Steel plate cleaning device

Abstract

To provide a steel plate cleaning device that can be made to a smaller space and have enhanced cleaning power. [Solution] The steel plate cleaning device 1 comprises a mounting table 3 on which a rectangular steel plate 2 is placed in a predetermined position, a plurality of spray nozzles 4 that spray cleaning water onto both the upper and lower surfaces of the steel plate 2 while moving above and below the mounting table 3, and a rotating squeegee 5 that scrapes off dirt from both the upper and lower surfaces of the steel plate 2 while moving above and below the mounting table 3. The plurality of spray nozzles 4 are arranged along the longitudinal direction of the steel plate 2 placed on the mounting table 3 and are configured to spray cleaning water onto the surface of the steel plate 2 while moving in the short direction of the steel plate 2 placed on the mounting table 3, and the rotating squeegee 5 is configured to move in the short direction of the steel plate 2 and rotate around an axis extending in the longitudinal direction of the steel plate 2.

Description

Technical Field

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[0001] The present invention relates to a cleaning device for steel plates used at civil engineering sites and the like.

Background Art

[0002] Conventionally, cleaning devices for cleaning soiled steel plates used at construction sites have been known (such as Patent Documents 1 to 4). This type of steel plate cleaning device places the soiled steel plate after use on a mounting table and cleans it by spraying cleaning water while moving the steel plate on the mounting table.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, for a used steel plate, in order to move the steel plate on the mounting table, a moving space is required on the mounting table, and the mounting table becomes larger. Also, mud that has dried and adhered to the steel plate may not be sufficiently cleaned with only cleaning water in some cases.

[0005] In order to solve the above problems, the main object of the present invention is to provide a steel plate cleaning device that can achieve a smaller space and enhanced cleaning power.

Means for Solving the Problems

[0006] To achieve the above objective, a steel plate cleaning apparatus according to one aspect of the present invention includes: a mounting platform on which a rectangular steel plate is placed in a predetermined position; a plurality of spray nozzles that spray cleaning water onto both the upper and lower surfaces of the steel plate while moving above and below the mounting platform; and a rotating squeegee that scrapes off dirt from both the upper and lower surfaces of the steel plate while moving above and below the mounting platform. It is equipped with.

[0007] The plurality of spray nozzles are arranged along the longitudinal direction of the steel plate placed on the stand described above, and are configured to spray cleaning water onto the surface of the steel plate while moving in the short direction of the steel plate placed on the stand described above, and the rotating squeegee may be configured to move in the short direction of the steel plate and rotate around an axis extending in the longitudinal direction of the steel plate.

[0008] The mounting base comprises a plurality of support frames arranged in parallel and supporting the steel plate along its shorter side, each of which comprises a horizontal bar on which the steel plate is placed and a support column that supports the horizontal bar, and the horizontal bar may have a plurality of protrusions on its upper surface that support the steel plate.

[0009] The rotating squeegee that moves below the mounting platform may have a notched groove through which the horizontal bar can pass.

[0010] The rotary squeegee may comprise a drive shaft extending in the longitudinal direction of the steel plate placed on the base described above, and a squeegee plate provided along the longitudinal direction of the drive shaft.

[0011] The squeegee plate is preferably made of hard rubber. [Effects of the Invention]

[0012] According to the present invention, since the spray nozzle and the rotating squeegee move relative to the steel plate, the device can be made smaller compared to a cleaning device in which the steel plate moves. Furthermore, since the soil and sand adhering to the steel plate are washed and removed by water washing and squeegeeing, the cleaning power can be enhanced compared to a cleaning device that uses water washing only.

[0013] Further, by moving the injection nozzle and the rotary squeegee in the width direction of the paving iron plate, it can be cleaned in a shorter time than moving in the longitudinal direction.

Brief Description of the Drawings

[0014] [Figure 1] It is a perspective view showing an embodiment of the paving iron plate cleaning device according to the present invention. [Figure 2] It is a perspective view of the paving iron plate cleaning device of FIG. 1 viewed from another direction. [Figure 3] It is a sectional view taken along the line III-III of FIG. 2. [Figure 4] It is a sectional view taken along the line IV-IV of FIG. 2. [Figure 5] It is a sectional view taken along the line V-V of FIG. 2. [Figure 6] It is a rear view showing the inside of the water storage tank of the paving iron plate cleaning device of FIG. 1. [Figure 7] It is a right side view of the paving iron plate cleaning device of FIG. 1. [Figure 8] It is an enlarged view of part VII of FIG. 7. [Figure 9] It is an enlarged view of part VIII of FIG. 8.

Embodiments for Carrying Out the Invention

[0015] An embodiment of the paving iron plate cleaning device according to the present invention will be described below with reference to the drawings.

[0016] Referring to FIGS. 1 to 4, the paving iron plate cleaning device 1 includes a mounting table 3 for placing a rectangular paving iron plate 2 at a predetermined position, a plurality of injection nozzles 4 that move above and below the mounting table 3 and inject cleaning water W onto both the upper and lower surfaces of the paving iron plate 2, and a rotary squeegee 5 that moves above and below the mounting table 3 and scrapes off dirt on both the upper and lower surfaces of the paving iron plate 2. FIG. 4 shows a state in which the cleaning water W is being injected radially from the injection nozzles 4.

[0017] The mounting base 3 comprises a plurality of support frames 3a arranged in parallel and supporting the steel plate 2 along its shorter side S. Each support frame 3a includes a horizontal bar 3a1 on which the steel plate 2 is placed, and support columns 3a2 that support both ends of the horizontal bar 3a1.

[0018] The support columns 3a2 are fixed to the main frame 3b. The main frame 3b is rectangular in plan view. When a forklift (not shown) places the steel plates 2 on the horizontal bar 3a1, the forks of the forklift are inserted between the parallel, adjacent support columns 3a2, 3a2. Therefore, the height H of the horizontal bar 3a1 from the main frame 3b is set to a height that allows the forks to enter.

[0019] The main frame 3b is equipped with a receiving tank 6 below the horizontal bar to receive the sediment water after washing. The receiving tank 6 has a sloping bottom surface 6a that slopes downward from one side to the other in the short direction S. A water storage tank 7 is installed along the other side (the lower side) of the sloping bottom surface 6a, so that the sediment water received in the receiving tank 6 flows into the water storage tank 7.

[0020] Figure 6 is a partial perspective rear view. Referring to Figure 6, the water storage tank 7 is equipped with a first submersible pump 8 that supplies cleaning water to the spray nozzles 4. The sediment water that flows into the water storage tank 7 is sent from a second submersible pump 9 installed inside the water storage tank 7 to a sediment separator 11, where it is separated into water and sediment. The separated water is then returned from the sediment separator 11 to the water storage tank 7.

[0021] Figure 7 is a right side view, and Figure 8 is an enlarged view of section VII in Figure 7. Referring to Figures 6 and 8, the horizontal bar 3a1 has a plurality of protrusions 3a3 on its upper surface that support the steel plate 2. By supporting the steel plate 2 with the plurality of protrusions 3a3, the area on the back surface of the steel plate 2 that does not reach with cleaning water can be minimized.

[0022] The horizontal bar 3a1 has a recess 3a4 (Figure 8) formed on its upper surface to match the shorter side dimension of the steel plate 2, into which the steel plate 2 fits. Multiple protrusions 3a3 are formed in the recess 3a4. Typical dimensions of the steel plate 2 are 3 x 6 feet (914 mm x 1829 mm), 4 x 8 feet (1219 mm x 2438 mm), 5 x 10 feet (1524 mm x 3048 mm), and 5 x 20 feet (1524 mm x 6096 mm). Horizontal bars 3a1 with different recess dimensions 3a4 are provided so that steel plates 2 of different dimensions can be placed in the designated position on the mounting base 3, and the horizontal bars 3a1 are interchangeably attached to the support columns 3a2. In the illustrated example, a groove-shaped receiving portion 3a5 and a female-threaded flange 3a6 are formed on the support column 3a2. The receiving portion 3a5 receives the end of the horizontal bar 3a1, and the flange 3a7 with bolt holes protruding from the horizontal bar 3a1 and the female-threaded flange 3a6 on the support column 3a2 are fastened together by a male screw 3a8.

[0023] Multiple spray nozzles 4 are arranged along the longitudinal direction of the steel plate 2 placed on the mounting base 3, and are configured to spray cleaning water onto the surface of the steel plate 2 while moving in the short direction of the steel plate 2 placed on the mounting base 3.

[0024] The injection nozzle 4 is attached to the gantry frame 10. The gantry frame 10 comprises legs 10a at both ends and horizontal sections 10b mounted on the legs 10a. The legs 10a are equipped with wheels 10c (Figure 7) at their lower ends. The wheels 10c travel on rails 3c provided along the shorter side of the main frame 3b. A drive motor 10d that rotates the wheels 10c is attached to the legs 10a. By rotating the drive motor 10d in forward and reverse directions, the gantry frame 10 reciprocates in the shorter side S of the mounting platform 3.

[0025] The injection nozzle 4 is mounted on a water pipe 4a attached to a gate-type frame 10, as shown in Figure 2. The water pipe 4a is connected to the discharge port of the first submersible pump 8 installed in the water storage tank 7 by a water supply pipe 8a, as shown in Figure 6. The water supply pipe 8a is composed of a rigid pipe 8a1 made of metal or plastic and a flexible hose 8a2 connected to the rigid pipe 8a1, as shown in Figure 2. The rigid pipe 8a1 is formed in an L-shape with a vertical pipe section extending in the height direction and an arm pipe section extending horizontally from the upper end of the vertical pipe section. The hose 8a2 has a length that can follow the reciprocating movement of the gate-type frame 10.

[0026] The rotating squeegee 5 is configured to move in the short direction of the steel plate 2 while rotating around an axis X extending in the longitudinal direction of the steel plate 2, as shown in Figure 4.

[0027] The rotary squeegee 5 comprises a drive shaft 5a extending in the longitudinal direction L of the steel plate 2 placed on the mounting base 3, and squeegee plates 5b provided along the longitudinal direction of the drive shaft 5a. In the illustrated example, three squeegee plates 5b are fixed to the drive shaft 5a.

[0028] The drive shaft 5a is stretched across the legs 10a, 10a and rotatably supported on the gantry frame 10. The drive shaft 5a is rotationally driven by a drive motor 5c attached to the gantry frame 10. The squeegee plate 5b is made of hard rubber. The rotating squeegee 5 that moves below the mounting base 3 has a notched groove 5d through which the horizontal bar 3a1 can pass.

[0029] The steel plate cleaning device 1, having the above configuration, cleans the steel plates 2 as follows. In its initial position before cleaning begins, the gantry frame 10 is located on the rear side of the mounting platform 3, that is, on the lower side of the inclined surface of the receiving tank 6, as shown in Figure 1. In this state, the steel plates 2 are placed on the mounting platform 3. The steel plate 2 is placed in a designated position on the mounting platform 3, and the first submersible pump 8 and drive motors 10d and 5c are activated. As a result, the gantry frame 10 moves, and cleaning water is sprayed from the spray nozzle 4 onto both the upper and lower surfaces of the steel plate 2 for cleaning, while the rotating squeegee 5 rotates to scrape off the soil and sand adhering to both the upper and lower surfaces of the steel plate 2. The spray nozzle 4 is positioned on the front side of the mounting platform 3 relative to the rotating squeegee 5, that is, on the higher side of the inclined surface of the receiving tank 6 relative to the rotating squeegee 5. The spray nozzle 4 sprays cleaning water onto the steel plate 2 first, and then the rotating squeegee 5 scrapes the surface of the steel plate 2. The soil and sand adhering to the surface of the steel plate 2 are easily removed because they are scraped off by the rotating squeegee 5 while wet with cleaning water. In addition, by using hard rubber for the rotating squeegee 5, the soil and sand adhering to the steel plate 2 can be scraped off without damaging the steel plate 2. Multiple spray nozzles 4 and rotating squeegees 5 are arranged along the entire length of the steel plate 2 in the longitudinal direction. By moving them in the short direction while spraying cleaning water and scraping with the rotating squeegees 5, the cleaning time can be shortened compared to cleaning while moving the spray nozzles 4 in the longitudinal direction of the steel plate 2, or while moving the steel plate 2 in the longitudinal direction relative to a fixed spray nozzle.

[0030] The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention. [Explanation of Symbols]

[0031] 1. Steel plate cleaning device 2 Steel plates 3. Mounting platform 3a Support frame 3a1 Horizontal bar 3a2 post 3a3 Protrusion 4 spray nozzles 5-rotation squeegee 5a Drive shaft 5b Squeegee 5d Notched groove

Claims

1. A mounting platform for placing a rectangular steel plate in a designated position, Multiple spray nozzles move above and below the mounting platform to spray cleaning water onto both the upper and lower surfaces of the steel plate, A rotating squeegee that moves above and below the mounting platform to scrape off dirt from both the upper and lower surfaces of the steel plate, A steel plate cleaning device equipped with the following features.

2. The plurality of spray nozzles are arranged along the longitudinal direction of the steel plate placed on the aforementioned stand, and are configured to spray cleaning water onto the surface of the steel plate while moving in the short direction of the steel plate placed on the aforementioned stand. The rotating squeegee is configured to move in the short direction of the iron plate while rotating around an axis extending in the longitudinal direction of the iron plate. The steel plate cleaning apparatus according to claim 1.

3. The mounting platform comprises a plurality of support frames arranged in parallel and supporting the steel plate along its shorter side. Each of the support frames comprises a horizontal bar on which the steel plates are placed, and a support column that supports the horizontal bar. The horizontal bar has a plurality of protrusions on its upper surface that support the steel plate. The steel plate cleaning apparatus according to claim 1.

4. The steel plate cleaning apparatus according to claim 3, wherein the rotating squeegee that moves below the mounting platform has a notched groove through which the horizontal bar can pass.

5. The iron plate cleaning apparatus according to claim 2, wherein the rotary squeegee comprises a drive shaft extending in the longitudinal direction of the iron plate placed on the stand described above, and a squeegee plate provided along the longitudinal direction of the drive shaft.

6. The steel plate cleaning apparatus according to claim 5, wherein the squeegee plate is made of hard rubber.

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