Pipeline inner wall polishing device

Abstract

The utility model relates to the technical field of pipeline polishing, in particular to a pipeline inner wall polishing device which comprises a fixing rod, the fixing rod is provided with two sets of retractable and expandable moving structures distributed in parallel, a polishing structure is arranged between the two sets of moving structures, and each moving structure comprises a plurality of hinge seats rotationally connected with moving wheels. The grinding device further comprises a contraction and expansion mechanism for synchronously adjusting the included angle between the multiple hinge rods and the fixing rod, the multiple sets of grinding structures are arranged and arranged between the two opposite hinge seats in the two sets of moving structures, and each grinding structure comprises a U-shaped frame. The pipeline inner wall polishing device can be directly supported on the two sides of the welding position of the pipeline inner wall and rotate circumferentially along the pipeline inner wall, the welding position of the pipeline inner wall can be conveniently polished during circumferential rotation, the polishing efficiency is improved, meanwhile, the safety risk of pipeline carrying during pipeline polishing is eliminated, and meanwhile energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline grinding, in particular to a pipeline inner wall grinding device. Background Art

[0002] Pipes are generally factory-made with fixed lengths. In actual use, the lengths of pipes vary, so cutting, splicing and welding are more common. After the pipes are spliced ​​and welded into one, the outer and inner walls of the pipe welds need to be polished. For the polishing of the inner wall of the pipe, in actual use, there are manual polishing methods. The original polishing method is time-consuming and labor-intensive, and the polishing efficiency is low. There is also a separate polishing device, which places the pipe on its operating table and then rotates to polish the annular weld, or drives the pipe to rotate and then polishes the inner wall annular weld. This polishing method also requires the pipe to be moved up and down, which has safety risks. At the same time, the energy consumption of driving the pipe to rotate is high. For this reason, a pipe inner wall polishing device is designed that can be directly supported at the weld of the inner wall of the pipe, and rotates around the inner wall of the pipe, and polishes during circumferential rotation. While improving the polishing efficiency, it eliminates the safety risk of moving the pipe for pipe polishing, and reduces energy consumption. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the shortcomings of the prior art, the utility model provides a pipeline inner wall grinding device, which can be directly supported on both sides of the pipeline inner wall welding point and rotated along the pipeline inner wall. The circumferential rotation facilitates the grinding of the pipeline inner wall welding point, thereby improving the grinding efficiency, eliminating the safety risk of moving the pipeline for pipeline grinding, and reducing energy consumption.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipeline inner wall grinding device, comprising a fixed rod, the fixed rod is provided with two groups of parallel distributed retractable and expandable movable structures, a grinding structure is arranged between the two groups of movable structures, the movable structure comprises a plurality of articulated seats rotatably connected with movable wheels, the plurality of articulated seats are hinged to the fixed rod through the articulated rod, and also comprises a contraction and expansion mechanism for synchronously adjusting the angles between the plurality of articulated rods and the fixed rod, the grinding structure is arranged into a plurality of groups and is arranged at a position between two opposite articulated seats in the two groups of movable structures, the grinding structure comprises a U-shaped frame, two opposite articulated seats are connected to the U-shaped frame through a fixed bar, and a grinding mechanism is arranged on the U-shaped frame.

[0007] Preferably, the grinding mechanism includes a grinding frame slidably matched with the U-shaped frame, the grinding frame is rotatably connected to a grinding roller, the grinding frame is provided with a driving component for driving the grinding roller to rotate, and the U-shaped frame is fixedly mounted with a grinding drive cylinder for driving the grinding frame to slide inward and outward.

[0008] Preferably, the driving assembly comprises a grinding motor fixedly mounted on a grinding frame, the grinding motor is connected to the grinding roller via a sprocket chain transmission, and the grinding frame is provided with a through hole adapted to the sprocket chain.

[0009] Preferably, the contraction and expansion mechanism includes two slip rings that slide with the fixed rod, and a plurality of support rods are fixedly installed on the two slip rings. A roller is rotatably connected to the side of the support rod away from the slip ring. A movable groove that slides with the roller guide is provided on the articulated rod, and a left and right driving component that drives the two slip rings to move left and right synchronously is provided on the fixed rod.

[0010] Preferably, the left and right driving components include an embedded groove opened on the fixed rod, and two sliders are slidably fitted in the embedded groove and fixedly connected to two slip rings respectively. A screw rod is rotatably connected in the embedded groove, and the two sliders are both threadedly connected to the screw rod. A movable motor for driving the screw rod to rotate is fixedly installed on the fixed rod.

[0011] Preferably, each group of moving structures further includes a fixing ring fixedly connected to the fixing rod, and a plurality of hinged rods in each group of moving structures are hinged to the fixing ring.

[0012] Preferably, two sliding grooves are provided on the fixing rod, and the two sliding rings are respectively placed in the two sliding grooves.

[0013] Preferably, a positioning telescopic cylinder having one end fixedly connected to a turntable is installed on the fixed rod.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a pipeline inner wall grinding device, which has the following beneficial effects:

[0016] The pipeline inner wall grinding device can be integrally extended into both sides of the pipeline welding part to be ground through two retractable and expandable movable structures, and the grinding structure is located at the welding part inside the pipeline. At the same time, the retractable and expandable mechanism can prop up multiple hinged rods, so that multiple movable wheels can contact the inner wall of the pipeline. Then, by rotating the fixed rod, the multiple movable wheels can be driven to rotate, and the grinding mechanism is started at the same time. The welding part of the pipeline inner wall is ground while rotating along the inner wall of the pipeline. The pipeline inner wall grinding device can be directly propped up on both sides of the welding part of the pipeline inner wall and rotate along the inner wall of the pipeline. The welding part of the pipeline inner wall is convenient to grind during the circumferential rotation, which improves the grinding efficiency and eliminates the safety risk of carrying the pipeline for pipeline grinding, while reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model from other perspectives as a whole;

[0019] Figure 3 This is a schematic diagram of the overall structure of the utility model without a fixing rod;

[0020] Figure 4 It is a structural schematic diagram of another viewing angle of the utility model as a whole;

[0021] Figure 5 This is a schematic diagram of the structure of the support rod, the sliding ring and the sliding block of the utility model;

[0022] Figure 6 It is a partial cross-sectional structural diagram of the cooperation of the fixed rod, the positioning telescopic cylinder and the turntable of the utility model.

[0023] Markings in the attached drawings: 1. fixed rod; 2. fixed ring; 3. hinged rod; 4. moving wheel; 5. support rod; 6. roller shaft; 7. U-shaped frame; 8. fixed bar; 9. grinding drive cylinder; 10. grinding frame; 11. grinding roller; 12. grinding motor; 13. sprocket chain; 14. hinged seat; 15. slip ring; 16. slide groove; 17. screw; 18. slider; 19. moving motor; 20. positioning telescopic cylinder; 21. turntable. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example:

[0026] See also Figure 1-6 A pipeline inner wall grinding device comprises a fixed rod 1, the fixed rod 1 is provided with two groups of parallel distributed retractable and expandable moving structures, a grinding structure is arranged between the two groups of moving structures, the moving structure comprises a plurality of articulated seats 14 rotatably connected with moving wheels 4, the plurality of articulated seats 14 are hinged to the fixed rod 1 through articulated rods 3, and also comprises a contraction and expansion mechanism for synchronously adjusting the angle between the plurality of articulated rods 3 and the fixed rod 1, the grinding structure is arranged in a plurality of groups and is arranged at a position between two opposite articulated seats 14 in the two groups of moving structures, the grinding structure comprises a U-shaped frame 7, the two opposite articulated seats 14 are fixedly connected to the U-shaped frame 7 through a fixing bar 8, and a grinding mechanism is arranged on the U-shaped frame 7.

[0027] Specifically, the grinding mechanism includes a grinding frame 10 that slides with the U-shaped frame 7, a grinding roller 11 is rotatably connected to the grinding frame 10, a driving assembly for driving the grinding roller 11 to rotate is provided on the grinding frame 10, and a grinding drive cylinder 9 for driving the grinding frame 10 to slide inward and outward is fixedly installed on the U-shaped frame 7. The driving assembly can easily drive the grinding roller 11 to rotate, and the rotating grinding roller 11 can facilitate grinding the inner wall of the pipeline. The grinding drive cylinder 9 can facilitate the overall movement of the grinding frame 10, the grinding roller 11 and the driving assembly inward and outward, thereby facilitating the adjustment of the grinding depth.

[0028] Specifically, the driving assembly includes a grinding motor 12 fixedly mounted on the grinding frame 10. The grinding motor 12 is connected to the grinding roller 11 through a sprocket chain 13. The grinding frame 10 is provided with a through hole that matches the sprocket chain 13. When the grinding motor 12 is started, the grinding roller 11 is driven to rotate through the transmission cooperation of the sprocket chain 13.

[0029] Specifically, the contraction and expansion mechanism includes two slip rings 15 that are slidably matched with the fixed rod 1, and multiple support rods 5 are fixedly installed on the two slip rings 15. The side of the support rod 5 away from the slip ring 15 is rotatably connected to the roller shaft 6. The hinged rod 3 is provided with a movable groove that is guided and slidably matched with the roller shaft 6. The fixed rod 1 is provided with a left and right driving component that drives the two slip rings 15 to move left and right synchronously. The left and right driving components can facilitate the synchronous driving of the two slip rings 15 to move left and right. When the slip ring 15 moves left and right, due to the setting of the support rod 5, the roller shaft 6 and the hinged rod 3, the angle between the hinged rod 3 and the fixed rod 1 can be increased or decreased. When it increases, the movable structure can be expanded, and when the angle is reduced, the movable structure can be contracted.

[0030] Specifically, the left and right driving components include an embedded groove provided on the fixed rod 1, in which two sliders 18 are slidably fitted and fixedly connected to two slip rings 15 respectively, a screw rod 17 is rotatably connected in the embedded groove, and the two sliders 18 are both threadedly connected to the screw rod 17, and a moving motor 19 for driving the screw rod 17 to rotate is fixedly installed on the fixed rod 1. When the moving motor 19 is started, the output shaft of the moving motor 19 rotates clockwise or counterclockwise, so as to drive the screw rod 17 to rotate clockwise or counterclockwise, thereby driving the two sliders 18 to move to the left or to the right at the same time.

[0031] Specifically, each group of mobile structures also includes a fixing ring 2 fixedly connected to the fixing rod 1, and a plurality of hinged rods 3 in each group of mobile structures are hinged to the fixing ring 2. The setting of the fixing ring 2 increases the stability of the structure.

[0032] Specifically, two slide grooves 16 are provided on the fixing rod 1, and the two slip rings 15 are respectively placed in the two slide grooves 16. By providing the slide grooves 16, it is convenient to limit the slip rings 15 to avoid excessive contraction or expansion.

[0033] Specifically, a positioning telescopic cylinder 20 having one end fixedly connected to a turntable 21 is installed on the fixed rod 1. Through the cooperation of the positioning telescopic cylinder 20 and the turntable 21, the fixed rod 1 can be conveniently inserted into the pipeline, and through the turntable 21, the positioning telescopic cylinder 20 can be conveniently used to drive the fixed rod 1 to rotate.

[0034] When in use, the two sets of movable structures are retracted and then extended into the pipeline as a whole. When the grinding mechanism moves to the weld on the inner wall of the pipeline, the two sets of movable structures are propped up by the contraction and expansion mechanism until multiple movable wheels 4 are in contact with the inner wall of the pipeline. Then the grinding mechanism is started, and then the fixed rod 1 is rotated to drive the two movable structures to rotate, and at the same time drive the grinding mechanism to synchronously grind the weld on the inner wall of the pipeline.

[0035] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0036] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0037] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0038] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pipeline inner wall grinding device, characterized in that: The invention comprises a fixed rod (1), wherein the fixed rod (1) is provided with two groups of parallelly distributed retractable and expandable movable structures, a grinding structure is provided between the two groups of movable structures, the movable structure comprises a plurality of hinged seats (14) rotatably connected to movable wheels (4), the plurality of hinged seats (14) and the fixed rod (1) are hingedly connected via hinged rods (3), and a shrinkage and expansion mechanism is also provided for synchronously adjusting the angle between the plurality of hinged rods (3) and the fixed rod (1), the grinding structure is provided in a plurality of groups and is arranged at positions between two opposite hinged seats (14) in the two groups of movable structures, the grinding structure comprises a U-shaped frame (7), the two opposite hinged seats (14) are connected to the U-shaped frame (7) via fixing bars (8), and the grinding mechanism is provided on the U-shaped frame (7).

2. The pipeline inner wall grinding device according to claim 1, characterized in that: The grinding mechanism comprises a grinding frame (10) which is slidably matched with the U-shaped frame (7); a grinding roller (11) is rotatably connected to the grinding frame (10); a driving component for driving the grinding roller (11) to rotate is arranged on the grinding frame (10); and a grinding driving cylinder (9) for driving the grinding frame (10) to slide inward and outward is fixedly installed on the U-shaped frame (7).

3. The pipeline inner wall grinding device according to claim 2, characterized in that: The driving assembly comprises a grinding motor (12) fixedly mounted on a grinding frame (10); the grinding motor (12) is connected to a grinding roller (11) by a sprocket chain (13); and the grinding frame (10) is provided with a through hole adapted to the sprocket chain (13).

4. The pipeline inner wall grinding device according to claim 3, characterized in that: The contraction and expansion mechanism comprises two slip rings (15) which are slidably matched with the fixed rod (1), a plurality of support rods (5) are fixedly mounted on the two slip rings (15), a roller shaft (6) is rotatably connected to the side of the support rod (5) away from the slip ring (15), a movable groove which is slidably matched with the roller shaft (6) is provided on the hinge rod (3), and a left and right driving component which drives the two slip rings (15) to move left and right synchronously is provided on the fixed rod (1).

5. The pipeline inner wall grinding device according to claim 4, characterized in that: The left and right driving components include an embedded groove formed on a fixed rod (1), two sliders (18) respectively fixedly connected to two slip rings (15) are slidably fitted in the embedded groove, a screw rod (17) is rotatably connected in the embedded groove, and the two sliders (18) are both threadedly connected to the screw rod (17), and a moving motor (19) for driving the screw rod (17) to rotate is fixedly mounted on the fixed rod (1).

6. The pipeline inner wall grinding device according to claim 5, characterized in that: Each group of mobile structures also includes a fixed ring (2) fixedly connected to the fixed rod (1), and a plurality of hinged rods (3) in each group of mobile structures are hinged to the fixed ring (2).

7. The pipeline inner wall grinding device according to claim 6, characterized in that: The fixing rod (1) is provided with two sliding grooves (16), and the two sliding rings (15) are respectively placed in the two sliding grooves (16).

8. The pipeline inner wall grinding device according to claim 7, characterized in that: The fixed rod (1) is provided with a positioning telescopic cylinder (20) having one end fixedly connected to a rotating disk (21).

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