A feed rotary mechanism for a cold pilger mill

Abstract

The application belongs to the technical field of cold rolling pipe mill, and discloses a feeding rotary mechanism of a cold rolling pipe mill, which comprises a fixed sleeve, a plurality of slide rods are slidably connected to the circumferential outer wall of the fixed sleeve, the end portions of the slide rods penetrate through the fixed sleeve and extend into the fixed sleeve, the circumferential outer walls of the slide rods are fixedly connected with limiting sleeves, the circumferential outer walls of the slide rods are sleeved with springs, the inner ends of the slide rods are fixedly connected with hinge seats, the inner walls of the hinge seats are rotatably connected with rotating shafts, the circumferential outer walls of the rotating shafts are fixedly connected with positioning wheels, the end portions of the hinge seats are fixedly connected with guide blocks, and a plurality of driving assemblies are mounted on the outer wall of the fixed sleeve. In the application, the connecting plate moves to drive a plurality of extrusion blocks to move, the extrusion blocks extrude a plurality of guide blocks respectively, the guide blocks move to push the hinge seats to move, the hinge seats push the positioning wheels to clamp the outer walls of pipes of different sizes, and the plurality of positioning wheels are distributed at different positions of the outer wall of the pipe, so that the stability of pipe clamping can be improved.

Description

Technical Field

[0001] This invention relates to the field of cold rolling mills, and more specifically, to a feeding rotary mechanism for a cold rolling mill. Background Technology

[0002] Oil casing, also known as oil well casing, is a steel pipe used to support the wellbore of oil and gas wells, ensuring the smooth operation of the well during drilling and after completion. In the production of oil casing, a cold rolling mill is used to change the size or shape of the pipe. The cold rolling mill is a periodically operating mechanism. Its main characteristic is that during the rolling process, the work stand, along with the upper and lower rolls, is driven by a crank-connecting rod mechanism, allowing the billet to roll forward. The elastic deformation of the metal is used to roll the steel pipe, causing the billet to undergo rolling deformation during wall reduction and sizing by the mandrel. Due to the reciprocating motion of the stand, the billet is continuously fed and rotated under the action of the feeding and rotating mechanism, ultimately forming a finished steel pipe of the required specifications.

[0003] In existing technologies, the feeding rotary mechanism usually requires the pipe to be clamped by a chuck seat. However, the existing chuck seats can usually only clamp the straight end of the pipe, which results in poor overall balance of the pipe. Consequently, the pipe is not stable when rotating, which affects the subsequent processing of the pipe. In view of this, we propose a feeding rotary mechanism for a cold rolling mill. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a feeding rotary mechanism for a cold rolling mill, which improves the stability of pipe clamping by means of multiple positioning wheels distributed on the outer wall of the pipe.

[0005] To solve the above-mentioned technical problems, the present invention provides a feeding and rotating mechanism for a cold rolling mill, comprising a fixed sleeve, a plurality of sliding rods slidably connected to the outer circumference of the fixed sleeve, the ends of the sliding rods penetrating the fixed sleeve and extending into it, a limit sleeve fixedly connected to the outer circumference of each sliding rod, a spring sleeved on the outer circumference of each sliding rod, a hinge seat fixedly connected to the inner end of each sliding rod, a rotating shaft rotatably connected to the inner wall of each hinge seat, a positioning wheel fixedly connected to the outer circumference of each rotating shaft, a guide block fixedly connected to the end of the hinge seat, and a plurality of driving components installed on the outer wall of the fixed sleeve, the driving components being used to compress the guide block.

[0006] Furthermore, one end of the spring is fixedly connected to the limiting sleeve, and the other end of the spring is fixedly connected to the outer wall of the fixing sleeve.

[0007] Furthermore, the drive assembly includes multiple mounting plates, the ends of which are fixedly connected to a fixing sleeve. Hydraulic rods are fixedly connected to the inner walls of each mounting plate, and second sliding plates are fixedly connected to the output ends of each hydraulic rod. Connecting plates are fixedly connected to the ends of each second sliding plate.

[0008] Furthermore, a second sliding hole is provided on the outer wall of the connecting plate, and a plurality of extrusion blocks are fixedly connected to the outer wall of the connecting plate. A reserved groove is provided on the outer wall of the extrusion block, which is suitable for sliding the slide rod when the connecting plate moves. When the extrusion block moves, it extrudes the guide block.

[0009] Furthermore, the outer wall of the fixed sleeve is provided with a plurality of first sliding holes, and the end of the fixed sleeve is provided with a plurality of second sliding grooves. The first sliding plate is slidably connected to the inner wall of the first sliding hole, and the second sliding plate is slidably connected to the inner wall of the second sliding groove.

[0010] Furthermore, it also includes a mounting base, the top of which is fixedly connected to two support bases, the top of which is fixedly connected to a slide rail, the top of which is provided with a first slide groove, the inner wall of which is slidably connected to two sliders, the top of which is fixedly connected to a support plate.

[0011] Furthermore, two rotating sleeves are provided between the two slide rails. The rotating sleeves are rotatably connected to the support plate, and the inner wall of the rotating sleeve is fixedly connected to the outer wall of the fixed sleeve. A toothed ring is fixedly connected to the outer circumference of each rotating sleeve.

[0012] Furthermore, a first motor is fixedly connected to the top of one of the support plates, and a first support block is fixedly connected to the top of both of the support plates. A drive shaft is rotatably connected between the two first support blocks. The end of the drive shaft is fixedly connected to the first motor, and two first gears are fixedly connected to the outer circumference of the drive shaft. The first gears mesh with the gear ring.

[0013] Furthermore, a second motor is fixedly connected to the top of the mounting base, and two second support plates are fixedly connected to the top of the mounting base. An output shaft is rotatably connected between the two second support plates. The end of the output shaft is fixedly connected to the second motor, and a first bevel gear is fixedly connected to the outer circumference of the output shaft.

[0014] Furthermore, a toothed plate is fixedly connected to the outer wall of the fixed sleeve, and multiple connecting shafts are rotatably connected between the two support seats. A second gear is fixedly connected to the outer circumference of each connecting shaft, and the toothed plate meshes with the second gear. A second bevel gear is fixedly connected to the outer circumference of the connecting shaft, and the second bevel gear meshes with the first bevel gear. Multiple bushings are rotatably connected to the outer circumference of the output shaft, and the bushings are rotatably connected to the connecting shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. When the connecting plate moves, it drives multiple extrusion blocks to move. The extrusion blocks extrude pressure on multiple guide blocks. When the guide blocks move, they push the hinge seat to move. The hinge seat pushes the positioning wheels to clamp the outer walls of pipes of different sizes. The multiple positioning wheels are distributed at different positions on the outer wall of the pipe, which can improve the stability of the pipe clamping.

[0017] 2. The positioning wheels, driven by the hinge and the pressing block, can flexibly adapt to pipes of different sizes, improving the versatility and flexibility of the equipment.

[0018] 3. The rotation of the drive shaft, the first gear, the gear ring, and the rotating sleeve is driven by the first motor, which ultimately drives the fixed sleeve and the pipe to rotate. This gear transmission method has the characteristics of high transmission efficiency and good stability, which can ensure the accuracy and stability of the pipe during the rotation process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the mounting structure of the rotating sleeve of the present invention;

[0022] Figure 3 This is a schematic diagram of the mounting structure of the connecting shaft of the present invention;

[0023] Figure 4 This is a schematic diagram of the installation structure of the positioning wheel of the present invention;

[0024] Figure 5 This is a schematic diagram of the installation structure of the hydraulic rod of the present invention;

[0025] Figure 6 This is a schematic diagram of the installation structure of the connecting plate of the present invention.

[0026] The following are the labeling symbols in the diagram: 1. Mounting base; 2. Support base; 3. Slide rail; 4. First slide groove; 5. Slider; 6. Support plate; 7. Rotating sleeve; 8. Gear ring; 9. First motor; 10. First support block; 11. Drive shaft; 12. First gear; 13. Second motor; 14. Second support plate; 15. Output shaft; 16. Bushing; 17. First bevel gear; 18. Connecting shaft; 19. Second bevel gear; 20. Second gear; 21. Gear plate; 22. Fixing sleeve; 23. First sliding hole; 24. Second slide groove; 25. Mounting plate; 26. Hydraulic rod; 27. Connecting plate; 28. First sliding plate; 29. ​​Second sliding plate; 30. Second sliding hole; 31. Slide rod; 32. Limiting sleeve; 33. Hinge seat; 34. Rotating shaft; 35. Positioning wheel; 36. Guide block; 37. Extrusion block; 38. Reserved groove; 39. Spring. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0030] like Figure 1 , Figures 4-6As shown, a feeding rotary mechanism for a cold rolling mill includes a mounting base 1 and a fixed sleeve 22. Multiple sliding rods 31 are slidably connected to the outer circumference of the fixed sleeve 22. The ends of the sliding rods 31 penetrate the fixed sleeve 22 and extend into it. Limiting sleeves 32 are fixedly connected to the outer circumference of each sliding rod 31. Springs 39 are fitted onto the outer circumference of each sliding rod 31. Hinge seats 33 are fixedly connected to the inner ends of each sliding rod 31. Rotating shafts 34 are rotatably connected to the inner walls of each hinge seat 33. Positioning wheels 35 are fixedly connected to the outer circumference of each rotating shaft 34. Guide blocks 36 are fixedly connected to the ends of the hinge seats 33. Multiple driving components are installed on the outer wall of the fixed sleeve 22. The driving components are used to compress the guide blocks 36. One end of each spring 39 is fixedly connected to the limiting sleeve 32, and the other end of each spring 39 is fixedly connected to the outer wall of the fixed sleeve 22.

[0031] like Figures 4-6 As shown, the drive assembly includes multiple mounting plates 25. The ends of the mounting plates 25 are fixedly connected to the fixing sleeves 22. Hydraulic rods 26 are fixedly connected to the inner walls of the mounting plates 25. The output ends of the hydraulic rods 26 are fixedly connected to the second slide plates 29. The ends of the second slide plates 29 are fixedly connected to the connecting plates 27.

[0032] The outer wall of the connecting plate 27 is provided with a second sliding hole 30, and a plurality of extrusion blocks 37 are fixedly connected to the outer wall of the connecting plate 27. The outer wall of the extrusion block 37 is provided with a reserved groove 38, which is suitable for sliding into the slide rod 31 when the connecting plate 27 moves. When the extrusion block 37 moves, it extrudes the guide block 36.

[0033] The outer wall of the fixed sleeve 22 is provided with a plurality of first sliding holes 23, and the end of the fixed sleeve 22 is provided with a plurality of second sliding grooves 24. The first sliding plate 28 is slidably connected to the inner wall of the first sliding hole 23, and the second sliding plate 29 is slidably connected to the inner wall of the second sliding groove 24.

[0034] When the connecting plate 27 moves, it drives multiple pressing blocks 37 to move. The pressing blocks 37 press against multiple guide blocks 36. When the guide blocks 36 move, they push the hinge 33 to move. The hinge 33 pushes the positioning wheels 35 to clamp the outer walls of pipes of different sizes. The multiple positioning wheels 35 are distributed at different positions on the outer walls of the pipes, which can improve the stability of the pipe clamping. The hydraulic rod 26 pushes the second sliding plate 29 and the connecting plate 27, which in turn drives the pressing blocks 37 to press against the guide blocks 36, so that the positioning wheels 35 can fit tightly against the outer walls of pipes of different sizes, achieving a stable clamping of the pipes. The spring 39 ensures that the sliding rod 31 and the positioning wheels 35 have a certain buffering and self-adaptive ability when subjected to external forces, further improving the adaptability to pipes of different sizes.

[0035] like Figure 1 and Figure 2As shown, the top of the mounting base 1 is fixedly connected to two support bases 2, and the top of each support base 2 is fixedly connected to a slide rail 3. The top of each slide rail 3 is provided with a first slide groove 4, and the inner wall of each first slide groove 4 is slidably connected to two sliders 5. The top of each slider 5 is fixedly connected to a support plate 6.

[0036] like Figure 2 As shown, two rotating sleeves 7 are provided between the two slide rails 3. The rotating sleeves 7 are rotatably connected to the support plates 6 respectively. The inner wall of the rotating sleeve 7 is fixedly connected to the outer wall of the fixed sleeve 22. A gear ring 8 is fixedly connected to the outer circumference of each rotating sleeve 7. A first motor 9 is fixedly connected to the top of one of the support plates 6. A first support block 10 is fixedly connected to the top of each of the two support plates 6. A drive shaft 11 is rotatably connected between the two first support blocks 10. The end of the drive shaft 11 is fixedly connected to the first motor 9. Two first gears 12 are fixedly connected to the outer circumference of the drive shaft 11. The first gears 12 mesh with the gear ring 8. The first motor 9 drives the drive shaft 11, the first gears 12, the gear ring 8 and the rotating sleeves 7 to rotate, which ultimately drives the fixed sleeve 22 and the pipe to rotate, thus ensuring the stability of the pipe during rotation.

[0037] like Figure 1 and Figure 3 As shown, a second motor 13 is fixedly connected to the top of the mounting base 1, and two second support plates 14 are fixedly connected to the top of the mounting base 1. An output shaft 15 is rotatably connected between the two second support plates 14. The end of the output shaft 15 is fixedly connected to the second motor 13, and a first bevel gear 17 is fixedly connected to the outer circumference of the output shaft 15.

[0038] The second motor 13 drives the second bevel gear 19 and the second gear 20 to rotate through the output shaft 15 and the first bevel gear 17, and then drives the fixed sleeve 22 and the pipe to move back and forth through the toothed plate 21.

[0039] A toothed plate 21 is fixedly connected to the outer wall of the fixed sleeve 22. Multiple connecting shafts 18 are rotatably connected between the two support seats 2. A second gear 20 is fixedly connected to the outer circumference of each connecting shaft 18. The toothed plate 21 meshes with the second gear 20. A second bevel gear 19 is fixedly connected to the outer circumference of the connecting shaft 18. The second bevel gear 19 meshes with the first bevel gear 17. Multiple bushings 16 are rotatably connected to the outer circumference of the output shaft 15. The bushings 16 are rotatably connected to the connecting shaft 18.

[0040] In use, the pipe is placed inside the fixed sleeve 22, and multiple hydraulic rods 26 respectively drive the second slide plate 29 to slide along the inner wall of the first slide groove 4 on the fixed sleeve 22. The second slide plate 29 drives the connecting plate 27 to move, and the connecting plate 27 drives the first slide plate 28 to slide along the inner wall of the first slide hole 23.

[0041] When the connecting plate 27 moves, it drives multiple extrusion blocks 37 to move. The extrusion blocks 37 extrude pressure on multiple guide blocks 36 respectively. When the guide blocks 36 move, they push the hinge seat 33 to move. The hinge seat 33 pushes the positioning wheel 35 to clamp the outer wall of the pipe of different sizes. The multiple positioning wheels 35 are distributed at different positions on the outer wall of the pipe, which can improve the stability of the pipe clamping. At this time, the slide rod 31 slides along the inner wall of the fixed sleeve 22, so that the spring 39 is stretched.

[0042] The first motor 9 drives the drive shaft 11 to rotate, the drive shaft 11 drives the first gear 12 to rotate, the first gear 12 drives the gear ring 8 to rotate, the gear ring 8 drives the rotating sleeve 7 to rotate, and the rotating sleeve 7 drives the fixed sleeve 22 to rotate, thereby enabling the pipe to rotate.

[0043] The second motor 13 drives the output shaft 15 to rotate, which in turn drives the first bevel gear 17 to rotate, which in turn drives the second bevel gear 19 to rotate, which in turn drives multiple second gears 20 to rotate, which in turn drives the gear plate 21 to move, thereby driving the fixed sleeve 22 to move, so that the pipe can move back and forth.

[0044] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feed rotary of a cold pilger mill, comprising a stationary sleeve (22), characterized in that: The fixed sleeve (22) is slidably connected with a plurality of slide rods (31), the end of the slide rod (31) penetrates the fixed sleeve (22) and extends to the inside, the outer wall of the slide rod (31) is fixedly connected with a limiting sleeve (32), the outer wall of the slide rod (31) is sleeved with a spring (39), the inner end of the slide rod (31) is fixedly connected with a hinge base (33), the inner wall of the hinge base (33) is rotatably connected with a rotating shaft (34), the outer wall of the rotating shaft (34) is fixedly connected with a positioning wheel (35), the end of the hinge base (33) is fixedly connected with a guide block (36), a plurality of drive assemblies are installed on the outer wall of the fixed sleeve (22), and the drive assemblies are used to extrude the guide block (36); One end of the spring (39) is fixedly connected with the limiting sleeve (32), and the other end of the spring (39) is fixedly connected with the outer wall of the fixed sleeve (22); The drive assembly comprises a plurality of mounting plates (25), the end of the mounting plate (25) is fixedly connected with the fixed sleeve (22), the inner wall of the mounting plate (25) is fixedly connected with a hydraulic rod (26), the output end of the hydraulic rod (26) is fixedly connected with a second sliding plate (29), and the end of the second sliding plate (29) is fixedly connected with a connecting plate (27); The outer wall of the connecting plate (27) is provided with a second sliding hole (30), a plurality of extrusion blocks (37) are fixedly connected to the outer wall of the connecting plate (27), the outer wall of the extrusion block (37) is provided with a reserved groove (38), the reserved groove (38) is suitable for sliding into the slide rod (31) when the connecting plate (27) moves, and the extrusion block (37) extrudes the guide block (36) when moving; The outer wall of the fixed sleeve (22) is provided with a plurality of first sliding holes (23), the end of the fixed sleeve (22) is provided with a plurality of second sliding grooves (24), the first sliding plate (28) is slidably connected with the inner wall of the first sliding hole (23), and the second sliding plate (29) is slidably connected with the inner wall of the second sliding groove (24).

2. The feed rotary of a cold pilger mill according to claim 1, characterized in that It also includes a mounting seat (1), the top of the mounting seat (1) is fixedly connected with two support seats (2), the top of the support seat (2) is fixedly connected with a sliding rail (3), the top of the sliding rail (3) is provided with a first sliding groove (4), the inner wall of the first sliding groove (4) is slidably connected with two sliding blocks (5), and the top of the sliding block (5) is fixedly connected with a supporting plate (6).

3. The feed rotary of a cold pilger mill according to claim 2, characterized in that: Two rotating sleeves (7) are arranged between the two sliding rails (3), the rotating sleeve (7) is rotatably connected with the supporting plate (6), the inner wall of the rotating sleeve (7) is fixedly connected with the outer wall of the fixed sleeve (22), and the outer wall of the rotating sleeve (7) is fixedly connected with a gear ring (8).

4. The feed rotary of a cold pilger mill according to claim 3, characterized in that: One of said support plate (6) top fixedly connected with a first motor (9), wherein two of said support plate (6) top fixedly connected with a first block (10), two said first block (10) between the driving shaft (11) is rotatably connected, the driving shaft (11) end and first motor (9) fixedly connected, the driving shaft (11) circumferential outer wall fixedly connected with two first gear (12), the first gear (12) and gear (8) meshing.

5. The feed rotary of a cold pilger mill according to claim 4, characterized in that: The mounting seat (1) top fixedly connected with a second motor (13), the mounting seat (1) top fixedly connected with two second branch plate (14), two said second branch plate (14) between the output shaft (15) is rotatably connected, the output shaft (15) end and second motor (13) fixedly connected, the output shaft (15) circumferential outer wall fixedly connected with a first bevel gear (17).

6. The feed rotary of a cold pilger mill according to claim 5, characterized in that: The fixed sleeve (22) outer wall fixedly connected with a gear plate (21), two said support seat (2) between the rotatably connected with a plurality of connecting shaft (18), the connecting shaft (18) circumferential outer wall fixedly connected with a second gear (20), the gear plate (21) and second gear (20) meshing, the connecting shaft (18) circumferential outer wall fixedly connected with a second bevel gear (19), the second bevel gear (19) and first bevel gear (17) meshing, the output shaft (15) circumferential outer wall rotatably connected with a plurality of shaft sleeve (16), the shaft sleeve (16) and connecting shaft (18) rotatably connected.

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