Rotary scraping knife device

Abstract

The utility model discloses a rotary scraping knife device which comprises a sliding trolley, a knife rest main body and a connecting assembly, the sliding trolley and the knife rest main body form a chain-shaped track, the connecting assembly is used for connecting the knife rest main body and the sliding trolley, and the chain-shaped track further comprises a tensioning mechanism trolley. The tensioning mechanism trolley is used for enabling the chain-shaped track to be tightly attached to the outer wall of the pipeline all the time through compensation profiling by means of the tensioner. According to the rotary scraping knife device and the rotary plastic pipe scraping knife, modular design is adopted, and small modules are combined in each independent module, so that the scraping efficiency is greatly improved, a new scraping technology is innovated, the technical problem of oxide skin removal of large-diameter thick-wall pipes is solved, a brand new technology of simultaneously carrying out scraping and spiral feeding is realized, and the large-diameter thick-wall pipes with the large-diameter thick-wall pipes with the large-diameter thick-wall pipes with the large-diameter thick-wall pipes with the large-diameter thick-wall pipes with the large-diameter thick-wall pipes are obtained. Different feeding speeds can be achieved by adjusting the indicating scale position of the arrow on the connecting block, and the device is flexible, convenient and fast to use, ingenious in structural design, light in weight, flexible to move, convenient to assemble, disassemble and carry due to the fact that all the parts are detachably connected, and extremely wide in application.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical pipeline processing, in particular to the removal of oxide layers of large-diameter, thick-walled plastic pipes used in the petroleum, chemical, natural gas and other industries, and specifically is a rotary skin scraper device. Background Art

[0002] With the demand for plastic pipe installation in various fields, higher requirements are put forward for the quality of hot-melt installation of plastic pipes. Before hot-melt installation of pipes, the process of removing the oxide layer must be carried out so that the best connection effect can be achieved during hot-melt connection. Currently, both the internal expansion type and the tube clamp type scrapers on the market can only be used for descaling of small-diameter pipes with small wall thickness. Because these two types of scrapers use fixed screw feed, they cannot be used for large-diameter pipes with large wall thickness. At the same time, there is a technical difficulty in removing the oxide layer of large-diameter and thick-walled pipes. How to make the ring chain spirally feed during the rotating scraping process like the internal expansion type and tube clamp type scrapers? How to solve this technical problem and develop a new plastic pipe scraper that can be adjusted arbitrarily according to the different pipe diameters and is not affected by the pipe wall thickness. At the same time, the set spiral feed can be achieved during the scraping process, and the installation and disassembly are extremely convenient and quick. These are particularly important. Utility Model Content

[0003] The purpose of the utility model is to provide a rotary scraper device which can be adjusted arbitrarily according to different pipe diameters and is not affected by the pipe wall thickness, while overcoming a technical difficulty, realizing simultaneous scraping and spiral feeding, and is extremely convenient to install and disassemble, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary skin scraper device, comprising a sliding trolley and a knife holder body constituting a chain track, and a connecting assembly for connecting the knife holder body and the sliding trolley, the chain track also comprising a tensioning mechanism trolley, wherein the tensioning mechanism trolley is used to make the chain track always close to the outer wall of the pipe through compensating profiling through a tensioner.

[0005] Furthermore, the tool holder body is composed of a flat roller trolley and four first rollers located at the bottom of the flat roller trolley, wherein the flat roller trolley moves the tool holder body along the vertical plane of the axis of the flat roller trolley through the rollers at its bottom end, and at the same time, the first rollers are rotatably installed on the left and right ends of the flat roller trolley through the first pin shaft.

[0006] Furthermore, a U-shaped handle is provided on the upper end surface of the flat roller trolley, and a tool holder block is installed on the side of the flat roller trolley. The tool holder block is connected and fixed to the C-shaped slide on the side of the flat roller trolley through a locking knob, and the tool holder block drives the tool head to rise and fall through a lifting knob.

[0007] As a further feature, one end of the flat roller trolley is also connected to a connecting block with an indicating arrow, the connecting block is connected to a sliding nut via a fixing bolt, and the sliding nut can move within the scale range of the square groove.

[0008] As a further feature, the tensioning mechanism trolley is divided into two sections which are disconnected on the left and right, and the two sections are slidably connected via a central guide shaft.

[0009] As a further feature, the tension springs located on both sides of the central guide shaft are used to provide a restoring force after the tensioning mechanism trolley is deformed, wherein the tension springs are connected to the side walls of the tensioning mechanism trolley through fixing bolts.

[0010] As a further feature, the connection assembly is composed of a third connection plate and first pins located at both ends of the third connection plate.

[0011] Furthermore, the sliding trolley consists of a trolley body and a handle located at the top center of the trolley body, and the front and rear bottom of the trolley body are provided with front and rear symmetrical second rollers, wherein the front and rear ends of the trolley body are provided with slots for engaging in the chain track.

[0012] Furthermore, one end of the flat roller trolley is connected to a connecting block via a locking screw, the connecting block is connected to the first connecting plate via a second pin shaft, and the other end is connected to the second connecting plate via a second pin shaft. An arrow indication is provided on the connecting block, and the arrow indication cooperates with the scale indication on the flat roller trolley to accurately determine the feed rate of scraping.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the rotary scraper device, the rotary plastic pipe scraper adopts a modular design, each individual module has a combination of small modules, which greatly improves the scraping efficiency, innovates a new scraping technology, solves the technical problem of removing oxide scales from large-diameter thick-walled pipes, and realizes a new technology for simultaneous scraping and spiral feeding. Different feed speeds can be achieved by adjusting the indicating scale position of the arrow on the connection fastener. The utility model is flexible and convenient. The structure of the utility model is cleverly designed, light in weight, flexible in movement, and each part can be detachably connected, which is convenient for assembly and disassembly and transportation, and has a wide range of uses.

[0014] The sliding trolley, connecting assembly, tensioning mechanism trolley, and contour trolley are made of special aviation aluminum, which greatly reduces the overall weight of the equipment. The tool holder body, chain ring track, and tensioning mechanism device are connected as a whole through the connecting assembly. The flat roller trolley is connected to a connecting block with an arrow at one end, and the corresponding flat trolley end has a scale. The connecting block can be adjusted arbitrarily within the scale range; the flat trolley end has a square groove, and there is a sliding nut in the square groove. The sliding nut is connected to the connecting block through a screw. The sliding trolley, tensioning mechanism trolley, contour trolley, and flat roller trolley are all connected as a whole by the connecting assembly through pins. Each connection part adopts a quick disassembly structure design. Each connection part is hinged and can rotate 350°. Installation and disassembly are extremely convenient and quick. One end of the flat roller trolley is connected to one end of the chain-shaped circular track through a connecting assembly, and this end is the fixed end; the end with a scale is connected to one end of the chain-shaped circular track through a connecting block, and this end can realize the pitch of different feed spiral lines through the scale indicated by the arrow on the connecting block, so as to realize simultaneous feeding along the spiral during the scraping process. The main body of the sliding trolley adopts an arched structure design, with arc grooves at both ends, which is convenient and fast to connect, and is extremely practical for the inspection and maintenance of subsequent equipment. The connecting assembly and the sliding trolley are clearance-matched to ensure transmission accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the tool holder body of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the tensioning mechanism trolley of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the connection assembly of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the sliding trolley of the utility model;

[0020] Figure 6 For this utility model Figure 2 Schematic diagram of the local structure of the flat roller trolley;

[0021] Figure 7 It is a partial top view structural schematic diagram of the flat roller trolley of the utility model.

[0022] In the figure: 1. tool holder body; 2. sliding trolley; 3. tensioning mechanism trolley; 4. connecting assembly; 5. tensioner; 6. first connecting plate; 7. flat roller trolley; 8. tool holder block; 9. locking knob; 10. lifting knob; 11. U-shaped handle; 12. first roller; 13. first pin shaft; 14. second connecting plate; 15. center guide shaft; 16. tension spring; 17. fixing bolt; 18. third connecting plate; 19. second pin shaft; 20. handle; 21. trolley body; 22. second roller; 23. connecting block; 24. arrow indication; 25. scale indication; 26. square slot; 27. locking screw; 28. sliding nut; 29. ​​chain track. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-Figure 7 , the utility model provides the following technical solutions:

[0025] The skin scraping knife device in this embodiment includes a sliding trolley 2 and a knife holder body 1 constituting a chain track 29, and a connecting assembly 4 for connecting the knife holder body 1 and the sliding trolley 2. The chain track 29 also includes a tensioning mechanism trolley 3, wherein the tensioning mechanism trolley 3 is used to make the chain track 29 always close to the outer wall of the pipeline through a tensioner 5 by compensating for profiling. First, the knife holder body 1, the sliding trolley 2, the tensioning mechanism trolley 3, and the tensioner 5 are connected to form a chain track 29 matching the diameter of the pipeline through the connecting assembly 4, and the end of the skin scraping is drawn on the pipeline. Stop position, chain track 29 is installed on the pipe, the position of 3 / 4 of the cutter head is aligned with the end face of the pipe, and the lifting knob 10 is rotated to make the cutter head have a certain lifting height, and the locking knob 9 is loosened, and the main body of the cutter holder is lowered, so that the cutter head contacts the outer wall of the pipe, and the locking knob 9 is locked, and the lifting knob 10 is rotated to reset. At this time, the pressure of the compression spring on the top of the handle makes the cutter head enter the outer wall of the pipe to a certain depth, and then, according to the arrow on the flat roller trolley, the handle 20 is moved in the same direction, and after several rotations, the cutter head is located at the position of the stop line to complete the whole scraping process.

[0026] The tool holder body 1 is composed of a flat roller trolley 7 and four first rollers 12 located at the bottom of the flat roller trolley 7, wherein the flat roller trolley 7 moves the tool holder body 1 along the vertical plane of the axis of the flat roller trolley 7 through the roller at its bottom end, and the first roller 12 is rotatably installed on the left and right ends of the flat roller trolley 7 through the first pin shaft 13, and the upper end surface of the flat roller trolley 7 is provided with a U-shaped handle 11, and a tool holder block 8 is installed on the side of the flat roller trolley 7, and the tool holder block 8 is connected and fixed to the C-shaped slideway on the side of the flat roller trolley 7 through a locking knob 9 On the top, the tool holder block 8 drives the tool head to rise and fall through the lifting knob 10, and the tool holder body 1 is equipped with a liftable tool head, a U-shaped handle 11 and a flat roller trolley 7; the feed tool holder composed of the intermediate connecting component 4 is arranged 180 degrees symmetrically, and two tools can be clamped at the same time; the telescopic fixed legs are 4 evenly arranged 90 degrees symmetrically, and the rotating fixing device is two 180 degrees symmetrically arranged on the moving coil device. Two lifting ear bolts are installed on the upper and lower petals of the fixed coil device respectively, which is convenient for lifting. The whole system adopts gear transmission and intelligent control, and the operation is stable and reliable.

[0027] One end of the flat roller trolley 7 is also connected to a connecting block 23 with an indicating arrow, and the connecting block 23 is connected to a sliding nut 28 through a fixing bolt 17, and the sliding nut 28 can move within the scale range of the square groove 26.

[0028] In order to make the entire chain track 29 be able to maintain a state of contact with the pipe surface, the following solution is also disclosed. Figure 3 The tensioning mechanism trolley 3 is divided into two sections, which are disconnected on the left and right, and the two sections are slidably connected by a central guide shaft 15. The tension springs 16 located on both sides of the central guide shaft 15 are used to provide a restoring force for the tensioning mechanism trolley 3 after deformation, wherein the tension springs 16 are connected to the side wall of the tensioning mechanism trolley 3 through fixing bolts 17. The four tension springs 16 ensure that the rollers can be evenly pressed on the pipe, and the central guide shaft 15 is used to ensure that the entire chain-shaped circular track always runs on a vertical plane.

[0029] The connecting assembly 4 is composed of a third connecting plate 18 and first pins 13 located at two ends of the third connecting plate 18 .

[0030] The sliding trolley 2 consists of a trolley body 21 and a handle 20 located at the top center of the trolley body 21. The front and rear bottom of the trolley body 21 are provided with front and rear symmetrical second rollers 22, and the front and rear ends of the trolley body 21 are provided with slots for engaging in the chain track 29.

[0031] The chain track 29 can adjust each module combination according to different pipe diameters to achieve an adaptability effect. Specifically, as shown in the following content, one end of the flat roller trolley 7 is connected to the connecting block 23 through a locking screw 27, and the connecting block 23 is connected to the first connecting plate 6 through a second pin shaft 19, and the other end is connected to the second connecting plate 14 through a second pin shaft 19. The connecting block 23 is provided with an arrow indication 24, and the arrow indication 24 cooperates with the scale indication 25 on the flat roller trolley 7 to accurately determine the feed rate of the scraping. The tool holder body 1 can slide up and down to adjust the position of the cutter head according to the curvature of the pipe diameter to achieve the best scraping effect; the connecting pin shaft 14 can achieve 350° rotation; the scale at one end of the flat roller trolley 7 cooperates with the connecting block 23 to meet the requirements of different pipe diameters and on-site construction environments; the top of the handle of the tool holder block 8 is provided with a compression spring to meet the scraping of the elliptical pipe with a profiling function; at the same time, the tension spring 16 of the tensioning mechanism trolley 3 allows the chain track 29 to always be close to the outer wall of the pipe through the tensioner 5, which has a compensating profiling function.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary skin scraper device, comprising a sliding trolley (2) and a knife holder body (1) forming a chain track (29), and a connecting assembly (4) for connecting the knife holder body (1) and the sliding trolley (2), characterized in that: The chain track (29) further comprises a tensioning mechanism trolley (3), wherein the tensioning mechanism trolley (3) is used to make the chain track (29) always closely adhere to the outer wall of the pipeline by compensating for profiling through a tensioner (5); The tool holder body (1) is composed of a flat roller trolley (7) and four first rollers (12) located at the bottom of the flat roller trolley (7), wherein the flat roller trolley (7) moves the tool holder body (1) along a plane vertical to the axis of the flat roller trolley (7) through the rollers at its bottom end, and the first rollers (12) are rotatably mounted on the left and right ends of the flat roller trolley (7) through the first pin shaft (13); The upper end surface of the flat roller trolley (7) is provided with a U-shaped handle (11), and a tool holder block (8) is installed on the side of the flat roller trolley (7). The tool holder block (8) is connected and fixed to the C-shaped slideway on the side of the flat roller trolley (7) through a locking knob (9), and the tool holder block (8) drives the tool head to rise and fall through a lifting knob (10); One end of the flat roller trolley (7) is also connected to a connection block (23) with an indicating arrow, and the connection block (23) is connected to a sliding nut (28) via a fixing bolt (17), and the sliding nut (28) can move within the scale range of the square groove (26); The tensioning mechanism trolley (3) is divided into two sections, one on the left and the other on the right, and the two sections are slidably connected via a central guide shaft (15); The tension springs (16) located on both sides of the central guide shaft (15) are used to provide a restoring force for the tensioning mechanism trolley (3) after deformation, wherein the tension springs (16) are connected to the side walls of the tensioning mechanism trolley (3) via fixing bolts (17); the tension springs (16) ensure that the rollers can be pressed against the pipe, and the central guide shaft (15) is used to ensure that the chain track (29) always runs on a vertical plane.

2. A rotary skin scraper device according to claim 1, characterized in that: The connection assembly (4) consists of a third connection plate (18) and first pins (13) located at both ends of the third connection plate (18).

3. A rotary skin scraper device according to claim 2, characterized in that: The sliding trolley (2) comprises a trolley body (21), a handle (20) located at the top center of the trolley body (21), and second rollers (22) symmetrically arranged at the front and rear bottoms of the trolley body (21), wherein the front and rear ends of the trolley body (21) are both provided with slots for engaging in the chain track (29).

4. A rotary skin scraper device according to claim 3, characterized in that: One end of the flat roller trolley (7) is connected to a connecting block (23) via a locking screw (27), the connecting block (23) is connected to the first connecting plate (6) via a second pin shaft (19), and the other end is connected to the second connecting plate (14) via a second pin shaft (19). An arrow indication (24) is provided on the connecting block (23), and the arrow indication (24) cooperates with a scale indication (25) on the flat roller trolley (7) to accurately determine the feed rate of the scraping.

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