Steel structure rust removal device

Abstract

The utility model discloses a steel structure rust removal device, relates to the field of polishing and rust removal, and aims to solve the problems that existing rust removal equipment is poor in space adaptability and operation stability, the operation distance is too short in the using process, and potential safety hazards are caused to a user. A rotating main shaft is rotationally connected to the front end of the machine body, a protective shell is rotationally connected to the lower portion of the rotating main shaft, the protective shell is fixedly connected with the machine body, the protective shell is rotationally connected with two sets of symmetrically-distributed driven shafts, a transmission assembly is installed between the two sets of driven shafts and the rotating main shaft, and the two sets of driven shafts are provided with grinding pieces. The polishing device has the advantages that through the handheld component and the protective shell, the polishing device is more attached to a to-be-polished part in the using process, meanwhile, workers can conveniently use the polishing device, and using safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of grinding and rust removal technology, and in particular to a rust removal device for steel structures. Background Technology

[0002] In the field of steel structure manufacturing and maintenance, channel steel is widely used as an important load-bearing component in construction, machinery manufacturing, and bridge engineering. Due to the special U-shaped cross-section structure of channel steel, its grooved areas are highly susceptible to the formation of a dense rust layer due to environmental humidity and oxidation during long-term storage. Untreated rusted channel steel can reduce its cross-sectional strength by 30%-50%, directly affecting the safety of the engineering structure. Therefore, thoroughly removing rust from the grooved areas of the channel steel before use is a necessary procedure to ensure project quality.

[0003] For rust removal of channel steel (especially the inner surface of its grooves), the industry generally relies on workers using small handheld angle grinders or straight-handle grinders. The typical operation involves workers wearing protective gear and holding a straight-handle grinder weighing approximately 2-3 kg, reciprocating the grinding within a U-shaped groove 15-30 mm wide and 50-80 mm deep. To complete the grinding of the entire inner surface of the groove, workers must frequently move the grinder left and right. This high-frequency movement increases the probability of the equipment colliding with the channel steel wall. The resulting reaction force causes the grinder to vibrate radially, impacting the worker's hands. In severe cases, this can lead to the equipment slipping from their hands and hand fractures.

[0004] Furthermore, due to the limited length of standard handheld grinders, workers are forced to maintain a prolonged, heavily bent-over posture to precisely insert the grinding head into and fit deep into the grooves. This bending-over operation significantly reduces the distance between the worker's body (especially the head, face, and arms) and the high-speed rotating grinding head and grinding area. The flying hot metal shavings, detached abrasive particles, and diffused dust (containing potential heavy metals and silica hazards) pose serious close-range risks to the worker's eyes, respiratory system, and exposed skin. Even with protective equipment, this close proximity greatly reduces the effectiveness of protection, highlighting significant safety hazards. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a steel structure rust removal device. This design effectively solves the problems of poor space adaptability and operational stability of existing rust removal equipment, as well as the safety hazards to users caused by the excessively close operating distance during use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes a body, a handheld component fixedly connected to the body, a rotating spindle rotatably connected to the front end of the body, a protective shell rotatably connected below the rotating spindle, the protective shell being fixedly connected to the body, and two sets of symmetrically distributed driven shafts rotatably connected to the protective shell. A transmission assembly is installed between the two sets of driven shafts and the rotating spindle. The two sets of driven shafts are provided with grinding discs, which are fixed to the driven shafts by pressure flanges, and the diameter of the grinding discs is smaller than the distance between the two driven shafts.

[0007] Preferably, the handheld component includes a rod body with a support rod hinged to it. The other end of the support rod is hinged to the head of the device body, and a fixing clip is connected to the lower end of the rod body. The fixing clip is fixedly connected to the middle part of the device body.

[0008] Preferably, the fixing clamp includes a first clamping block and a second clamping block. Both the first clamping block and the second clamping block have arc-shaped grooves inside. The first clamping block and the second clamping block are fitted with locking bolts. The first clamping block and the second clamping block are hinged together on the outside. The connecting block is fixedly connected to the rod body.

[0009] Preferably, the transmission assembly includes a drive gear, which is fixedly connected to the rotating main shaft, and driven gears meshing on both sides of the drive gear, with the driven gears fixedly connected to the driven shaft.

[0010] Preferably, a pad is provided on the upper part of the protective shell, the pad is fixedly connected to the body, the pad is provided with a plurality of threaded holes arranged in a circle, the protective shell is provided with a countersunk hole, a countersunk bolt is rotatably connected in the countersunk hole, and the countersunk bolt is fixedly connected to the threaded hole.

[0011] Compared with the prior art, the outstanding advantages of this utility model are:

[0012] In this application, two driven shafts are added to both sides of the rotating spindle, and grinding discs are installed on both driven shafts. By working synchronously with the two grinding discs, the contact grinding area of ​​the device is increased, and the grinding efficiency is improved. In addition, the angle of the protective shell is adjustable, so that the device can be adapted to the width of the steel groove during use.

[0013] This application adds a handheld component to the machine body, extending the handheld position of the device to prevent workers from bending over while using it, and at the same time increasing the distance between the worker and the machine body to ensure their personal safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2This is a schematic diagram of the fixing clip structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the bottom structure of the protective shell of this utility model.

[0017] Figure 4 This is an exploded structural diagram of the protective shell and gasket of this utility model.

[0018] Figure 5 This is a schematic cross-sectional view of the protective shell of this utility model.

[0019] The following are the labeling elements in the diagram: 1. Body; 2. Handheld component; 201. Rod; 202. Support rod; 203. Fixing clamp; 2031. First clamping block; 2032. Second clamping block; 2033. Groove; 2034. Locking bolt; 2035. Connecting block; 3. Rotating spindle; 4. Protective shell; 5. Driven shaft; 6. Transmission assembly; 601. Drive gear; 602. Driven gear; 7. Shim; 8. Threaded hole; 9. Countersunk hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see the appendix Figure 1-5 This embodiment discloses a steel structure rust removal device, comprising a body 1, a handheld component 2 fixedly connected to the body 1, a rotating spindle 3 rotatably connected to the front end of the body 1, a protective shell 4 rotatably connected below the rotating spindle 3, the protective shell 4 being fixedly connected to the body 1, and two sets of symmetrically distributed driven shafts 5 rotatably connected to the protective shell 4. A transmission assembly 6 is installed between the two sets of driven shafts 5 and the rotating spindle 3. The two sets of driven shafts 5 are provided with grinding discs, which are fixed to the driven shafts 5 by pressure flanges, and the diameter of the grinding discs is smaller than the distance between the two driven shafts 5.

[0022] The main body 1 has a columnar structure. Inside the main body 1 are a motor and a controller. The rotating spindle 3 is located at the lower end of the head of the main body 1 and is perpendicular to the main body 1 at a 90-degree angle. The tail end of the main body 1 is connected to an external power cord. The handheld part 2 is fixed to the main body 1 by a fixing clip 203 and a steel hoop. When the device is working, the rotating spindle 3 at the front end of the main body 1 drives two driven shafts 5 to rotate synchronously. The two driven shafts 5 are synchronously installed in the protective shell 4. The protective shell 4 has a key-shaped structure and two storage slots on the ground. The two storage slots are used to place and install grinding discs. The diameter of the grinding disc is smaller than the center distance between the two driven shafts 5, so as to ensure that the two grinding discs will not interfere with each other when working. The two driven shafts 5 have a prismatic structure. The grinding discs on the driven shafts 5 are fixed by a pressure flange, which facilitates the subsequent disassembly and replacement of the grinding discs.

[0023] Furthermore, the handheld component 2 consists of three parts: a rod 201, a fixing clip 203, and a support rod 202. The front end of the rod 201 is bent, and its material is hollow stainless steel, which reduces the weight of the rod 201 and ensures good rigidity support. The support rod 202 is hinged to the front side of the rod 201, and the other end of the support rod 202 is hinged to the head of the machine body 1. The rod 201 is fixed to the middle of the machine body 1 by the fixing clip 203. The support rod 202, the machine body 1, and the rod 201 form a triangle, making the rod 201 more firmly fixed. At the same time, when the user applies force to the rod 201, the support rod 202 can exert a downward force on the head of the machine body 1, preventing the grinding disc below the head of the machine body 1 from jumping radially during grinding, making the device more stable during overall operation. The lengthening of the rod 201 avoids the worker from working in a bent-over position, and at the same time, it allows the worker to maintain a certain distance from the machine body 1, ensuring the worker's safety during construction.

[0024] The first clamping block 2031 and the second clamping block 2032 inside the fixing clamp 203 have the same structure and are radially distributed. The groove 2033 inside the first clamping block 2031 and the second clamping block 2032 has an arc-shaped structure, and the connecting block 2035 has an n-shaped structure. The two ends of the connecting block 2035 are respectively hinged to the middle of the first clamping block 2031 and the second clamping block 2032. Through the rotational connection of the connecting block 2035, under the premise that the length of the support rod 202 remains fixed, the first clamping block 2031 and the second clamping block 2032 are clamped at different positions on the body 1, which can adjust the tilt angle of the rod 201 relative to the body 1, so that the tilt angle of the rod 201 has the ability to be flexibly adjusted, making it more suitable for the needs of the usage scenario. The first clamping block 2031 and the second clamping block 2032 are connected by the locking bolt 2034. Depending on the usage scenario, a spring washer can be added to the locking bolt 2034 to ensure its fixation stability.

[0025] The transmission assembly 6 between the rotating main shaft 3 and the two driven shafts 5 consists of a driving gear 601 and two driven gears 602. The two driven gears 602 are fixedly connected to the two driven shafts 5 respectively, and the driving gear 601 is fixedly connected to the rotating main shaft 3. The two driven gears 602 mesh on the left and right sides of the driving gear 601 respectively. In this way, when the driving gear 601 rotates, it drives the two driven gears 602 to rotate synchronously. The two driven gears 602 drive the driven shafts 5 to rotate. Both the driven gears 602 and the driving gear 601 are located in the inner cavity of the protective shell 4.

[0026] Furthermore, to improve the applicability of the device to channel steel of different widths, the angle of the protective shell 4 in this application can be adjusted, and a pad is installed between the protective shell 4 and the body 1. The pad has a cylindrical structure. Figure 4 As shown, the center of the pad has a through hole for the rotating spindle 3 to pass through. A ring of threaded holes 8 are arranged around the pad around the through hole. The protective shell 4 is fixed by the cooperation of the countersunk bolts and the threaded holes 8. When the protective shell 4 is laid horizontally, the two grinding discs are in the same position, and the grinding width is the widest at this time. When the angle of the protective shell 4 is rotated, the two grinding discs are in a front-back position, and the grinding width of the two grinding discs becomes narrower. This device is well-suited for channel steel of different widths. The hole on the protective shell 4 is a countersunk hole 9, and the countersunk bolt is located in the countersunk hole 9, which can prevent the bolt head from protruding outside the protective shell 4.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rust removal device for steel structures, characterized in that: Includes a body (1), on which a handheld component (2) is fixedly connected, and a rotating spindle (3) is rotatably connected to the front end of the body (1). A protective shell (4) is rotatably connected below the rotating spindle (3). The protective shell (4) is fixedly connected to the body (1). Two sets of symmetrically distributed driven shafts (5) are rotatably connected to the protective shell (4). A transmission assembly (6) is installed between the two sets of driven shafts (5) and the rotating spindle (3). The two sets of driven shafts (5) are provided with grinding discs. The grinding discs are fixed on the driven shafts (5) by a pressure flange, and the diameter of the grinding discs is smaller than the distance between the two driven shafts (5).

2. The steel structure rust removal device according to claim 1, characterized in that: The handheld component (2) includes a rod (201), on which a support rod (202) is hinged. The other end of the support rod (202) is hinged to the head of the body (1). A fixing clip (203) is connected to the lower end of the rod (201), and the fixing clip (203) is fixedly connected to the middle part of the body (1).

3. The steel structure rust removal device according to claim 2, characterized in that: The fixing clamp (203) includes a first clamping block (2031) and a second clamping block (2032). Both the first clamping block (2031) and the second clamping block (2032) have arc-shaped grooves (2033) inside. The first clamping block (2031) and the second clamping block (2032) are fitted with locking bolts (2034). The first clamping block (2031) and the second clamping block (2032) are hinged together on the outside of the same part. The connecting block (2035) is fixedly connected to the rod body (201).

4. The steel structure rust removal device according to claim 1, characterized in that: The transmission assembly (6) includes a drive gear (601), which is fixedly connected to the rotating main shaft. Driven gears (602) mesh on both sides of the drive gear (601), and the driven gears (602) are fixedly connected to the driven shaft (5).

5. A steel structure rust removal device according to claim 1, characterized in that: A pad is provided on the top of the protective shell (4). The pad is fixedly connected to the body (1). The pad is provided with a plurality of threaded holes (8) arranged in a circle. The protective shell (4) is provided with countersunk holes (9). A countersunk bolt is rotatably connected in the countersunk hole (9). The countersunk bolt is fixedly connected to the threaded hole (8).

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