A polishing device for steel structure welding

Abstract

The utility model relates to the field of steel structure manufacturing especially relates to a kind of polishing device for steel structure welding, including the fixed frame and floating seat of upper and lower corresponding arrangement, the fixed frame is connected with the upper surface right side of floating seat by elastic component, installation lug is set up on elastic component, positioning assembly is installed between fixed frame and floating seat, installation support foot is set up on fixed frame, limiting component is set up on floating seat, limiting component is assembled in the sliding hole of installation lug, and polishing assembly is installed in the left side of floating seat by mounting plate, the utility model realizes the floating adjustment of polishing head by elastic component, can be according to the self-adapting adjustment pressure of workpiece surface height variation, promote the polishing quality of steel surface, floating design reduces manual intervention, cooperate with mechanical arm and can realize automatic polishing, improve operating efficiency and consistency, by the cooperative work of positioning assembly and limiting component, limit the horizontal deviation and floating range of floating seat, ensure that polishing trajectory is accurate.

Description

Technical Field

[0001] This utility model relates to the field of steel structure manufacturing, and in particular to a grinding device for steel structure welding. Background Technology

[0002] In the field of steel structure manufacturing, welding is one of the most common connection processes. It is widely used in the processing and assembly of building steel structures, bridge components, heavy equipment frames and ship structures. Because welding produces surface defects such as weld reinforcement, weld slag and spatter, it is usually necessary to grind the weld and its adjacent areas to ensure the quality of subsequent spraying, corrosion protection or assembly.

[0003] Existing automatic or semi-automatic grinding equipment generally adopts a rigid grinding head structure, which maintains constant pressure during grinding. However, when encountering uneven welds or curved surfaces, the rigid grinding head cannot keep up with the changes in the workpiece surface in real time, which can easily lead to local over-grinding or insufficient grinding, affecting surface quality. In the scenario of steel structure weld repair, due to the large weight of the workpiece, the long length of the weld, and the uneven welding deformation, traditional rigid grinding heads cannot maintain a constant grinding force, resulting in uneven wear and unstable grinding.

[0004] Therefore, it is necessary to further improve the grinding equipment used for steel structure welding. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a grinding device for steel structure welding. It adopts an elastic floating structure, which can float according to the changes in the workpiece surface, prevent local over-grinding or insufficient grinding, ensure constant grinding force, improve grinding quality, and effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grinding device for steel structure welding, comprising a fixed frame and a floating seat arranged correspondingly at the top and bottom, the fixed frame being connected to the right side of the upper surface of the floating seat via an elastic component, the elastic component being provided with a mounting ear, a positioning component being installed between the fixed frame and the floating seat, a mounting leg being provided on the fixed frame, a limiting component being provided on the floating seat, the limiting component being assembled in the sliding hole of the mounting ear, and a grinding component being installed on the left side of the floating seat via a mounting plate.

[0007] Preferably, the positioning assembly includes a positioning rod and a sleeve. The positioning rod is disposed on the lower surface of the fixed frame, and the sleeve is disposed on the upper surface of the floating seat. The lower end of the positioning rod is slidably installed inside the sleeve.

[0008] Preferably, the grinding assembly includes a motor and a grinding head. The motor is mounted in the mounting slot on the left side of the floating seat via a mounting plate, and the grinding head is mounted on the output shaft end of the motor via a connector.

[0009] Preferably, the elastic component includes a spring, a fixed ring, and an elastic damper. The elastic damper is installed on the lower surface of the fixed frame, and its telescopic end is connected to the floating seat through a connecting seat. The fixed ring is fixedly fitted onto the elastic damper. The two ends of the spring abut against the floating seat and the fixed ring, respectively, and the elastic damper is located inside the spring. The mounting lug is connected to the fixed ring.

[0010] Preferably, it also includes a limiting ring, which is disposed on the upper surface of the floating seat, and the lower end of the spring is disposed inside the limiting ring to prevent the spring from sliding.

[0011] Preferably, the limiting component includes a limiting screw and an adjusting nut. The limiting screw is disposed on the upper surface of the floating seat and is fitted into the sliding hole of the mounting ear. The adjusting nut is threaded onto the limiting screw and contacts the upper surface of the mounting ear.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention achieves floating adjustment of the grinding head through an elastic component, which can adaptively adjust the pressure according to the changes in the height of the workpiece surface, avoiding over-grinding or insufficient grinding, improving the grinding quality of the steel surface, reducing manual intervention, and enabling automated grinding when combined with a robotic arm, thus improving work efficiency and consistency.

[0014] This invention uses positioning and limiting components to work together to limit the horizontal offset and floating range of the floating seat, ensuring accurate grinding trajectory and reducing vibration impact. The adjusting nut and manually adjustable elastic component are simple in design, making it easy to adjust the floating range and pressure to meet the needs of different workpieces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the present invention.

[0017] Figure 3 This is a bottom view of the structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Fixing frame; 2. Positioning assembly; 201. Positioning rod; 202. Sleeve; 3. Grinding assembly; 301. Motor; 302. Grinding head; 4. Mounting plate; 5. Floating seat; 6. Elastic assembly; 601. Spring; 602. Fixing ring; 603. Elastic damper; 7. Mounting foot; 8. Limiting ring; 9. Limiting assembly; 901. Limiting screw; 902. Adjusting nut; 10. Mounting lug. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, they are based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a grinding device for steel structure welding, including a fixed frame 1 and a floating seat 5 arranged correspondingly at the top and bottom. The fixed frame 1 is connected to the right side of the upper surface of the floating seat 5 through an elastic component 6. The elastic component 6 is provided with a mounting ear 10. A positioning component 2 is installed between the fixed frame 1 and the floating seat 5. A mounting support 7 is provided on the fixed frame 1. A limiting component 9 is provided on the floating seat 5. The limiting component 9 is assembled in the sliding hole of the mounting ear 10. A grinding component 3 is installed on the left side of the floating seat 5 through a mounting plate 4.

[0022] Specifically, the mounting bracket 1 serves as the support structure for the entire grinding device, used to fix the device to an external workbench or robotic arm. The mounting feet 7 on the bracket connect the entire grinding device to the external equipment through bolts or other fixing methods, ensuring the stability of the device during the grinding process. The mounting bracket 1 can be made of carbon steel or aluminum alloy, with a thickness of 8-15mm, to balance strength and lightweight design.

[0023] The floating seat 5 is located below the fixed frame 1 and serves as the support platform for the grinding component 3. It is connected to the fixed frame 1 through the elastic component 6 to achieve the floating adjustment function. The floating seat 5 can be made of high-strength steel plate or cast iron to ensure its rigidity.

[0024] Furthermore, the positioning component 2 includes a positioning rod 201 and a sleeve 202. The positioning rod 201 is disposed on the lower surface of the fixed frame 1, and the sleeve 202 is disposed on the upper surface of the floating seat 5. The lower end of the positioning rod 201 is slidably installed inside the sleeve 202.

[0025] The function of the positioning component 2 is to limit the horizontal displacement of the floating seat 5 relative to the fixed frame 1, and to ensure that the floating adjustment of the grinding component 3 in the vertical direction is accurate. The positioning rod 201 and the sleeve 202 adopt a clearance fit, and the clearance is generally 0.1-0.5mm to ensure smooth sliding and avoid shaking. The positioning rod 201 and the sleeve 202 can be made of stainless steel or chrome-plated steel to improve wear resistance.

[0026] Furthermore, the grinding assembly 3 includes a motor 301 and a grinding head 302. The motor 301 is mounted in the mounting slot on the left side of the floating seat 5 via a mounting plate 4, and the grinding head 302 is mounted on the output shaft end of the motor 301 via a connector.

[0027] The grinding component 3 is the core component for grinding the weld. The motor 301 provides power to drive the grinding head 302 to rotate at high speed to remove the weld slag or spatter. The motor 301 can be a DC brushless motor or an AC servo motor, with a power of 500-1500W. The specific power is selected according to the grinding requirements.

[0028] The 302 grinding head can be made of grinding wheels, abrasive belts, or wire wheels. The material is selected according to the surface requirements of the workpiece. For example, alumina grinding wheels are used for ordinary steel, while silicon carbide grinding wheels are used for high-hardness materials.

[0029] Mounting plate 4 is bolted to floating seat 5 to ensure that motor 301 is installed securely. The material can be steel plate or aluminum alloy.

[0030] Furthermore, the elastic component 6 includes a spring 601, a fixed ring 602, and an elastic damper 603. The elastic damper 603 is installed on the lower surface of the fixed frame 1, and its telescopic end is connected to the floating seat 5 through a connecting seat. The fixed ring 602 is fixedly fitted onto the elastic damper 603. The two ends of the spring 601 abut against the floating seat 5 and the fixed ring 602 respectively, and the elastic damper 603 is disposed inside the spring 601. The mounting lug 10 is connected to the fixed ring 602.

[0031] The elastic component 6 is the key to realizing the floating function of the floating seat 5. It provides elastic force through the spring 601, so that the grinding head 302 can adaptively adjust the pressure according to the changes in the height of the workpiece surface; the elastic damper 603 provides a damping effect, reduces the rapid vibration of the floating seat 5, and ensures a smooth grinding process.

[0032] Spring 601 can be a compression spring made of high-strength steel wire. The elastic coefficient is selected according to the grinding pressure requirements, generally 10-50N / mm. Elastic damper 603 can be a hydraulic or pneumatic damper, and the damping force can be adjusted from 50-200N.

[0033] The retaining ring 602 and the mounting lug 10 are made of steel to ensure connection strength.

[0034] Furthermore, it also includes a limiting ring 8, which is disposed on the upper surface of the floating seat 5, and the lower end of the spring 601 is disposed inside the limiting ring 8 to prevent the spring 601 from sliding.

[0035] The limiting ring 8 is fixed to the floating seat 5 by welding. Its inner diameter is slightly larger than the outer diameter of the spring 601 to limit the lateral displacement of the spring 601 and ensure its stability during compression and rebound. The limiting ring 8 can be made of steel or hard aluminum alloy.

[0036] Furthermore, the limiting component 9 includes a limiting screw 901 and an adjusting nut 902. The limiting screw 901 is disposed on the upper surface of the floating seat 5 and is fitted into the sliding hole of the mounting ear 10. The adjusting nut 902 is threaded onto the limiting screw 901 and contacts the upper surface of the mounting ear 10.

[0037] The limiting component 9 is used to limit the maximum floating range of the floating seat 5 to prevent the grinding head 302 from being excessively pressed down or lifted due to abrupt changes in the workpiece surface. The limiting screw 901 is fixed to the floating seat 5 by thread or welding. The adjusting nut 902 adjusts the upper limit of the floating seat 5 by rotation. The diameter of the sliding hole is slightly larger than that of the limiting screw 901 to ensure smooth sliding. The limiting screw 901 and the adjusting nut 902 can be made of stainless steel or carbon steel, and the surface can be galvanized to enhance corrosion resistance.

[0038] The method of using this utility model is as follows:

[0039] First, fix the bracket 1 to the worktable or robotic arm by installing the support leg 7, and place the steel structure workpiece to be ground under the grinding head 302.

[0040] According to the surface condition of the workpiece and the grinding requirements, adjust the limiting component 9: rotate the adjusting nut 902 to change the relative position of the limiting screw 901 in the sliding hole of the mounting ear 10, and set the floating range of the floating seat 5 to generally 5-20mm.

[0041] Start the motor 301 to drive the grinding head 302 to rotate, and at the same time move the device along the weld seam. The spring 601 and the elastic damper 603 in the elastic component 6 work together to make the floating seat 5 float up and down according to the height change of the workpiece surface, ensuring that the grinding head 302 maintains a constant contact pressure with the workpiece surface.

[0042] The positioning rod 201 of the positioning component 2 slides inside the sleeve 202, limiting the horizontal offset of the floating seat 5 and ensuring the accuracy of the grinding trajectory. After grinding is completed, the motor 301 is turned off, the device is removed, and the surface quality of the workpiece is checked.

[0043] It is worth noting that the parameters of the spring 601 and the elastic damper 603 of the elastic component 6 can be adjusted according to the workpiece material and weld characteristics. For example, a spring 601 with a higher elastic coefficient can be selected for harder materials. The type and grit of the grinding head 302 can be changed according to the grinding accuracy requirements. For example, a 60-80 grit grinding wheel can be used for rough grinding, and a 120-200 grit grinding wheel can be used for fine grinding. When processing long welds, multiple grinding devices can be used in conjunction with a robotic arm or guide rail system to improve efficiency and ensure consistency.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A grinding device for welding steel structures, comprising a fixed frame (1) and a floating seat (5) arranged correspondingly at the top and bottom, characterized in that: The fixed frame (1) is connected to the right side of the upper surface of the floating seat (5) through the elastic component (6). The elastic component (6) is provided with a mounting ear (10). A positioning component (2) is installed between the fixed frame (1) and the floating seat (5). A mounting leg (7) is provided on the fixed frame (1). A limiting component (9) is provided on the floating seat (5). The limiting component (9) is assembled in the sliding hole of the mounting ear (10). A grinding component (3) is installed on the left side of the floating seat (5) through the mounting plate (4).

2. The grinding device for steel structure welding according to claim 1, characterized in that: The positioning component (2) includes a positioning rod (201) and a sleeve (202). The positioning rod (201) is disposed on the lower surface of the fixed frame (1), and the sleeve (202) is disposed on the upper surface of the floating seat (5). The lower end of the positioning rod (201) is slidably installed inside the sleeve (202).

3. The grinding device for steel structure welding according to claim 1, characterized in that: The grinding assembly (3) includes a motor (301) and a grinding head (302). The motor (301) is mounted in the mounting slot on the left side of the floating seat (5) via a mounting plate (4), and the grinding head (302) is mounted on the output shaft end of the motor (301) via a connector.

4. The grinding device for steel structure welding according to claim 1, characterized in that: The elastic component (6) includes a spring (601), a fixed ring (602), and an elastic damper (603). The elastic damper (603) is installed on the lower surface of the fixed frame (1), and its telescopic end is connected to the floating seat (5) through a connecting seat. The fixed ring (602) is fixedly fitted onto the elastic damper (603). The two ends of the spring (601) abut against the floating seat (5) and the fixed ring (602) respectively, and the elastic damper (603) is located inside the spring (601). The mounting ear (10) is connected to the fixed ring (602).

5. A grinding device for steel structure welding according to claim 4, characterized in that: It also includes a limiting ring (8), which is disposed on the upper surface of the floating seat (5), and the lower end of the spring (601) is disposed inside the limiting ring (8) to prevent the spring (601) from sliding.

6. The grinding device for steel structure welding according to claim 1, characterized in that: The limiting component (9) includes a limiting screw (901) and an adjusting nut (902). The limiting screw (901) is disposed on the upper surface of the floating seat (5) and is fitted into the sliding hole of the mounting ear (10). The adjusting nut (902) is threaded onto the limiting screw (901) and contacts the upper surface of the mounting ear (10).

Images