A shovel-shaped hand tool specifically designed for peeling.

Abstract

This hand tool, shaped like a shovel, is specifically designed for "peeling off" relatively soft materials such as soil, powder, and feed that have adhered to floor surfaces. It minimizes the movement of the adhered material, allows for quick and easy removal of a wide area with relatively little force, and efficiently removes relatively soft materials that have adhered widely to dump truck beds, floors of various facilities, etc., using only a linear pushing motion by hand, without compromising safety. [Solution] The shovel does not have a dish-shaped section for holding soil, but instead has a hollow tip and handle consisting only of an outline. The outline is formed into a frame shape with a tip blade, left and right side sections, and a rear section, with the inside open as a hollow section. A straight cutting edge is provided on the lower surface of the tip blade and the upper outer edge of the front half of the side sections. This configuration allows for efficient removal of attached material K from the floor surface F by only a linear pushing motion by hand, and the removed material can be sequentially discharged to the back of the tip through the hollow section. Conventional shovels require repeated scraping of attached material accumulated in the dish-shaped section, and scraping rods have a narrow effective width, making it time-consuming to treat large areas. This makes it difficult to efficiently "peel" material from the floor surface, resulting in decreased work efficiency and increased burden on workers.

Description

Technical Field

[0001] The present invention relates to a scoop-shaped hand tool specialized only for scraping, and particularly to a scoop-shaped hand tool for peeling work for efficiently peeling relatively soft adherents such as earth and sand, powder, feed, etc. adhering to the loading bed surface of a dump truck or the floor surface of various facilities by manpower.

Background Art

[0002] Conventionally, for the work of removing relatively soft adherents such as earth and sand, powder, feed, etc. adhering to the loading bed surface of a dump truck or the floor surface of various facilities, general scoops, kelon bars, spatula-shaped tools, etc. have been used. However, since a general scoop mainly aims to place the adherents scraped at the tip on the dish-shaped part and transport them, in the case of peeling adherents widely adhering to the floor surface, the adherents scraped at the tip tend to accumulate in the dish-shaped part, and it is necessary to scrape the adherents to the side many times during the work. As a result, there is a problem that the moving amount of the adherents increases, the work efficiency decreases, and the burden on the operator also increases.

[0003] Also, although kelon bars and spatula-shaped tools have blades at the tip and can peel adherents along the floor surface, the tool width is relatively narrow, and when adherents adhere over a wide area, it is necessary to rub and scrape the same place separately many times, which requires a long time of work. Furthermore, many of these tools have short handles, and when dealing with a wide range such as the loading bed surface of a dump truck, a mid-waist posture is forced, and there is a problem that the physical burden on the operator is large.

[0004] On the other hand, after discharging the loaded goods from the loading bed of a dump truck, earth and sand, powder, feed, etc. often remain thinly adhering to the loading bed surface. If this residue is left as it is, it may be mixed into the loaded goods in subsequent times and damage the quality, or may cause corruption and bad odor. Therefore, it is necessary to regularly clean the loading bed surface, but with the conventional tools as described above, it is difficult to efficiently peel relatively soft adherents adhering over a wide area in a short time. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] Jousei General Catalog, Workers, Material Handling Labor-Saving Equipment, Machinery and Tools, P219 https: / / jousei.jp / catalog_new / html5m.html#page=221 This is a conventional, general-purpose shovel. [Non-Patent Document 2] Jousei General Catalog, Workers, Cargo Handling Labor-Saving Equipment, Machinery and Tools, P221 https: / / jousei.jp / catalog_new / html5m.html#page=223 This is a conventional, general-purpose scraping rod. [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] This invention was made in view of the problems of the prior art described above, and aims to provide a shovel-shaped hand tool that targets relatively soft materials such as soil, powder, and feed adhering to floor surfaces, and is not intended to transport the materials over long distances, but is solely for the purpose of "peeling" the materials off the floor surface, minimizing the amount of material moved, and enabling peeling work over a wide area in a short time with relatively little force.

[0007] Furthermore, this invention aims to provide a hand tool that can efficiently remove relatively soft deposits widely adhering to the floor surfaces of dump truck beds and various facilities, etc., without compromising safety, simply by using a linear pushing motion by hand. This is achieved by configuring the tip as a hollow frame consisting only of the surrounding contour, providing an upper blade at the front edge of the tip that is pressed into the boundary with the floor surface, providing cutting edges on the outer upper edges of a portion of the side parts extending on both sides of the tip, and further omitting a blade from the rear part that the worker steps on with their feet. [Means for solving the problem]

[0008] To solve the above problems, the "shovel-shaped hand tool specialized solely for peeling" according to the present invention does not have a dish-shaped part for holding soil and sand, but has a hollow tip consisting only of a surrounding contour. This contour is formed in a frame shape by a tip blade made of a highly rigid plate-shaped metal material, a pair of left and right side parts extending substantially linearly to the rear from both ends of the tip blade, and a rear part connecting the rear ends of these side parts, and the inside enclosed by these is open as a hollow part.

[0009] On the upper side of the tip blade, a straight cutting edge is formed to scrape off the deposit when pressed against the boundary between the floor surface and the deposit. This allows the operator to continuously peel off the leading edge of the deposit along the floor surface simply by pushing the handle straight forward and downward. On the other hand, on the left and right side sections, the upper outer edge of the front half portion continuous with the tip blade has a straight cutting edge that extends from both ends of the tip blade toward the rear, while the rear half portion and the rear surface of the side section do not have a cutting edge. As a result, the cutting edge formed on the outer upper edge of the front half of the side section contacts and breaks up deposits lifted by the tip blade and deposits protruding outward in the width direction of the tool, guiding them into the cavity, while safety is ensured when stepping on the tool because there is no blade on or near the rear surface where the operator places their foot.

[0010] Furthermore, by creating a hollow space within the contour of the tip, the deposits detached from the floor surface by the tip blade and the cutting edges of the side blades are sequentially discharged through this cavity to the back of the tip. As a result, the detached deposits are less likely to accumulate in front of the tip, and the operator can continuously detach deposits located further back simply by pushing the tool straight forward along the floor surface, enabling efficient processing of a wide area while minimizing the movement of the deposits. Regarding the material of the contour, steel plate is used when high rigidity and wear resistance are required, such as for removing soil and sand attached to the floor of a dump truck. On the other hand, for applications processing relatively lightweight deposits such as powders and feed attached to the floor surface over a wide area, the contour is made to have a larger outer dimension and uses a lightweight metal such as aluminum, which allows for an increase in the width of the tip while keeping the overall weight of the tool down. With this configuration, unlike conventional shovels designed to transport attached materials over long distances, the hand tool of this invention is specialized solely for "removing" relatively soft soil, powder, feed, etc., attached to the floor surface, enabling efficient detachment. It also makes it possible to process large areas of attached material, which was difficult with conventional tools, in a short time using only a simple, linear pushing motion by hand. [Effects of the Invention]

[0011] According to this invention, the tip is constructed as a hollow frame consisting only of the surrounding contour, and an upper blade is provided at its front edge that is pressed into the boundary between the floor surface and the attached material. Furthermore, a cutting edge is provided only on the upper outer edge of the tip side of the left and right side portions, and no cutting edge is provided on the rear portion or its vicinity. This configuration provides the following effects.

[0012] In other words, by simply pushing the handle forward and downward in a straight line, the cutting edge on the upper surface of the tip blade bites into the boundary between the floor surface and the deposits, scraping off the deposits over a wide area. At the same time, the cutting edge formed on the upper outer edge of the front half of the side cuts away the sides and top surfaces of the deposits protruding outward in the width direction of the tool, guiding them into the cavity, thus efficiently removing deposits from the floor surface. Furthermore, the removed deposits are sequentially discharged to the back of the tip through the cavity surrounded by the contour, so deposits do not easily accumulate in front of the tip. This eliminates the need for unnecessary work such as peeling off deposits and moving them to the side, allowing for continuous removal of deposits located further inside with only a simple straight pushing motion.

[0013] Furthermore, by not providing a cutting edge on the rear section and the rear half of the side section continuous therewith, and by making the edge an obtuse angle or chamfered shape, the risk of the worker touching the cutting edge when placing their foot on it is reduced, ensuring a highly safe stepping assistance function. In addition, by making it possible to select materials such as steel plate or aluminum for the contour section, it is possible to create specifications according to the type of material attached and the working environment, from a high-rigidity type for soil and sand attached to the bed of a dump truck to a large, lightweight type for light powders and feed. As a result, the hand tool of this invention can perform peeling work over a wide area in a short time with relatively little force while minimizing the amount of material moved, greatly contributing to improved work efficiency and reduced burden on the worker. [Brief explanation of the drawing]

[0014] [Figure 1] Figure 1 is a side view showing the "shovel-shaped hand tool 1 specialized solely for peeling" according to the present invention being used to peel off a substance K adhering to a floor surface F. [Modes for carrying out the invention]

[0015] The "shovel-shaped hand tool 1 specialized solely for peeling" according to this invention is a hand tool for manually peeling off relatively soft adhering materials K such as soil, powder, and feed that are attached to a floor surface F, and consists of a tip portion 2 and a handle portion 3 connected to the tip portion 2. The tip portion 2 does not have a dish-shaped portion for holding soil, which is found in a typical shovel, and is formed as a hollow frame consisting only of a surrounding outline portion 4.

[0016] The contour portion 4 is made of a plate-shaped metal material with high rigidity and is constructed in a frame shape by a tip blade portion 5 located on the floor surface F side, a pair of left and right side portions 4b and 4c extending substantially linearly to the rear from both ends of the tip blade portion 5, and a rear portion 6 connecting the rear ends of these side portions 4b and 4c, with the interior enclosed by these portions opening up as a cavity portion 8.

[0017] The tip blade portion 5 is a straight plate member facing the boundary between the floor surface F and the attached material K, and a straight cutting edge 5a is formed on its upper surface. The cutting edge 5a is machined as a cutting edge having a predetermined cutting angle toward the floor surface F, and when pressed into the boundary between the floor surface F and the attached material K during operation, it can peel off the attached material K by scraping it from the floor surface F.

[0018] The left and right side portions 4b and 4c are elongated plate members that extend in a substantially straight line toward the rear from both ends of the tip blade portion 5. Of these, the upper outer edge of the front half portion continuous with the tip blade portion 5 has a straight cutting edge 4d that extends toward the rear from both ends of the tip blade portion 5. In other words, the cutting edge 4d as a side blade portion is provided along a predetermined length section of the outer circumferential ridge that is above and outside the frame of each side portion 4b and 4c, from the tip blade portion 5 side. On the other hand, the rear half portion of each side portion 4b and 4c that is close to the rear surface portion 6 does not have a cutting edge.

[0019] The rear portion 6 is a horizontally long plate member that connects the rear ends of the left and right side portions 4b and 4c, and functions as a stepping-in portion for an operator to step on with the foot. The upper surface of the rear portion 6 is formed to be substantially flat so that the operator can stably place the foot thereon, and the peripheral edge portion thereof is chamfered or has an obtuse angle shape, and no edge grinding is performed. Also, for the latter half portions of the side portions 4b and 4c continuous with the rear portion 6, no cutting edge is provided, and by making the edge portion have an obtuse angle shape, safety during work is ensured.

[0020] As the material of the contour portion 4, when mainly targeting earth and sand adhering to the loading platform floor surface of a dump truck, a configuration using a steel plate material having high rigidity and wear resistance is suitable. On the other hand, for applications where relatively lightweight deposits K such as powder and feed adhering to the floor surface are treated over a large area, while making the outer dimensions of the tip portion 2 slightly larger, by using a lightweight metal such as an aluminum material as the material of the contour portion 4, a configuration can be adopted that suppresses an increase in the weight of the entire tool while expanding the width of the tip portion 2. The handle portion 3 is composed of an elongated rod-shaped member made of wood or a metal pipe, similar to a general scoop, and has a length that allows the operator to hold and operate it with both hands.

[0021] One end of the handle portion 3 is inserted into a mounting portion 7 provided on the back side of the tip portion 2, and is fixed by pinning, bolting, welding, or the like. The mounting portion 7 is provided at a position corresponding to the base portion of the handle in a so-called ordinary scoop, and is arranged such that the axis of the handle portion 3 passes near the approximate center of the tip cutting edge portion 5. For this reason, the operator can hold the handle portion 3 in the same sense as a general scoop and perform an operation of pushing the entire tool 1 forward.

[0022] Next, the usage method and operation of the hand tool 1 of the present invention will be described. The operator holds the handle portion 3 with both hands and aligns the tip blade portion 5 with the boundary between the floor surface F and the adherent K. Then, while pushing the handle portion 3 linearly forward and downward, and stepping on the rear portion 6 with one foot as necessary, the upper blade edge 5a of the tip blade portion 5 is made to bite into the boundary portion. At this time, the blade edge 5a enters between the floor surface F and the adherent K, and the front edge of the adherent K is scraped off and peeled from the floor surface F. A part of the adherent K lifted by the tip blade portion 5 comes into contact with the blade edges 4d formed on the front half portions of the left and right side portions 4b, 4c. Since these blade edges 4d are located on the outer edges of the upper sides of the side portions 4b, 4c, in the process of pushing the tool 1 forward, they abut against the side surface or the upper surface of the adherent K that protrudes outward in the tool width direction, and act to guide it into the cavity portion 8 while breaking it down with the protruding ridge line on the outside. On the other hand, since there are no blades on the rear portion 6 where the operator places the foot and the rear half portions of the side portions 4b, 4c continuous thereto, the risk that the operator touches the blade edge during stepping or handling is reduced. The peeled adherent K is sequentially discharged to the back side of the tip portion 2 through the cavity portion 8 surrounded by the contour portion 4. Since the tip portion 2 has no dish-shaped portion and is hollow, it is difficult for the adherent K to stay in front of the tip portion 2, and the operator can continuously peel the adherent K existing on the back side by simply pushing the tool 1 linearly forward along the floor surface F. As a result, it is possible to perform a wide-range peeling operation in a short time with a relatively light force while minimizing the movement amount of the adherent.

[0023] Note that the hand tool 1 of the present invention is intended for adherents K such as relatively soft earth and sand, powder, feed, etc., and is not necessarily suitable for removing adherents that are extremely hard and firmly adhered like mortar or concrete. However, in the operation of removing a large amount of adherents on the loading floor surface of a dump truck or the floor surface of agricultural, livestock, and food-related facilities, etc., it is effective in improving work efficiency and reducing the burden on the operator.

Example

[0024] One embodiment of the present invention, a "shovel-shaped hand tool specialized solely for peeling" 1, is a hand tool for manually peeling off relatively soft adhering materials K such as soil, powder, and animal feed that have adhered to the floor surface F of dump truck beds and various facilities, and consists of a tip portion 2 and a handle portion 3 connected to the tip portion 2.

[0025] The tip portion 2 does not have a dish-shaped part for holding soil or sand, as is typical of a shovel, and is formed as a hollow frame consisting only of a surrounding contour portion 4. The contour portion 4 is constructed in a frame shape by a tip blade portion 5 located on the floor surface F side, a pair of left and right side portions 4b and 4c extending substantially linearly to the rear from both ends of the tip blade portion 5, and a rear portion 6 connecting the rear ends of these side portions 4b and 4c, with the interior enclosed by these portions opening up as a hollow portion 8.

[0026] The tip blade portion 5 is a straight plate member facing the boundary between the floor surface F and the attached material K, and a straight cutting edge 5a is formed on its upper surface. The cutting edge 5a is machined as a cutting edge having a predetermined cutting angle toward the floor surface F, and when pressed into the boundary between the floor surface F and the attached material K during operation, it can peel off the attached material K by scraping it from the floor surface F.

[0027] The left and right side portions 4b and 4c are elongated plate members that extend in a substantially straight line toward the rear from both ends of the tip blade portion 5. Of these, the upper outer edge of the front half portion continuous with the tip blade portion 5 has a straight cutting edge 4d that extends toward the rear from both ends of the tip blade portion 5. In other words, the cutting edge 4d as a side blade portion is provided along a predetermined length section of the outer circumferential ridge that is above and outside the frame of each side portion 4b and 4c, from the tip blade portion 5 side. On the other hand, the rear half portion of each side portion 4b and 4c that is close to the rear surface portion 6 does not have a cutting edge.

[0028] The rear section 6 is a horizontally elongated plate member that connects the rear ends of the left and right side sections 4b and 4c, and also functions as a footrest for the worker to step on. The upper surface of the rear section 6 is formed to be approximately flat so that the worker can place their foot stably on it, and its peripheral edges are chamfered or have an obtuse angle shape, and are not sharpened. Similarly, the rear portions of the side sections 4b and 4c that are continuous with the rear section 6 also do not have cutting edges, and the edges have an obtuse angle shape to ensure safety when stepping on it or handling it.

[0029] In this embodiment, the material used for the contour portion 4 is steel plate, which has high rigidity and wear resistance, as it is primarily intended for processing soil and sand adhering to the floor of a dump truck. On the other hand, when applying this tool to process relatively lightweight adhering materials K, such as powder or animal feed, over a wide area, the outer dimensions of the tip portion 2 may be made slightly larger, and the material may be a lightweight metal such as aluminum. This allows for an increased processing width at once while keeping the overall weight of the tool down and reducing the burden on the operator.

[0030] The handle 3, like that of a typical shovel, is made of a long, slender rod-shaped member made of wood or metal pipe, and is long enough for the operator to grip and operate with both hands. One end of the handle 3 is inserted into a mounting part 7 provided on the back side of the tip 2 and fixed by pinning, bolting, or welding. The mounting part 7 is located at a position corresponding to the base of the handle of a normal shovel, and the axis of the handle 3 is positioned so that it passes approximately through the center of the tip blade 5. Therefore, the operator can grip the handle 3 with the same feel as a typical shovel and push the entire tool 1 forward.

[0031] Next, the method of use and operation of the hand tool 1 in this embodiment will be described. The operator grips the handle portion 3 with both hands and positions the tip blade portion 5 facing the boundary between the floor surface F and the attached material K. Then, the operator pushes the handle portion 3 straight forward and downward, and if necessary, places one foot on the rear portion 6 and steps down, thereby causing the upper cutting edge 5a of the tip blade portion 5 to bite into the boundary. At this time, the cutting edge 5a enters between the floor surface F and the attached material K, scraping off the leading edge of the attached material K and separating it from the floor surface F.

[0032] A portion of the adhering material K, lifted by the tip blade 5, comes into contact with the cutting edges 4d formed on the front half of the left and right side portions 4b and 4c. Since these cutting edges 4d are located on the upper outer edge of the side portions 4b and 4c, as the tool 1 is pushed forward, they come into contact with the side or top surface of the adhering material K that protrudes outward in the tool width direction, and act to cut it away with the outwardly protruding ridges, guiding it into the cavity 8. On the other hand, since there are no blades on the rear portion 6 where the worker places their foot and the rear half of the side portions 4b and 4c that are continuous with it, the risk of the worker touching the cutting edges when stepping on or maneuvering the tool is reduced.

[0033] The detached deposits K are sequentially discharged to the back side of the tip 2 through the cavity 8 surrounded by the contour 4. Because the tip 2 is hollow and does not have a dish-shaped portion, deposits K are less likely to accumulate in front of the tip 2, and the operator can continuously detach deposits K located at the back simply by pushing the tool 1 linearly forward along the floor surface F. As a result, the amount of deposit movement is minimized, and a wide area can be detached in a short time with relatively little force.

[0034] It should be noted that the hand tool 1 in this embodiment is intended for relatively soft deposits K such as soil, powder, and feed, and is not necessarily suitable for removing extremely hard and firmly attached deposits such as mortar and concrete. However, it is effective in improving work efficiency and reducing the burden on workers when removing large amounts of deposits from the beds of dump trucks or the floors of agricultural, livestock, and food-related facilities. [Industrial applicability]

[0035] The "shovel-shaped hand tool specifically designed for peeling" according to this invention is intended for efficiently removing relatively soft materials such as soil, powder, and animal feed that adhere to the floors of dump truck beds and various facilities by hand, and can be suitably used for cleaning and maintenance work in civil engineering, construction, transportation, agriculture, livestock farming, food-related industries, etc.

[0036] For example, in the civil engineering and construction sector, it can be applied to the removal of residual material after soil and aggregates have been discharged from the beds of dump trucks. In the transportation sector, it can be used to clean the floors of vehicles and containers that transport powders and granular materials. Furthermore, in the agriculture and livestock sector, it can be used to clean livestock barns and feed storage facilities where feed and bedding have accumulated and adhered to the floors. In the food-related sector, it can be used to clean processing plants and warehouses where relatively soft powders and raw materials adhere to the floors.

[0037] Thus, the hand tool of this invention is not limited to specific applications and can be widely used in various industrial fields where relatively soft deposits occur on floor surfaces. It has practical industrial applicability that improves the efficiency of deposit removal work and reduces the physical burden on workers. [Explanation of symbols]

[0038] 1. Hand Tools (Overall) 2 Tip 3 Handle 4. Contour (entire frame-like portion) 4b Side part (left side) 4c Side part (right side) 4d Upper outer edge cutting edge of the first half of the side section (side cutting edge) 5. Tip blade 5a Cutting edge on the upper surface of the tip blade 6. Rear section (foot-operated section) 7. Mounting part (metal fitting that secures the handle part 3) 8. Cavity (opening surrounded by contour portion 4) F Floor K Adhering materials (relatively soft materials such as soil, powder, and animal feed) Table 1

Claims

[Claim 1] A shovel-shaped hand tool 1, specifically designed for manually removing attached material K from a floor surface F, has no dish-shaped portion for holding soil or sand, and comprises a hollow tip portion 2 consisting only of a surrounding contour portion 4, and a handle portion 3 connected to the back side of the tip portion 2, wherein the contour portion 4 is formed in a frame shape by a straight tip blade portion 5 facing the floor surface F, a pair of left and right side portions 4b, 4c extending substantially linearly to the rear from both ends of the tip blade portion 5, and a rear portion 6 connecting the rear ends of these side portions 4b, 4c, and the interior enclosed by these is open as a hollow portion 8, and a straight cutting edge 5a is formed on the upper side of the tip blade portion 5 to scrape off the attached material K when pressed into the boundary between the floor surface F and the attached material K. A shovel-shaped hand tool characterized in that, of the side portions 4b and 4c, a straight cutting edge 4d is formed on the upper outer edge of the front half portion continuous with the tip blade portion 5, extending from both ends of the tip blade portion 5 toward the rear, and no cutting edge is formed on the rear half portion of the side portions 4b and 4c that is close to the rear surface portion 6 and on the rear surface portion 6, and the attached material K peeled off from the floor surface F by the tip blade portion 5 and the cutting edges 5a and 4d of the side portions 4b and 4c is sequentially discharged to the rear side of the tip portion 2 through the cavity portion 8.

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