Large-diameter seamless steel pipe straightening device

Abstract

The utility model belongs to the technical field of steel pipe machining, and particularly relates to a large-diameter seamless steel pipe straightening device which comprises a mounting plate, and a first servo motor is mounted on the mounting plate. An output shaft of the first servo motor is connected with a worm; a worm gear is connected to the worm in a meshed manner; a rotating shaft is arranged on the worm gear; the rotating shaft is rotationally connected to the mounting plate; the sliding block drives the supporting plate to be opened in an umbrella shape through the connecting rod and the second pin shaft frame, comprehensive supporting of the interior of the steel pipe is achieved, the supporting mode is more stable than single-point or few-point supporting, the steel pipe can be effectively prevented from deforming or shifting in the straightening process, the supporting plate is comprehensively supported in the steel pipe, and the problem that when the steel pipe is straightened, the steel pipe cannot be straightened is solved. The problems that an area clamped by a clamp cannot be straightened, and the area clamped by the clamp cannot be straightened, so that after straightening is completed, the area needs to be subjected to additional treatment or secondary straightening are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steel pipe processing, and specifically relates to a large-diameter seamless steel pipe straightening device. BACKGROUND

[0002] Large-diameter seamless steel pipes are widely used in many fields due to their excellent performance. For example, in the petroleum and chemical industry, they are used to transport media such as oil and natural gas; in the power industry, they are mainly used in power transmission lines, power generation equipment and other systems; in addition, they also play an important role in water conservancy projects, urban water supply systems, mechanical manufacturing industries, aerospace and marine engineering and other fields.

[0003] When large-diameter seamless steel pipes are processed, straightening work needs to be done, and a large-diameter seamless steel pipe straightening device is a mechanical equipment specially used for straightening large-diameter seamless steel pipes, mainly used for straightening large-diameter seamless steel pipes to ensure that their diameter, roundness and other parameters meet the requirements.

[0004] At present, in the prior art, when fixing the steel pipe, an external clamp is needed to clamp the outside of the steel pipe. The clamped area of the steel pipe cannot be straightened during straightening. Since the clamped area cannot be straightened, additional processing or secondary straightening is needed after straightening, which not only increases the workload, but also may affect the overall quality of the steel pipe. During secondary straightening, the already straightened part needs to be processed again, which may cause additional stress or damage to the steel pipe, thereby affecting its service life and performance. Therefore, a large-diameter seamless steel pipe straightening device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art, the utility model provides a large-diameter seamless steel pipe straightening device.

[0006] The utility model solves the technical problems and adopts the technical scheme: a large-diameter seamless steel pipe straightening device, comprising a mounting plate, a first servo motor is installed on the mounting plate; a worm is connected to the output shaft of the first servo motor; a worm wheel is meshed and connected to the worm; a rotating shaft is arranged on the worm wheel; the rotating shaft is rotatably connected to the mounting plate; one end of the rotating shaft is connected to a lead screw; two sliding blocks are threadedly connected to the lead screw; four pin shaft racks one are installed on the sliding blocks; a connecting rod is hingedly connected to the pin shaft rack one; the other end of the connecting rod is hingedly connected to a pin shaft rack two; two pin shaft racks two are installed with the same support plate.

[0007] Preferably, the bottom of the mounting plate is provided with a supporting bottom plate; the end of the supporting bottom plate away from the mounting plate is provided with a mounting rack; the mounting rack is provided with a sliding groove; the sliding groove is slidably connected with a sliding block; the top of the mounting rack is provided with a second servo motor; the output shaft of the second servo motor is provided with a first screw rod; the top and bottom of the first screw rod are rotatably connected to the mounting rack; the first screw rod is threadedly connected with a lifting rod; the driving sliding block is mounted in the driving sliding groove; and the two driving sliding blocks are fixed to the bottom of the same mounting rack.

[0008] Preferably, the sliding block is mounted at the two ends of the lifting rod; the end of the lifting rod away from the first screw rod is slidably connected with a first sliding rod; and the two ends of the first sliding rod are fixed to the top and bottom of the mounting rack.

[0009] Preferably, the bottom of the lifting rod is provided with a connecting rack; and the connecting rack is rotatably connected with a straightening roller.

[0010] Preferably, the supporting bottom plate is provided with a mounting box; the mounting box is provided with four hydraulic telescopic rods; the top of the four hydraulic rods is connected with a same supporting rack; and the mounting rack is provided with six rollers.

[0011] Preferably, the second servo motor is provided with a motor fixing rack; and the second servo motor is fixed to the mounting rack through the motor fixing rack.

[0012] Preferably, the bottom of the supporting bottom plate is provided with four supporting columns; and the bottom of the supporting column is provided with an antiskid pad.

[0013] The beneficial effects of the present application are as follows:

[0014] The utility model discloses a large -diameter seamless steel pipe straightening device, and the supporting plate is opened umbrella -shaped through connecting rod and pin axle frame two drive of sliding block, realizes the overall support to the steel pipe inside, and this kind of support mode is more stable than single point or a few point support, can effectively prevent the deformation or displacement of steel pipe in straightening process, and the supporting plate is supported in the steel pipe inside, solves the problem that the area held by the holder cannot be straightened when the steel pipe is straightened, and thus needs to carry out additional processing or secondary straightening to these areas after straightening is completed.

[0015] The utility model discloses a large -diameter seamless steel pipe straightening device, and the sliding block can be freely moved on the screw rod, and the opening degree and support force of the supporting plate can be flexibly controlled by adjusting the rotation angle and speed of the first servo motor, so that the device can adapt to steel pipes of different diameters. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0017] In the drawings:

[0018] Figure 1 is a perspective view of the present application;

[0019] Figure 2 is a perspective view of the mounting plate in the present application;

[0020] Figure 3 is a perspective view of the mounting plate section in the present application;

[0021] Figure 4 is a perspective view of the mounting frame in the present application.

[0022] Legend:

[0023] 1, mounting plate; 2, first servo motor; 3, worm; 4, worm gear; 61, rotating shaft; 62, screw rod; 63, sliding block; 64, pin shaft bracket one; 65, connecting rod; 66, pin shaft bracket two; 67, support plate; 7, support base plate; 8, hydraulic telescopic rod; 9, support frame; 10, roller; 11, second servo motor; 12, mounting frame; 13, sliding groove; 14, sliding block; 15, first screw rod; 16, first sliding rod; 17, lifting rod; 18, connecting frame; 19, straightening roller; 20, motor fixing frame; 21, support column; 22, non-slip pad; 23, driving sliding groove; 24, driving sliding connecting block; 25, mounting box. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Specific embodiments are given below.

[0026] Please refer to Figures 1-4The utility model provides a large -diameter seamless steel pipe straightening device, including the mounting panel 1, the mounting panel 1 is installed with the first servo motor 2, the first servo motor 2 output shaft is connected with the worm 3, the worm 3 is connected with the worm wheel 4 on meshing, be provided with the rotating shaft 61 on the worm wheel 4, the rotating shaft 61 is rotatably connected in the mounting panel 1, one end of rotating shaft 61 is connected with the lead screw 62, two sliding blocks 63 are connected in screw on the lead screw 62, four pin shaft frames one 64 are installed on the sliding block 63, the pin shaft frame one 64 is hinged with the connecting rod 65, the other end of connecting rod 65 is hinged with the pin shaft frame two 66, and two pin shaft frames two 66 are installed with same support plate 67,

[0027] When working, the steel pipe is placed on the support plate 67, and then the first servo motor 2 is started to drive the worm 3 to rotate, the worm 3 drives the worm wheel 4 connected with it to rotate, and then the worm wheel 4 drives the rotating shaft 61 connected with it to rotate on the mounting plate 1, and then drives the lead screw 62 connected with it to rotate, the two sliding blocks 63 connected in screw on the lead screw 62 are driven away from or close to each other by the rotation of the lead screw 62, and then the sliding block 63 drives the connecting rod 65 connected with it to expand outward through the four pin shaft frames one 64, and then the four support plates 67 are driven to open like an umbrella by the pin shaft frame two 66 hinged with the other end of the connecting rod 65, and are supported in the steel pipe, and then the steel pipe is fixed, so that the straightening can be carried out comprehensively, without the need for secondary straightening, the worm 3 and the worm wheel 4 have a large transmission ratio and self-locking property, so that the worm wheel 4 can keep the current position after the first servo motor 2 stops, thereby keeping the fixed state of the steel pipe; the sliding block 63 drives the support plate 67 to open like an umbrella through the connecting rod 65 and the pin shaft frame two 66, and realizes comprehensive support of the steel pipe, and this support mode is more stable than single-point or few-point support, and can effectively prevent the steel pipe from deforming or shifting during straightening, and the support plate 67 is comprehensively supported in the steel pipe, so that the problem of the clamping area of the clamp being unable to be straightened during straightening is solved, and since the clamping area of the clamp cannot be straightened, additional treatment or secondary straightening is required after straightening is completed.

[0028] Since the sliding block 63 can move freely on the lead screw 62, the opening degree and support force of the support plate 67 can be flexibly controlled by adjusting the rotation angle and speed of the first servo motor 2, so that the device can adapt to steel pipes of different diameters.

[0029] Further, as Figure 1 , 4As shown, the bottom of the mounting plate 1 is provided with a supporting bottom plate 7; one end of the supporting bottom plate 7 away from the mounting plate 1 is provided with a mounting rack 12; the mounting rack 12 is provided with a sliding groove 13; the sliding groove 13 is slidably connected with a sliding block 14; the top of the mounting rack 12 is provided with a second servo motor 11; the output shaft of the second servo motor 11 is provided with a first screw rod 15; the top and bottom of the first screw rod 15 are rotatably connected to the mounting rack 12; the first screw rod 15 is threadedly connected with a lifting rod 17; the driving sliding groove 23 is provided with a driving sliding connecting block 24; two driving sliding connecting blocks 24 are fixed to the bottom of the same mounting rack 12; the sliding block 14 is mounted at both ends of the lifting rod 17; one end of the lifting rod 17 away from the first screw rod 15 is slidably connected with a first sliding rod 16; both ends of the first sliding rod 16 are fixed to the top and bottom of the mounting rack 12; the bottom of the lifting rod 17 is provided with a connecting rack 18; the connecting rack 18 is rotatably connected with a straightening roller 19;

[0030] When working, the mounting rack 12 is driven to slide in the driving sliding groove 23 by the driving sliding connecting block 24, so that the straightening roller 19 on the mounting rack 12 is located above the fixed steel pipe, and then the first screw rod 15 is driven to rotate by the second servo motor 11, the lifting rod 17 threadedly connected with the first screw rod 15 is lifted and lowered, the sliding block 14 on both sides of the lifting rod 17 slides in the sliding groove along with the lifting of the lifting rod 17, the first sliding rod 16 slidably connected to the other end of the lifting rod 17 is lifted and lowered along with the lifting of the lifting rod 17, so that the two lifting rods 17 drive the straightening roller 19 connected thereto to be placed on and under the steel pipe, the straightening of the steel pipe is realized by adjusting the approaching distance of the two lifting rods 17 to adapt to the straightening of steel pipes with different diameters and placing them on and under the steel pipe, and then the mounting rack 12 is driven to slide in the driving sliding groove 23 by the driving sliding connecting block; the precise control of the second servo motor 11 makes the movement of the lifting rod 17 very precise, so as to ensure that the straightening roller 19 can be accurately placed on and under the steel pipe and the quality of straightening is guaranteed; by adjusting the height of the lifting rod 17, steel pipes with different diameters can be adapted, which makes it more flexible and efficient when processing steel pipes of various specifications.

[0031] Further, as Figure 3As shown, the support bottom plate 7 is provided with a mounting box 25; four hydraulic telescopic rods 8 are mounted in the mounting box 25; the four hydraulic rods are connected with the same support frame 9 at the top; six rollers 10 are mounted on the mounting frame 12; during work, after the steel pipe is straightened, the hydraulic telescopic rod 8 can quickly drive the support frame 9 to be lifted to the lower side of the steel pipe, providing stable support, so that the worker can easily and safely take down the steel pipe, thereby improving the work efficiency; at the same time, when the steel pipe is fixed, as described above, when no support is provided, the hydraulic telescopic rod 8 drives the support frame 9 to be lowered, so that the support frame 9 is accommodated into the mounting box 25, reducing the influence of the support frame 9 on the straightening work of the steel pipe; the use of the support frame 9 reduces the risk of the worker directly contacting the just straightened steel pipe, reduces the possible harm, and enhances the safety of the working place.

[0032] Further, as shown in Figure 1 、 4 , the second servo motor 11 is provided with a motor fixing frame 20; the second servo motor 11 is fixed on the mounting frame 12 through the motor fixing frame 20; the bottom of the support bottom plate 7 is provided with four support columns 21; the bottom of the support column 21 is provided with an anti-skid pad 22; during work, the motor mounting frame 12 can mount the second servo motor 11 on the mounting frame 12, so that the second servo motor 11 is more stable during operation; the anti-skid pad 22 at the bottom of the support column 21 reduces the movement of the whole device during operation.

[0033] Working principle: when working, the installation frame 12 is driven to slide in the driving sliding groove 23 through the driving sliding connecting block 24, so that the straightening roller 19 on the installation frame 12 is located above the fixed steel pipe, then the first screw rod 15 is driven to rotate by the second servo motor 11, the lifting rod 17 connected with the first screw rod 15 is driven to lift and lower, the sliding blocks 14 on both sides of the lifting rod 17 slide in the sliding groove along with the lifting of the lifting rod 17, the first sliding rod 16 connected with the lifting rod 17 at the other end is lifted and lowered along with the lifting of the lifting rod 17, so that the two lifting rods 17 drive the straightening roller 19 connected therewith to be placed on the upper and lower surfaces of the steel pipe, the straightening of the steel pipe of different diameters is adapted by adjusting the approaching distance of the two lifting rods 17, and the straightening roller 19 is placed on the upper and lower surfaces of the steel pipe, then the installation frame 12 is driven to slide in the driving sliding groove 23 through the driving sliding connecting block, and the steel pipe is straightened; the accurate control of the second servo motor 11 makes the movement of the lifting rod 17 very accurate, so that the straightening roller 19 can be accurately placed on the upper and lower surfaces of the steel pipe, and the quality of straightening is guaranteed; when working, after the straightening of the steel pipe is completed, the hydraulic telescopic rod 8 can quickly drive the supporting frame 9 to lift to the lower surface of the steel pipe, provide stable support, so that the worker can easily and safely take down the steel pipe, thereby improving the work efficiency, and when the steel pipe is fixed, as described above, when not supporting, the hydraulic telescopic rod 8 drives the supporting frame 9 to descend, so that the supporting frame 9 is stored in the installation box 25, and the influence of the supporting frame 9 on the straightening of the steel pipe is reduced; the use of the supporting frame 9 reduces the risk that the worker directly contacts the just straightened steel pipe, reduces the possible harm, and enhances the safety of the working place.

[0034] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A straightening device for large-diameter seamless steel pipes, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with a first servo motor (2); the output shaft of the first servo motor (2) is connected with a worm (3); the worm (3) is connected with a worm gear (4); the worm gear (4) is provided with a rotating shaft (61); the rotating shaft (61) is rotatably connected to the mounting plate (1); one end of the rotating shaft (61) is connected with a lead screw (62); the lead screw (62) is threadedly connected with two sliding blocks (63); the sliding blocks (63) are provided with four pin shaft racks (64); the pin shaft racks (64) are hingedly connected with connecting rods (65); the other ends of the connecting rods (65) are hingedly connected with pin shaft racks (66); the two pin shaft racks (66) are provided with the same support plate (67).

2. A device for straightening large-diameter seamless steel pipes according to claim 1, characterized in that: The bottom of the mounting plate (1) is provided with a support bottom plate (7); one end of the support bottom plate (7) away from the mounting plate (1) is provided with a mounting rack (12); the mounting rack (12) is provided with a sliding groove (13); the sliding groove (13) is slidably connected with a sliding block (14); the top of the mounting rack (12) is provided with a second servo motor (11); the output shaft of the second servo motor (11) is provided with a first screw rod (15); the top and bottom of the first screw rod (15) are rotatably connected to the mounting rack (12); the first screw rod (15) is threadedly connected with a lifting rod (17); the support bottom plate (7) is provided with two driving sliding grooves (23); the driving sliding grooves (23) are provided with driving sliding connecting blocks (24); the two driving sliding connecting blocks (24) are fixed to the bottom of the same mounting rack (12).

3. A device for straightening large-diameter seamless steel pipes according to claim 2, characterized in that: The sliding block (14) is provided at both ends of the lifting rod (17); one end of the lifting rod (17) away from the first screw rod (15) is slidably connected with a first sliding rod (16); the first sliding rod (16) is fixed to the top and bottom of the mounting rack (12).

4. A device for straightening large-diameter seamless steel pipes according to claim 2, characterized in that: The bottom of the lifting rod (17) is provided with a connecting rack (18); the connecting rack (18) is rotatably connected with a straightening roller (19).

5. A device for straightening large diameter seamless steel pipes as claimed in claim 2, characterized in that: The support bottom plate (7) is provided with a mounting box (25); the mounting box (25) is provided with four hydraulic telescopic rods (8); the top of the four hydraulic rods is connected with the same support rack (9); the mounting rack (12) is provided with six rollers (10).

6. A device for straightening large-diameter seamless steel pipes according to claim 2, characterized in that: The second servo motor (11) is provided with a motor fixing rack (20); the second servo motor (11) is fixed to the mounting rack (12) through the motor fixing rack (20).

7. A device for straightening large diameter seamless steel pipes as claimed in claim 2, characterized in that: The bottom of the support bottom plate (7) is provided with four supporting columns (21); the bottom of the supporting column (21) is provided with an anti-skid pad (22).

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