Fixture for machining seamless steel pipe

Abstract

The utility model discloses a clamp for processing a seamless steel tube, which is characterized in that a plurality of sliding blocks are arranged on a mounting seat, a clamping mechanism I and a clamping mechanism II are respectively arranged on the sliding blocks, and a pitch changing mechanism for driving the plurality of sliding blocks to carry out equidistant pitch changing is further arranged. And the clamping positions of the clamping mechanism I and the clamping mechanism II on the seamless steel pipe are dispersed at equal intervals through the pitch changing mechanism, so that the gravity stress distribution on the seamless steel pipe is more uniform.

Description

Technical Field

[0001] The utility model relates to the field of clamps, and more specifically, to a clamp for processing seamless steel pipes. Background Art

[0002] Seamless steel pipes have a hollow cross-section and are mostly used as pipelines for transporting fluids, such as oil, natural gas, coal gas, water, and certain solid materials. Currently, a loading fixture is required for the processing and loading of seamless steel pipes. However, existing loading fixtures have difficulty clamping seamless steel pipes of different lengths and have poor clamping stability. Furthermore, existing loading fixtures are difficult to move during actual use, limiting their practicality.

[0003] In order to solve the above problems, the Chinese patent with publication number CN219098023U discloses a seamless steel pipe feeding fixture, which includes a mounting frame consisting of a column and a horizontal plate. Electric push rods are provided on both the left and right sides of the bottom of the fixed horizontal plate. The output end of the left electric push rod is provided with a connection frame with one end fixedly connected to the output end of the right electric push rod. The seamless steel pipe feeding fixture, through the cooperation of servo motor 1, second bevel gear, first bevel gear and second threaded rod, enables two threaded blocks and limit plates to move relative or opposite to each other to clamp the seamless steel pipe, thereby achieving the clamping of seamless steel pipes of different lengths. Then, through the cooperation of micro electric hydraulic push rod and extrusion block, the inner wall of the seamless steel pipe is squeezed and limited, thereby improving the clamping stability of the seamless steel pipe and improving the practicality of the equipment.

[0004] However, the above-mentioned clamp can only provide fixed support for the two ends of the seamless steel pipe. If the seamless steel pipe is long, the weight stress will be unevenly distributed after lifting, which may lead to a decrease in the structural stability of the steel pipe. It may also cause cracks due to stress concentration somewhere in the middle section, and even cause the seamless steel pipe to break.

[0005] Based on the above, the purpose of the present invention is to provide a clamp for processing seamless steel pipes to solve the above problems. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a clamp for processing seamless steel pipes. The present invention arranges multiple sliders on the mounting seat, and then arranges a clamping mechanism 1 and a clamping mechanism 2 on the sliders respectively. A variable distance mechanism is also provided to drive the sliders to perform equidistant distance changes. The variable distance mechanism makes the clamping positions of the clamping mechanism 1 and the clamping mechanism 2 on the seamless steel pipe equidistantly dispersed, so that the gravity stress distribution on the seamless steel pipe is more uniform.

[0007] The above technical purpose of the present utility model is achieved through the following technical solutions: a fixture for processing seamless steel pipes, including a mounting frame, a plurality of electric push rods are provided on the mounting frame, the protruding ends of the electric push rods are fixedly connected to the mounting seats, a plurality of sliders are slidably connected to the mounting seats, a clamping mechanism 1 is provided on the sliders located at the outermost ends of the two ends, and a clamping mechanism 2 is provided on the other sliders, the clamping mechanism 1 can fix the two ends of the seamless steel pipe, the clamping mechanism 2 can clamp and fix the outer wall of the seamless steel pipe, and the mounting seat is provided with a variable distance mechanism for driving multiple sliders to be equidistantly expanded.

[0008] By adopting the above technical solution, when it is necessary to load the seamless steel pipe, the mounting frame is moved to the seamless steel pipe so that the seamless steel pipe is located directly below the clamping mechanism 2, and then the positions of the multiple sliders are adjusted by the variable distance mechanism so that the multiple clamping mechanisms 1 and 2 are equidistantly expanded to the appropriate position, and then the mounting seat is driven down to the appropriate height by the electric push rod, and then the two ends of the seamless steel pipe are fixed by the clamping mechanisms 1 on both sides, and the outer wall of the seamless steel pipe is clamped and fixed by the multiple clamping mechanisms 2, and then the seamless steel pipe can be driven to rise by the electric push rod, and then the seamless steel pipe can be loaded. With this arrangement, the clamping mechanisms 1 on both sides and the multiple clamping mechanisms 2 will respectively fix the two ends and multiple positions of the seamless steel pipe, the gravity stress is more evenly dispersed, and the clamping effect is better.

[0009] The utility model is further configured as follows: the pitch changing mechanism includes a driving roller rotatably connected to the mounting seat, multiple sliders are fixedly connected to driving rods, the driving roller is provided with driving grooves for multiple driving rods to be inserted and moved, the multiple driving grooves are inclined in the expanded state, and the inclination angles of the multiple driving grooves gradually increase in the direction extending from the center to both sides, and the mounting seat is provided with a driving mechanism that drives the driving roller to rotate.

[0010] The utility model is further configured as follows: the driving mechanism includes a motor 1 fixedly connected to the mounting seat, the motor 1 is located in the middle section of the mounting seat, a driving shaft with one end fixedly connected to the output shaft of the motor 1 is provided, the other end of the driving shaft is fixedly connected to a sprocket 1, the driving roller is fixedly connected to a sprocket 2, and a chain is sleeved between the sprocket 1 and the sprocket 2.

[0011] The utility model is further configured as follows: the clamping mechanism 1 includes a clamping block fixedly connected to the slider, the clamping block is provided with a cavity and a second motor, a driving disk is rotatably connected in the cavity, a plurality of linkage grooves are provided on the driving disk, the linkage grooves are arranged in an arc shape, a linkage rod is slidably connected in the linkage groove, the linkage rod extends out of the cavity and is fixedly connected to a clamp, the clamping block is provided with a guide groove for the linkage rod to pass through and move, and the output shaft of the second motor is fixedly connected to the driving disk.

[0012] The utility model is further configured as follows: the second clamping mechanism includes a mounting box fixedly connected to the slider, the mounting box is provided with a third motor, the output shaft of the third motor is provided with a bidirectional screw with one end fixedly connected thereto, the other end of the bidirectional screw is rotatably connected to the mounting box, and the left-handed thread section and the right-handed thread section of the bidirectional screw are both threadedly connected with clamping claws.

[0013] The utility model is further configured such that the clamping claws on the left-handed thread section and the right-handed thread section of the bidirectional screw are staggered.

[0014] In summary, the present invention has the following beneficial effects:

[0015] The utility model arranges a plurality of sliders on a mounting seat, and then arranges a clamping mechanism 1 and a clamping mechanism 2 on the sliders respectively, and further arranges a distance-changing mechanism for driving the sliders to change the distances equidistantly. The distance-changing mechanism enables the clamping positions of the clamping mechanism 1 and the clamping mechanism 2 on the seamless steel pipe to be equidistantly dispersed, so that the gravity stress distribution on the seamless steel pipe is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model patent Figure 1 , showing the overall structure of the utility model;

[0017] Figure 2 for Figure 1 The enlarged view of part A shows the structure of the clamping mechanism 1;

[0018] Figure 3 This is a schematic diagram of the overall structure of this utility model patent Figure 2 ,The sliders in the figure are in the closed state;

[0019] Figure 4 This is a schematic diagram of the overall structure of this utility model patent Figure 3 ,The slider in the figure is in the expanded state;

[0020] Figure 5 This is a schematic diagram of the overall structure of this utility model patent Figure 4 , showing the shapes of linkage groove and guide groove;

[0021] Figure 6This is a schematic diagram of the overall structure of this utility model patent Figure 5 , showing the structure of the clamping mechanism 2.

[0022] In the figure: 1. Mounting frame; 2. Electric push rod; 3. Mounting seat; 4. Slider; 5. Driving roller; 6. Driving rod; 7. Driving slot; 8. Motor 1; 9. Driving shaft; 10. Chain; 11. Clamp; 12. Motor 2; 13. Driving disk; 14. Linkage slot; 15. Linkage rod; 16. Chuck; 17. Guide slot; 18. Mounting box; 19. Motor 3; 20. Bidirectional screw; 21. Clamp. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, unless there is a conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood by those skilled in the art in specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings.

[0027] A fixture for processing seamless steel pipes, such as Figures 1-6 As shown, it includes a mounting frame 1, on which are mounted several electric push rods 2, on which protruding ends of several electric push rods 2 are fixedly connected mounting seats 3, on which are slidably connected several sliders 4, and on which the sliders 4 located at the outermost ends are provided with a clamping mechanism 1, and on which the other sliders 4 are provided with a clamping mechanism 2, and the clamping mechanism 1 can fix the two ends of the seamless steel pipe, and the clamping mechanism 2 can clamp and fix the outer wall of the seamless steel pipe, and the mounting seat 3 is provided with a variable pitch mechanism for driving multiple sliders 4 to be equidistantly expanded.

[0028] Furthermore, the pitch changing mechanism includes a driving roller 5 rotatably connected to the mounting seat 3, and multiple sliders 4 are fixedly connected to driving rods 6. The driving roller 5 is provided with driving grooves 7 for inserting and moving multiple driving rods 6. The multiple driving grooves 7 are inclined in the expanded state, and the multiple driving grooves 7 are inclined in opposite directions from the center to both sides, and the inclination angle gradually increases. The mounting seat 3 is provided with a driving mechanism for driving the driving roller 5 to rotate.

[0029] Furthermore, the driving mechanism includes a motor 8 fixedly connected to the mounting base 3, and the motor 8 is located in the middle section of the mounting base 3. The output shaft of the motor 8 is provided with a drive shaft 9 fixedly connected to it at one end (a reducer can be added between the motor 1 and the drive shaft to increase the torque and reduce the speed of the driving roller). The other end of the drive shaft 9 is fixedly connected to a sprocket 1, and the driving roller 5 is fixedly connected to a sprocket 2, and a chain 10 is provided between the sprocket 1 and the sprocket 2.

[0030] Furthermore, the clamping mechanism 1 includes a clamping block 11 fixedly connected to the slider 4, and the clamping block 11 is provided with a cavity and a motor 2 12. A drive disk 13 is rotatably connected in the cavity, and a plurality of linkage grooves 14 are provided on the drive disk 13. The linkage groove 14 is arranged in an arc shape, and a linkage rod 15 is slidably connected in the linkage groove 14. The linkage rod 15 extends out of the cavity and is fixedly connected to the clamp 16. A guide groove 17 is provided on the clamping block 11 for the linkage rod 15 to pass through and move. The part of the linkage rod located in the guide groove is arranged in a rectangular shape, and the output shaft of the motor 2 12 is fixedly connected to the drive disk 13.

[0031] Furthermore, the second clamping mechanism includes a mounting box 18 fixedly connected to the slider 4, a motor 3 19 is installed on the mounting box 18, and a bidirectional screw rod 20 is provided on the output shaft of the motor 3 19, one end of which is fixedly connected thereto, and the other end of the bidirectional screw rod 20 is rotatably connected to the mounting box 18, and the left-handed thread section and the right-handed thread section of the bidirectional screw rod 20 are both threadedly connected with a clamping claw 21, and the part of the clamping claw located in the mounting box is in contact with the inner wall of the mounting box.

[0032] Furthermore, the clamping jaws 21 on the left-handed thread section and the right-handed thread section of the bidirectional screw rod 20 are staggered.

[0033] Working principle: When it is necessary to load or move the seamless steel pipe, move the mounting frame 1 to the seamless steel pipe so that the seamless steel pipe is located directly below the clamping mechanism 2, and then drive the driving roller 5 to rotate through the motor 1 8, drive shaft 9, sprocket 1, chain 10, and sprocket 2 in sequence. The driving roller 5 then adjusts the positions of multiple sliders 4 through the driving rod 6 and the driving groove 7, so that multiple clamping mechanisms 1 and clamping mechanisms 2 are equidistantly expanded to appropriate positions, and then the mounting seat 3 is driven down to an appropriate height by the electric push rod 2, and then the multiple sliders 4 are driven inward by the above method until the clamping blocks on both sides abut against the two ends of the seamless steel pipe.

[0034] Then, the motor 2 12 drives the driving disk 13 to rotate, and the driving disk 13 drives the linkage rod 15 to move along the trajectory of the guide groove 17 until the multiple clamps 16 contact the inner wall of the seamless steel pipe and fix it. Then, the motor 3 19 and the bidirectional screw 20 drive the jaws 21 on both sides to gather inward until the jaws 21 abut against the outer wall of the seamless steel pipe and clamp it. Then, the electric push rod 2 can be used to drive the seamless steel pipe to rise, and then the seamless steel pipe can be loaded or moved. With this arrangement, the clamping mechanism 1 on both sides and the multiple clamping mechanisms 2 can respectively fix the two ends and multiple positions of the pipe body of the seamless steel pipe, so that the gravity stress is more evenly dispersed and the clamping effect is better.

[0035] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A fixture for processing seamless steel pipes, comprising a mounting frame (1), a plurality of electric push rods (2) being provided on the mounting frame (1), and a mounting seat (3) being fixedly connected to the protruding end of the electric push rods (2), characterized in that: The mounting seat (3) is slidably connected to a plurality of sliders (4), the sliders (4) located at the outermost ends are provided with a clamping mechanism 1, and the other sliders (4) are provided with a clamping mechanism 2, the clamping mechanism 1 can fix the two ends of the seamless steel pipe, and the clamping mechanism 2 can clamp and fix the outer wall of the seamless steel pipe, and the mounting seat (3) is provided with a variable pitch mechanism for driving the plurality of sliders (4) to be equidistantly spread out.

2. A seamless steel pipe processing fixture according to claim 1, characterized in that: The pitch-changing mechanism comprises a driving roller (5) rotatably connected to the mounting seat (3); a plurality of the sliders (4) are fixedly connected to driving rods (6); the driving roller (5) is provided with driving grooves (7) for inserting and moving the plurality of driving rods (6); the plurality of driving grooves (7) are inclined in an unfolded state, and the inclination angles of the plurality of driving grooves (7) gradually increase in a direction extending from the center to both sides; and a driving mechanism for driving the driving roller (5) to rotate is provided on the mounting seat (3).

3. A seamless steel pipe processing fixture according to claim 2, characterized in that: The driving mechanism comprises a motor 1 (8) fixedly connected to the mounting seat (3), the motor 1 (8) being located in the middle of the mounting seat (3), a driving shaft (9) having one end fixedly connected thereto being provided on the output shaft of the motor 1 (8), the other end of the driving shaft (9) being fixedly connected to a sprocket 1, the driving roller (5) being fixedly connected to a sprocket 2, and a chain (10) being sleeved between the sprocket 1 and the sprocket 2.

4. The fixture for processing seamless steel pipes according to claim 1, characterized in that: The clamping mechanism 1 comprises a clamping block (11) fixedly connected to the slider (4), the clamping block (11) is provided with a cavity and a second motor (12), a driving disk (13) is rotatably connected in the cavity, a plurality of linkage grooves (14) are provided on the driving disk (13), the linkage grooves (14) are arranged in an arc shape, a linkage rod (15) is slidably connected in the linkage groove (14), the linkage rod (15) extends out of the cavity and is fixedly connected to a clamp (16), a guide groove (17) is provided on the clamping block (11) for the linkage rod (15) to pass through and move, and the output shaft of the second motor (12) is fixedly connected to the driving disk (13).

5. The fixture for processing seamless steel pipes according to claim 1, characterized in that: The second clamping mechanism comprises a mounting box (18) fixedly connected to the slider (4); a third motor (19) is provided on the mounting box (18); a bidirectional screw rod (20) having one end fixedly connected thereto is provided on the output shaft of the third motor (19); the other end of the bidirectional screw rod (20) is rotatably connected to the mounting box (18); and a clamping claw (21) is threadedly connected to both the left-handed thread section and the right-handed thread section of the bidirectional screw rod (20).

6. The fixture for processing seamless steel pipes according to claim 5, characterized in that: The clamping claws (21) on the left-handed thread section and the right-handed thread section of the bidirectional screw rod (20) are staggered.

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