changing the length of the horizontal frame 25 inserted into the slider 26, the distance between the slider 26 and the vertical frame 23 changes. Thereby, the length of the main body 2 in the left - right direction, that is, the width, can be adjusted. The horizontal frame 25 and the slider 26 can be fixed by a fixture (not shown). When moving the curing material conveying device 1 and when using the curing material conveying device 1 for construction, the horizontal frame 25 and the slider 26 are fixed to each other.

[0028] The main body 2 includes a beam member 28 extending in the front - rear direction of the main body 2. The beam member 28 is a rod - shaped or column - shaped member arranged horizontally. The beam member 28 is arranged across the horizontal frame 25 located at the front part of the main body 2 and the horizontal frame 25 located at the rear part of the main body 2. The main body 2 includes two beam members 28, one beam member 28 is arranged at the left end of the main body 2, and the other beam member 28 is arranged at the right end of the main body 2. The beam member 28 and the horizontal frame 25 are connected by a connecting sleeve 29. The connecting sleeve 29 is fixed to the horizontal frame 25.

[0029] The main body 2 includes a flat mounting table 31. The mounting table 31 is arranged across two sliders 26 and can be used as a table for placing people or objects. For example, a hammer 101 (Fig. 4) can be placed on the mounting table 31. Also, as will be described later, an operator who operates the controller 37 can board the mounting table 31. Further, as shown in the figure, a generator 39 is mounted on the mounting table 31. The generator 39 generates electricity using gasoline or fuel gas as fuel and supplies power to the controller 37.

[0030] A cartridge mounting portion 6 is provided at the front end portion of the main body 2. The cartridge mounting portion 6 is provided on each of the two columns 21 located at the front part of the main body 2. That is, the main body 2 includes cartridge mounting portions 6 at the front parts of both the left and right ends.

[0031] The cartridge mounting portion 6 has a support plate 61 fixed to the column 21. As shown in FIG. 3, the support plate 61 is arranged to protrude forward from the column 21, and a recess 62 is formed at the tip of the support plate 61. The cartridge 7 can be detachably mounted in the recess 62.

[0032] The cartridge 7 includes a core 70, and the concrete curing material 100 is wound around the core 70 in a roll shape. The core 70 includes a plurality of support rods 71 arranged in parallel, a support disk 73 attached to the support rods 71, a connector 75, an end disk 77, and a shaft 78.

[0033] The support disk 73 is a circular plate-like member that fixes the support rods 71 so that the plurality of support rods 71 remain parallel, and the support rods 71 penetrate the support disk 73. The end disk 77 is a circular plate-like member connected to the longitudinal ends of the support rods 71. The support disk 73 is arranged at a predetermined interval between the two end disks 77. The connectors 75 connect the respective support rods 71 to the end disks 77.

[0034] In this embodiment, six support rods 71 are arranged parallel to each other. The six support rods 71 are fixed to the end disk 77 so as to be located on one circumference by the connectors 75. That is, in the core 70, the plurality of support rods 71 are arranged so as to form a single cylinder, and the concrete curing material 100 is wound around the circumference of this cylinder.

[0035] The end disk 77 is provided with a shaft 78 protruding in the longitudinal direction of the support rod 71. The shaft 78 is located at the center of the end disk 77 and the cylinder composed of the plurality of support rods 71, and the shaft 78 protrudes from both longitudinal ends of the core 70.

[0036] When the cartridge 7 is attached to the cartridge mounting portion 6, the shaft 78 fits into the recess 62. The shaft 78 is rotatable while engaged with the recess 62. For this reason, the cartridge 7 is rotatable in a state where the cartridge 7 is attached to the curing material conveying device 1. By an operator rotating the cartridge 7 by hand, operations of pulling out and spreading the concrete curing material 100 from the cartridge 7 and winding up the concrete curing material 100 by the cartridge 7 can be performed.

[0037] The curing material conveying device 1 is supported so as to be movable by four columns 21 and a traveling unit 10 disposed at the lower part of the columns 21. The traveling units 10a and 10b disposed at the rear part of the main body 2 have a common configuration. As shown in FIG. 3, the traveling unit 10b includes a wheel 41 and a support block 42 that supports the wheel 41. The support block 42 is fixed to the lower end of the leg portion 21b and rotatably holds the column 21 via a shaft 43. No power is applied to the wheel 41, and the wheel 41 rotates as the main body 2 moves. The traveling units 10a and 10b are attached to the column 21 so as to rotate in the front-rear direction of the main body 2.

[0038] The traveling units 10c and 10d located at the front part of the main body 2 have a common configuration. As shown in FIG. 3, the traveling unit 10c includes an endless belt 51, a roller 53 and a driving wheel 54 that are located inside the belt 51 and support the belt 51. The roller 53 is rotatably connected to the lower end of the leg portion 21b via a connecting portion 52. The driving wheel 54 is connected to a motor 55 fixed to the lower end of the leg portion 21b and rotates by the driving force of the motor 55. With this configuration, the belt 51 operates as an endless track by the driving force of the motor 55 to move the main body 2. The traveling units 10c and 10d are attached to the column 21 in the direction in which the belt 51 rotates in the front-rear direction of the main body 2.

[0039] For this reason, the main body 2 is movable in the front-rear direction of the main body 2 when the traveling units 10c and 10d operate by the power of the motor 55.

[0040] The motor 55 is connected to the power supply unit 57. The power supply unit 57 is provided at the left front part and the right front part of the main body 2 corresponding to each of the traveling units 10c and 10d. The power supply unit 57 is connected to the controller 37, and power is supplied from the controller 37 to the power supply unit 57. The power supply unit 57 performs voltage conversion and the like on the power supplied from the controller 37, and supplies driving power to the motor 55.

[0041] A generator 39 mounted on the mounting table 31 is connected to the controller 37. As described above, the generator 39 supplies the generated power to the controller 37.

[0042] The controller 37 includes a switch (not shown) and the like. By an operator operating the controller 37, power is supplied to the motor 55 of the traveling unit 10c and the motor 55 of the traveling unit 10d, and the traveling units 10c and 10d are driven. By operating the controller 37, the curing material conveying device 1 can be moved forward and backward. The operator operating the controller 37 may board the mounting table 31.

[0043] By an operator operating the controller 37, the curing material conveying device 1 can move in the extending direction of the construction range 90 (FIG. 4). All of the four traveling units 10 provided in the curing material conveying device 1 are located outside the construction range 90. For this reason, the main body 2 can be traveled without affecting the concrete leveled by the concrete finisher 91 in the construction range 90.

[0044] The curing material conveying device 1 can adjust the lateral width of the main body 2 by changing the connection position between the horizontal frame 25 and the slider 26. For this reason, the lateral width of the main body 2 can be adjusted so that the traveling unit 10 is located outside the construction range 90 and the concrete curing material 100 can be spread on the concrete. Thereby, in the construction range 90 extending in the extending direction of the road 9, the concrete curing material 100 can be efficiently spread and recovered.

[0045] Since the cartridge 7 is rotatably supported in the cartridge mounting portion 6, the operator can pull out the concrete curing material 100 from the cartridge 7 by pulling the concrete curing material 100. Thereby, the concrete curing material 100 can be easily spread over the concrete. Further, when the operator rotates the cartridge 7, the concrete curing material 100 can be wound around the cartridge 7, so that the concrete curing material 100 can be easily recovered.

[0046] In the above embodiment, the horizontal frame 25 and the slider 26 are an example of the configuration of the expansion and contraction mechanism. The mounting table 31 is an example of the boarding portion. The motor 55 is an example of the drive portion.

[0047] As described above, the curing material conveying device 1 to which the present invention is applied includes a plurality of traveling units 10 that travel outside the construction range where the concrete is laid, and a main body 2 supported by the traveling units 10. The curing material conveying device 1 includes a cartridge mounting portion 6 that detachably supports a cartridge 7 around which a concrete curing material 100 is wound. The cartridge mounting portion 6 rotatably supports the cartridge 7 in the direction in which the concrete curing material 100 is paid out and the direction in which the concrete curing material 100 is wound up.

[0048] According to this configuration, the curing material conveying device 1 including the main body 2 movable by the traveling unit 10 can pay out and wind up the concrete curing material 100 from the cartridge 7. Thereby, the curing material conveying device 1 is moved to the position where the concrete curing material 100 is required, and the operations of paying out and spreading the concrete curing material 100 from the curing material conveying device 1 and recovering the concrete curing material 100 can be performed. Therefore, for example, compared with the case of manually handling the concrete curing material 100, the concrete curing material 100 can be efficiently deployed and recovered in a short time. Therefore, the load of the work of laying and recovering the concrete curing material 100 is reduced, and prompt work is enabled.

[0049] In the curing material conveying device 1, a motor 55 for driving the traveling unit 10 is provided in at least a part of the plurality of traveling units 10. According to this configuration, the curing material conveying device 1 can be driven to travel by power. Therefore, the curing material conveying device 1 can be moved to a required position, and the laying and recovery of the concrete curing material 100 can be executed promptly.

[0050] In the curing material conveying device 1, the main body 2 includes a mounting platform 31 on which an operator can board. According to this configuration, the movement of the curing material conveying device 1 and the construction using the curing material conveying device 1 can be executed more promptly, and the burden on the operator can be reduced.

[0051] In the curing material conveying device 1, the cartridge 7 is configured by winding the concrete curing material 100 around the core 70, and the traveling units 10 are arranged at both ends in the width direction of the main body 2. The main body 2 has a telescopic mechanism that can be telescoped in the width direction of the main body 2, and the main body 2 can be telescoped according to the width of the core. According to this configuration, the width of the main body 2 can be expanded and contracted according to the size of the construction range in which the curing material conveying device 1 is used. Therefore, the curing material conveying device 1 can be traveled along the construction range, and the laying and recovery of the concrete curing material 100 can be performed, and the construction related to the concrete curing material 100 can be performed more efficiently.

[0052] The above embodiment shows a specific example to which the present invention is applied, and does not limit the form to which the invention is applied.

[0053] In the above embodiment, the configuration in which the operator manually rotates the cartridge 7 has been described, but this is an example. For example, the cartridge mounting portion 6 may be provided with a rotation mechanism for rotating the shaft 78 by a motor. In this case, the motor for rotating the shaft 78 may be configured to be controllable by the controller 37. Further, in order to make it easier for the operator to perform the operation of rotating the cartridge 7, a lever or the like that the operator grips when rotating the cartridge 7 may be connected to the shaft 78.

[0054] Further, in the above-described embodiment, a mechanism for fixing the wheel 41 may be provided. For example, during the operation of deploying or recovering the concrete curing material 100, a fixing mechanism for preventing the rotation of the wheel 41 may be provided in the traveling units 10a and 10b so that the main body 2 does not move.

[0055] In the above-described embodiment, a configuration in which power is supplied from the generator 39 to the controller 37 is illustrated. However, the main body 2 may be configured to be capable of supplying power to the controller 37 from the outside without mounting the generator 39.

[0056] Further, in the curing material conveying device 1 described in the above-described embodiment, the number of support rods 71 and support disks 73 constituting the cartridge 7, and other configurations are not limited. Also, other detailed configurations can be arbitrarily changed.

Explanation of Reference Numerals

[0057] 1 Curing material conveying device 2 Main body 6 Cartridge mounting portion 7 Cartridge 9 Road 10, 10a, 10b, 10c, 10d Traveling unit 21 Column 21a Column portion 21b Leg portion 21c Adjustment hole 23 Vertical frame 24 Bracket 25 Horizontal frame (telescoping mechanism) 26 Slider (telescoping mechanism) 28 Beam member 29 Connecting sleeve 31 Mounting table (riding portion) 37 Controller 39 Generator 41 Wheel 42 Support block 43 Shaft 51 Belt 52 Connecting portion 53 Rotating wheel 54 Driving wheel 55 Motor (drive unit) 57 Power supply unit 61 Support plate 62 Recess 70 Core 71 Support rod 73 Support disk 75 Connector 77 End disk 78 Shaft 90 Construction range 91 Concrete finisher 100 Concrete curing material 101 Hammer

Claims

1. A plurality of traveling units that travel outside the construction area where concrete is paved, A main body supported by the traveling units, A cartridge mounting part that detachably supports a cartridge around which a concrete curing material is wound to the main body, Comprising, The cartridge mounting part is a curing material conveying device that rotatably supports the cartridge in the direction of feeding out the concrete curing material and the direction of winding up the concrete curing material.

2. The curing material conveying device according to claim 1, wherein a driving part for driving the traveling unit is provided in at least a part of the plurality of traveling units.

3. The curing material conveying device according to claim 2, wherein the main body includes a boarding part on which an operator can board.

4. The cartridge is configured by winding the concrete curing material around a core, The traveling units are arranged at both ends in the width direction of the main body, The curing material conveying device according to claim 1, wherein the main body has a telescopic mechanism that can be telescoped in the width direction of the main body, and the main body can be telescoped according to the width of the core.

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