Mobile cart-type high-pressure washer

Abstract

The challenge is to clean the girders beneath the bridge relatively easily. [Solution] A mobile trolley-type high-pressure washer 100 for cleaning the girders H under a bridge, comprising: a trolley 1 that can carry at least a water supply tank 2 and a pump 3 and is positioned on the bridge U and is movable; a cleaning hose 9 that can supply cleaning water from the water supply tank 2 through the pump 3 to the vicinity of the girders below the bridge; pipes 4, 5, 6, 7 that can support the cleaning hose 9 from the bridge U to below the bridge; and a spray nozzle 8 that can spray cleaning water from the cleaning hose 9.

Description

Technical Field

[0001] The present invention relates to a movable cart-type high-pressure washer capable of cleaning the girders under a bridge while moving on the bridge.

Background Art

[0002] One of the major issues in the maintenance and management of road structures is corrosion damage caused by adhering salt content resulting from the spreading of deicing agents. The upper part of the bridge road is easy to clean, but cleaning the girders at the lower part of the bridge is not easy. If corrosion damage caused by salt adhering to the girders is left unattended, the salt adhering to the steel members will erode their cross-sections, accelerate the progress of corrosion, and even threaten the structural safety. Therefore, washing away this salt content is critical for bridge maintenance. However, most bridges require large-scale scaffolding and aerial work vehicles for operations, which also hinders maintenance management in terms of work efficiency and cost.

[0003] Patent Document 1 describes that a flexible rail body is stretched in the span direction below the bridge girder, and a cart equipped with a cleaning nozzle travels along this rail body to inject cleaning water from the lower side to the upper side of the girder.

Prior Art Documents

Patent Documents

[0004] Patent Document 1: Japanese Unexamined Patent Application Publication No. 11-100814

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the device described in Patent Document 1 has a problem that the flexible rail body must be stretched in the span direction below the girder, which is time-consuming.

[0006] The present invention solves the above problems and aims to clean the girders under the road relatively easily.

Means for Solving the Problems

[0007] To solve the above problems, the present invention provides a mobile trolley-type high-pressure washer for cleaning girders under bridges, A trolley capable of carrying at least a water tank and pump, which can be positioned on the bridge and moved, A cleaning hose capable of supplying cleaning water from the water tank through the pump to the vicinity of the girder below the bridge, A pipe capable of supporting the cleaning hose from the bridge to below the bridge, The system includes a spray nozzle capable of spraying cleaning water from the cleaning hose. 、 The pipe comprises a horizontal pipe extending from the trolley and capable of being bent at approximately a right angle, a vertical pipe connected to the end of the horizontal pipe opposite to the trolley and capable of being raised and lowered, and a wire extending from the trolley to the vertical pipe. By winding the aforementioned wire with the winch on the trolley, the vertical pipe rises and then the horizontal pipe bends at approximately a right angle. This invention provides a mobile cart-type high-pressure washer characterized by the following features.

[0008] This configuration allows for relatively easy cleaning of the girders beneath the road by supporting the cleaning hose, extending the pipe from the bridge to the underside of the girder, and moving a trolley along the pipe. Furthermore, pipes extending from the bridge to the underside of the bridge can be easily retrieved back up to the top of the bridge.

[0011] In a mobile trolley-type high-pressure washer, the horizontal pipe may be configured to slide using a bearing-equipped pulley provided on the trolley.

[0012] This configuration allows the horizontal pipes to be moved relative to the trolley, enabling them to be moved and adjusted to the appropriate position depending on the distance to the bridge safety fence.

[0013] In a mobile trolley-type high-pressure washer, the vertical pipe may be configured to include an upper vertical pipe on the side of the horizontal pipe and a lower vertical pipe whose tip can be connected to the upper vertical pipe.

[0014] This configuration allows the vertical pipes to be lowered when cleaning the bridge girders and raised when retrieving them onto the bridge.

[0015] A mobile cart type high-pressure washer, wherein an end of the lower vertical pipe opposite to the upper vertical pipe side is provided with a nozzle pipe having the spray nozzle, A handle portion is provided at the tip of the horizontal pipe on the vertical pipe side, The upper vertical pipe and the lower vertical pipe are square pipes having a substantially square cross section, The handle portion has a vertical pipe handle hole formed as a square hole into which the upper vertical pipe made of the square pipe can be inserted, and a vertical pipe rotating handle capable of rotating the vertical pipe handle hole, By inserting the upper vertical pipe into the vertical pipe handle hole, the upper vertical pipe is connected to the horizontal pipe, and by rotating the vertical pipe rotating handle, the upper vertical pipe and the lower vertical pipe are rotated, so that the direction of the nozzle pipe can be changed approximately every 90°.

[0016] With this configuration, by rotating the handle portion, the direction of the nozzle pipe can be easily directed to the position to be cleaned, and the spraying direction of the cleaning water from the spray nozzle can be changed.

[0017] A mobile cart type high-pressure washer, wherein a plurality of nozzle pipes having different lengths may be provided, and the nozzle pipes are replaceable with respect to the vertical pipe.

[0018] With this configuration, by making the nozzle pipes of different lengths replaceable, it is possible to adapt to various work sites.

[0019] A mobile cart type high-pressure washer, Attached to the lower vertical pipe or the nozzle pipe The image of the girder captured by the camera is displayed on the bridge A configuration provided with a monitor TV capable of displaying thereon may be adopted.

[0020] With this configuration, it is possible to confirm the cleaning position and the cleaning status on the bridge girder from the bridge. Effects of the Invention

[0021] With the mobile cart type high-pressure washer of the present invention, bridge girders can be cleaned relatively easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] [Figure 1] A diagram illustrating the mobile cart type high-pressure washer in Embodiment 1 of the present invention. [Figure 2] A side view of the cart in the mobile cart type high-pressure washer of Embodiment 1 of the present invention. [Figure 3] A front view of the cart in the mobile cart type high-pressure washer of Embodiment 1 of the present invention. [Figure 4] A diagram showing the state in which the mobile cart type high-pressure washer in Embodiment 1 of the present invention cleans a girder. [Figure 5] The first diagram illustrating how the horizontal pipe and vertical pipe in the mobile cart type high-pressure washer of Embodiment 1 of the present invention are retracted. [Figure 6] The second diagram illustrating how the horizontal pipe and vertical pipe in the mobile cart type high-pressure washer of Embodiment 1 of the present invention are retracted. [Figure 7] The third diagram illustrating how the horizontal pipe and vertical pipe in the mobile cart type high-pressure washer of Embodiment 1 of the present invention are retracted. [Figure 8] The fourth diagram illustrating how the horizontal pipe and vertical pipe in the mobile cart type high-pressure washer of Embodiment 1 of the present invention are retracted. DETAILED DESCRIPTION OF EMBODIMENTS FOR CARRYING OUT THE INVENTION EMBODIMENTS

[0023] Embodiment 1 of the present invention will be described with reference to Figures 1-8. Figure 1 is a diagram illustrating the mobile trolley type high-pressure washer in Embodiment 1 of the present invention. Figure 2 is a side view of the trolley in the mobile trolley type high-pressure washer in Embodiment 1 of the present invention. Figure 3 is a front view of the trolley in the mobile trolley type high-pressure washer in Embodiment 1 of the present invention. Figure 4 is a diagram showing the mobile trolley type high-pressure washer in Embodiment 1 of the present invention cleaning a girder, where (a) shows the spray nozzle positioned towards the front and (b) shows the spray nozzle positioned towards the back. Figure 5 is the first diagram illustrating the contraction of the horizontal and vertical pipes in the mobile trolley type high-pressure washer in Embodiment 1 of the present invention. Figure 6 is the second diagram illustrating the contraction of the horizontal and vertical pipes in the mobile trolley type high-pressure washer in Embodiment 1 of the present invention. Figure 7 is the third diagram illustrating the contraction of the horizontal and vertical pipes in the mobile trolley type high-pressure washer in Embodiment 1 of the present invention. Figure 8 is a fourth diagram illustrating the process of retracting the horizontal and vertical pipes in the mobile trolley-type high-pressure washer of Embodiment 1 of the present invention.

[0024] The mobile trolley-type high-pressure washer 100 in Embodiment 1 includes a trolley 1 that is mounted on the bridge and is movable, equipped with at least a water supply tank 2 and a pump 3; a cleaning hose 9 that can supply cleaning water from the water supply tank 2 through the pump 3 to the vicinity of the bridge girder H; pipes 4, 5, 6, and 7 that can support the cleaning hose 9 from the trolley 1 on the bridge to the bridge girder; and a spray nozzle 8 that can spray cleaning water from the cleaning hose 9, allowing the bridge girder to be cleaned while moving along the bridge.

[0025] The water supply tank 2 can store approximately 100 liters of cleaning water. The cleaning water may be tap water, river water, or water to which cleaning solution has been added. The water supply tank 2 is mounted on a trolley for portability. The cleaning water in the water supply tank 2 is connected to the pump 3 via a hose, and when the pump 3 is driven, it is discharged into the cleaning hose 9.

[0026] In Example 1, the water tank 2 and pump 3 were mounted on the trolley 1, but this configuration is not necessarily limited to this and can be modified as appropriate. For example, the water tank 2 and pump 3 may be placed on the road instead of being mounted on the trolley 1.

[0027] Furthermore, in Example 1, the water supply tank 2 was designed to hold approximately 100L of cleaning water and be portable, but this is not necessarily limited and can be modified as appropriate. For example, it may be designed to hold more than 100L of cleaning water, or it may be made smaller by holding less than 100L of cleaning water. Also, the water supply tank 2 may be fixed to a trolley instead of being portable.

[0028] The cleaning hose 9 is normally positioned on the trolley 1 as shown in Figure 2, but when cleaning the girders, it is supported by the hose hook 18 and can be extended approximately 4m along pipes 4, 5, 6, and 7 to the bridge girders. The tip of the cleaning hose 9 has a spray nozzle 8, and when the pump 3 is driven, cleaning water can be sprayed out.

[0029] Pump 3 uses a pump designed for engine-driven high-pressure washers, but is not necessarily limited to this and can be changed as appropriate. For example, an electric pump or a manual pump may be used.

[0030] In Example 1, the cleaning hose 9 was configured to extend to approximately 4m, but this is not necessarily limited to this and can be modified as appropriate. For example, it may be less than 4m, or it may be configured to extend to a length greater than 4m.

[0031] The pipe system includes horizontal pipes 4 (4a, 4b) mounted on the trolley 1 and bendable at approximately a right angle by hinges 22, vertical pipes 5, 6 connected to the horizontal pipes 4b and capable of sliding up and down, and a wire 21 extending from the trolley 1 to the vertical pipes 5, 6. By winding the wire 21 with the winch 10 on the trolley 1, the stoppers 24 on the vertical pipes 5, 6 rise to the handle section 26 (described later), and the horizontal pipe 4b is bent at approximately a right angle to the horizontal pipe 4a, allowing it to be retrieved onto the bridge. The horizontal pipe 4a can slide using bearing-equipped pulleys 27 (27a, 27b, 27c, 27d) mounted on the trolley 1. This allows the horizontal pipe 4a to be extended and retracted relative to the trolley 1, enabling adjustment to the appropriate position of the horizontal pipe depending on the distance to the bridge's safety fence.

[0032] The vertical pipes 5 and 6 consist of an upper vertical pipe 5 and a lower vertical pipe 6 that can be connected to the upper vertical pipe 5. A nozzle pipe 7 is also provided at the end of the lower vertical pipe 6 opposite to the upper vertical pipe side, connected in a direction perpendicular to the lower vertical pipe 6. The nozzle pipe 7 has a spray nozzle 8 attached to the end of the cleaning hose 9. The nozzle pipe 7 comes in a long type and a short type, and is interchangeable so that it can be attached to the lower vertical pipe 6 in the appropriate length depending on the site conditions.

[0033] A nozzle pipe 7 with a spray nozzle 8 is attached to the end of the lower vertical pipe 6 opposite to the upper vertical pipe 5, and a handle portion 26 is attached to the tip of the horizontal pipe 4b on the side facing the upper vertical pipe 5. The upper vertical pipe 5 and the lower vertical pipe 6 are made of square pipes with a roughly square cross-section, and the handle portion 26 has a vertical pipe handle hole 15 into which the upper vertical pipe 5, which is made of square pipe, is inserted and cannot be rotated, and a vertical pipe rotation handle 14 that can rotate the vertical pipe handle hole 15. When the upper vertical pipe 5 is inserted into the vertical pipe handle hole 15, the upper vertical pipe 5 is connected to the horizontal pipe 4b, and by rotating the vertical pipe rotation handle 14, the upper vertical pipe 5 and the lower vertical pipe 6 are rotated, allowing the direction of the nozzle pipe 7 to be changed in approximately 90° increments.

[0034] The spray nozzle 8 has an adjustable mounting angle on the nozzle pipe 7. This makes it easier to spray cleaning water onto the bridge girders to be cleaned.

[0035] Furthermore, the lower vertical pipe 6 is provided in multiple units, and multiple units can be connected to the upper vertical pipe 5 depending on the length to the bridge girder. Then, as described later, the wire 21 can be wound up by turning the winch handle 11 to move the lower vertical pipe 6 and the upper vertical pipe 5 up and down (see Figure 6). This up and down movement is further restricted by a stopper 24 provided on the upper vertical pipe 5.

[0036] The trolley 1 is equipped with a winch 10, around which a wire 21 is wound. The wire 21 extends via a wire roller 25 to a wire locking section 23 on the lower vertical pipe 6 and is locked there. When the winch handle 11 of the winch 10 on the trolley 1 is turned clockwise to wind the wire 21, the lower vertical pipe 6 and the upper vertical pipe 5 rise. When the winch handle 11 is turned further clockwise to wind the wire 21, the horizontal pipe 4b bends at approximately a right angle to the horizontal pipe 4a at the hinge 22. The bent portion between the horizontal pipes 4b and 4a is normally locked by a spring catch 17 to prevent bending, but when the pipes are retrieved onto the road U, the lock on the spring catch 17 is released.

[0037] Conversely, by turning the winch handle 11 counterclockwise, the horizontal pipe 4b, the upper vertical pipe 5, and the lower vertical pipe 6 can be extended under the bridge.

[0038] In Embodiment 1, the winch handle 11 was rotated clockwise to retrieve pipes 4, 5, 6, and 7 onto the bridge, and rotated counterclockwise to extend pipes 4, 5, 6, and 7 below the bridge. However, the configuration is not limited to this and can be modified as appropriate. For example, the winch handle 11 may be rotated counterclockwise to retrieve pipes 4, 5, 6, and 7 onto the bridge, and rotated clockwise to extend pipes 4, 5, 6, and 7 below the bridge.

[0039] The nozzle pipe 7 is equipped with multiple pipes of different lengths and is interchangeable with the lower vertical pipe 6.

[0040] A camera 16 is attached to the end of the lower vertical pipe 6 on the nozzle pipe 7 side, and the image of the girder captured by the camera 16 can be displayed on a monitor TV 20 installed on the trolley 1 on the bridge.

[0041] In Embodiment 1, the camera 16 was mounted near the end of the lower vertical pipe 6 on the nozzle pipe 7 side, but this is not necessarily the only configuration, and modifications can be made as appropriate. For example, the camera 16 may be mounted on the nozzle pipe 7.

[0042] The procedure for cleaning the girders beneath the bridge will be explained with reference to Figure 4. The spring catch 17 is locked to prevent the horizontal pipe 4b from bending at approximately a right angle to the horizontal pipe 4a at the hinge 22. A nozzle pipe 7 of the appropriate length is selected and attached to the lower vertical pipe 6. If multiple lower vertical pipes 6 are connected, the nozzle pipe 7 is attached to the lowest lower vertical pipe 6. At this time, consider where on the lower vertical pipe 6 the nozzle pipe 7 should be attached, from the front to the end. The angle of the spray nozzle 8 can also be adjusted relative to the nozzle pipe 7, so adjust it according to the site conditions.

[0043] Next, the vertical pipe rotation handle 14 is turned so that the spray nozzle 8 is directed towards the girder to be cleaned. Then, the winch handle 11 is turned in the direction that loosens the wire 21 to lower the lower vertical pipe 6 and upper vertical pipe 5 to the appropriate cleaning position. Whether the position is appropriate can be confirmed by looking at the image captured by the camera 16 on the bridge. In addition, the horizontal pipe 4a is slid to adjust the position as needed.

[0044] Now that the preparation for cleaning is complete, pump 3 is activated to spray cleaning water from nozzle 8 and clean the girders. The cleaning process is monitored by viewing images captured by camera 16 on monitor TV 20 on the road.

[0045] While spraying cleaning water from the spray nozzle 8 to clean the girder, the trolley 1 is slowly moved along the edge of the walkway to clean it. The trolley 1 can be easily moved while maintaining the distance between the spray nozzle 8 and the girder by pressing the caster rollers 19 against the edge of the bridge walkway.

[0046] Next, the procedure for retrieving pipes 4, 5, 6, and 7, which were extended under the bridge, onto the road will be explained with reference to Figures 5-8. First, the lock on the spring catch 17 is released (Figure 5).

[0047] Next, the winch handle 11 is turned clockwise to wind the wire 21. As a result, the lower vertical pipe 6 and the upper vertical pipe 5 rise (Figure 6). Further turning the winch handle 11 to wind the wire 21 causes the horizontal pipe 4b to begin bending at approximately a right angle relative to the horizontal pipe 4a at the hinge 22 (Figure 7).Continuing to turn the winch handle 11 clockwise to wind the wire 21, the horizontal pipe 4b bends at approximately a right angle relative to the horizontal pipe 4a at the hinge 22 (Figure 8).

[0048] All that remains is to turn the vertical pipe rotation handle 14 to change the orientation of the nozzle pipe 7 and return it to the state shown in Figure 1. This completes the retrieval onto the bridge U. In this way, by winding up the wire 21, which extends from the trolley 1 via the wire roller 25 to the wire locking part 23 on the lower vertical pipe 6 and is locked there, on the road, the lower vertical pipe 6 rises together with the upper vertical pipe 5, and when the stopper 24 on the upper vertical pipe 5 hits the handle part 26, the rising of the lower vertical pipe 6 and upper vertical pipe 5 stops. Then, the horizontal pipe 4b bends at approximately a right angle to the horizontal pipe 4a at the hinge 22, making it easy to retrieve pipes 4, 5, 6, and 7 from under the bridge to the bridge U.

[0049] In Embodiment 1, the horizontal pipe 4 and winch 10 are mounted on the trolley 1, but this configuration is not necessarily limited to this and can be modified as appropriate. For example, the horizontal pipe 4 and winch 10 may be mounted on a separate mobile body instead of the trolley 1 so that they can be moved, or the horizontal pipe 4 and winch 10 may be moved by a person.

[0050] Thus, in Example 1, a mobile trolley-type high-pressure washer for cleaning the girders under a bridge, A trolley capable of carrying at least a water tank and pump, which can be positioned on the bridge and moved, A cleaning hose capable of supplying cleaning water from the water tank through the pump to the vicinity of the girder below the bridge, A pipe capable of supporting the cleaning hose from the trolley on the bridge down to the bridge, A spray nozzle capable of spraying cleaning water from the aforementioned cleaning hose, A mobile trolley-type high-pressure washer, characterized by having a cleaning hose, allows for relatively easy cleaning of the girders beneath the bridge by supporting the cleaning hose, extending the pipe from the trolley on the bridge to below the bridge, and moving the trolley along the edge of the bridge. [Industrial applicability]

[0051] The mobile trolley-type high-pressure washer according to the present invention can be widely used in the field of cleaning bridge girders. [Explanation of Symbols]

[0052] 1: Dolly 2: Water tank 3: Pump 4(4a, 4b): Horizontal pipe 5: Upper vertical pipe 6: Lower vertical pipe 7: Nozzle pipe 8: Spray nozzle 9: Cleaning hose 10: Winch 11: Winch handle 12: Hose guide roller unit 13: Roller unit fixing lever 14: Vertical pipe rotating handle 15: Vertical pipe handle hole 16: Camera 17: Spring Catch 18: Hose hook 19: Caster Roller 20: Monitor TV 21: Wire 22: Hinge 23: Wire locking section 24: Stopper 25: Wire roller 26: Handle section 27 (27a, 27b, 27c, 27d): Pulley H: Digit U: On the bridge

Claims

1. A mobile trolley-type high-pressure washer for cleaning the girders beneath a bridge, A trolley capable of carrying at least a water tank and pump, which can be positioned on the bridge and moved, A cleaning hose capable of supplying cleaning water from the water tank through the pump to the vicinity of the girder below the bridge, A pipe capable of supporting the cleaning hose from the bridge to below the bridge, The system includes a spray nozzle capable of spraying cleaning water from the aforementioned cleaning hose, The pipe comprises a horizontal pipe extending from the trolley and capable of being bent at approximately a right angle, a vertical pipe connected to the end of the horizontal pipe opposite to the trolley and capable of being raised and lowered, and a wire extending from the trolley to the vertical pipe. A mobile trolley-type high-pressure washer characterized in that the vertical pipe rises and the horizontal pipe bends at approximately a right angle after the wire is wound up by a winch on the trolley.

2. The mobile trolley-type high-pressure washer according to claim 1, characterized in that the horizontal pipe is slidable relative to the trolley by a bearing-equipped pulley provided on the trolley.

3. The mobile trolley-type high-pressure washer according to claim 1, characterized in that the vertical pipe comprises an upper vertical pipe on the horizontal pipe side and a lower vertical pipe connectable to the upper vertical pipe.

4. A nozzle pipe having the injection nozzle is attached to the end of the lower vertical pipe opposite to the upper vertical pipe. The horizontal pipe has a handle portion at the end on the side of the upper vertical pipe, The upper and lower vertical pipes are rectangular pipes having a roughly square cross-section. The handle portion has a vertical pipe handle hole, which is a square hole into which the upper vertical pipe made of the square pipe is inserted and which is made immobile, and a vertical pipe rotating handle that can rotate the vertical pipe handle hole. The mobile trolley-type high-pressure washer according to claim 3, characterized in that the upper vertical pipe is inserted into the vertical pipe handle hole, thereby connecting the upper vertical pipe to the horizontal pipe, and the upper vertical pipe and the lower vertical pipe are rotated by rotating the vertical pipe rotation handle, thereby changing the direction of the nozzle pipe in approximately 90° increments.

5. The mobile trolley-type high-pressure washer according to claim 4, characterized in that the nozzle pipes are provided in multiple lengths and are interchangeable with respect to the vertical pipes.

6. The mobile trolley type high-pressure washer according to claim 4, further comprising a monitor TV capable of displaying images of the girder captured by a camera attached to the lower vertical pipe or the nozzle pipe on the bridge.

7. The mobile trolley-type high-pressure washer according to claim 1, characterized in that the trolley has caster rollers that can be pressed against the edge of a bridge.

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