Rotary internal bracing type fixing device for petrochemical pipeline

Abstract

The utility model belongs to the technical field of fixing of the inner wall of the end of a petrochemical pipeline, and discloses a rotary internal bracing type fixing device for the petrochemical pipeline, which is characterized in that a movable strip-shaped hole is formed in the middle of the bottom of a telescopic groove; the movable rack is mounted in the movable strip-shaped hole; the convex edge is fixedly arranged on the peripheral edge of the outer side of the upper end face of the supporting cylinder, and the fixed disc is fixedly arranged in the middle of the bottom of the supporting cylinder; the bearing is fixedly mounted in the center hole; the slewing bearing is fixedly installed on the upper end face of the tight supporting cylinder. The four vertical transmission mechanisms are symmetrically arranged in a cross shape; the rotating disc is fixedly arranged on the inner ring of the slewing bearing; the upper end of the rotating shaft penetrates through the center of the fixed disc, the center of the rotating disc and the center of the end cover and extends to the upper part of the rotating disc. The device has the advantages that the inner wall of the end face can be automatically fixed in the machining process of the petrochemical pipeline, the surface space of the end face of the pipeline is not occupied, and the fixing efficiency and convenience of the petrochemical pipeline are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of end inner wall fixing of petrochemical pipelines, specifically relating to a rotating internal support type fixing device for petrochemical pipelines. Background Technology

[0002] The processing and manufacturing of petrochemical pipelines mainly includes processes such as rust removal, hot bending, epoxy coating, pipe end beveling, anti-corrosion tape wrapping, and finished product quality inspection. The most frequent issue in the entire petrochemical pipeline manufacturing process is the securing of the pipeline, especially since rust removal, hot bending, epoxy coating, pipe end beveling, and anti-corrosion tape wrapping all require secure pipe fixing to ensure successful petrochemical pipeline manufacturing.

[0003] In existing technologies, during the processing of petrochemical pipelines, mechanical or hydraulic clamps are typically used to clamp and fix the outer surface of the pipeline's end face, facilitating further processing. The main technical problems with these existing methods are: 1. Both mechanical and hydraulic clamps clamp the pipeline externally, occupying space on the end face and hindering processes such as rust removal, hot bending, epoxy coating, beveling, and applying anti-corrosion tape. 2. Mechanical and hydraulic clamps have low automation levels, making pipeline end face fixing inconvenient. Mechanical clamps, in particular, require manual assistance, resulting in low efficiency and inconvenience. To address these shortcomings, the inventors have developed a rotary internal support clamping device for petrochemical pipelines, effectively solving these problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a rotary internal support fixing device for petrochemical pipelines. It has a simple structure and a scientific and reasonable design, which can automatically fix the inner wall of the end face of the petrochemical pipeline during the processing, without occupying the surface space of the pipeline end face, thus improving the fixing efficiency and convenience of petrochemical pipelines.

[0005] The technical solution adopted by this utility model is as follows: a rotary internal support fixing device for petrochemical pipelines, comprising a support cylinder, a support body, and a telescopic groove. The support cylinder is a cylindrical shape with one end closed and the other end open. The telescopic groove is symmetrically arranged in a cross shape on the bottom surface of the support cylinder. The support body is fitted into the telescopic groove and can slide in the telescopic groove. The support body is strip-shaped. A movable strip-shaped hole is opened at the middle position of the bottom of the telescopic groove and penetrates the bottom of the telescopic groove. A movable rack is installed in the movable strip-shaped hole, and the bottom of the movable rack is fixedly connected to the upper part of the support body. A central hole is opened at the center position of the bottom of the support cylinder and penetrates the bottom of the support cylinder. A protruding edge is fixedly arranged on the outer circumferential edge of the upper end face of the support cylinder. A fixing plate is fixedly arranged on the support cylinder. The support cylinder is located at the bottom center position; a bearing is fixedly installed in the central hole, and the bottom of the rotating shaft is fixedly installed in the inner ring of the bearing; a slewing bearing is fixedly installed on the upper end face of the support cylinder, and the inner ring surface of the slewing bearing is provided with slewing teeth; four vertical transmission mechanisms are arranged symmetrically in a cross shape, and the vertical transmission mechanisms are vertically fixed on the bottom surface inside the support cylinder, with the bottom of the vertical transmission mechanism located on one side of the moving rack, and the upper part of the vertical transmission mechanism extending through the edge of the fixed plate to the inner edge of the inner ring of the slewing bearing; a rotating disk is fixedly installed on the inner ring of the slewing bearing, and the upper end of the rotating shaft extends through the center of the fixed disk, the center of the rotating disk and the end cover to the upper part of the rotating disk, and the rotating shaft and the upper part of the rotating disk are fixedly connected by the end cover.

[0006] The outer end of the telescopic groove extends through the support cylinder body, and the size of the telescopic groove is larger than the size of the support body.

[0007] The height of the convex edge is lower than the upper end face of the tensioning cylinder, and the diameter of the convex edge is greater than the outer diameter of the tensioning cylinder.

[0008] The fixing plate includes a fixing plate body, which is circular in shape. A through hole is opened in the center of the fixing plate body, and mounting holes are symmetrically opened in a cross shape on the fixing plate body.

[0009] The outer ring of the slewing bearing is fixed on the convex edge, and a gap is reserved between the inner ring of the slewing bearing and the upper end face of the tensioning cylinder.

[0010] The vertical transmission mechanism includes a bearing seat, which is fixedly mounted on the inner bottom surface of the support cylinder. The vertical shaft is fixed in the inner ring of the bearing of the bearing seat. The lower gear is fixedly mounted on the vertical shaft at the upper part of the bearing seat. The upper gear is fixedly mounted at the upper end of the vertical shaft. The roller bearing is mounted in the mounting hole. The middle position of the vertical shaft is fixedly mounted in the inner ring of the roller bearing.

[0011] The lower gear meshes with the tooth surface of the moving rack for transmission, while the upper gear meshes with the rotating teeth of the inner ring of the slewing bearing for transmission.

[0012] The rotating disk includes a rotating disk body, which is disc-shaped. Protrusions are evenly arranged around the bottom circumferential edge of the rotating disk body, and the shaft hole is opened at the center of the rotating disk body.

[0013] The upper end of the rotating shaft extends through the center of the through hole, the shaft hole, and the center of the end cap to the upper part of the rotating disk.

[0014] The protrusion at the bottom of the rotating disk body corresponds vertically to the flange hole on the inner ring of the slewing bearing, and the protrusion is fixed in the flange hole on the inner ring of the slewing bearing.

[0015] The working process of this rotary internal support fixing device for petrochemical pipelines is as follows: First, the upper end of the rotary shaft is fixedly connected to the power output end of the drive motor via a coupling. Then, the petrochemical pipeline is lifted by an overhead crane or placed on a petrochemical pipeline support, and one end of the pipeline is fitted onto the support cylinder. The drive motor is then turned on, and its power output shaft and coupling drive the rotary shaft to rotate clockwise, causing the rotating disk and slewing bearing to rotate clockwise. This causes the inner ring of the slewing bearing to rotate clockwise. The internal gears of the slewing bearing's inner ring mesh with the upper gear of the vertical transmission mechanism, thereby driving the lower gear of the vertical transmission mechanism to rotate clockwise via the vertical shaft. The needle rotates, and then the meshing transmission action of the lower gear and the moving rack causes the moving rack to move along the moving strip hole to the outside of the tensioning cylinder. Simultaneously, the lower gears of the four vertical transmission mechanisms drive the four moving racks to move synchronously to the outside of the tensioning cylinder. The movement of the four moving racks to the outside of the tensioning cylinder drives the four tensioning bodies to move along the expansion groove to the outside of the tensioning cylinder. When the four tensioning bodies are pressed against the inner wall of the petrochemical pipeline, the drive motor stops. At this time, the upper gear of the vertical transmission mechanism meshes and locks with the inner ring of the slewing bearing, and the lower gear meshes and locks with the moving rack, thus ultimately achieving the rotating, internally supporting, and tightening fixation of the inner wall of the petrochemical pipeline. When the petrochemical pipeline processing is completed and it is necessary to release the fixation of the inner wall of the pipeline, the reverse action described above is performed to release the fixation of the inner wall of the petrochemical pipeline.

[0016] The beneficial effects of this utility model are as follows: By setting up a tensioning cylinder, a tensioning body, a telescopic groove, a movable strip hole, a movable rack, a fixed disk, a rotating shaft, a bearing, a slewing bearing, a slewing internal gear, a vertical transmission mechanism, a rotating disk, and an end cover, and using a drive motor to drive the rotating shaft to rotate, the synchronous rotation and internal support telescopic action of the four tensioning bodies is realized through the linkage and transmission of the slewing bearing's slewing internal gear, the vertical transmission mechanism, the movable rack, the movable strip hole, the telescopic groove, and the tensioning body, thereby achieving the tight fixing of the inner wall of the petrochemical pipeline; it can realize the automatic fixing of the inner wall of the end face during the processing of petrochemical pipelines without occupying the surface space of the pipeline end face, thus improving the fixing efficiency and convenience of petrochemical pipelines. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the structure in the rear-view direction;

[0019] Figure 3 This is a cross-sectional view and a partial exploded view of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the tensioning cylinder of this utility model;

[0021] Figure 5 This is a schematic diagram of the vertical transmission mechanism of this utility model;

[0022] The markings in the diagram are: 1. Support cylinder, 2. Support body, 3. Telescopic groove, 4. Moving strip hole, 5. Moving rack, 6. Center hole, 7. Protruding edge, 8. Fixed plate, 81. Fixed plate body, 82. Through hole, 83. Mounting hole, 9. Rotating shaft, 10. Bearing, 11. Slewing bearing, 12. Internal slewing gear, 13. Vertical transmission mechanism, 131. Shaft seat, 132. Lower gear, 133. Upper gear, 134. Vertical shaft, 135. Roller bearing, 14. Rotating plate, 141. Rotating plate body, 142. Protruding column, 143. Shaft hole, 15. End cover. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides a rotary internal support clamping device for petrochemical pipelines:

[0025] like Figure 1 , 2 As shown in Figures 3 and 4, the tensioning body 2 is fitted into the telescopic groove 3, and the tensioning body 2 can slide in the telescopic groove 3. The tensioning body 2 is strip-shaped. The movable strip-shaped hole 4 is opened at the middle position of the bottom of the telescopic groove 3, and the movable strip-shaped hole 4 passes through the bottom of the telescopic groove 3. The movable rack 5 is installed in the movable strip-shaped hole 4, and the bottom of the movable rack 5 is fixedly connected to the upper part of the tensioning body 2. The outer end of the telescopic groove 3 passes through the body of the tensioning cylinder 1, and the size of the telescopic groove 3 is larger than the size of the tensioning body 2.

[0026] The aforementioned setup of the tensioning body 2 and the telescopic groove 3 enables the tensioning body 2 to move synchronously along the telescopic groove 3 under the influence of the moving rack 5 moving towards the center or outward of the tensioning cylinder 1. This provides the necessary conditions for the tensioning body 2 to be internally supported and fixed to the inner wall of the petrochemical pipeline.

[0027] like Figure 1 , 3 As shown, the center hole 6 is opened at the center of the bottom of the support cylinder 1, and the center hole 6 passes through the bottom of the support cylinder 1; the bearing 10 is fixedly installed in the center hole 6, and the bottom of the rotating shaft 9 is fixedly installed in the inner ring of the bearing 10.

[0028] The aforementioned arrangement of the central hole 6 and bearing 10 provides a rotational support point for the rotation of the rotating shaft 9. Thus, the rotation of the rotating shaft 9, and the fixed action of the end cover 15 and the rotating disk 14, can drive the rotating disk 14 to rotate, thereby providing rotational power for the rotation of the inner ring of the slewing bearing 11.

[0029] like Figure 1 , 2 As shown in Figure 3, the protruding edge 7 is fixedly disposed on the outer circumferential edge of the upper end face of the support cylinder 1. The height of the protruding edge 7 is lower than the upper end face of the support cylinder 1, and the diameter of the protruding edge 7 is greater than the outer diameter of the support cylinder 1.

[0030] The aforementioned structural features of the protruding edge 7 and the upper end face of the tensioning cylinder 1 form a platform for installing the slewing bearing 11 (because the structure of the slewing bearing 11 is such that the outer ring is higher than the inner ring). This allows the outer ring of the slewing bearing 11 to be fixedly installed on the protruding edge 7, and a gap is directly provided between the bottom surface of the inner ring of the slewing bearing 11 and the upper end face of the tensioning cylinder 1, which allows the outer ring of the slewing bearing 11 to be fixed while the inner ring can rotate freely.

[0031] like Figure 3 As shown, the fixing plate 8 is fixedly installed at the bottom middle position of the support cylinder 1. The fixing plate 8 includes a fixing plate body 81, which is circular in shape. A through hole 82 is opened at the center of the fixing plate body 81, and mounting holes 83 are symmetrically opened on the fixing plate body 81 in a cross shape.

[0032] The aforementioned through-hole 82 of the fixed plate 8 provides free space for the rotation of the rotating shaft 9.

[0033] The aforementioned mounting hole 83 of the fixed plate 8 allows the roller bearing 135 to be fixed in the mounting hole 83, and the vertical shaft 134 of the vertical transmission mechanism 13 is installed in the inner ring of the roller bearing 135, providing conditions for the free rotation of the vertical shaft 134. This further enables the lower gear 132 of the vertical shaft 134 to mesh with the moving rack 5, and simultaneously enables the upper gear 133 to mesh with the rotating internal gear 12 of the inner ring of the slewing bearing 11.

[0034] like Figure 3 and 5As shown, four vertical transmission mechanisms 13 are arranged symmetrically in a cross shape. The vertical transmission mechanism 13 is vertically fixed on the inner bottom surface of the support cylinder 1. The bottom of the vertical transmission mechanism 13 is located on one side of the moving rack 5. The upper part of the vertical transmission mechanism 13 extends through the edge of the fixed disk 8 to the inner edge of the inner ring of the slewing bearing 11. The vertical transmission mechanism 13 includes a bearing seat 131, which is fixedly installed on the inner bottom surface of the support cylinder 1. The vertical shaft 134 is fixed in the bearing inner ring of the bearing seat 131. The lower gear 132 is fixedly installed on the vertical shaft 134 on the upper part of the bearing seat 131. The upper gear 133 is fixedly installed at the upper end of the vertical shaft 134. The roller bearing 135 is installed in the mounting hole 83. The middle position of the vertical shaft 134 is fixedly installed in the inner ring of the roller bearing 135.

[0035] The aforementioned vertical transmission mechanism 13, through the synchronous rotation of the lower gear 132 and the upper gear 133, can convert the rotational power of the inner ring of the slewing bearing 11 into the displacement force of the moving rack 5, thereby ultimately realizing the synchronous extension and retraction of the four support bodies 2 along the telescopic groove 3.

[0036] like Figure 1 , 2 As shown in Figure 3, the rotating disk 14 is fixedly mounted on the inner ring of the slewing bearing 11. The upper end of the rotating shaft 9 extends through the center of the fixed disk 8, the center of the rotating disk 14 and the center of the end cover 15 to the upper part of the rotating disk 14. The rotating shaft 9 and the upper part of the rotating disk 14 are fixedly connected by the end cover 15. The rotating disk 14 includes a rotating disk body 141, which is disc-shaped. Protrusions 142 are evenly arranged around the bottom circumferential edge of the rotating disk body 141, and the shaft hole 143 is opened in the center of the rotating disk body 141. The protrusions 142 at the bottom of the rotating disk body 141 correspond vertically to the flange holes on the inner ring of the slewing bearing 11, and the protrusions 142 are fixed in the flange holes on the inner ring of the slewing bearing 11.

[0037] The aforementioned arrangement of the rotating disk 14, end cover 15, and rotating shaft 9 utilizes the rotational power of the rotating shaft 9 to drive the rotation of the rotating disk 14, thereby providing rotational power to the inner ring of the slewing support 11.

[0038] like Figure 1-5 As shown in the present invention, when the four supporting bodies 2 press against the inner wall of the petrochemical pipeline, the drive motor is stopped. At this time, the upper gear 133 of the vertical transmission mechanism 13 meshes and locks with the inner ring rotating gear 12 of the slewing bearing 11, while the lower gear 132 meshes and locks with the moving rack 5, thereby finally achieving the rotating inner support type pressing and fixing effect on the inner wall of the petrochemical pipeline.

[0039] The specific conditions for determining when the four support bodies 2 are pressed against the inner wall of the petrochemical pipeline are determined by the motor current. When the four support bodies 2 are pressed against the inner wall of the petrochemical pipeline, the motor load inevitably increases, thus increasing the motor current. The current detection circuit of the drive motor can detect the current change in real time (a threshold for the increase in drive motor current can be set). When the current threshold of the drive motor reaches the set threshold, the current detection circuit transmits this signal to the PLC control module. The PLC control module can then achieve automatic control of the drive motor. The above falls within the scope of existing technology and will not be elaborated upon further here.

[0040] like Figure 1-5 As shown, the working process of this rotating internal support fixing device for petrochemical pipelines is as follows: First, the upper end of the rotating shaft 9 is fixedly connected to the power output end of the drive motor through a coupling. At this time, the petrochemical pipeline is lifted or placed on the petrochemical pipeline support using an overhead crane, and one end of the petrochemical pipeline is fitted onto the support cylinder 1. Then, the drive motor is turned on, and the power output shaft of the drive motor and the coupling drive the rotating shaft 9 to rotate clockwise, which in turn drives the rotating disk 14 and the slewing bearing 11 to rotate clockwise. This causes the inner ring of the slewing bearing 11 to rotate clockwise. The internal gear 12 of the inner ring of the slewing bearing 11 meshes with the upper gear 133 of the vertical transmission mechanism 13, thereby driving the lower gear 132 of the vertical transmission mechanism 13 to rotate clockwise through the vertical shaft 134. The mechanism rotates, and then utilizes the meshing transmission action of the lower gear 132 and the moving rack 5 to move the moving rack 5 along the moving strip hole 4 towards the outside of the support cylinder 1. Simultaneously, the lower gears 132 of the four vertical transmission mechanisms 13 drive the four moving racks 5 to move synchronously towards the outside of the support cylinder 1. The movement of the four moving racks 5 towards the outside of the support cylinder 1 drives the four support bodies 2 to move along the telescopic groove 3 towards the outside of the support cylinder 1. When the four support bodies 2 are pressed against the inner wall of the petrochemical pipeline, the drive motor stops. At this time, the upper gear 133 of the vertical transmission mechanism 13 meshes and locks with the inner ring rotating internal gear 12 of the slewing bearing 11, while the lower gear 132 meshes and locks with the moving rack 5, thus ultimately achieving the rotating internal support and clamping fixation effect on the inner wall of the petrochemical pipeline. When the petrochemical pipeline processing is completed and it is necessary to release the fixation of the inner wall of the pipeline, the reverse action described above is performed to release the fixation of the inner wall of the petrochemical pipeline.

[0041] Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotating inner bracing type fixing device for petrochemical pipelines, comprising a bracing cylinder (1), a bracing body (2) and an expansion slot (3), the bracing cylinder (1) is a cylinder with one end closed and the other end open, the expansion slot (3) is cross-symmetrically arranged on the bottom surface of the bracing cylinder (1), the bracing body (2) is sleeved in the expansion slot (3), the bracing body (2) can slide in the expansion slot (3), and the bracing body (2) is in the shape of a strip; characterized in that: A mobile strip hole (4) is arranged in the middle of the bottom of the telescopic groove (3), and penetrates the bottom of the telescopic groove (3); a mobile rack (5) is installed in the mobile strip hole (4), and the bottom of the mobile rack (5) is fixedly connected with the upper part of the tensioning body (2); a center hole (6) is arranged in the middle of the bottom of the tensioning cylinder (1), and penetrates the bottom of the tensioning cylinder (1); a convex edge (7) is fixedly arranged on the outer circumferential edge of the upper end surface of the tensioning cylinder (1), and a fixed disc (8) is fixedly arranged in the middle of the bottom of the tensioning cylinder (1); a bearing (10) is fixedly installed in the center hole (6), and the bottom of a rotating shaft (9) is fixedly installed in the inner ring of the bearing (10); a slewing bearing (11) is fixedly installed on the upper end surface of the tensioning cylinder (1), and the inner ring surface of the slewing bearing (11) is provided with slewing teeth (12); four vertical transmission mechanisms (13) are arranged in a cross shape, the vertical transmission mechanisms (13) are vertically fixed on the inner bottom surface of the tensioning cylinder (1), the bottom of the vertical transmission mechanism (13) is located on one side of the mobile rack (5), and the upper part of the vertical transmission mechanism (13) extends to the inner side edge of the inner ring of the slewing bearing (11) through the edge of the fixed disc (8); a rotating disc (14) is fixedly arranged on the inner ring of the slewing bearing (11), the upper end of the rotating shaft (9) extends to the upper part of the rotating disc (14) through the center of the fixed disc (8), the center of the rotating disc (14) and the center of an end cover (15), and the rotating shaft (9) and the rotating disc (14) are fixedly connected through the end cover (15). ​ 2. A rotating internal strutting type fixing device for petrochemical pipelines according to claim 1, characterized in that: The fixed disc (8) comprises a fixed disc body (81), the fixed disc body (81) is circular, a through hole (82) is arranged in the center of the fixed disc body (81), and mounting holes (83) are arranged in the fixed disc body (81) in a cross shape.

3. A rotating internal strutting type fixing device for petrochemical pipelines according to claim 1, characterized in that: The outer ring of the slewing bearing (11) is fixed on the convex edge (7), and the inner ring of the slewing bearing (11) is provided with a gap with the upper end surface of the tensioning cylinder (1).

4. A rotating internal strutting type fixing device for petrochemical pipelines according to claim 1, characterized in that: The vertical transmission mechanism (13) comprises an axle seat (131), the axle seat (131) is fixedly arranged on the inner bottom surface of the tensioning cylinder (1), a vertical shaft (134) is fixedly installed in the bearing inner ring of the axle seat (131), a lower gear (132) is fixedly installed on the vertical shaft (134) of the upper part of the axle seat (131), an upper gear (133) is fixedly arranged on the upper end part of the vertical shaft (134), a roller bearing (135) is installed in the mounting hole (83), and the middle part of the vertical shaft (134) is fixedly installed in the inner ring of the roller bearing (135).

5. A rotating internal strutting type fixing device for petrochemical pipelines according to claim 4, characterized in that: The lower gear (132) is in meshing transmission with the tooth surface of the mobile rack (5), and the upper gear (133) is in meshing transmission with the slewing teeth (12) of the inner ring of the slewing bearing (11).

6. A rotating internal strutting type fixing device for petrochemical pipelines according to claim 1, characterized in that: The rotating disc (14) comprises a rotating disc body (141), which is disc-shaped, and convex columns (142) uniformly arranged around the bottom circumferential edge of the rotating disc body (141), and a shaft hole (143) arranged at the center of the rotating disc body (141).

7. A rotating internal strutting type fixing device for petrochemical pipelines according to claim 1, characterized in that: The upper end of the rotating shaft (9) extends to the upper portion of the rotating disc (14) through the center of the through hole (82), the shaft hole (143) and the center of the end cover (15).

8. A rotating internal strutting type fixing device for petrochemical pipelines according to claim 6, characterized in that: The convex columns (142) at the bottom of the rotating disc body (141) correspond to the upper and lower flange holes on the inner ring of the slewing bearing (11), and the convex columns (142) are fixed in the flange holes on the inner ring of the slewing bearing (11).

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