A lifting tool for stainless steel pipe processing and its usage method

Abstract

The present invention relates to the technical field of stainless steel processing, and specifically discloses a lifting tool for stainless steel pipe processing, including a main body structure, a first lifting structure, and a second lifting structure; the main body structure can be relatively assembled and spliced, the first lifting structure is fixedly arranged on the left side of the main body structure, and the second lifting structure is fixedly arranged on the main body structure; the first lifting structure of the present invention is applicable to pipes with a smaller diameter, and the lifting is realized by driving a gear and a tooth arm by a motor, and the pipe is fixed by the included angle between the railing and the tooth arm; the second lifting structure is applicable to pipes with a larger diameter, and the safe fixation is realized by the clamping or expansion of the lifting claws, and the position and direction can be adjusted according to requirements. This design not only improves the applicability of the equipment, but also enhances its flexibility in different working environments.

Description

Technical Field

[0001] The present invention relates to the technical field of stainless steel processing, and particularly to a lifting tool for stainless steel pipe processing and a using method thereof. Background Art

[0002] In modern industrial production, the processing and handling of pipes are an important link. Especially for stainless steel pipes, due to their excellent corrosion resistance and mechanical properties, they are widely used in fields such as construction, chemical industry, petroleum, and natural gas. In the production process of pipes, quenching is a key process used to improve the hardness and strength of pipes. However, the handling and stacking processes of pipes before and after quenching treatment often require a large amount of manpower and time. The traditional manual handling method is not only inefficient but also has a high safety risk. Therefore, designing a lifting device that can operate automatically to improve production efficiency and safety has become an urgent need in the industry.

[0003] In the prior art, for the lifting and handling of pipes, some automated devices have been developed. These devices generally include a lifting tool, a bracket, and a moving device, and can achieve a certain degree of automated operation. However, these devices still have some deficiencies in actual applications. For example, when traditional lifting tools handle pipes with different diameters and weights, different clamping devices often need to be replaced, and the operation is complex and not flexible enough. In addition, when existing lifting devices perform simultaneous lifting of multiple groups of pipes, multiple devices often need to be used in cooperation, increasing the equipment investment and maintenance costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a lifting tool for stainless steel pipe processing and a using method thereof to solve the problems raised in the above background art. The present invention can meet the lifting requirements of pipes with different specifications; through a unique structural design, the device can be flexibly adjusted to adapt to pipes with different diameters and weights without replacing the clamping device; at the same time, the modular design of the device allows docking and collaborative work between multiple devices, greatly improving the lifting efficiency and equipment stability; in addition, the automated moving and adjusting functions make the device more flexible in actual operation and can adapt to various working environments and process requirements. These innovative designs effectively solve the defects in the prior art and provide an efficient and safe solution for the automated lifting of pipes.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A lifting tool for stainless steel pipe processing, comprising a main structure, a first lifting structure, and a second lifting structure; the main structure can be relatively assembled and spliced, the first lifting structure is fixedly arranged on the left side of the main structure, and the second lifting structure is fixedly arranged on the main structure.

[0006] Preferably, the main structure includes a main frame, two pairs of support arms, two pairs of universal wheels, a slideway, a pair of electric slide rails, a pair of first transfer arms, a second transfer arm, a plurality of transfer bolts and a plurality of locking rods; the main frame is a rectangular structure, and the left and right side walls are provided with sockets near the four corners of the bottom, the upper wall of the right end of the main frame is symmetrically provided with a first fitting groove connected to the right side wall, the upper wall of the right end of the main frame is provided with a second fitting groove respectively connected to the first fitting groove, the middle part of the upper wall of the main frame is provided with a third fitting groove connected to the second fitting groove, and the third fitting groove has the same width as the first fitting groove, one end of the two pairs of support arms are respectively fixedly inserted in the sockets of the main frame, and the other ends of the support arms are respectively tilted on both sides of the main frame, and the two pairs of universal wheels are respectively fixedly arranged on the other ends of the support arms On the end, the slide is fixedly arranged in the middle of the lower wall of the left end of the main frame, a pair of the electric slide rails are respectively arranged on the lower wall of the main frame, and are symmetrical near the front and rear ends respectively, a pair of the first transfer arms are respectively movably embedded in the first matching groove, and the first transfer arm can be embedded in the second matching groove, one end of the first transfer arm is a Z-shaped structure, and one end of the first transfer arm can be relatively staggered and matched, the second transfer arm is movably embedded in the third matching groove, and both ends of the second transfer arm are the same as one end of the first transfer arm, a number of the transfer bolts are respectively detachable and pass through both ends of the first transfer arm and the second transfer arm and are rotated in the main frame, a number of the locking rods are respectively detachable and pass through one end of the first transfer arm and both ends of the second transfer arm, and the locking rods are located on both sides of the transfer bolts.

[0007] Preferably, the first lifting structure includes two pairs of limit seats, a pair of tooth arms, a pair of first motors, a pair of gears and a pair of railings; one end of the two pairs of limit seats are respectively vertically arranged on one end of one pair of support arms, and are respectively inclined at the left side of the main frame, and the other ends of the two pairs of limit seats are each provided with a lifting opening in the middle part, one end of a pair of tooth arms are respectively movable through the other end of the limit seats, and teeth are respectively provided on the lower walls of the tooth arms, a pair of the first motors are respectively symmetrically arranged on the upper wall of the left end of the main frame, a pair of the gears are respectively fixedly mounted on the driving end of the first motor, and the gears are respectively engaged with the tooth arms, a pair of the railings are both L-shaped, and one end of a pair of the railings are respectively fixedly arranged on the other end of the tooth arms and close to the universal wheel.

[0008] Preferably, the second lifting structure includes a moving seat, a limiting arm rod, a lifting frame, a shaft rod, a pair of second motors, a pair of screw rods, and a pair of lifting claws; the moving seat is of a concave structure, and a bearing is fixedly embedded in the middle. The two ends of the moving seat are respectively fixedly arranged between the electric slide rails, and the moving seat can move left and right by means of the electric slide rails. The moving seat is located below the electric slide rails and the slideway. One end of the limiting arm rod is fixedly arranged in the middle of the upper wall of the moving seat, and the other end of the limiting arm rod is movably inserted into the slideway. The lifting frame is of a rectangular structure, and machine slots are symmetrically arranged at the tops of the left and right ends. Lifting slots are correspondingly arranged below the machine slots. One end of the shaft rod is fixedly arranged in the middle of the upper wall of the lifting frame, and the other end of the shaft rod is fixedly inserted into the middle of the bearing. The pair of second motors are respectively embedded in the machine slots of the lifting frame, and the driving ends of the second motors movably penetrate through the middle of the upper wall of the lifting slots. One end of each of the pair of screw rods is respectively fixedly connected to the driving end of the second motor, and the other end of the screw rod is respectively movably embedded in the lower wall of the lifting slot. One end of each of the pair of lifting claws is respectively movably inserted into the lifting slot and is respectively screwed with the screw rod. The other ends of the pair of lifting claws are both arc-shaped and are symmetrically arranged up and down.

[0009] Preferably, the lifting claws can be lifted and moved independently and remain correspondingly arranged up and down.

[0010] Preferably, the lifting frame can be moved to the right side of the main frame through the moving seat, and the lifting frame can rotate 360 degrees.

[0011] Preferably, the main body structure can be clamped in the second fitting groove through the first adapter arm for docking and is fixedly connected through the adapter bolt.

[0012] Preferably, the first motor drives the gear to rotate, the gear meshes with the tooth arm for transmission, drives the tooth arm to slide through the limitation of the limiting seat, and then clamps the pipe in the included angle between the railing and the tooth arm through the railing block to raise it to a certain height.

[0013] A method for using a lifting tool for stainless steel pipe processing includes the following steps:

[0014] Step 1: Support at a certain height through the main body structure, and it can be moved and assembled and docked for combined use;

[0015] Step 2: The first lifting structure can be used to carry one or more small-diameter pipes and lift them to a certain height;

[0016] Step 3: The second lifting structure can expand and fix or clamp and fix large-diameter pipes and lift them to a certain height, and the orientation of the second lifting structure can be adjusted. After docking with the main body structure, the two sets of second lifting structures can be arranged opposite to each other to lift pipes of a certain length and increase stability.

[0017] A lifting tool for stainless steel pipe processing and its usage method proposed by the present invention. Compared with traditional fixed lifting tools, the present invention includes two main lifting structures: the first lifting structure is applicable to pipes with a smaller diameter, and realizes lifting through a motor-driven gear and a tooth arm, and fixes the pipe by using the included angle between the railing and the tooth arm; the second lifting structure is applicable to pipes with a larger diameter, and realizes safe fixation through the clamping or expansion of the lifting claws, and can adjust the position and direction according to requirements. This design not only improves the applicability of the equipment, but also enhances its flexibility in different working environments before and after quenching treatment. The beneficial effects are as follows:

[0018] 1. High flexibility of the present invention: The main structure is simple, facilitating movement on the ground, and improving the flexibility and application range of the equipment.

[0019] 2. Versatility: The first lifting structure is designed to carry pipes with a smaller diameter and can support multiple pipes simultaneously, improving work efficiency.

[0020] 3. Simple operation: There is no need for fixing methods such as clamping, bundling or hooking, simplifying the operation process and reducing the operation difficulty and time.

[0021] 4. Strong adaptability: The movable and reorientable design of the second lifting structure enables it to adapt to pipes of different forms and diameters, increasing the versatility of the equipment, and at the same time, it can fix the pipe in a way of outward expansion or clamping.

[0022] 5. Scalability: The main structure can be spliced relatively and the spacing can be adjusted, which is applicable to pipes of different lengths and diameters, improving the adaptability and flexibility of the equipment, and at the same time improving the stability after loading. Since there is no need for traditional clamping or bundling methods, the damage that the pipe may suffer during lifting is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the assembly structure of the present invention;

[0024] Figure 2 is a schematic diagram of the combined usage display structure of the present invention;

[0025] Figure 3 is a schematic diagram of the first assembly structure of the present invention;

[0026] Figure 4 is a schematic diagram of the second assembly structure of the present invention;

[0027] Figure 5 is a schematic diagram of the split structure of the main structure of the present invention;

[0028] Figure 6 is a schematic diagram of the split structure of the first lifting structure of the present invention;

[0029] Figure 7 Schematic diagram of the split structure of the second hoisting structure of the present invention;

[0030] Figure 8 of the present invention Figure 5 Partial enlarged view of part A in;

[0031] Figure 9 of the present invention Figure 6 Partial enlarged view of part B in;

[0032] Figure 10 of the present invention Figure 7 Partial enlarged view of part C in;

[0033] Figure 11 of the present invention Figure 4 Partial enlarged view of part D in.

[0034] In the figure: 1, main body structure; 10, main frame; 11, support arm; 12, universal wheel; 13, slideway; 14, electric slide rail; 15, first adapter arm; 16, second adapter arm; 17, adapter bolt; 18, lock rod; 2, first hoisting structure; 21, limit seat; 22, toothed arm; 23, first motor; 24, gear; 25, railing; 3, second hoisting structure; 31, moving seat; 32, limit arm rod; 33, lifting frame; 34, shaft rod; 35, second motor; 36, screw rod; 37, lifting claw; 38, bearing; 4, first fitting groove; 5, second fitting groove; 6, third fitting groove. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-11 , the present invention provides a technical solution: A hoist for stainless steel pipe processing, including a main body structure 1, a first hoisting structure 2 and a second hoisting structure 3; the main body structure 1 can be relatively combined and spliced, the first hoisting structure 2 is fixedly arranged on the left side of the main body structure 1, the second hoisting structure 3 is fixedly arranged on the main body structure 1, and the main body structure 1 is used for bearing and has a certain height and can move freely. Multiple pipes with a smaller diameter can be lifted by the first hoisting structure 2, and pipes with a larger diameter can be lifted by the second hoisting structure 3, or a bundle of smaller pipes can also be lifted.

[0037] As a preferred solution, further, the main body structure 1 includes a main frame 10, two pairs of support arms 11, two pairs of universal wheels 12, a slideway 13, a pair of electric slide rails 14, a pair of first adapter arms 15, a second adapter arm 16, a number of adapter bolts 17 and a number of locking rods 18; the main frame 10 is a rectangular structure, and sockets are provided at the four corners of the left and right side walls near the bottom, a first fitting groove 4 communicating with the right side wall is symmetrically provided on the upper wall of the right end of the main frame 10, a second fitting groove 5 communicating with the first fitting groove 4 is provided on the upper wall of the right end of the main frame 10, a third fitting groove 6 communicating with the second fitting groove 5 is provided in the middle of the upper wall of the main frame 10, and the width of the third fitting groove 6 is the same as that of the first fitting groove 4. One end of each of the two pairs of support arms 11 is fixedly inserted into the sockets of the main frame 10, and the other ends of the support arms 11 are respectively inclined on both sides of the main frame 10. Two pairs of universal wheels 12 are respectively fixedly arranged at the other ends of the support arms 11. The slideway 13 is fixedly arranged in the middle of the lower wall of the left end of the main frame 10. A pair of electric slide rails 14 are respectively arranged on the lower wall of the main frame 10 and are symmetrically arranged near the front and rear ends respectively. A pair of first adapter arms 15 are respectively movably fitted in the first fitting groove 4, and the first adapter arms 15 can be fitted in the second fitting groove 5. One end of the first adapter arm 15 is a Z-shaped structure, and one end of the first adapter arm 15 can be relatively and staggeredly fitted and docked. The second adapter arm 16 is movably fitted in the third fitting groove 6, and both ends of the second adapter arm 16 are the same as one end of the first adapter arm 15. A number of adapter bolts 17 are respectively detachably penetrated through both ends of the first adapter arm 15 and the second adapter arm 16 and are screwed into the main frame 10. One end of each of the number of locking rods 18 is respectively detachably penetrated through both ends of one end of the first adapter arm 15 and the second adapter arm 16, and the locking rods 18 are located on both sides of the adapter bolts 17; the main driver is supported at a certain height by the support arms 11, and has good load-bearing capacity through inclined support. The equipment can be moved through the universal wheels 12. The main body structure 1 can be connected through the first adapter arm 15 and the second adapter arm 16 to increase stability and coordinated use.

[0038] As a preferred solution, further, the first hoisting structure 2 includes two pairs of limit seats 21, a pair of tooth arms 22, a pair of first motors 23, a pair of gears 24 and a pair of railings 25; one ends of the two pairs of limit seats 21 are respectively vertically arranged on one ends of one pair of support arms 11, and are respectively inclined on the left side of the main frame 10. A lifting port is arranged in the middle of the other ends of the two pairs of limit seats 21. One ends of a pair of tooth arms 22 respectively pass through the other ends of the limit seats 21 movably, and tooth teeth are arranged on the lower walls of the tooth arms 22. A pair of first motors 23 are symmetrically arranged on the upper wall of the left end of the main frame 10 respectively. A pair of gears 24 are respectively fixedly sleeved on the driving ends of the first motors 23, and the gears 24 are respectively engaged with the tooth arms 22. A pair of railings 25 are both L-shaped. One ends of the pair of railings 25 are respectively fixedly arranged on the other ends of the tooth arms 22 and close to the universal wheels 12. By driving the gears 24 to rotate through the first motors 23, the gears 24 are engaged and transmitted with the tooth arms 22, driving the tooth arms 22 to slide through the limitation of the limit seats 21. Furthermore, the pipes can be blocked by the railings 25 and clamped at the included angle between the railings 25 and the tooth arms 22 to be lifted to a certain height.

[0039] As a preferred solution, further, the second hoisting structure 3 includes a moving seat 31, a limit arm rod 32, a lifting frame 33, a shaft rod 34, a pair of second motors 35, a pair of screw rods 36 and a pair of lifting claws 37; the moving seat 31 is of a concave structure, and a bearing 38 is fixedly embedded in the middle. The two ends of the moving seat 31 are respectively fixedly arranged between the electric slide rails 14, and the moving seat 31 can move left and right by means of the electric slide rails 14. The moving seat 31 is located below the electric slide rails 14 and the slideway 13. One end of the limit arm rod 32 is fixedly arranged in the middle of the upper wall of the moving seat 31, and the other end of the limit arm rod 32 is movably inserted into the slideway 13. The lifting frame 33 is of a rectangular structure, and machine slots are symmetrically arranged at the tops of the left and right ends. Lifting slots are correspondingly arranged below the machine slots. One end of the shaft rod 34 is fixedly arranged in the middle of the upper wall of the lifting frame 33, and the other end of the shaft rod 34 is fixedly inserted into the middle of the bearing 38. A pair of second motors 35 are respectively embedded in the machine slots of the lifting frame 33, and the driving ends of the second motors 35 movably pass through the middle of the upper wall of the lifting slots. One ends of a pair of screw rods 36 are respectively fixedly connected to the driving ends of the second motors 35, and the other ends of the screw rods 36 are respectively movably embedded in the lower walls of the lifting slots. One ends of a pair of lifting claws 37 are respectively movably inserted into the lifting slots and are respectively screwed with the screw rods 36. The other ends of the pair of lifting claws 37 are both arc-shaped and are respectively symmetrically arranged up and down. By means of the electric slide rails 14, the moving seat 31 can be driven to move left and right, driving the lifting frame 33 to be located below the main frame 10 or on the right side of the main frame 10, changing the position and orientation of the lifting claws 37. By driving the screw rods 36 to rotate through the second motors 35 respectively, the lifting claws 37 are always correspondingly arranged up and down, and synchronous clamping lifting or expanding lifting can be realized.

[0040] As a preferred solution, furthermore, the lifting claws 37 can be individually lifted and moved, and remain vertically corresponding to each other. For design requirements, they can be used in cooperation with clamping or expanding the inner wall, and can also be used in cooperation with lifting.

[0041] As a preferred solution, furthermore, the lifting frame 33 can be moved to the right side of the main frame 10 through the moving seat 31, and the lifting frame 33 can rotate 360 degrees. For design requirements, the orientation can be changed according to the usage method.

[0042] As a preferred solution, furthermore, the main body structure 1 can be clamped in the second fitting groove 5 through the first adapter arm 15 for docking, and fixedly connected through the adapter bolt 17. After the two sets of equipment are docked and fixed, it can stably carry a relatively large number or heavy pipes.

[0043] Working principle:

[0044] The main frame 10 is supported at a certain height by the support arm 11 in the main body structure 1, and better weighing capacity and stability are achieved through the inclined setting of the support arm 11; the equipment can be moved through the universal wheels 12 to improve the flexibility of the equipment;

[0045] When using the equipment to hoist pipes: if the diameter of the pipe is small, its relative weight is light;

[0046] Therefore, the first motor 23 in the first hoisting structure 2 can be controlled to drive the gear 24. Through the meshing transmission between the gear 24 and the tooth arm 22, the tooth arm 22 can be moved by being limited by the limit seat 21, and then the railing 25 can be driven to rise to a certain height; at this time, the pipe can be placed at the included angle formed between the railing 25 and the tooth arm 22, and then the pipe can be stably driven to rise without clamping; since the first hoisting structures 2 are symmetrically arranged on the support arms 11 on one side of the main frame 10, the pipes can be lifted to different heights through the two first hoisting structures 2 for combined use, or multiple pipes can be carried together for lifting.

[0047] When using the equipment to hoist pipes: if the diameter of the pipe is large, its relative weight is heavy;

[0048] At this time, the second motor 35 in the lifting frame 33 of the second hoisting structure 3 can be controlled to drive the screw rod 36 to rotate respectively, and the lifting claws 37 located at the upper and lower staggered positions can be adjusted to move up and down.

[0049] When one of the lifting claws 37 moves to the bottom of the lifting frame 33, it can be inserted into the inside of the pipe. Then, control the other lifting claw 37 to be above the outside of the pipe. Thus, the pipe can be clamped and fixed by the relative movement of the lifting claws 37. After clamping, synchronously control the lifting claws 37 to rise and lift the pipe by a certain height. It is also possible to insert both lifting claws 37 into the inside of the pipe, and then control the lifting claws 37 to separate relatively to expand and fit against the inner wall of the pipe for fixation. Similarly, then synchronously drive the lifting claws 37 to rise to drive the pipe to be lifted.

[0050] When the second lifting structure 3 is in use, according to the usage requirements, the orientation of the lifting claws 37 can be adjusted by rotating the shaft rod 34 in the bearing 38, that is, adjusting the direction of lifting the pipe. It is also possible to drive the electric slide rail 14 to drive the moving seat 31 to move left and right, and adjust the lifting position of the lifting frame 33 below the middle of the main frame 10 or on the right side of the main frame 10. When the moving seat 31 moves to the right, the moving seat 31 will move in the slideway 13 with the help of the limiting arm rod 32 and receive assistance.

[0051] During the use of the first lifting structure 2 and the second lifting structure 3, the main structures 1 can be docked and matched to realize the combined use of multiple groups of the first lifting structures 2 and the second lifting structures 3.

[0052] For example: Relatively transfer the two devices through the first transfer arm 15, that is, take out the first transfer arm 15 in the first fitting groove 4, and embed one end of the first transfer arm 15 into the second fitting groove 5 at the relatively connected part with the first fitting groove 4 for locking. At this time, the first transfer arm 15 cannot rotate. Then, the other ends of the relatively staggered first transfer arms 15 can be relatively fitted and docked. Both ends of the first transfer arm 15 are connected and fixed through the transfer bolts 17. Moreover, the connection end of the first transfer arm 15 is force-limited by inserting a pair of locking rods 18 to complete the connection.

[0053] Between the main structures 1, after the first transfer arm 15 is embedded in the second fitting groove 5, the second transfer arm 16 can be taken out from the third fitting groove 6, and then the second transfer arm 16 can be installed between the first transfer arms 15 to increase the distance between the main structures 1 for use.

[0054] After the main structures 1 are relatively connected in series, the first lifting structure 2 on the main structure 1 can be used to carry longer pipes, and at the same time, it also makes the equipment more stable when carrying and lifting. Moreover, with the help of the second lifting structure 3, after relative rotation, it can lift larger-diameter pipes of corresponding lengths, clamp or expand and fix both ends of them and then lift.

[0055] In summary, this technical solution is designed for the stacking and quenching processes of stainless steel pipes, providing an efficient and safe automated lifting solution:

[0056] 1. Adapt to stainless steel pipes of different specifications: During the production and processing of stainless steel pipes, pipes of different diameters and lengths are often involved. Through the flexible combination of two lifting structures (the first lifting structure 2 and the second lifting structure 3), this lifting tool can handle pipes with small diameters and light weights and pipes with large diameters and heavy weights respectively. This versatility ensures that the equipment can be applied to stainless steel pipes of various specifications.

[0057] 2. Improve the palletizing efficiency: The handling and palletizing of stainless steel pipes before and after quenching is a time-consuming process. The automated operation feature of this equipment can quickly and accurately lift the pipes to the designated position, significantly reducing the manual operation time and improving the palletizing efficiency. At the same time, the modular design allows multiple devices to work together, further enhancing the overall operation efficiency.

[0058] 3. Safe and stable lifting process: During the quenching process, stainless steel pipes need to undergo high-temperature treatment, and the safe handling of the pipes is particularly important. This equipment ensures the stability of the pipes during the lifting process through the clamping and expanding design of the lifting claws 37, avoiding potential safety hazards caused by slipping or collision. The automated operation reduces manual intervention and lowers the operation risk in the high-temperature environment.

[0059] 4. Flexible process adaptability: The quenching process may require the pipes to be processed at different positions and in different directions. Through the 360-degree rotation and left-right movement functions of the lifting frame 33, the equipment can flexibly adjust the lifting position and direction according to the process requirements to ensure the best processing state of the pipes during the quenching process.

[0060] 5. Convenience of equipment movement and adjustment: With the help of the universal wheels 12 and the electric slide rails 14, the equipment can move flexibly in the production workshop and quickly adapt to the needs of different working areas. This convenience enables the equipment to easily integrate into the existing production process without large-scale site adjustments or additional infrastructure investments.

[0061] In summary, through its versatility, safety, automation, and flexibility, this automatic lifting tool for palletizing and quenching of stainless steel pipes is perfectly suitable for the palletizing and quenching processes of stainless steel pipes, can significantly improve production efficiency and safety, and meet the requirements of modern industry for high-efficiency automated equipment.

[0062] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting tool for stainless steel pipe processing, characterized in that, It includes a main structure, a first lifting structure, and a second lifting structure; the main structure can be assembled relatively, the first lifting structure is fixedly arranged on the left side of the main structure, and the second lifting structure is fixedly arranged on the main structure; The main structure includes a main frame, two pairs of support arms, two pairs of universal wheels, a slideway, and a pair of electric slide rails; One end of each support arm is inclined on both sides of the main frame respectively, two pairs of universal wheels are respectively fixedly arranged on the other end of the support arms, the slideway is fixedly arranged in the middle of the lower wall at the left end of the main frame, and a pair of electric slide rails are respectively arranged on the lower wall of the main frame and are symmetrically arranged near the front and rear ends respectively; The second lifting structure includes a moving seat, a limiting arm rod, a lifting frame, a shaft rod, a pair of second motors, a pair of screw rods, and a pair of lifting claws; The moving seat is of a concave structure, and a bearing is fixedly embedded in the middle. The two ends of the moving seat are respectively fixedly arranged between the electric slide rails, and the moving seat can move left and right by means of the electric slide rails. The moving seat is located below the electric slide rails and the slideway. One end of the limiting arm rod is fixedly arranged in the middle of the upper wall of the moving seat, and the other end of the limiting arm rod is movably inserted into the slideway. The lifting frame is of a rectangular structure, and machine slots are symmetrically arranged at the tops of the left and right ends. Lifting slots are correspondingly arranged below the machine slots. One end of the shaft rod is fixedly arranged in the middle of the upper wall of the lifting frame, and the other end of the shaft rod is fixedly inserted into the middle of the bearing. A pair of second motors are respectively embedded in the machine slots of the lifting frame, and the driving ends of the second motors movably penetrate through the middle of the upper wall of the lifting slots. One end of a pair of screw rods is respectively fixedly connected to the driving ends of the second motors, and the other end of the screw rods is respectively movably embedded in the lower wall of the lifting slots. One end of a pair of lifting claws is respectively movably inserted into the lifting slots and is respectively screwed with the screw rods. The other ends of the pair of lifting claws are both arc-shaped and are symmetrically arranged up and down. The lifting claws can be lifted and moved independently and keep corresponding up and down.

2. The sling for stainless steel pipe processing according to claim 1, wherein, The main structure further includes a pair of first adapter arms, a second adapter arm, a plurality of adapter bolts, and a plurality of locking rods; The main frame is of a rectangular structure, and sockets are respectively opened at the four corners near the bottom of the left and right side walls. First fitting grooves communicating with the right side wall are symmetrically opened on the upper wall at the right end of the main frame. Second fitting grooves communicating with the first fitting grooves are opened on the upper wall at the right end of the main frame. A third fitting groove communicating with the second fitting groove is opened in the middle of the upper wall of the main frame, and the third fitting groove has the same width as the first fitting groove. One end of each of the two pairs of support arms is fixedly inserted into the sockets of the main frame. A pair of first adapter arms are respectively movably embedded in the first fitting grooves, and the first adapter arms can be embedded in the second fitting grooves. One end of the first adapter arm is of a Z-shaped structure, and one end of the first adapter arm can be relatively staggered and fitted. The second adapter arm is movably embedded in the third fitting groove, and both ends of the second adapter arm are the same as one end of the first adapter arm. A plurality of the adapter bolts respectively pass through the two ends of the first adapter arm and the second adapter arm detachably and are screwed into the main frame. One end of a plurality of the locking rods respectively passes through the two ends of one end of the first adapter arm and the second adapter arm detachably, and the locking rods are located on both sides of the adapter bolts.

3. The sling for stainless steel pipe processing according to claim 2, characterized in that, The first lifting structure includes two pairs of limiting seats, a pair of toothed arms, a pair of first motors, a pair of gears, and a pair of railings; One end of two pairs of the limiting seats is vertically arranged on one end of one pair of the support arms respectively, and they are respectively inclined on the left side of the main frame. A lifting port is arranged in the middle of the other end of the two pairs of the limiting seats. One end of a pair of the tooth arms respectively penetrates through the other end of the limiting seats movably, and tooth teeth are arranged on the lower walls of the tooth arms. One of a pair of the first motors is symmetrically arranged on the upper wall of the left end of the main frame. One of a pair of the gears is fixedly sleeved on the driving end of the first motor, and the gears are respectively engaged with the tooth arms. One of a pair of the railings is in an L shape. One end of the pair of the railings is respectively fixedly arranged on the other end of the tooth arms and close to the universal wheels.

4. A sling for stainless steel pipe processing according to claim 3, characterized in that, The lifting frame can move to the right side of the main frame through the moving seat, and the lifting frame can rotate by a certain degree.

5. A sling for stainless steel pipe processing according to claim 4, wherein, The main body structure can be clamped in the second fitting groove through the first connecting arm for docking, and is fixedly connected through the connecting bolts.

6. The sling for stainless steel pipe processing according to claim 5, characterized in that, The first motor drives the gears to rotate. The gears are engaged with the tooth arms for transmission, driving the tooth arms to slide through the limitation of the limiting seats. Then, the pipes are clamped at the included angle between the railings and the tooth arms through the shielding of the railings and lifted to a certain height.

7. The method for using a lifting tool for stainless steel pipe processing according to claim 6, characterized in that, It includes the following steps: Step 1: Support at a certain height through the main body structure, and it can be moved and assembled and docked for cooperative use; Step 2: The first hoisting structure can be used to carry one or more small-diameter pipes and lift them to a certain height; Step 3: The second hoisting structure can expand and fix or clamp and fix large-diameter pipes and lift them to a certain height. The orientation of the second hoisting structure can be adjusted, and after being docked with the main body structure, two groups of the second hoisting structures can be arranged oppositely to lift pipes of a certain length and increase stability.

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