Mouth-protecting blocking roller for anticorrosion production and processing after beveling of steel pipe

Abstract

The utility model relates to the technical field of steel pipe production, and discloses a mouth-protecting blocking roller for anticorrosion production after beveling of a steel pipe, which comprises a main shaft, an annular belt sleeved on the main shaft, clamping flanges sleeved on the main shaft at two ends of the annular belt, the clamping flanges are fixedly connected with the main shaft, and the annular belt and the clamping flanges at two ends are connected into a whole. Locking nuts are mounted on the main shaft on the sides, far away from each other, of the two clamping flanges; the annular belt is made of a wear-resistant nylon conveying belt material; the main shaft is sleeved with the annular belt, the clamping flanges are arranged at the two ends of the annular belt, the clamping flanges are fixedly connected with the main shaft, the annular belt and the clamping flanges at the two ends are connected into a whole, and the overall structural strength is high; and the problem that the groove of the pipe end is damaged due to the fact that the machined groove of the pipe end of the steel pipe collides with the roller is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe production, in particular to a steel pipe groove protection roller used for corrosion protection production and processing after groove formation. Background Art

[0002] During the anti-corrosion production process after the steel pipe is broken, due to the non-roundness of the steel pipe, the steel pipe will experience axial movement back and forth on the gantry roller. This will cause the finished steel pipe groove, especially the pipe end that is required to have no blunt edges, to collide with the gantry roller and produce a gap. After this phenomenon occurs, the grooves at both ends of the pipe must be reprocessed and repaired, which will lead to low production efficiency and even recurring problems, resulting in high steel pipe manufacturing costs. At present, in actual production processes, the hard collision of steel rollers designed according to the groove angle cannot solve the problem. Various types of rollers have been tested and none of them can solve the problem of easy damage to the groove of the steel pipe end. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a protective roller for the anti-corrosion production and processing of steel pipe beveling, which avoids the problem of damage to the pipe end bevel caused by the hard collision between the processed steel pipe end bevel and the roller.

[0004] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0005] A protective roller for the post-beveling anti-corrosion production and processing of steel pipes includes a main shaft, an annular belt is sleeved on the main shaft, clamping flanges are sleeved on the main shaft at both ends of the annular belt, the clamping flanges are fixedly connected to the main shaft, the annular belt is connected to the clamping flanges at both ends as a whole, and locking nuts are installed on the main shaft on the side where the two clamping flanges are away from each other. The annular belt is made of wear-resistant nylon conveyor belt material.

[0006] As a further implementation method, an annular belt matching portion is provided in the middle of the main shaft for matching with the annular belt, and flange matching portions are provided on the main shaft at both ends of the annular belt matching portion for matching with the clamping flange.

[0007] As a further implementation, a keyway is provided on the flange mating portion, a keyway is correspondingly provided on the inner side of the clamping flange, and the keyway of the main shaft and the keyway of the clamping flange are correspondingly provided and connected by a key.

[0008] As a further implementation, the outer diameter of the flange fitting portion is smaller than the outer diameter of the annular belt fitting portion to form a step for clamping the flange for positioning and installation.

[0009] As a further implementation, the main shaft is provided with a thread, which is provided on one side of the flange matching portion and located between the flange matching portion and the main shaft end portion, and the thread cooperates with the locking nut to abut against the clamping flange.

[0010] As a further implementation, the annular belt is an annular structure, the inner side surface of the through hole in the center is used to cooperate with the outer side surface of the matching part of the annular belt, and a plurality of second through holes are evenly provided on the annular belt along the circumferential direction.

[0011] As a further implementation method, the clamping flange is provided with a plurality of first through holes correspondingly along the circumferential direction, the first through holes and the second through holes are aligned, and both ends of the pin shaft extend to the outside of the clamping flange after passing through the through holes and a pin shaft lock nut is installed.

[0012] As a further implementation, the annular belt is an integral structure.

[0013] As a further implementation, the clamping flange is annular, and the outer diameter of the clamping flange is smaller than the outer diameter of the annular band.

[0014] As a further implementation, the annular belt is split, and a plurality of annular belts are arranged on the main shaft and distributed axially along the main shaft.

[0015] The beneficial effects of the above utility model are as follows:

[0016] 1. The utility model has an annular belt sleeved on the main shaft, and clamping flanges are provided at both ends of the annular belt. The clamping flanges are fixedly connected to the main shaft. The annular belt and the clamping flanges at both ends are connected as a whole, and the overall structural strength is high. In addition, the annular belt is made of wear-resistant nylon conveyor belt material, which avoids the problem of damage to the groove of the pipe end caused by the hard collision between the processed groove of the steel pipe end and the roller.

[0017] 2. The support flange and the annular belt of the utility model are fixedly connected by a pin shaft, so that the annular belt can be easily disassembled. After the outer edge of the annular belt is worn, the clamping flange is disassembled and the annular belt is reinstalled, so that long-term repeated use can be achieved.

[0018] 3. The utility model supports the concentric setting of the flange and the main shaft, and the center positioning of the clamping flange is consistent with the annular belt, which ensures the concentricity and will not cause skewness when the guard roller rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of the mouth guard roller in the embodiment of the utility model;

[0021] Figure 2 This is a schematic structural diagram of the main shaft in an embodiment of the present utility model;

[0022] Figure 3This is a schematic structural diagram of the clamping flange in an embodiment of the present utility model;

[0023] Figure 4 It is a structural schematic diagram of the annular belt in an embodiment of the present utility model.

[0024] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0025] Wherein: 1. main shaft, 2. clamping flange, 3. locking nut, 4. annular belt, 5. pin, 6. pin lock nut; 11. flange matching part, 111. keyway, 12. thread, 21. first through hole, 22. keyway, 41. second through hole. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0027] Example 1

[0028] In a typical embodiment of the present invention, reference is made to Figures 1-4 As shown, a guard roller for anti-corrosion production and processing after beveling of steel pipes includes a main shaft 1, an annular belt 4 is sleeved on the main shaft 1, clamping flanges 2 are sleeved on the main shaft at both ends of the annular belt 4, the clamping flanges 2 are fixedly connected to the main shaft 1, the annular belt 4 is connected to the clamping flanges 2 at both ends as a whole, and a locking nut 3 is installed on the main shaft 1 on the side where the two clamping flanges 2 are away from each other.

[0029] like Figure 2 As shown, an annular belt matching portion is provided in the middle of the main shaft 1 for fitting with the annular belt, and flange matching portions 11 are provided on the main shaft at both ends of the annular belt matching portion for fitting with the clamping flange.

[0030] The outer diameter of the flange mating portion 11 is smaller than that of the annular band mating portion, forming a step for positioning the clamping flange. During installation, first install the annular band, fitting the annular band 4 over the mating portion of the annular band on the main shaft 1. The annular band length must be equal to the mating portion. Then, install the clamping flange. Install the clamping flange 2 onto the steps at each end of the annular band, ensuring that the clamping flange abuts the ends of the annular band 4. The clamping flange 2 is positioned at the steps and fits over the flange mating portion 11.

[0031] In order to achieve a fixed connection between the clamping flange 2 and the main shaft 1, as shown in FIG. Figure 2As shown, a keyway 111 is provided on the flange mating portion 11, and a keyway 22 is provided in the inner through-hole of the clamping flange 2. The keyway 111 and the keyway 22 have the same size and are concave in shape. The clamping flange 2 and the main shaft 1 are fixed together by a key connection. The cross-sections of the two keyways are rectangular.

[0032] In order to achieve a fixed connection between the clamping flange 2 and the annular belt 4, the main shaft 1 drives the annular belt 4 to rotate through the clamping flange 2, such as Figure 4 As shown, the annular band 4 is an annular structure. The through hole in its center is designed to mate with the annular band mating portion, and the inner diameter of the through hole matches the outer diameter of the annular band mating portion. The annular band 4 is provided with a quadrant of second through holes 41 along the annular band 4. The second through holes 41 are located on a circle centered at the center of the annular band 4.

[0033] like Figure 3 As shown, the clamping flange 2 is also annular in structure, and the through hole in the center is used to cooperate with the flange matching portion. The clamping flange is provided with four equally divided first through holes 21 along the circumference. The first through holes 21 are located on the same circumference with the center of the clamping flange as the center.

[0034] like Figure 1 As shown, during installation, the first through hole 21 and the second through hole 41 are aligned, and both ends of the pin 5 extend to the outside of the clamping flange after passing through the through holes and the pin lock nut 6 is installed to connect the clamping flange 2 and the annular belt 4 into one.

[0035] In order to fix the integral structure of the clamping flange 2 and the annular belt 4 and prevent the integral structure from sliding on the main shaft, as shown in FIG. Figure 1 and Figure 2 As shown, the two flange mating parts on the main shaft are provided with threads 12 on the side away from each other. The outer diameter of the threads is smaller than that of the flange mating parts. The threads 12 are provided on one side of the flange mating parts and are located between the flange mating parts and the end of the main shaft. The threads cooperate with the lock nut 3 to abut and clamp the flanges.

[0036] The specific installation sequence is to install the annular belt first, then install the clamping flanges at both ends of the annular belt, then use the pin and pin lock nut 6 to connect the clamping flange and the annular belt into one, and then install the lock nut 3 at both ends. The pin 5 is set parallel to the clamping flange 2 and the main shaft 1.

[0037] It is understood that the clamping flange is annular, the outer diameter of the clamping flange is smaller than the outer diameter of the annular band, and the outer diameter of the annular band is 30 mm larger than the outer diameter of the clamping flange. The annular band is an integral structure, which is a sleeve-like structure. The length of the annular band is equal to the length of the mating portion of the annular band.

[0038] In a preferred embodiment, the annular belt is a split type, with several sheet-like annular belts arranged on the main shaft and distributed axially along the main shaft. The annular belt is made of wear-resistant nylon conveyor belt material to prevent damage to the grooves at both ends caused by the non-roundness of the steel pipe and the hard collision of the steel pipe during movement.

[0039] The inner ring of the clamping flange is tightly connected to the main shaft through a keyway, effectively ensuring the stability of the clamping flange; the radially identical four-part holes on the outer ring of the clamping flange are consistent with the radially identical four-part holes on the annular belt, making it convenient for the stud screw pin to penetrate and then be tightened on both sides to form a gap-free whole with the annular belt and the clamping flange.

[0040] In this embodiment, an annular belt is arranged around the outer periphery of the main shaft of the retaining roller. A pin shaft is arranged parallel to the main shaft of the annular belt and is fixed by clamping flanges at both ends. This can solve the problem of damage to the bevel of the steel pipe end due to the movement of the pipe and the lack of a suitable retaining roller during the anti-corrosion production and processing after the steel pipe beveling.

[0041] The main shaft is made of 45# steel. 45# steel has a set toughness and strength. It is turned after normalizing. The two sides of the main shaft are smoothed and keyways are made to facilitate keyway connection with the annular clamping flange.

[0042] In this embodiment, the endless belt is a wear-resistant nylon conveyor belt that has been stamped and cut. It is primarily used in high-wear environments in industries such as cement, coking, metallurgy, chemicals, and steel. The wear-resistant nylon belt has a service life of 2.5-3 years. The endless belt is configured as a split-piece, consisting of multiple pieces that are sequentially spliced ​​together to form a complete circular ring. During assembly, the clamping flange at one end is removed and the endless belt is assembled piece by piece onto the outer periphery of the main shaft. The endless belt can be installed from one end of the main shaft. The endless belt and the main shaft form a tight fit, and the pin and keyway cooperate to prevent the endless belt from rotating and shifting.

[0043] In this embodiment, the outer dimensions of the mouth guard roller are φ160 mm, the height is 300 mm, and the thickness of the annular belt used is 14 mm.

[0044] The retaining roller, annular belt and clamping flange are fastened together by a pin shaft to form a whole with consistent concentricity. The supporting flange is tightly matched with the main shaft by means of a key and a keyway, and the annular belt is firmly connected to the clamping flange by means of stud bolts. The annular belt is a machined product. When the outer edge is worn, the clamping flange can be disassembled and then the annular belt can be reinstalled to achieve the purpose of long-term repeated use.

[0045] In terms of any anti-corrosion production and processing of covering pipes, the main pipe diameters ranging from φ219mm to φ3620mm can be applied to the steel pipe groove anti-corrosion production and processing of the utility model.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A steel pipe groove protection roller for corrosion protection production and processing, characterized in that: It includes a main shaft, an annular belt is sleeved on the main shaft, clamping flanges are sleeved on the main shaft at both ends of the annular belt, the clamping flanges are fixedly connected to the main shaft, the annular belt is connected to the clamping flanges at both ends as a whole, and locking nuts are installed on the main shaft on the side where the two clamping flanges are away from each other. The annular belt is made of wear-resistant nylon conveyor belt material.

2. The steel pipe groove protection roller for anti-corrosion production and processing according to claim 1 is characterized in that: An annular belt matching portion is provided in the middle of the main shaft for matching with the annular belt sleeve. Flange matching portions are provided on the main shaft at both ends of the annular belt matching portion for matching with the clamping flange.

3. The steel pipe groove protection roller for anti-corrosion production and processing according to claim 2 is characterized in that: The flange matching portion is provided with a keyway, and the inner side of the clamping flange is correspondingly provided with a keyway. The keyway of the main shaft and the keyway of the clamping flange are correspondingly arranged and connected by a key.

4. The steel pipe groove protection roller for anti-corrosion production and processing according to claim 2 is characterized in that: The outer diameter of the flange matching portion is smaller than the outer diameter of the annular belt matching portion to form a step for clamping the flange for positioning and installation.

5. The steel pipe groove protection roller for anti-corrosion production and processing according to claim 2 is characterized in that: The main shaft is provided with a thread, which is arranged on one side of the flange matching portion and is located between the flange matching portion and the main shaft end portion. The thread cooperates with the locking nut to abut against the clamping flange.

6. The steel pipe groove protection roller for anti-corrosion production and processing according to claim 2 is characterized in that: The annular belt is an annular structure, the inner side surface of the through hole in the center is used to cooperate with the outer side surface of the matching part of the annular belt, and a plurality of second through holes are evenly arranged on the annular belt along the circumferential direction.

7. The steel pipe groove protection roller for anti-corrosion production and processing according to claim 6 is characterized in that: The clamping flange is provided with a plurality of first through holes correspondingly along the circumferential direction. The first through holes are aligned with the second through holes. After the pin passes through the through holes, both ends extend to the outside of the clamping flange and are installed with pin lock nuts.

8. The steel pipe groove protection roller for anti-corrosion production and processing according to claim 1 is characterized in that: The annular belt is an integral structure.

9. The steel pipe groove protection roller for anti-corrosion production and processing according to claim 1 is characterized in that: The clamping flange is annular, and the outer diameter of the clamping flange is smaller than the outer diameter of the annular belt.

10. The steel pipe groove protection roller for corrosion protection production and processing according to claim 1 is characterized in that: The annular belt is split, and a plurality of annular belts are arranged on the main shaft and distributed along the axial direction of the main shaft.

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