Hand-held rust removal device

Abstract

The utility model belongs to the technical field of grinding, polishing, especially relates to a handheld rust cleaning device, specifically relates to a handheld rust cleaning device for rust cleaning of guardrail steel components, the utility model discloses a polishing unit, handheld unit, fixed unit, wherein: polishing unit includes two saddle -shaped spare, wedge spare, handheld unit includes handrail spare, hinge spare, locking piece, polishing unit still includes polishing spare, the utility model discloses through the accurate matching guardrail cylindrical surface of the concave arc structure of saddle -shaped spare, cooperation open -shut design, ensure that the device tightly wraps guardrail and carries out polishing rust cleaning work, need not extra power, chemical rust cleaning device, the utility model still through the wedge spare first removes the rust layer, and the wedge spare and polishing spare synergistic effect, and the speed is faster than pure polishing or pure chemical rust cleaning, and is applicable to mild, moderate to severe corrosion.

Description

Technical Field

[0001] This utility model belongs to the field of grinding and polishing technology, and in particular relates to a grinding machine, specifically a handheld rust removal device for removing rust from steel components of guardrails. Background Technology

[0002] Guardrails are protective structural systems installed at the edges of platforms, such as bridge railings. Installed along the edges of bridges, they prevent vehicles or pedestrians from accidentally falling off the bridge, reducing the risk of traffic accident injuries and fatalities. Bridge railings, especially those near cross-sea bridges, are susceptible to corrosion due to long-term exposure to moisture and salt spray. Corrosion weakens the structural strength and can further lead to the failure of connectors, making regular rust removal necessary for bridge railings.

[0003] Currently, when removing rust from bridge railings, it is usually necessary to first spray rust remover onto the rusted area before treatment. For example, Chinese invention patent CN118653368A discloses a rust-removing tram capable of spraying rust remover. In use, a robotic arm is activated to spray the rust remover onto the rust. After the rust reacts with the rust, generating waste liquid, a waste liquid removal module is activated to suck the waste liquid into a waste liquid tank. After the waste liquid is removed, the tram returns to its original position.

[0004] However, the equipment used in this method is extremely complex, which increases the learning cost of the rust removal process and the cost of purchasing the equipment. In addition, the complex structure of the equipment makes it difficult to carry. For some temporary rust removal scenarios, such as when there are only some rust spots on the guardrail, it does not achieve the effect of saving labor. Utility Model Content

[0005] The purpose of this invention is to provide a handheld rust removal device that uses the concave arc structure of a saddle-shaped component to match the cylindrical surface of a guardrail, wrapping the guardrail to perform grinding and rust removal work. It is easy to carry and does not require additional electric or chemical rust removal devices.

[0006] The technical solution adopted by this utility model to solve the above problems is: a handheld rust removal device, comprising a grinding unit, a handheld unit, and a fixing unit, wherein: The grinding unit includes two saddle-shaped parts and a wedge-shaped part disposed at the end of the saddle-shaped parts; The handheld unit includes a handrail mounted on the saddle-shaped component; The fixing unit includes hinges with movable ends respectively disposed on two saddle-shaped parts, and a locking element disposed on the saddle-shaped parts at the other end of the hinges; The grinding unit also includes a grinding element disposed inside the saddle-shaped part.

[0007] A further preferred technical solution is that the end of the wedge-shaped part is upturned.

[0008] A further preferred technical solution is that the bottom end of the wedge-shaped part and the inner side surface of the saddle-shaped part are on the same plane.

[0009] A further preferred technical solution is that the wedge-shaped part is elastic and has a downward-curving end.

[0010] A further preferred technical solution is that the handrail component has rounded corners.

[0011] A further preferred technical solution is that the locking component includes two sets of fixing plates respectively disposed on the saddle-shaped component, screw holes disposed on the fixing plates, and bolts simultaneously screwed into the two sets of screw holes.

[0012] A further preferred technical solution is that the grinding part has diagonal grooves for rust removal.

[0013] A further preferred technical solution is that the saddle-shaped component and the fixing plate are elastic.

[0014] A further preferred technical solution is that the wedge-shaped parts are respectively disposed at both ends of the saddle-shaped parts.

[0015] A further preferred technical solution is that the grinding part and the saddle-shaped part are integrally formed.

[0016] In summary, this utility model has the following advantages: 1. This utility model uses the concave arc structure of the saddle-shaped component to precisely match the cylindrical surface of the guardrail. Combined with the openable design, it ensures that the device tightly wraps around the guardrail for grinding and rust removal, without the need for additional electric or chemical rust removal devices.

[0017] 2. This utility model removes the rust layer first by using a wedge-shaped part. The wedge-shaped part works in conjunction with the grinding part, which is faster than pure grinding or pure chemical rust removal. It is suitable for light, medium to heavy rust.

[0018] 3. The wedge-shaped part of this utility model can be configured with different shapes, such as upturned / flat / downturned ends, and the grinding strategy can be flexibly selected according to the degree of corrosion.

[0019] 4. The saddle-shaped component and fixing plate of this utility model are designed with elasticity to adapt to guardrails with a diameter slightly larger than that of the device. Attached Figure Description

[0020] The invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the hinge of the handheld rust removal device of this utility model.

[0021] Figure 2 This is a schematic diagram of the locking surface of the handheld rust removal device of this utility model.

[0022] Figure 3This is a side view of the saddle-shaped component of this utility model.

[0023] Figure 4 This is a cross-sectional schematic diagram of the saddle-shaped component of this utility model.

[0024] Figure 5 This is a schematic diagram showing the slight deformation of the saddle-shaped component and the fixing plate of this utility model.

[0025] Figure 6 This is a schematic diagram showing the wedge-shaped part of this utility model in an upward-curved state.

[0026] Figure 7 This is a schematic diagram showing the wedge-shaped part of this utility model being in the same plane as the inner side of the saddle-shaped part.

[0027] Figure 8 This is a schematic diagram showing the wedge-shaped component of this utility model in a downward-curving state.

[0028] In the attached diagram, the components represented by each number are as follows: saddle-shaped component 1, wedge-shaped component 2, armrest component 3, rounded corner portion 3.1, hinge component 4, locking component 5, fixing plate 5.1, screw hole 5.2, bolt 5.3, and polished component 6. Detailed Implementation

[0029] Based on the problems raised in the background art, there is a current need for a device that is both portable and capable of removing rust from bridge railings. Firstly, bridge railings are typically cylindrical structures, and for minor rust, grinding alone can achieve a quick rust removal effect. Therefore, if a grinding mechanism can be designed to match the curved surface of the railings, the rust removal effect can be greatly improved. Based on this, this embodiment discloses a device suitable for rust removal of steel components in composite bridge railings, to solve the problems raised in the background art.

[0030] The present invention will be specifically illustrated below with reference to embodiments: This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law. Example:

[0031] refer to Figure 1-8 A handheld rust removal device includes a grinding unit, a handheld unit, and a fixing unit, wherein: The grinding unit includes two saddle-shaped parts 1 and a wedge-shaped part 2 disposed at the end of the saddle-shaped parts 1; The handheld unit includes a handrail 3 mounted on the saddle-shaped component 1; The fixing includes hinges 4 with their movable ends respectively disposed on the two saddle-shaped parts 1, and a locking part 5 disposed on the saddle-shaped parts 1 at the other end relative to the hinges 4; The grinding unit also includes a grinding element 6 disposed inside the saddle-shaped part 1.

[0032] The device disclosed herein is a type of handheld rust removal device used to remove rust from the surface of guardrails through physical abrasion. Its design features include an openable / closable mechanism for easy attachment to cylindrical guardrails and a locking mechanism for secure fixation. During operation, the user holds the device and moves it across the guardrail surface for efficient rust removal.

[0033] Saddle-shaped component 1 is the main structural component of the device. Its shape resembles a saddle, specifically a concave, curved surface to match the cylindrical surface of the bridge railing. (Reference) Figures 1-5 The saddle-shaped component is a semi-circular or U-shaped shell, made of existing lightweight metals such as aluminum alloy, which are easy to process into an arc shape. The inner arc radius matches the specifications of common guardrails. This disclosure does not further limit the specific specifications of the saddle-shaped component 1. The saddle-shaped component 1 mainly serves as a support and load-bearing body, and its functions include fixing other components, such as the wedge-shaped component 2 connected at the end, the grinding component 6 installed on the inner side, the handrail component 3 and the hinge component 4 set on the surface. Its arc-shaped design ensures that the device can closely fit the cylindrical contour of the guardrail, avoiding dead corners during grinding and improving the uniformity of rust removal.

[0034] The wedge-shaped component 2 is located at the end of the saddle-shaped component 1. Its shape is similar to a wedge, a conical block structure that is thicker at one end and thinner at the other. It can be made of existing elastic hard materials to provide friction and cushioning. The wedge-shaped component 2 serves as a preliminary rust remover, using its thinner end to remove as much rust as possible. The remaining rust is then processed by the grinding component 6, improving rust removal efficiency.

[0035] The grinding element 6 is located "inner" of the saddle-shaped component 1. Its shape is either an arc-shaped band or a sheet-like structure consistent with the inner arc surface of the saddle-shaped component 1, or it may be part of the structure of the saddle-shaped component 1 itself. Regardless of its form, the grinding element 6 should possess a certain degree of rigidity and roughness to fulfill its rust-removing function. By pushing the device, the grinding element 6 generates friction on the surface of the guardrail, removing rust and oxide layers. Its arc-shaped design reduces the number of grinding passes and improves the rust-removing effect on the entire cylindrical guardrail with each push, making it particularly suitable for "lighter degrees of rust."

[0036] Handrail 3 is mounted on saddle-shaped component 1 and is shaped as one or more "handrail" structures. It is made of an existing material that is compatible with saddle-shaped component 1 and can transmit pushing or pulling forces to it. Handrail 3 is installed in the middle or top of the outer surface of the saddle-shaped component, facilitating one-handed or two-handed gripping. For example, the user can control the direction and pressure of movement by holding the handrail 3 and pushing the device, making the rust removal process less strenuous.

[0037] The "moving ends" of the hinge 4 are respectively located on the two saddle-shaped parts 1. Their shape can be that of a hinge commonly used in the prior art, such as a rotatable structure consisting of two blades and a pin. The locking element 5 is located on the saddle-shaped parts 1, opposite the other end of the hinge 4, and its shape can be a mechanical latch, lever, or bolt structure. When the device is fitted onto the guardrail, the locking element 5 locks the two saddle-shaped parts 1 on opposite sides of the hinge 4, preventing accidental opening and ensuring the device does not loosen during polishing.

[0038] Furthermore, the user wants the wedge 2 to have as little impact as possible on the sliding process of the saddle 1 during operation; based on this, the end of the wedge 2 is upturned.

[0039] refer to Figure 6 "Upturned end" specifically refers to the thinner end of wedge 2, the working end for removing rust, bending or tilting upwards to form an arc-shaped or beveled profile. The upturned portion is usually slightly curved, similar to the front of a sled or the shape of a plowshare, and is typically integrally formed with the main body of the wedge. The main purpose of the upturned design is to further optimize the sliding performance and rust removal efficiency of the device. During rust removal, the device needs to be pushed by the user and slid along the surface of the guardrail column. If the end of the wedge is flat or sloping downwards, it may increase frictional resistance due to embedding in the rust layer or uneven surface, hindering the sliding process of saddle 1. The upturned shape allows wedge 2 to easily slide under the rusted area when it contacts the rust layer, rather than directly impacting it, thus reducing initial resistance. This makes saddle 1 and the entire device easier to start and maintain a uniform sliding speed.

[0040] Furthermore, the user desires that while the wedge 2 slightly affects the sliding process of the saddle 1 during operation, it should still achieve a certain degree of rust removal. Therefore, the bottom end of the wedge 2 is flush with the inner surface of the saddle 1. This arrangement aims to strike a balance between "smooth sliding" and "effective rust removal." For details, refer to... Figure 7 The bottom end of wedge 2, which is the working surface that may come into contact with the guardrail, is flush with the arc-shaped surface of the inner side of saddle 1, and the two together form a continuous contact plane. The thin end of the wedge retains its "wedge" structure, but the bottom end has no upward curve, forming a stable scraping edge. When the user pushes the device, the thin end of wedge 2 contacts the rust layer first, "scraping up" the rust through horizontal thrust, rather than merely serving a guiding function like the "upward curve design".

[0041] Furthermore, the user desires that while the wedge-shaped part 2 may slightly affect the sliding process of the saddle-shaped part 1 during operation, it should also play a major role in rust removal. Therefore, the wedge-shaped part 2 is elastic and has a downward-curved end. The use of an elastic material combined with the downward-curved end design is a technical solution for heavily corroded conditions. (Refer to...) Figure 8 The thin end of wedge 2 slopes downwards, forming a sharp-angled structure similar to a "plowshare." This downward-curving design allows the wedge to actively embed itself into the rust under thrust, directly removing blocky rust nodules and dense rust layers. Unlike the previous technical solutions, in this solution, wedge 2 undertakes a larger portion of the rust removal function, reducing reliance on the grinding component 6. Wedge 2 can be made of elastic materials such as spring steel, possessing high yield strength and resilience; that is, it trades operational resistance for destructive power against severe rust.

[0042] Furthermore, users expect the armrest 3 to reduce hand discomfort during gripping. Therefore, the armrest 3 features rounded corners 3.1. Square or sharp-edged armrests, when gripped for extended periods, exert concentrated pressure on specific areas of the palm, leading to localized pain and even blisters. The rounded corners 3.1, with their smooth transitions, distribute pressure as evenly as possible across a wider area of ​​the palm, reducing single-point pressure and preventing soft tissue damage.

[0043] Furthermore, users desire more convenient opening and closing of the locking element 5. Therefore, the locking element 5 includes two sets of fixing plates 5.1 respectively mounted on the saddle-shaped parts 1, screw holes 5.2 in the fixing plates 5.1, and bolts 5.3 simultaneously screwed into both sets of screw holes 5.2. The fixing plates 5.1 serve as the load-bearing base and force transmission hub of the locking element 5. The two sets of fixing plates are welded / riveted to the edges of the two saddle-shaped parts 1 that need to be locked, ensuring alignment of the opening and closing axes. The two sets of screw holes 5.2 pass through the fixing plates 5.1 in a coaxial mirror manner, allowing both ends of the bolts to be screwed in simultaneously. The bolts 5.3 are simultaneously screwed into and tightened into the two sets of screw holes 5.2, thereby locking the two sets of fixing plates 5.1 together.

[0044] Furthermore, the polished part 6 has diagonal grooves for rust removal. (See reference) Figures 1-2 The diagonal lines form continuous serrated ridges, and each line edge has a micron-level cutting edge. Typically, when the diagonal lines are at a 45° angle, the cutting edge uses shearing force instead of friction to directly cut the rust layer, improving the rust removal effect.

[0045] Furthermore, users expect the saddle-shaped component 1 to be adaptable to different sizes of guardrails. Therefore, both the saddle-shaped component 1 and the fixing plate 5.1 are flexible. (See reference...) Figure 5 The saddle-shaped component 1 is designed with elasticity, which enables the device to adapt to the diameter of the guardrail through structural flexibility. At the same time, the fixing plate 5.1 is also set with elasticity, so that even if the saddle-shaped component 1 undergoes a certain deformation, the fixing plate 5.1 can maintain the two sets of fixing plates 5.1 in a parallel state through elastic deformation, so that the bolt 5.3 can continue to be screwed into the two screw holes 5.2, achieving a fixing effect.

[0046] Furthermore, users desire effective rust removal in any sliding direction. Based on this, wedge-shaped parts 2 are respectively positioned at both ends of the saddle-shaped part 1. The symmetrical placement of wedge-shaped parts 2 at both ends of the saddle-shaped part 1 gives the device bidirectional active rust removal capability, and the rust removal function can be further diversified by adjusting the orientation angle of the wedge-shaped parts 2 at both ends. For example, by setting up-curved and down-curved wedge-shaped parts 2 at both ends of the saddle-shaped part 1 respectively, the asymmetrical structure simultaneously achieves a combination of lightweight pretreatment and heavy-duty rust removal. Specifically, the actual operating procedure of the above device can be as follows: first, the down-curved end is used to press into the rust core, prying up the blocky rust; then, the device is pushed in the opposite direction, allowing the up-curved end to pass over the remaining rust marks, enabling the grinding part 6 to smoothly perform deep grinding on the remaining rust marks, achieving thorough rust removal.

[0047] Furthermore, the grinding part 6 and the saddle-shaped part 1 are integrally formed. Specifically, the grinding part 6 is a friction surface carved into the inner side of the saddle-shaped part 1, which ensures that the grinding part 6 and the saddle-shaped part 1 will not have relative displacement during the grinding process, which is beneficial to the grinding process.

[0048] Furthermore, the grinding component 6 is fixed to the inner surface of the saddle-shaped component 1. Specifically, the grinding component 6 is a layered component, one side of which has a high coefficient of friction (for grinding), and the other side is fixed to the inner surface of the saddle-shaped component 1 by existing technologies such as bonding or snap-fitting. This arrangement facilitates the replacement of the grinding component 6 after it has been worn down from repeated use.

[0049] The usage / operation method of the above-mentioned handheld rust removal device is as follows: First, select the type of wedge 2 based on the degree of rust. Separate the two saddle-shaped parts 1 using hinge 4 to create an open state. Align the concave arc surface of the saddle-shaped part 1 with the cylindrical surface of the bridge railing and place it on top. The arc design of the saddle-shaped part will automatically conform to the railing contour. Lock the device using locking part 5. If locking part 5 is a bolt design, screw the bolt 5.3 into both sets of screw holes 5.2 simultaneously and tighten to secure the device firmly to the railing. If the railing diameter is slightly larger than the diameter of the saddle-shaped part 1, the elastic design of the saddle-shaped part 1 and the fixing plate 5.1 can adapt to deformation, ensuring the bolt can be securely fixed. The operator holds the handrail 3 with one or both hands, providing push or pull force to push or pull the device linearly along the railing surface. Once the rust is cleaned, stop moving and loosen the locking part 5, for example, by reverse-tightening the bolt 5.3 to open the device. Separate the saddle-shaped part 1 using hinge 4 and remove it from the railing. After operation, clean the rust and dust from the polishing part 6. The above are merely preferred embodiments of the present invention and are not intended to limit the scope of the invention. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of the present invention indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" in the description should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

Claims

1. A handheld rust removal device, characterized in that, Includes a polishing unit, a handheld unit, and a fixing unit, among which: The grinding unit includes two saddle-shaped parts (1) and a wedge-shaped part (2) disposed at the end of the saddle-shaped parts (1). The handheld unit includes a handrail (3) disposed on the saddle-shaped component (1); The fixing unit includes hinges (4) with movable ends respectively disposed on the two saddle-shaped parts (1), and a locking part (5) disposed on the saddle-shaped parts (1) at the other end relative to the hinges (4). The grinding unit also includes a grinding component (6) disposed inside the saddle-shaped component (1).

2. The handheld rust removal device according to claim 1, characterized in that, The wedge-shaped part (2) has an upward curve at its end.

3. The handheld rust removal device according to claim 1, characterized in that, The bottom end of the wedge-shaped part (2) is on the same plane as the inner side of the saddle-shaped part (1).

4. The handheld rust removal device according to claim 1, characterized in that, The wedge (2) is elastic and has a downward-curved end.

5. The handheld rust removal device according to claim 1, characterized in that, The handrail component (3) has rounded corners (3.1).

6. The handheld rust removal device according to claim 1, characterized in that, The locking member (5) includes two sets of fixing plates (5.1) respectively disposed on the saddle-shaped member (1), screw holes (5.2) disposed on the fixing plates (5.1), and bolts (5.3) simultaneously screwed into the two sets of screw holes (5.2).

7. The handheld rust removal device according to claim 1, characterized in that, The polishing part (6) has diagonal lines for rust removal.

8. The handheld rust removal device according to claim 1, characterized in that, The saddle-shaped component (1) and the fixing plate (5.1) are elastic.

9. The handheld rust removal device according to claim 1, characterized in that, The wedge-shaped member (2) is respectively disposed at both ends of the saddle-shaped member (1).

10. The handheld rust removal device according to claim 1, characterized in that, The grinding part (6) and the saddle-shaped part (1) are integrally formed.

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