Polishing device for steel structure component

Abstract

A polishing device for a steel structure component comprises a polishing mechanism and a handheld part connected to the polishing mechanism, the polishing mechanism comprises a mounting base, a grinding disc driven by a motor to rotate is arranged below the mounting base, the grinding disc and the motor are arranged concentrically, and the tail end of an output shaft of the motor is connected with a circular base; the grinding disc is located on the side, opposite to the motor, of the circular base, a through hole is formed in the center of a boss, protruding towards the circular base, located in the middle of the grinding disc, and the buckling mechanism located on the circular base penetrates through the through hole and is located in a limiting position for limiting axial movement and circumferential rotation of the boss or an avoiding position separated from the boss. The fastening mechanism can be controlled to be located at a limiting position for limiting axial movement and circumferential rotation of the boss so as to quickly fix the grinding disc, or the fastening mechanism can be controlled to be located at an avoiding position separated from the boss so as to quickly cancel fixation of the grinding disc, so that a new grinding disc can be replaced, the grinding disc is convenient to disassemble and assemble, and the grinding efficiency of the steel structure component is indirectly improved.

Description

Technical Field

[0001] The utility model patent relates to steel structure processing, and specifically to a polishing device for steel structure parts. Background Art

[0002] Steel structure components are important building structural components, which mainly include steel sections, steel plates, steel beams, steel columns, steel trusses, etc. Among them, during the production process of steel structure components, the components need to be stored after production, and the current storage method is mostly placed directly in the external environment. As time accumulates, rust is easy to form on the components. When the components are used later, they need to be polished to remove the rust.

[0003] For the grinding of large components (such as steel beams, steel columns, etc.), due to the large size of the components and cost considerations, general rust removal methods such as shot peening and acid immersion are not applicable, so the components are mostly manually ground and polished by hand-held grinders. Among them, due to the large workload and structural limitations of different positions of the components, the frequency of replacement of the grinding disc is relatively high. In the prior art, the grinding disc and the base of the polishing machine are generally fastened with a number of bolts. When replacing the grinding disc, the bolts are repeatedly tightened, which is cumbersome and requires the use of specific tools, making it difficult to disassemble the grinding disc and the replacement operation is relatively inconvenient. The convenience of disassembly and assembly of the grinding disc needs to be improved. Summary of the invention

[0004] The utility model provides a polishing device for steel structure parts, which can quickly disassemble and assemble the grinding disc and the machine base, so as to facilitate the rapid replacement of the grinding disc.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted is: a polishing device for steel structural parts, including a polishing mechanism and a hand-held part connected to the polishing mechanism, the polishing mechanism including a mounting seat, a grinding disc driven to rotate by a motor is arranged below the mounting seat, and the grinding disc and the motor are arranged coaxially, a circular seat is connected to the end of the output shaft of the motor, the grinding disc is located on the side of the circular seat opposite to the motor, a through hole is opened in the center of a boss protruding toward the circular seat at the middle of the grinding disc, and a buckling mechanism located on the circular seat is inserted into the through hole and is in a limiting position for limiting the axial movement and circumferential rotation of the boss or in an avoidance position separated from the boss.

[0006] Compared with the prior art, the technical effect of the utility model is as follows: by opening a through hole at the center of the boss in the middle of the grinding disc, a snap-fit ​​mechanism on a circular seat driven to rotate by a motor is inserted into the through hole, and the snap-fit ​​mechanism can be controlled to be in a limiting position to limit the axial movement and circumferential rotation of the boss to quickly fix the grinding disc, or to be in an avoidance position separated from the boss to quickly cancel the fixation of the grinding disc so as to replace a new grinding disc. The grinding disc is easy to disassemble and assemble, and the grinding efficiency of steel structure components is indirectly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional appearance schematic diagram of the utility model;

[0008] Figure 2 It is a schematic diagram of the bottom of the polishing mechanism;

[0009] Figure 3 It is a schematic diagram of the circular seat and the grinding disc being separated;

[0010] Figure 4 It is a schematic diagram of the bottom of the circular seat;

[0011] Figure 5 It is a cross-sectional view of the polishing mechanism;

[0012] Figure 6 for Figure 5 Enlarged view of part A in . DETAILED DESCRIPTION

[0013] The following will be combined with the attached Figure 1-6 The embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the protection scope of the present application.

[0014] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0015] A polishing device for steel structural parts includes a polishing mechanism 10 and a handheld part 70 connected to the polishing mechanism 10. The polishing mechanism 10 includes a mounting seat 11. A grinding disc 20 driven to rotate by a motor 12 is arranged below the mounting seat 11, and the grinding disc 20 and the motor 12 are arranged coaxially. A circular seat 30 is connected to the end of the output shaft of the motor 12. The grinding disc 20 is located on the side of the circular seat 30 opposite to the motor 12. A through hole 221 is opened at the center of a boss 22 located in the middle of the grinding disc 20 and protruding toward the circular seat 30. The buckling mechanism located on the circular seat 30 is inserted into the through hole 221 and is in a limiting position for limiting the axial movement and circumferential rotation of the boss 22 or in an avoidance position separated from the boss 22.

[0016] In the above scheme, a through hole 221 is opened at the center of the boss 22 in the middle of the grinding disc 20, and the snap-fit ​​mechanism on the circular seat 30 driven to rotate by the motor 12 is inserted into the through hole 221. The snap-fit ​​mechanism can be controlled to be in a limiting position to limit the axial movement and circumferential rotation of the boss 22 to quickly fix the grinding disc 20, or to be in an avoidance position separated from the boss 22 to quickly cancel the fixation of the grinding disc 20 so as to replace it with a new grinding disc 20. The grinding disc 20 is easy to disassemble and assemble, which is conducive to the rapid polishing operation of steel structure components.

[0017] As a preferred solution, the buckle mechanism includes a connecting rod 41 arranged along the axis direction of the circular seat 30 in the rod length direction, the connecting rod 41 extends from the circular seat 30 to the boss 22 and has a buckle 411 at its cantilevered end, the buckle 411 is clamped on the end face of the boss 22 away from the circular seat 30, and the connecting rod 41 and the buckle 411 are in a limiting position for limiting the axial movement and circumferential rotation of the boss 22 or in an avoidance position separated from the boss 22. When the buckle 411 is clamped on the end face of the boss 22 away from the circular seat 30, the buckle 411 and the lower end face of the circular seat 30 form upper and lower limit positions for the boss 22, so that the boss 22 cannot be separated from the circular seat 30, and the axial movement of the boss 22 is limited; at the same time, the circumferential rotation of the boss 22 is further limited, and the boss 22 and the circular seat 30 can be locked to ensure the stable connection of the grinding disc 20. When the connecting rod 41 and the buckle 411 are in the avoidance position separated from the boss 22, the locking relationship between the connecting rod 41, the buckle 411 and the boss 22 is cancelled, and the grinding disc 20 and the circular seat 30 can be separated.

[0018] Furthermore, a slot 2211 arranged along the radial direction of the boss 22 is provided along the hole edge of the through hole 221, and the rod body of the connecting rod 41 at the overlapped part with the boss 22 is in the slot 2211 or is in a evasion position separated from the slot 2211 together with the buckle 411. When the connecting rod 41 is in the slot 2211, the boss 22 cannot rotate in the circumferential direction due to the mutual obstruction between the rod body of the connecting rod 41 and the side of the slot 2211. At the same time, in this state, the buckle 411 is in a state of engaging the lower end face of the boss 22. When the connecting rod 41 together with the buckle 411 is in the evasion position separated from the slot 2211, when the boss 22 rotates in the circumferential direction, the slot 2211 will not interfere with the connecting rod 41, and the buckle 411 is also separated from the lower end face of the boss 22 and is in the hole area of ​​the through hole 221. In this state, the boss 22 can be directly separated from the circular seat 30.

[0019] As a preferred solution, a center groove 31 is opened at the center of the end face of the circular seat 30 close to the boss 22, and sliding grooves 311 are arranged at equal intervals on the circumference of the groove wall of the center groove 31. The groove length direction of the sliding groove 311 is arranged along the radial direction of the circular seat 30. The sliding rod 40 is inserted into the sliding groove 311 to form a guiding limit fit. The end of the connecting rod 41 away from the buckle 411 is connected to the end of the sliding rod 40 close to the center groove 31, and the other end of the sliding rod 40 is connected to the opposite side of the sliding groove 311 through a spring 50. The sliding rod 40 moves radially along the circular seat 30 to realize the connection or separation of the buckle 411 and the boss 22.

[0020] In this solution, the slide groove 311 limits and guides the slide rod 40, so that the connecting rod 41 can only move along the radial direction of the circular seat 30. When the connecting rod 41 moves toward the center of the central groove 31, the connecting rod 41 together with the buckle 411 can be moved into the hole area of ​​the through hole 221, that is, the fixation between the boss 22 and the circular seat 30 is cancelled, and the grinding disc 20 can be directly removed. On the contrary, when the connecting rod 41 moves toward the groove wall of the central groove 31, the connecting rod 41 can be moved into the groove 2211 at the edge of the through hole 221 on the boss 22, and the buckle 411 is engaged with the lower end surface of the boss 22, limiting the circumferential movement and circumferential rotation of the boss 22 relative to the circular seat 30, that is, the installation and fixation of the grinding disc 20 is quickly completed. It should be noted that due to the presence of the spring 50, the elastic force provided can force the connecting rod 41 and the buckle 411 to effectively clamp the boss 22 and will not be easily loosened.

[0021] Combination Figure 2-6 As shown, a rotating rod 60 is rotatably arranged at the center of the bottom of the central groove 31, and the length direction of the rotating rod 60 is arranged in the direction of the axis of the circular seat 30. The rotating rod 60 is connected to the connecting rod 41 by a pull rope 61, and a torsion bar 611 is arranged at one end of the rotating rod 60 away from the central groove 31. The rotating rod 60 can be rotated by twisting the torsion bar 611, and the pull rope 61 can be wound around the rod body of the rotating rod 60, so as to retract and release the pull rope 61, and further, the connected mechanism formed by the connection of the connecting rod 41 and the sliding rod 40 can be pulled to move in the radial direction of the circular seat 30, so as to quickly control the clamping or separation of the buckle 411 on the boss 22 of the grinding disc 20.

[0022] like Figure 1 As shown, considering that the rust removal operation will generate large dust pollution, the hand-held part 70 is composed of a long connecting rod extending obliquely upward from the polishing mechanism 10. This can avoid close contact between the human body and the dust, ensuring the physical and mental health of the human body.

[0023] The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A polishing device for a steel structure component, comprising a polishing mechanism (10) and a handheld part (70) connected to the polishing mechanism (10), wherein the polishing mechanism (10) comprises a mounting seat (11), a grinding disc (20) driven to rotate by a motor (12) is arranged below the mounting seat (11), and the grinding disc (20) and the motor (12) are arranged coaxially, characterized in that: The output shaft end of the motor (12) is connected to a circular seat (30), the grinding disc (20) is located on a side of the circular seat (30) opposite to the motor (12), a through hole (221) is opened at the center of a boss (22) located in the middle of the grinding disc (20) and protruding toward the circular seat (30), and a buckling mechanism located on the circular seat (30) is inserted into the through hole (221) and is located in a limiting position for limiting the axial movement and circumferential rotation of the boss (22) or in an avoidance position separated from the boss (22).

2. The polishing device for steel structure parts according to claim 1, characterized in that: The buckle mechanism comprises a connecting rod (41) arranged along the axis direction of the circular seat (30) in the rod length direction. The connecting rod (41) extends from the circular seat (30) to the boss (22) and has a buckle (411) at its cantilevered end. The buckle (411) is buckled on the end surface of the boss (22) away from the circular seat (30). The connecting rod (41) and the buckle (411) are in a limiting position for limiting the axial movement and circumferential rotation of the boss (22) or in an avoidance position for separating from the boss (22).

3. The polishing device for steel structure parts according to claim 2, characterized in that: A slot (2211) is provided along the hole edge of the through hole (221) and is arranged radially along the boss (22). The rod body at the overlapped portion of the connecting rod (41) and the boss (22) is located in the slot (2211) or together with the buckle (411) is located in an avoidance position separated from the slot (2211).

4. The polishing device for steel structure parts according to claim 2 or 3, characterized in that: A center groove (31) is provided at the center of the end surface of the circular seat (30) close to the boss (22), and sliding grooves (311) are arranged at equal intervals on the circumference of the groove wall of the center groove (31). The groove length direction of the sliding groove (311) is arranged along the radial direction of the circular seat (30). The sliding rod (40) is inserted into the sliding groove (311) to form a guide limit fit. One end of the connecting rod (41) away from the buckle (411) is connected to one end of the sliding rod (40) close to the center groove (31), and the other end of the sliding rod (40) is connected to the opposite side of the sliding groove (311) through a spring (50). The sliding rod (40) moves along the radial direction of the circular seat (30) to realize the buckle (411) and the boss (22) The clamping or separation.

5. The polishing device for steel structure parts according to claim 4, characterized in that: A rotating rod (60) is rotatably arranged at the center of the bottom of the central groove (31), the length direction of the rotating rod (60) is arranged in the direction of the axis of the circular seat (30), the rotating rod (60) is connected to the connecting rod (41) by a pull rope (61), and a torsion rod (611) is arranged at one end of the rotating rod (60) away from the central groove (31).

6. The polishing device for steel structure parts according to claim 1, characterized in that: The hand-held part (70) is composed of a long connecting rod extending obliquely upward from the polishing mechanism (10).

Images