JP3225398U - Vehicle mud remover - Google Patents

Abstract

An object of the present invention is to provide a mud removing device for efficiently removing mud attached to a vehicle with a simple structure. A mud dropping device for a vehicle for removing mud adhering to a vehicle, the device having a load plate (11) on which the vehicle can travel, wherein the load plate has a plurality of convex members (12) on a surface on which tires of the vehicle run. The load plate includes two support plates (support plates) that support the convex member and are spaced apart from each other, and are separated from each other by the two support plates. Both sides of the plurality of convex members are attached across the portion, and the plurality of convex members are arranged apart from each other in a longitudinal direction of the support plate, and the plurality of convex members are The plurality of convex members are arranged in parallel, and the intervals between the adjacent convex members are substantially equal, and the tire of the vehicle is mounted on the convex member in the space between the two support plates. . [Selection diagram] FIG.

Description

The present invention relates to a device for removing mud adhering to tires and a vehicle body of a vehicle such as a dump truck.

A large amount of mud adheres to the tires and vehicle bodies of large trucks (dump trucks, etc.) working in civil engineering works such as land development, residential land development, and harbor construction. When traveling on a paved general road or in the city with a large amount of mud adhered, the adhered mud falls on the road or the like or scatters dust to contaminate the road or the city. Therefore, it is necessary to remove the mud adhering before leaving the general road or the city from the civil engineering work site. For example, there has been proposed an apparatus for removing mud while rotating a roller in which a brush is implanted in contact with a wheel, and an apparatus for forcibly removing mud by injecting washing water to a tire with a nozzle. (Patent Document 1)

JP-A-2017-154616

The method of removing mud with a roller or brush requires a motor that rotates the roller, and the removal device is expensive and the size of the device is large. In addition, since the rollers and brushes are consumables, they need to be replaced periodically, which increases running costs. In addition, there is also a problem that the motor is overloaded and fails. Furthermore, since mud adheres to rollers, brushes, motors, and the like, cleaning is required as appropriate, and there is a problem that labor costs and maintenance costs increase. The device for injecting the washing water into the tire also becomes a major factor, and the price of the removing device is high and the device size is also large. A motor for injecting cleaning water to the nozzle is required, and periodic replacement of the nozzle and the motor is required. In the event of a failure, extra motors and nozzles are needed to keep the operation from being interrupted, further increasing costs. In addition, since electric power is required for driving a motor or the like, electric equipment must be provided. Further, since it is difficult to collect the washing water, a drainage facility is also required. These conventional mud-dropping devices are not only expensive and large in size, but also require considerable running costs, maintenance costs, and considerable costs for the work of car mud-down. In addition, since the conventional mud remover has only one entrance and one outlet, the vehicle from which mud has been removed by the mud remover needs to be backed out, so the next vehicle must wait at the entrance. Therefore, it takes a long time to clean the mud and the efficiency is low.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a vehicle in which a convex member is attached to a plate material (called a load plate) on which the vehicle rides so that the vehicle can be sludge when the vehicle passes over it. This is a mud dropping device, and specifically has the following features.
(1) The present invention is a device for removing mud adhering to a vehicle having a load plate on which the vehicle can travel, wherein the load plate has a plurality of convex members on a surface on which tires of the vehicle travel. Wherein the load plate includes two support plates (support plates) that support the convex member and are disposed separately from each other. The invention is characterized in that both sides of the plurality of convex members are attached across the separation portion, and the plurality of convex members are arranged apart from each other in a longitudinal direction of the support plate.
(2) In the present invention, in addition to (1), the plurality of convex members are arranged in parallel with each other, and the plurality of convex members have substantially equal intervals between adjacent convex members. A vehicle tire is characterized in that it is configured to be mounted on a convex member at a space between the two support plates.

(3) In the present invention, in addition to (1) or (2), two sets of the load plates are arranged in parallel, and one tire of a vehicle rides on the one load plate and the other load plate. The vehicle has a structure in which the other tire of the vehicle rides on a plate, the support plate is fixed to a gantry, and the load plate can be divided and attached or detached.
(4) In the present invention, in addition to (1) or (2) or (3), a portion between the convex member and the adjacent convex member at a lower portion of a portion of the load plate on which the vehicle tire rides. There is a space in which mud attached to the vehicle falls, and the convex member is a substantially right-angled isosceles triangular prism-shaped angle iron, and the bottom side of the angle iron is fixed by contacting the flat surface of the load plate. It is characterized by being.

The present invention has a simple structure in which a convex member is attached to a load plate on which a vehicle rides, but when a vehicle tire such as a dump truck passes over the convex member, an impact is applied to the vehicle, and the vehicle tires and the vehicle body are damaged. This is a mud removal device that removes mud adhering to the surface. Although it is a simple structure, the mud dropping effect is great just by passing over the convex member attached to the load plate, and after passing through the mud dropping device of the present invention, the mud adhering to the vehicle tires and vehicle body is almost It falls and does not pollute the city or general roads by scattering mud and dust even if it goes out to the city or road as it is. Further, since the vehicle travels on the road plate by itself and does not go back in one direction, the vehicle can proceed without waiting at the entrance, and the vehicle can be muddy in a short time. That is, the efficiency of sludge removal is good. Since there are no moving parts such as rollers and motors, there is almost no failure. There is a possibility that the convex member on which the vehicle directly rides may be damaged, but since the load plate can be divided, it is only necessary to replace the damaged part for damage such as breakage or bending. . Since the replacement is easy, if a spare divided load plate is prepared, the replacement can be performed in a short time, and the muddy vehicle does not have to wait. Since the cost of the split load plate is low and the size is not large, the cost of consumables is extremely small. Furthermore, the mud dropping device of the present invention has no complicated parts, is extremely inexpensive, and can be manufactured and installed in a very short time without using electric power or water. As described above, the mud dropping device of the present invention is inexpensive, and has the effects of extremely low running costs and maintenance costs.

FIG. 1 is a diagram showing a basic structure of the vehicle mud-dropping device of the present invention. FIG. 2 is a diagram showing a state of use of the mud-dropping device of the present invention. FIG. 3 is a diagram showing an example of a three-sided view (a plan view, a front view, and a side view) of the mud-dropping device of the present invention. FIG. 4 is a view showing an example of various shapes of the convex member used in the present invention.

The present invention relates to a (vehicle) mud removing device for removing mud adhering to a vehicle body or a tire of a vehicle such as a dump truck.
FIG. 1 is a diagram showing the basic structure of the vehicle mud dropping device of the present invention. A plurality of convex members 12 are fixedly arranged on a flat metal plate (referred to as a load plate or a mud drop fixing plate) on which a vehicle rides and on which a vehicle passes. Since the vehicle is mudded using the convex member 12, it is also referred to as a muddy portion or a muddy convex member. The basic structure of the present invention is only this, but a base A13 for mounting the basic structure 20 of the present invention may be additionally provided. The gantry A13 fixes and reinforces the basic structure 20, and also has the purpose of raising the basic structure 20 to create a mud-dropping space and storing mud that has fallen from the vehicle. The gantry A13 is long enough to drop most of the mud attached to the vehicle while passing over it.

Furthermore, a gantry B14 can be provided below the gantry A13 to support the gantry A13 to which the basic structure 20 is attached. The gantry A13 is long in the traveling direction of the vehicle, but the gantry B14 has a length approximately equal to the width of the vehicle body, intersects the gantry A13 at right angles, and is spaced apart in the length direction of the gantry A13. Be placed. The gantry B14 is usually installed on the ground, but if the height of the ground at the portion where the gantry 14 contacts the ground is uniform, the height of the gantry A13 and the load plate 11 can be constant (that is, parallel to the ground). it can. The gantry A13 can be placed directly on the ground without providing the gantry A14. However, since the ground area of the gantry A13 is large and the ground on which the entire gantry A13 is grounded is not necessarily flat, the unevenness of the ground remains unchanged. Reflected on the gantry A13, an excessive load is applied to the gantry A13, which may damage the gantry A13. The gantry B14 also has the purpose of preventing such damage to the gantry A13.

The length of the gantry B14 (the depth side in FIG. 1) is about the width of the vehicle, and the length of the gantry A13 is usually equal to or longer than one vehicle, so that it is shorter than the length of the gantry A13. Since the width (the front side in FIG. 1) of the gantry B14 is not large, it is easy to make the ground on which the gantry B14 comes into contact with the ground flat. Therefore, the load applied to the gantry B14 is small and the gantry B14 is hardly damaged. Further, by disposing the gantry B14, since the entire area is further raised and the mud dropping space for storing the mud dropped from the vehicle is increased, the frequency of the operation for removing the stored mud can also be reduced. Since the gantry A13 and the gantry B14 support a large vehicle such as a dump truck, a considerable strength is required. Therefore, the material thereof is preferably made of steel.

FIG. 2 is a diagram showing a state of use of the mud-dropping device of the present invention. It shows how a vehicle such as a dump truck performs mud removal through the mud remover of the present invention. In order to emphasize the state of mud dropping, the convex member 12 is drawn large. The mud dropping device 30 is placed on the ground 18 at a construction site or the like, and a thin plate material 17 such as an iron plate or a steel plate may be arranged between them. The thickness of the plate 17 is preferably about 0.5 cm to 10 cm. The pedestal B14 of the mud dropping device 30 is in direct contact with the ground 18 and the plate 17. Since the mud removing device 30 has a step with the ground as it is, a slope (entrance slope) 15 is arranged on the entry side of the mud removing device 30 so that the vehicle can easily get on the mud removing device 30. Also, the exit ramp 16 is arranged so that the vehicle can easily get off the mud dropping device 30. The material of the slope is also an iron material, a steel material, or the like (in some cases, may be wood), and the inclination angle is preferably set to an angle at which the vehicle can easily go up and down. For example, it is 5 degrees to 30 degrees. When the step is small and the vehicle can climb on the mud dropping device 30 by itself, the slope may not be provided.

The vehicle 19 first climbs up the entry slope 15 (indicated by the vehicle 19-1) and enters the road plate 11. The vehicle 19 advances on the load plate 11 (indicated by the vehicle 19-2), passes through the load plate 11, descends the slope 16 (the exit slope) (indicated by the vehicle 19-3), and exits on the ground. . Since a plurality of convex members 12 are arranged on the load plate 11, the tire of the vehicle 19 (19-2) repeatedly goes up and down the convex members 12. The height of the convex member 12 is about 1% to 20% of the tire diameter, and the width of the convex member 12 (the width of contact with the load plate 11 in FIG. 1 or FIG. 2). Is also about 1% to 20% of the tire diameter, and the distance between the convex member 12 and the adjacent convex member 12 (the distance between the apex angles) is relative to the tire diameter. Since it is about 30% to 300%, a certain degree of impact is applied to the vehicle when the tire of the vehicle descends from the convex member 12. Due to this impact, mud adhering to the vehicle body and tires of the vehicle falls off the vehicle.

Since a large number of convex members are arranged on the load plate 11, even if mud is firmly adhered to the vehicle, the mud may be loosened to some extent by the first impact, and may be caused by steps of the plurality of subsequent convex members. Due to the repeated impact, mud that has adhered to the vehicle almost drops before the vehicle 19 (19-2) gets off the exit-side slope 16. The mud that has fallen from the vehicle falls into the space between the convex members 12 on the load plate 11 and the space between the load plates 11 arranged in the width direction. The mud that has fallen into those spaces accumulates and must be removed before reaching the height of the load plate 11.

The convex member 12 is preferably formed in a substantially triangular prism shape having a substantially triangular cross section (long in the depth direction in FIGS. 1 and 2). In particular, angle irons with a right angle (also called angled or L-shaped bars) are made of steel, are robust and easy to manufacture, and can be mass-produced. Can be. The convex member 12 is more easily fixed with the load plate 11 in the target shape on the left and right (in FIGS. 1 and 2) with respect to the vertex. For example, in the case of angle iron, a substantially right-angled isosceles triangle shape is preferable. When angle iron is used, since the apex is angular (sharp), when the tire passes through the apex, mud adhering to the tire is easily peeled off. Note that the angle of the angle iron can be appropriately changed according to the degree of dropping mud.

FIG. 3 is a diagram showing an example of a three-sided view (a plan view, a front view, and a side view) of the mud-dropping device of the present invention. 3A is a plan view (top view), FIG. 3B is a front view (elevation view), and FIG. 3C is a side view. As shown in FIG. 3A, the load plate 11 is a long plate that is long in the lateral direction (the traveling direction of the vehicle). The load plate 11 includes two long plates 11-1 and 11-2. The long plates 11-1 and 11-2 are arranged in parallel at a separation distance (interval) W2, and the convex member 12 is attached and fixed over the separation distance W2. Since the long plates 11-1 and 11-2 support the convex member 12, they are called support plates (or support plates). The material of the support plate 11 and the convex member 12 is a metal such as an iron plate or steel, and these are joined and fixed by welding or bolts.

The protruding member 12 is, for example, as shown in FIG. 3B, an angle steel having a substantially triangular prism having a substantially right triangle in cross section. Since the symmetrical shape has good stability, both sides preferably have substantially the same length. That is, the convex member 12 is preferably an angled steel having a substantially isosceles right triangle shape. The end faces of both sides of the angle iron are fixed to the support plate 11 (11-1, 11-2) by welding or bolting. The angle iron (top line) is fixed to the support plate 11 at a substantially right angle. The plurality of convex members 12 are arranged side by side and fixed to the support plate 11. The separation distance (interval) L1 of the convex member 12 may be changed, but it is preferable to keep L1 constant in order to give the same degree of impact to the vehicle, and it is easy to manufacture and arrange, and workability is good.

The two support plates 11 (11-1 and 11-2) to which the plurality of convex members 12 are attached are load plates 11 (11A) for one tire of the vehicle. The load plate 11 (referred to as 11B) on which the other tire of the vehicle is mounted also includes two support plates 11 (11-3, 4), and like the load plate 11-A, the support plates 11-3 and 11-. 4 is attached and fixed to both ends of the convex member 12. The distance between the convex members 12 of the load plate 11B is preferably the same distance L1 as the load plate 11A. If these distances are different, the way to go up and down will be different for the left and right tires, so the impact will be small and the way mud will fall will be weak. Also, the tire may come off. If the width of the support plate 11 is W1 and the separation distance (interval) between the support plates is W2, both ends of the convex member 12 are fixed to the support plate 11 (for example, with bolts or the like). The length of the shape member 12 is approximately (2 × W1 + W2).

The front view of FIG. 3B is a view similar to FIGS. 1 and 2. The convex members 12 are mounted on the upper surface of the load plate (support plate) 11 at an interval L1 (distance between vertices of adjacent convex members). The load plate (support plate) 11 is attached and fixed to the gantry A13. The gantry A13 is approximately the same length as the load plate (support plate) 11, has the same width W1 as the support plate 11 (11-1 to 4), and supports the entire load plate (support plate) 11. . The tire of the vehicle travels on a convex member 12 arranged on a load plate (support plate) 11. (For example, from left to right in FIG. 3) A plurality of gantry B14 supporting the gantry A13 are arranged in a direction perpendicular to the gantry A13. It is preferable that the width of the gantry B134 is small as long as the gantry B134 can support the weight of the gantry A13 or the like on which the vehicle is mounted. This is because the lower space of the load plate (support plate) 11 is made as large as possible so that mud falling from the vehicle can be easily stored and removed. As can be seen from the side view of FIG. 3C, the gantry B14 fixedly supports (the gantry A of) two sets of load plates (11-A and 11-B). That is, the length of the gantry B14 is substantially equal to the width of the vehicle body.

FIG. 3 (c) is a side view of the mud dropping device of the present invention, which is drawn so that the relationship with the tires of the vehicle can be understood. The convex member 12 is arranged and fixed across two support plates 11 (11-1 and 2 or 11-3 and 4) and a gantry A13 to which the support plates 11 are fixed. The tire 21 of the vehicle does not ride on the support plate 11 (11-1 and 2 or 11-3 and 4), and does not ride on the two support plates 11 (11-1 and 2 or 11-3 and 4). Ride on a portion where the support plate 11 (11-1 and 2 or 11-3 and 4) does not exist on the convex member 12 which is supported and fixed on the base member. That is, the space S (S1, S2) exists below the tire 21 of the vehicle. A region passing through the tire 21 of the vehicle is indicated by a region Z (FIG. 3A). Since the tire 21 of the vehicle passes over the convex member 12 straddling between the support plates 11 (11-1 and 2 or 11-3 and 4), mud adhering to the tire 21 is rubbed by the convex member 12. The shaped member 12 is taken and falls into the space S (S1, S2). In addition, mud that is peeled off from the tire due to the impact when the tire 21 descends from the convex member 12 also falls into the space S (S1, S2). In addition, the mud attached to the vehicle body (particularly the inside) of the vehicle is also peeled off by the impact, and falls into the space S (S1, S2) and the space S (S3) between the load plates 11-A and 11-B.

FIG. 3A shows a portion (region) where the tire of the vehicle rides by a broken line Z. It can be seen that the region D does not extend over the support plate 11. That is, the tire of the vehicle rides only on the convex member 12, and when the vehicle goes down, a part of the tire enters between the convex members. The Z region covers the entire longitudinal direction of the load plate 11, and the tire of the vehicle passes through this region. Naturally, there is an interval (between adjacent convex members) such that the entire tire does not enter between the convex members 12. Accordingly, since the tire is lowered above the height of the convex member 12, the impact is relatively large, and the extent to which the mud falls is also large. Some fall on the support plate 11 (11-1, 2, 3, 4) or the convex member 12, but can also be visually checked, and when it becomes difficult to remove the mud by accumulation, a space S (e.g., a broom) is used. (S1, S2, S3). Alternatively, a blower or shower for blowing off mud may be attached. Since the support plate 12 also receives the force applied to the convex member, its material is preferably made of iron or steel.

Since a vehicle such as a dump truck rides on the convex member 12, a sturdy member such as steel is used as the convex member 12, but the convex member 12 is damaged or bent by a large number of vehicles, The bolted joint may be damaged and a part of the convex member 12 may come off the load plate 11. In the case where the entire load plate 11 is integrated with one piece, it is necessary to replace the entire load plate 11 even if it is partially damaged. Therefore, since the load plate 11 is divided and manufactured, and the divided load plate (with a convex member) is fixed to the gantry A13 with bolts or the like, only the damaged portion may be replaced. In addition, the workability can be improved and the cost can be reduced.

1 shows an example of the size of the mud-dropping device of the present invention. The overall length of the load plate (support plate) is 10000 mm, the width W1 of the support plate is 300 mm, the interval W2 between the two support plates is 400 mm, the interval W3 between the two sets of load plates is 1000 mm, and the length of the gantry 1 is load. It is almost the same as the entire length of the plate (support plate). The width of the gantry 1 is substantially the same as the width W1 of the support plate. The width W5 of the gantry 2 is 300 mm, the length is 3000 mm, the width W4 of the convex member is 150 mm, the height T1 is 75 mm, and the angle is a right angle. The thickness T2 of the load plate (support plate) is 9 mm. The thickness of the gantry 1 is 300 mm. The thickness T4 of the gantry 2 is 300 mm. The maximum tire interval (interval between the outer sides of both tires) of the vehicle riding this mud-dropping device is 2 × (W1 + W2) + W3 = 2400 mm, and the minimum of the tire interval (interval between the outer sides of both inner tires) of the vehicle is 2 × W1 + W3 = 1600 mm. When a tire is placed on the support plate portion, the maximum tire spacing (the distance between the outsides of both tires) of the vehicle is 4 × W1 + 2 × W2 + W3 = 3000 mm. The minimum is W3 = 1000 mm. The thickness of the angle iron is 10 mm. When the load plate is divided, for example, in the case of the above-mentioned size, if the load plate is divided every 1000 mm, the entire load plate is constituted by ten divided load plates (with a convex member). Each divided load plate is fixed to the gantry A by, for example, bolts. If one of the divided load plates is damaged, only the divided load plate is removed, and a new spare divided load plate is fixed to the gantry A by bolts. It should be noted that the values shown above are merely examples, and it is needless to say that the values can be appropriately changed according to the size of the vehicle.

FIG. 4 is a view showing various shapes of the convex member used in the present invention. The shape of the convex member shows a cross-sectional structure, but the actual shape is a columnar shape extending to the back of the paper. FIG. 4A shows the angle iron shown so far, and the bottom side is open. The apex angle is 90 °, but can be appropriately changed according to the mud dropping condition. The end faces of both sides can be fixed to the support plate by welding, or the both sides and the support plate can be fixed with bolts or the like. FIG. 4B has a triangular shape with a space inside. Since the bottom exists, the entire bottom can be fixed to the support plate by welding or bolts. FIG. 4C shows a triangular shape with no space inside. Since this also has a bottom, the entire bottom can be fixed to the support plate by welding or bolts. FIG. 4D shows a rectangular shape (including a square shape). Since this also has a bottom, the entire bottom can be fixed to the support plate by welding or bolts. If the corners are sharp, they are liable to be worn or damaged. Therefore, rounded corners can be used. The shape shown in FIG. 4 is an example, and other shapes can be used as appropriate.

Note that a rectangular shape having no base as shown in FIG. 4A and a rectangular shape having a space inside as shown in FIG. 4B can be used. FIG. 4E shows a radial shape, and FIG. 4F shows a trapezoidal shape. Similarly, the entire bottom can be fixed to the support plate by welding or bolts, and a shape without a bottom or a shape with a space inside can also be used. Other shapes can also be used, and can be changed as appropriate according to the state of mud dropping. Further, those having these shapes can also be used for the support base and the load plate itself. Alternatively, after the entire load plate 11A is formed as a single plate and the convex member is attached, in a region where the tire passes and the tire passes (such as a Z region in FIG. 3A), the adjacent convex member It is also possible to use one in which a space is made by hollowing out a plate between them. In addition, a shape in which a pedestal plate or a helical member is attached to the bottom (bottom) side of these shapes can also be used for the convex member of the present invention. In this case, the bottom (bottom) side becomes wider, so that welding or It becomes easy to attach and fix to the support plate with bolts or the like.

The mud-dropping device for a vehicle according to the present invention has a large number of convex members arranged on a load plate, and removes mud adhering to the vehicle while the vehicle of a dump truck or the like runs on the convex member and travels on its own. This is a dropping device that can drop mud efficiently with a simple structure. It is needless to say that the contents described and described in one part of the specification can be applied to other parts not described without contradiction, and the contents can be applied to the other part. Further, the embodiment is merely an example, and various modifications can be made without departing from the scope of the invention. Needless to say, the scope of rights of the present invention is not limited to the embodiment.

The mud dropping device of the present invention can be used for vehicles other than dump trucks, for example, small to large trucks, buses, ordinary passenger cars, two-wheeled vehicles, and the like, or caterpillar type vehicles. In addition, since it is a simple device, it can be installed not only at a construction site but also at a place where mud tends to adhere, and can be applied to various vehicles.

11 ... load plate or support plate, 12 ... convex member,
13 ... stand A, 14 ... stand B, 15 ... riding slope,
16: Get-off slope, 17: Plate material, 18: Ground, 19: Vehicle, 20: Basic structure, 21: Tire, 22: Axle, 30 ... Mud removal device

Claims (10)

A mud removing device for a vehicle for removing mud adhering to a vehicle, the device having a load plate on which the vehicle can travel, wherein the load plate has a plurality of convex members on a surface on which tires of the vehicle travel. Mud removal device.
The load plate includes two support plates that support the convex member and are spaced apart from each other, and both sides of the plurality of convex members are attached to the two support plates across a separation portion. The mud removing apparatus according to claim 1, wherein the plurality of convex members have a structure arranged apart from each other in a longitudinal direction of the support plate.
3. The mud dropping device according to claim 1, wherein the plurality of convex members have a structure arranged in parallel with each other. 4.
The mud-dropper according to any one of claims 1 to 3, wherein the plurality of convex members have substantially equal intervals between adjacent convex members.
The mud dropping device according to any one of claims 2 to 4, wherein a tire of the vehicle is configured to be mounted on a convex member at a space between the two support plates.
Two sets of the load plates are arranged in parallel, and one of the tires of the vehicle rides on the one load plate, and the other tire of the vehicle rides on the other load plate. Item 7. The mud remover according to any one of Items 1 to 5.
The mud dropping device according to any one of claims 2 to 6, wherein the support plate has a structure fixed to a gantry.
The said load plate is a structure which can be divided and attached or detached, The mud spill device as described in any one of Claims 1-7 characterized by the above-mentioned.
A space in which mud attached to the vehicle falls from between the convex member and an adjacent convex member at a lower portion of a portion of the load plate on which the vehicle tire rides, wherein: Item 8. The mud removing apparatus according to any one of items 8.
The said convex-shaped member is angle iron of a substantially right angle isosceles triangular prism shape, The bottom surface side of the said angle iron is contact | abutted and fixed to the flat surface of the said load plate, The any one of Claims 1-9 characterized by the above-mentioned. The mud removing device according to the item.