Rust removal device for outer side of rectangular pipe

Abstract

The utility model provides a rust removal device for the outer side of a rectangular pipe. The rust removal device for the outer side of the rectangular pipe comprises a walking frame, a connecting arm, a polishing assembly, a supporting rod and an elastic piece. According to the rust removal device for the outer side of the rectangular pipe, the walking frame is arranged, the connecting arm is hinged to the top of the walking frame, and the middle of the connecting arm is hinged to the walking frame. A grinding assembly is fixedly installed at the working end of the connecting arm, a supporting rod is arranged below the supporting end of the connecting arm, the supporting rod is arranged on the walking frame in a sliding mode in the vertical direction, and an elastic piece used for pushing the supporting rod to move upwards is further installed on the walking frame. The connecting arm can be pushed upwards to swing through the elastic piece and the supporting rod, so that the grinding assembly can make contact with the rectangular pipe all the time, after a polishing disc on the grinding assembly is abraded, the polishing disc on the grinding assembly can still abut against the outer side face of the rectangular pipe all the time, certain extrusion force is kept, and the effective polishing effect is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of rust removal devices, specifically relating to a rust removal device for the outer side of a rectangular tube. Background Technology

[0002] Square steel pipes are commonly used construction materials. However, after prolonged storage, rust easily forms on their surface, affecting their future use. Therefore, rust removal treatment is necessary before use. To reduce labor costs, current rust removal equipment typically uses a manual trolley. This involves mounting a trolley onto the steel pipe and installing a polishing disc for removing rust. The trolley is moved to remove rust from the outer surface of the pipe. To ensure stability during movement, support wheels are installed on the trolley to support the top of the square steel pipe. This ensures the stability of the polishing disc during operation. However, after a period of use, the polishing disc may wear down, causing it to become less effective at polishing the steel pipe, thus affecting the polishing effect. Utility Model Content

[0003] This utility model provides a rust removal device for the outer side of a rectangular tube, which aims to solve the problem that the rust removal device for square steel pipes in the prior art is easily affected by the wear of the polishing disc during use, thus affecting the polishing effect.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a rust removal device for the outer side of a rectangular tube, comprising:

[0005] A traveling frame, used to be mounted on a rectangular tube and move along the length of the rectangular tube;

[0006] A connecting arm is hinged in the middle to the walking frame, and the two ends of the connecting arm are the working end and the support end, respectively.

[0007] A grinding assembly, installed on the working end, is used to grind the rust on the outside of the rectangular tube;

[0008] A support rod is slidably mounted on the walking frame in a vertical direction, with the top end of the support rod abutting against the bottom of the support end;

[0009] An overlapping member is threadedly connected to the support rod, and the overlapping member overlaps the top of the traveling frame. In one possible implementation, a support sleeve is fixedly installed on the traveling frame, the support rod is slidably disposed inside the support sleeve, and the bottom end of the support sleeve is rotatably provided with a support wheel for abutting against the outside of the rectangular tube.

[0010] In one possible implementation, the top of the support rod is rotatably provided with a guide wheel that is rolled on the support end, and the end of the support end is bent to provide a limiting plate for preventing the guide wheel from disengaging from the support end.

[0011] In one possible implementation, the walking frame includes a frame body and a movable block mounted on the frame body. The movable block has a degree of freedom to adjust its position on the frame body along the axis of the hinge shaft on the connecting arm, and the connecting arm is hinged to the movable block.

[0012] In one possible implementation, the frame is provided with a fixing component for fixing the movable block to the frame, the fixing component comprising:

[0013] A fixing element is provided, which penetrates the frame and the movable block; the frame is provided with a runway hole for avoiding the fixing element.

[0014] Fasteners, threadedly connected to the fixing member, are used to secure the movable block to the frame.

[0015] In one possible implementation, a handle is fixedly mounted on the movable block, and the handle is tilted upward toward the support end.

[0016] In one possible implementation, the walking frame includes two parallel side plates spaced apart, with anti-rotation rods arranged on the side plates in a direction perpendicular to the side plates, and a rolling wheel rotatably mounted at the top of the anti-rotation rod for rolling a rectangular tube disposed on the outside of the tube.

[0017] In one possible implementation, the anti-rotation rod is slidably disposed on the side plate in a direction perpendicular to the side plate, and a limiting member is threadedly connected to the anti-rotation rod, the limiting member abutting against the inner wall of the side plate.

[0018] In one possible implementation, a pusher is further provided between the anti-rotation rod and the side plate for pushing the anti-rotation rod to move outward.

[0019] The solution shown in this application embodiment, compared with the prior art, features a walking frame with a connecting arm hinged to its top and hinged to its middle section. The working end and support end of the connecting arm are located on opposite sides of the walking frame. A grinding component is fixedly installed at the working end of the connecting arm, and a support rod is positioned below the support end of the connecting arm. The support rod slides vertically on the walking frame, and an elastic element is installed on the walking frame to push the support rod upward. The elastic element and support rod allow the connecting arm to swing upward, ensuring the grinding component remains in contact with the rectangular tube. After the polishing disc on the grinding component wears down, the support rod pushes the connecting arm to swing, ensuring the polishing disc on the grinding component always rests against the outer surface of the rectangular tube and maintains a certain pressure, guaranteeing effective polishing. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of the rectangular tube outer rust removal device provided in this embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the installation structure of the support rod provided in an embodiment of this utility model;

[0022] Figure 3 A schematic diagram of the installation structure of the anti-rotation rod provided in an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Walking frame; 11. Frame body; 12. Moving block; 13. Side plate; 2. Connecting arm; 21. Limiting plate; 3. Grinding assembly; 4. Support rod; 41. Guide wheel; 5. Overlapping piece; 6. Support sleeve; 61. Support wheel; 7. Fixing assembly; 71. Fixing piece; 72. Fastener; 8. Handle; 9. Anti-rotation rod; 91. Rolling wheel; 92. Limiting piece; 93. Pushing piece. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Please refer to the following: Figures 1 to 3The present invention provides a rust removal device for the outer side of a rectangular tube. The rust removal device includes a traveling frame 1, a connecting arm 2, a grinding assembly 3, a support rod 4, and an elastic element. The traveling frame 1 is mounted on the rectangular tube and moves along its length. The connecting arm 2 is hinged to the traveling frame 1 at its middle, with its two ends being a working end and a supporting end, respectively. The grinding assembly 3 is mounted on the working end and used to grind the rust on the outer side of the rectangular tube. The support rod 4 is slidably mounted on the traveling frame 1 in a vertical direction, with its top end abutting against the bottom of the supporting end. An overlapping member 5 is threadedly connected to the support rod 4 and overlaps the top of the traveling frame 1.

[0027] The rectangular tube rust removal device provided in this embodiment, compared with the prior art, features a traveling frame 1 with a connecting arm 2 hinged to its top and hinged to its middle section. The working end and support end of the connecting arm 2 are located on opposite sides of the traveling frame 1. A grinding component 3 is fixedly installed at the working end of the connecting arm 2, and a support rod 4 is positioned below the support end of the connecting arm 2. The support rod 4 slides vertically on the traveling frame 1 and is threadedly connected to a connecting member 5. The connecting member 5 limits the height of the support rod 4, thereby limiting the rotation angle of the connecting arm 2. This ensures that the grinding component 3 remains in contact with the rectangular tube. After the polishing disc on the grinding component 3 wears down, adjusting the position of the connecting member 5 on the support rod 4 pushes the connecting arm 2 to swing, ensuring that the polishing disc on the grinding component 3 always rests against the outer surface of the rectangular tube and maintains a certain pressure, guaranteeing effective polishing.

[0028] Specifically, in this embodiment, the polishing component 3 is a motor or angle grinder fixedly installed on the working end, and a polishing disc installed on the drive end of the motor or angle grinder. The polishing disc is a wire brush.

[0029] In some embodiments, the aforementioned walking frame 1 may adopt the following... Figure 2 The structure shown. See also Figure 2 A support sleeve 6 is fixedly installed on the walking frame 1. A support rod 4 is slidably disposed inside the support sleeve 6, and a support wheel 61 is rotatably disposed at the bottom end of the support sleeve 6 to abut against the outside of the rectangular tube. The support sleeve 6 is fixedly installed on the walking frame 1, extends downward, and a support wheel 61 is rotatably disposed at the bottom of the support sleeve 6. In use, the support wheel 61 can be supported on the rectangular tube, and the grinding assembly 3 can always abut against the surface of the rectangular tube by the push rod of the support rod 4, which can ensure the stability of the walking frame 1 during movement.

[0030] Specifically, in this embodiment, a mounting hole for mounting the support rod 4 is provided at the top of the support sleeve 6. The support rod 4 is slidably disposed inside the mounting hole, and the overlapping member 5 overlaps the top of the mounting hole. The support rod 4 is limited by the support end on the connecting arm 2 to prevent the support rod 4 from sliding out of the support sleeve 6.

[0031] In some embodiments, the support rod 4 may be adopted as follows: Figure 2 The structure shown. See also Figure 2 The top of the support rod 4 is rotatably equipped with a guide wheel 41 that is rolled on the support end. A limiting plate 21 is bent at the end of the support end to prevent the guide wheel 41 from detaching from the support end. The guide wheel 41 is rotatably mounted on the top of the support rod 4. When the support rod 4 pushes the support end upwards, the guide wheel 41 rolls on the bottom of the support end, facilitating relative movement between the support rod 4 and the support end. After the support rod 4 moves upwards a certain distance, the guide wheel 41 abuts against the limiting plate 21, limiting further upward movement of the support rod 4 and preventing it from slipping out of the support sleeve 6.

[0032] Preferably, in this embodiment, a guide hole for mounting the support rod 4 is provided on the support sleeve 6. The support rod 4 is slidably disposed inside the guide hole. Two parallel planes are provided on the outer side of the support rod 4 at intervals. A guide surface that slides with the two planes is provided on the inner wall of the guide hole. This prevents the support rod 4 from rotating along the axis of the support sleeve 6 inside the support sleeve 6.

[0033] In some embodiments, the aforementioned walking frame 1 may adopt the following... Figure 1 , Figure 2 The structure shown. See also... Figure 1 , Figure 2 The traveling frame 1 includes a frame body 11 and a movable block 12 mounted on the frame body 11. The movable block 12 has the freedom to adjust its position on the frame body 11 along the axis of the hinge shaft on the connecting arm 2. The connecting arm 2 is hinged to the movable block 12. The frame body 11 is used to mount the rectangular tube to be ground on the outside. When the frame body 11 is mounted on the rectangular tube, the movable block 12 can be adjusted in position along the width of the rectangular tube. The connecting arm 2 is mounted on the movable block 12 and will change position with the movable block 12. Therefore, when the rectangular tube is wide, the position of the movable block 12 can be adjusted to accommodate rectangular tubes of different widths for grinding.

[0034] In some embodiments, the fixing component 7 described above may be as follows: Figure 1 , Figure 2 The structure shown. See also... Figure 1 , Figure 2The frame 11 is provided with a fixing assembly 7 for fixing the movable block 12 to the frame 11. The fixing assembly 7 includes a fixing member 71 and a fastener 72. The fixing member 71 passes through the frame 11 and the movable block 12. The frame 11 has a runway hole to avoid the fixing member 71. The fastener 72 is threaded to the fixing member 71 and is used to fix the movable block 12 to the frame 11. A runway hole is provided at the top of the frame 11. When the frame 11 is installed on a rectangular tube, the length direction of the runway hole is along the width direction of the rectangular tube. The movable block 12 has a through hole for installing the fixing member 71. The fixing member 71 is a bolt, and the fastener 72 is a nut. At least two fixing members 71 are installed on the movable block 12. After the position of the movable block 12 is adjusted, the movable block 12 can be fixed to the frame 11 by the fixing member 71 and the fastener 72.

[0035] Preferably, in this embodiment, the fastener 72 is located on top of the movable block 12, which makes it convenient for the operator to adjust the fastener 72, and the operation is convenient and easy to tighten and loosen the fastener 72.

[0036] In some embodiments, the moving block 12 may employ, as follows: Figure 1 The structure shown. See also Figure 1 A handle 8 is fixedly installed on the movable block 12, and the handle 8 is tilted upwards towards the support end. The handle 8 is located on the side of the connecting arm 2 near the support end, allowing the operator to push the traveling frame 1 along the rectangular tube using the handle 8. Simultaneously, the operator can press down on the handle 8 to keep the support wheel 61 at the bottom of the support sleeve 6 rolling on the top surface of the rectangular tube, ensuring the stability of the traveling frame 1 during rust removal and thus maintaining effective rust removal.

[0037] In some embodiments, the aforementioned walking frame 1 may adopt the following... Figure 1 , Figure 3 The structure shown. See also... Figure 1 , Figure 3 The traveling frame 1 includes two parallel side plates 13 spaced apart. Anti-rotation rods 9 are arranged on the side plates 13 in a direction perpendicular to the side plates 13. A rolling wheel 91, rotatably mounted on the top of the anti-rotation rod 9, is mounted on the outside of a rectangular tube. The traveling frame 1 also includes two parallel side plates 13 spaced apart. When the traveling frame 1 is installed on the rectangular tube, the two side plates 13 are positioned on opposite sides of the rectangular tube. A mounting sleeve for mounting the anti-rotation rod 9 is fixedly installed on each side plate 13. The mounting sleeve has a mounting hole for mounting the anti-rotation rod 9, and an anti-rotation edge is provided on the inner wall of the mounting hole. An anti-rotation surface that slides with the anti-rotation edge is provided on the side wall of the anti-rotation rod 9, thereby preventing the anti-rotation rod 9 from rotating inside the mounting sleeve. This ensures that the axis of the rolling wheel 91 is always vertical, guaranteeing the stability of the traveling frame 1 during movement.

[0038] In some embodiments, the anti-rotation bar 9 may be adopted as follows: Figure 1 , Figure 3 The structure shown. See also... Figure 1 , Figure 3 The anti-rotation rod 9 is slidably mounted on the side plate 13 in a direction perpendicular to the side plate 13, and a limiting member 92 is threadedly connected to the anti-rotation rod 9. The limiting member 92 can abut against the inner wall of the side plate 13. The outer side of the anti-rotation rod 9 is also threadedly connected to the limiting member 92, which is a nut. The limiting member 92 can abut against the inner wall of the side plate 13, thereby ensuring that the rolling wheel 91 always abuts against the outer wall of the rectangular tube. In use, the walking frame 1 can be placed on the rectangular tube first, and then the position of the limiting member 92 can be adjusted so that the rolling wheel 91 on the anti-rotation rod 9 abuts against the side wall of the rectangular tube, thereby ensuring the stability of the walking frame 1 during its movement on the rectangular tube.

[0039] In some embodiments, the anti-rotation bar 9 may be adopted as follows: Figure 3 The structure shown. See also Figure 3 A pusher 93 is also provided between the anti-rotation rod 9 and the side plate 13 to push the anti-rotation rod 9 outward. The pusher 93 is a spring. A limiting platform for mounting the pusher 93 is provided at one end of the anti-rotation rod 9 on the outside of the side plate 13. One end of the pusher 93 abuts against the limiting platform, and the other end abuts against the outer wall of the side plate 13. The pusher 93 pushes the limiting member 92 to always abut against the inner wall of the side plate 13, reducing the swaying of the anti-rotation rod 9 on the side plate 13 and improving the stability of the relative position of the rolling wheel 91 and the rectangular tube during the movement of the walking frame 1. At the same time, the pusher 93 facilitates the adjustment of the position of the anti-rotation rod 9 on the side plate 13. The pusher 93 can always drive the anti-rotation rod 9 to move outward. When the limiting member 92 is adjusted so that the rolling wheel 91 abuts against the side wall of the rectangular tube, the position of the anti-rotation rod 9 is adjusted, which is convenient for observation and adjustment.

[0040] Preferably, in this embodiment, a disc is provided on the side of the limiting member 92 near the side plate 13 to increase the contact area with the side plate 13. The disc is attached to the inner wall of the side plate 13 to increase the contact area between the limiting member 92 and the side plate 13, thereby further improving the stability of the relative position between the side plate 13 and the anti-rotation rod 9.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 the outer side of a rectangular tube, characterized in that, include: The traveling frame (1) is used to be mounted on the rectangular tube and move along the length of the rectangular tube; The connecting arm (2) is hinged in the middle on the walking frame (1), and the two ends of the connecting arm (2) are the working end and the support end, respectively. Grinding assembly (3), installed on the working end, is used to grind the rust on the outside of the rectangular tube; The support rod (4) is slidably mounted on the walking frame (1) in the vertical direction, and the top end of the support rod (4) abuts against the bottom of the support end; The overlapping member (5) is threadedly connected to the support rod (4) and overlaps the top of the walking frame (1).

2. The rust removal device for the outer side of a rectangular tube as described in claim 1, characterized in that, A support sleeve (6) is fixedly installed on the walking frame (1), and the support rod (4) is slidably disposed inside the support sleeve (6). The bottom end of the support sleeve (6) is rotatably provided with a support wheel (61) for abutting against the outside of the rectangular tube.

3. The rust removal device for the outer side of a rectangular tube as described in claim 1, characterized in that, The top of the support rod (4) is rotatably provided with a guide wheel (41) that is rolled on the support end, and the end of the support end is bent and provided with a limiting plate (21) to prevent the guide wheel (41) from disengaging from the support end.

4. The rust removal device for the outer side of a rectangular tube as described in claim 2, characterized in that, The walking frame (1) includes a frame (11) and a movable block (12) mounted on the frame (11). The movable block (12) has a degree of freedom to be adjusted along the axis of the hinge on the connecting arm (2) at the position on the frame (11). The connecting arm (2) is hinged to the movable block (12).

5. The rust removal device for the outer side of a rectangular tube as described in claim 4, characterized in that, The frame (11) is provided with a fixing component (7) for fixing the movable block (12) to the frame (11), the fixing component (7) comprising: A fixing member (71) is provided through the frame (11) and the moving block (12), and the frame (11) is provided with a runway hole for avoiding the fixing member (71); Fastener (72), threadedly connected to the fixing member (71), is used to fix the movable block (12) to the frame (11).

6. The rust removal device for the outer side of a rectangular tube as described in claim 4, characterized in that, A handle (8) is fixedly installed on the movable block (12), and the handle (8) is inclined upward towards the support end.

7. The rust removal device for the outer side of a rectangular tube as described in claim 1, characterized in that, The walking frame (1) includes two parallel side plates (13) spaced apart. An anti-rotation rod (9) is provided on the side plate (13) in a direction perpendicular to the side plate (13). The top of the anti-rotation rod (9) is rotatably provided with a rolling wheel (91) for rolling on the outside of the rectangular tube.

8. The rust removal device for the outer side of a rectangular tube as described in claim 7, characterized in that, The anti-rotation rod (9) is slidably disposed on the side plate (13) in a direction perpendicular to the side plate (13), and a limiting member (92) is threadedly connected to the anti-rotation rod (9), and the limiting member (92) can abut against the inner wall of the side plate (13).

9. The rust removal device for the outer side of a rectangular tube as described in claim 8, characterized in that, A pusher (93) for pushing the anti-rotation rod (9) to move outward is also provided between the anti-rotation rod (9) and the side plate (13).

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