Welding seam polishing device for pipeline

Abstract

The utility model relates to a weld joint polishing device for a pipeline, which belongs to the technical field of weld joint polishing tools and comprises a circularly rotating abrasive belt arranged on the outer ring of a support bow in a surrounding manner; a tensioning device is arranged on the supporting bow, the abrasive belt is tensioned on the supporting bow through the tensioning device, and a motor used for driving the abrasive belt is arranged on the supporting bow. According to the utility model, the supporting bow is matched with the flexible abrasive belt, so that the grinding surface is attached to the welding seam on the cambered surface of the pipeline, the operation continuity of grinding the welding seam is ensured, the grinding angle is prevented from being manually and repeatedly adjusted, the grinding efficiency is improved, and meanwhile, the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to a pipeline weld grinding device, belonging to the technical field of weld grinding tools. Background Art

[0002] After the pipeline is welded, the weld needs to be polished. At present, the most commonly used polishing method is to polish the weld manually with a handheld angle grinder. After the practice of operators, people found that the above polishing method has the following disadvantages:

[0003] The weld is on the curved surface of the pipe, while the grinding rotating surface of the grinding wheel on the angle grinder is a plane. Therefore, when the angle grinder is grinding the weld, it cannot fit the weld on the curved surface of the pipe, which leads to poor continuity in the weld grinding operation: the operator needs to constantly change posture to adjust the grinding angle of the angle grinder so that the grinding plane of the angle grinder is tangent to the curved surface where the weld is located. This slows down the grinding efficiency and increases the labor intensity and operation difficulty of the operator. Moreover, in this operation mode, the operator cannot control the grinding surface of the angle grinder to be smoothly and continuously tangent to the pipe weld, which easily leaves residual weld protrusions, resulting in incomplete weld grinding. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a pipeline weld grinding device so that the grinding surface fits the weld on the pipeline curved surface, thereby improving the grinding efficiency and reducing the labor intensity.

[0005] The utility model discloses a pipeline weld grinding device, comprising: a support bow, an outer ring of which is surrounded by a cyclically rotating abrasive belt; a tensioning device is provided on the support bow, the abrasive belt is tensioned on the support bow through the tensioning device, and a motor for driving the abrasive belt is provided on the support bow.

[0006] Furthermore, the support bow includes: a cross arm, a curved arm is slidably connected to the cross arm, a driving wheel is provided on the end of the curved arm away from the cross arm, the sanding belt is wrapped around the driving wheel, and the driving wheel is coaxially connected to the output shaft of the motor; a clamping wheel for its own positioning is threadedly connected to the curved arm.

[0007] Furthermore, a slide cylinder is provided on the cross arm, and the tensioning device is slidably connected to the slide cylinder.

[0008] Further, the tensioning device includes: an auxiliary wheel, the auxiliary wheel is rotatably connected to the sliding fork, one end of the sliding fork away from the auxiliary wheel is slidably connected to the sliding cylinder, and a spring arranged in the sliding cylinder provides elastic support for the sliding fork;

[0009] The abrasive belt overlaps in the groove of the auxiliary wheel.

[0010] Furthermore, a handle is provided on the support bow.

[0011] Furthermore, the handle includes: a support plate connected to the cross arm; and a guard ring is provided on the support plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides a support bow with a flexible abrasive belt, so that the grinding surface fits the weld on the arc surface of the pipeline, ensures the operation continuity of grinding the weld, avoids repeated manual adjustment of the grinding angle, improves the grinding efficiency and also reduces the manual labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a pipeline weld grinding device from a first perspective of the utility model;

[0015] Figure 2 This is a structural schematic diagram of a pipeline weld grinding device from a second viewing angle of the utility model;

[0016] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0017] In the figure:

[0018] 1. Support bow; 101. Driving wheel; 102. Crank arm; 103. Cross arm; 1031. Slide cylinder; 104. Clamping wheel;

[0019] 2. tensioning device; 201. auxiliary wheel; 202. sliding fork; 203. spring;

[0020] 3. handle; 301. guard ring; 302. support plate;

[0021] 4. Motor;

[0022] 5. Sanding belt. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 3 As shown, this embodiment is implemented through the following technical solutions: a circulatingly rotating sanding belt 5 is arranged around the outer ring of the support bow 1; a tensioning device 2 is provided on the support bow 1, and the sanding belt 5 is tensioned on the support bow 1 through the tensioning device 2; and a motor 4 for driving the sanding belt 5 is provided on the support bow 1.

[0024] Specifically, the support bow 1 includes: a cross arm 103, a curved arm 102 is slidably connected to the cross arm 103, a driving wheel 101 is provided on the end of the curved arm 102 away from the cross arm 103, the sanding belt 5 is wrapped around the driving wheel 101, and the driving wheel 101 is coaxially connected to the output shaft of the motor 4; a clamping wheel 104 is threadedly connected to the curved arm 102 for its own positioning.

[0025] Specifically, a slide cylinder 1031 is provided on the cross arm 103 , and the tensioning device 2 is slidably connected to the slide cylinder 1031 .

[0026] In this embodiment, a pair of curved arms 102 are provided on the cross arm 103, and the two curved arms 102 are symmetrically arranged. Figure 1 As shown, the crank arm 102 is slidably adjusted on the cross arm 103 to change the distance between the driving wheels 101 .

[0027] Specifically, the tensioning device 2 includes: an auxiliary wheel 201, the auxiliary wheel 201 is rotatably connected to a sliding fork 202, one end of the sliding fork 202 away from the auxiliary wheel 201 is slidably connected to a slide cylinder 1031, and a spring 203 arranged in the slide cylinder 1031 provides elastic support for the sliding fork 202;

[0028] The abrasive belt 5 overlaps in the groove of the auxiliary wheel 201 to prevent the abrasive belt from slipping off the auxiliary wheel 201 .

[0029] Specifically, a handle 3 is provided on the support bow 1 .

[0030] Specifically, the handle 3 includes: a support plate 302 connected to the cross arm 103; a guard ring 301 is provided on the support plate 302, and the guard ring 301 is manually held to prevent the hand from being injured by the sanding belt 5.

[0031] The specific use principle of the utility model is as follows:

[0032] The motor 4 drives the driving wheel 101 and then drives the sanding belt 5 to rotate. The handle 3 is manually held so that the part of the sanding belt 5 suspended between the curved arms 102 is attached to the weld of the pipe. Further, the support bow 1 is manually pressed through the handle 3 to make the sanding belt 5 fit the curved surface of the pipe. At this time, the sanding belt 5 fits the arc-shaped weld for grinding; when the support bow 1 is pressed, the tension of the sanding belt 5 increases, the tensioning device 2 is compressed, and the part of the sanding belt 5 originally between the tensioning devices 2 is pulled between the curved arms 102. The length of the sanding belt 5 suspended between the curved arms 102 increases so that it fits the curved surface of the pipe.

[0033] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A pipeline weld grinding device, characterized in that: include: A support bow (1) is provided with a cyclically rotating sanding belt (5) around its outer ring; a tensioning device (2) is provided on the support bow (1); the sanding belt (5) is tensioned on the support bow (1) by the tensioning device (2); and a motor (4) for driving the sanding belt (5) is provided on the support bow (1).

2. A pipeline weld grinding device according to claim 1, characterized in that: The support bow (1) comprises: a cross arm (103), a curved arm (102) being slidably connected to the cross arm (103), a driving wheel (101) being provided on one end of the curved arm (102) away from the cross arm (103), the sanding belt (5) being wrapped around the driving wheel (101), and the driving wheel (101) being coaxially connected to the output shaft of the motor (4); A clamping wheel (104) is threadedly connected to the crank arm (102) for positioning itself.

3. A pipeline weld grinding device according to claim 2, characterized in that: A slide cylinder (1031) is provided on the cross arm (103), and the tensioning device (2) is slidably connected to the slide cylinder (1031).

4. A pipeline weld grinding device according to claim 3, characterized in that: The tensioning device (2) comprises: an auxiliary wheel (201), the auxiliary wheel (201) is rotatably connected to a sliding fork (202), one end of the sliding fork (202) away from the auxiliary wheel (201) is slidably connected to a slide cylinder (1031), and a spring (203) arranged in the slide cylinder (1031) provides elastic support for the sliding fork (202); The abrasive belt (5) is overlapped in the groove of the auxiliary wheel (201).

5. A pipeline weld grinding device according to any one of claims 1 to 4, characterized in that: A handle (3) is provided on the support bow (1).

6. A pipeline weld grinding device according to claim 5, characterized in that: The handle (3) comprises: a support plate (302) connected to the cross arm (103); a guard ring (301) is provided on the support plate (302).

Images