A welding workpiece hoisting and positioning device and hoisting and positioning method

Abstract

The present invention provides a welding workpiece hoisting and positioning device and a hoisting and positioning method, comprising a clamping device for clamping the welding workpiece, and a first hoisting device for controlling the movement of the clamping device, wherein the clamping device is symmetrically arranged in two groups, a second hoisting device is arranged between the two groups of clamping devices and the first hoisting device, both sides of the second hoisting device are slidably connected with connected workpieces, the ends of the connected workpieces are connected to the corresponding upper ends of the clamping devices, and an adjustment device is arranged at the bottom of the second hoisting device, and the adjustment device is located between the two groups of connected workpieces. The invention can complete the hoisting and positioning of two groups of welding workpieces with one group of hoisting equipment, thereby improving the welding efficiency and reducing the welding cost.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a welding workpiece hoisting and positioning device and a hoisting and positioning method. Background Art

[0002] In the process of mining and ore crushing, a huge crushing body is used, on the surface of which tunneling / crushing teeth are welded at intervals to meet the needs of ore mining and processing.

[0003] This type of huge working teeth is fixed to the surface of the rotating body by welding, and is usually arranged at circumferential intervals; its size and mass are large, and the clamped working teeth need to be hoisted and lifted into position by hoisting equipment.

[0004] Existing lifting equipment is usually a combination of a lifting frame and a hoisting equipment, which can lift one working tooth at a time. During the welding process, the working teeth need to be welded one by one. For a rotating body with a large length span, the welding time is long. Using two sets of lifting equipment at the same time not only increases the cost of welding, but also puts higher requirements on the space volume of the workshop and the control and positioning of the lifting equipment. Summary of the invention

[0005] In view of the above problems, the present invention provides a welding workpiece hoisting and positioning device and a hoisting and positioning method. The invention can complete the hoisting and positioning of two groups of welding workpieces with one set of hoisting equipment, thereby improving the welding efficiency and reducing the welding cost.

[0006] To solve the above problems, the technical solution adopted by the present invention is:

[0007] A welding workpiece hoisting and positioning device comprises a clamping device for clamping the welding workpiece, and a first hoisting device for controlling the movement of the clamping device, wherein the clamping device is symmetrically arranged in two groups, a second hoisting device is arranged between the two groups of clamping devices and the first hoisting device, both sides of the second hoisting device are slidably connected with connected workpieces, the ends of the connected workpieces are connected to the corresponding upper ends of the clamping devices, an adjusting device is arranged at the bottom of the second hoisting device, the adjusting device is located between the two groups of connected workpieces, and the distance between the two groups of connected workpieces is controlled by the adjusting device.

[0008] Preferably, the adjustment device includes two adjustment rods, the first ends of the two adjustment rods are rotationally connected, the second ends of the two adjustment rods are rotationally connected to the corresponding connecting workpieces, an adjustment sleeve is provided at the rotational connection of the two adjustment rods, and a position control device is provided between the adjustment sleeve and the second lifting device.

[0009] Preferably, the clamping device includes a U-shaped first clamping body and a U-shaped second clamping body, the second clamping body is located inside the first clamping body, the bottom of the second clamping body at least partially extends out of the first clamping body to form a clamping area, and the second clamping body is rotatably connected to the inner wall of the first clamping body, and the outer wall of the first clamping body is installed with a deflection drive device for controlling the rotation of the second clamping body.

[0010] Preferably, the deflection drive device includes a first deflection shaft and a second deflection shaft, the first deflection shaft is fixedly connected to the second clamping body, the first deflection shaft and the first clamping body are rotationally connected, the first deflection shaft and the second deflection shaft are transmitted by a gear set, and an electric control device is arranged on the outside of the second deflection shaft.

[0011] Preferably, a one-way locking device is provided at the bottom of the first clamping body, and the one-way locking device includes an arc-shaped locking base and a locking mounting seat. The locking base is provided with a one-way locking tooth on one side close to the gear set, and an elastic component is provided between the bottom of the locking base and the locking mounting seat.

[0012] Preferably, the connected workpiece includes a first connecting base and a second connecting base, the first connecting base and the second connecting base are connected by a connecting chain, the second connecting base is slidably connected to the upper end of the clamping device, a telescopic element is arranged between the second connecting base and the clamping device, a deflection detection device is arranged on the outside of the first deflection shaft, the deflection angle of the first deflection shaft is detected by the deflection detection device, and the telescopic amount of the telescopic element is controlled according to the detected deflection angle.

[0013] Preferably, the telescopic element includes a first telescopic element and a second telescopic element, the first telescopic element and the second telescopic element are respectively located on both sides of the second connecting base, the telescopic bases of the first telescopic element and the second telescopic element are fixedly connected to the surface of the clamping device, and the telescopic ends of the first telescopic element and the second telescopic element are fixedly connected to the second connecting base.

[0014] Preferably, an angle detection device is provided at the bottom of the second clamping body, and the angle detection device includes at least two detection probes arranged at intervals. The detection probes are arranged along the length direction of the bottom of the second clamping body, and the deflection angle of the second clamping body is controlled according to the distance data obtained by the two detection probes.

[0015] Preferably, the first lifting device comprises an I-beam and an electric hoist, the end of the lifting rope of the electric hoist is fixedly connected to a lifting platform, and the lifting platform is fixedly connected to the upper end of the second lifting device.

[0016] A welding workpiece hoisting and positioning method comprises the following steps:

[0017] S1. Measure the length of the welding body, and determine the number of welding workpieces and the spacing distance x between adjacent welding workpieces according to the length of the welding body;

[0018] S2, controlling the adjustment device according to the spacing distance x calculated in step S1, and controlling the welding distance between the two clamping devices to be Nx;

[0019] S3. Determine the initial welding position of the welding body, move the first clamping device to the initial welding position through the first lifting device, and complete the synchronous welding of the two welding workpieces.

[0020] The beneficial effects of the present invention are:

[0021] Through the cooperation of the first lifting device and the second lifting device, the two clamping devices can be lifted at the same time. At the same time, the two clamping devices are symmetrically arranged, and the second lifting device can play the role of a balancing lever to ensure the stability of the lifting and welding process of the two clamping devices; the distance between the two clamping devices can be adjusted by the adjustment device to meet the needs of synchronous welding; through the above-mentioned setting method, the two welding workpieces can be welded and positioned synchronously, which improves the efficiency of positioning and subsequent welding as a whole; and by setting structures such as a deflection drive device, the deflection angle of the welding workpiece can be automatically adjusted, meeting the adaptive welding needs of different welding subjects and different welding areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Schematic diagram of the main structure;

[0024] Figure 3 For the present invention Figure 1 A schematic diagram of a top view structure;

[0025] Figure 4 For the present invention Figure 1 A side view schematic diagram of the structure;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping device of the present invention;

[0027] Figure 6 For the present invention Figure 5 A rear view structural diagram of ;

[0028] Figure 7 For the present invention Figure 5 A side view schematic diagram of the structure;

[0029] Figure 8 For the present invention Figure 7 BB-direction cross-sectional structural diagram;

[0030] Fig. 9 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0031] Fig.10 It is a schematic diagram of the enlarged structure of position C of the present invention;

[0032] Fig.11 The figure is a flow chart of the method of the present invention.

[0033] In the figure: 100, first lifting device; 110, I-beam; 120, electric hoist; 130, lifting rope; 140, lifting platform; 200, second lifting device; 300, adjustment device; 310, adjustment rod; 320, adjustment sleeve; 330, driving body; 340, adjustment screw; 400, clamping device; 410, first clamping body; 420, second clamping body; 421, clamping area; 500, deflection driving device ; 510, first deflection axis; 520, second deflection axis; 530, electronic control device; 600, connecting workpiece; 610, first connecting base; 620, connecting chain; 630, second connecting base; 631, first telescopic element; 632, second telescopic element; 700, one-way locking device; 710, locking mounting seat; 720, locking base; 721, one-way locking teeth; 730, elastic component; 800, deflection detection device. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Refer to the attached Figure 1 -Attached Fig.10 A welding workpiece hoisting and positioning device includes a clamping device 400 for clamping the welding workpiece, and a first hoisting device 100 for controlling the movement of the clamping device 400. The clamping device 400 is divided into two groups symmetrically arranged. A second hoisting device 200 is arranged between the two groups of clamping devices 400 and the first hoisting device 100. Both sides of the second hoisting device 200 are slidably connected with a connecting workpiece 600. The ends of the connecting workpiece 600 are connected to the corresponding upper ends of the clamping device 400. An adjusting device 300 is arranged at the bottom of the second hoisting device 200. The adjusting device 300 is located between the two groups of connecting workpieces 600. The distance between the two groups of connecting workpieces 600 is controlled by the adjusting device 300.

[0036] During the welding hoisting process, the workpiece to be welded is first locked and fixed by the clamping device 400. After the welding workpieces on both sides are fixed, the second hoisting device 200, the clamping device 400 and the welding workpiece are lifted by the first hoisting device 100, and they rise synchronously; in this process, the two clamping devices 400 and the welding workpiece are symmetrically distributed, and the second hoisting device 200 can act as a balancing lever. At this time, the two clamping devices 400 are stably lifted, and the welding workpiece is moved to the position of the welding body by the first hoisting device 100. By determining the welding position of the first clamping device 400, the welding position of the second clamping device 400 can be determined, which saves the time for positioning the welding workpiece points and can simultaneously position the two welding workpieces for welding, thereby improving the welding efficiency and ensuring the accuracy and stability of welding.

[0037] Please refer to the attached Fig. 9 , as a preferred adjustment method; wherein the adjustment device 300 includes two adjustment rods 310, the first ends of the two adjustment rods 310 are rotatably connected to each other, the second ends of the two adjustment rods 310 are rotatably connected to the corresponding connection workpieces 600, and an adjustment sleeve 320 is provided at the rotation connection of the two adjustment rods 310, and a position control device is provided between the adjustment sleeve 320 and the second lifting device 200. The position control device can lift the position of the adjustment sleeve 320, so that the adjustment sleeve 320 moves in a direction perpendicular to the second lifting device 200, and when the adjustment sleeve 320 moves toward the second lifting device 200 During the process, the adjustment rods 310 on both sides can synchronously deflect to a predetermined angle. During this process, the connected workpieces 600 on both sides can drive the clamping device 400 below to move synchronously toward the outside by the same distance, thereby changing the distance between the two clamping devices 400, corresponding to the welding position on the surface of the welding body, ensuring the accuracy of the welding point and meeting the welding requirements for welding bodies of different lengths. At the same time, the above-mentioned adjustment method can make the clamping devices 400 on both sides synchronously move toward the outside by the same distance, ensuring that the overall balance is not destroyed and the stability of the overall movement is guaranteed.

[0038] It should be noted here that, as an optional implementation method, the above-mentioned position control device can select a combination of a driving body 330 and an adjusting screw 340, the lower end of the adjusting screw 340 is rotatably connected to the upper end of the adjusting sleeve 320, and the main part of the adjusting screw 340 is threadedly connected to the driving body 330. The adjustment sleeve 320 can be controlled to rise and fall during the rotation of the adjusting screw 340. The self-locking function of the adjusting screw 340 can be utilized through the above-mentioned device to ensure the stability of the overall movement of the adjusting sleeve 320; as another optional implementation method, the above-mentioned position control device can also be adjusted by hydraulic telescopic means. The hydraulic position control method has a fast adjustment rate, can achieve rapid adjustment, and shorten the preparation time for welding.

[0039] Please refer to the attached Figure 5 -Attached Figure 7 The clamping device 400 includes a U-shaped first clamping body 410 and a U-shaped second clamping body 420. The second clamping body 420 is located inside the first clamping body 410. The bottom of the second clamping body 420 at least partially extends out of the first clamping body 410 to form a clamping area 421. During the process of clamping the welding workpiece, the welding workpiece is placed in the second clamping body 420, and the end faces on both sides are located inside the inner wall of the second clamping body 420. The welding workpiece can be mechanically locked at the clamping area 421. The parts are locked to ensure the stability of the locking of the overall structure; the second clamping body 420 is rotatably connected to the inner wall of the first clamping body 410, and the outer wall of the first clamping body 410 is installed with a deflection drive device 500 for controlling the rotation of the second clamping body 420. The deflection drive device 500 can control the second clamping body 420 to deflect by a predetermined angle, so that the bottom structure of the welding workpiece can be adapted to the surface of the welding body, ensuring the accuracy of the angle docking during welding, ensuring the accuracy of the welding position, and ensuring the stability and firmness of the weld.

[0040] Taking large-scale tunneling teeth and tunneling shafts as examples, the surface of the tunneling shaft is curved and huge. During the welding process of the tunneling teeth, the root of the tunneling teeth is in an arc shape that bends toward one side to increase the welding area and ensure stable welding. At the same time, during the welding process, the tunneling teeth will deflect to a certain angle according to the actual welding situation. The above-mentioned device can adjust the angle according to the actual welding situation without the need for external support for auxiliary adjustment, thereby ensuring stable welding, improving welding efficiency, and ensuring safety during the welding process.

[0041] As an implementation method of deflection, the deflection drive device 500 includes a first deflection shaft 510 and a second deflection shaft 520. The first deflection shaft 510 is fixedly connected to the second clamping body 420. The first deflection shaft 510 is rotationally connected to the first clamping body 410. The first deflection shaft 510 and the second deflection shaft 520 are driven by a gear set. An electric control device 530 is arranged on the outside of the second deflection shaft 520. The electric control device 530 can control the rotation of the second deflection shaft 520. 0 and the first deflection shaft 510 are transmitted through a gear set, so that the first deflection shaft 510 can drive the second clamping body 420 to deflect a predetermined angle; the gear connected to the second deflection shaft 520 is smaller than the gear connected to the first deflection shaft 510, the overall control torque is small, the deflection control is precise and simple; the above-mentioned deflection implementation method can also be implemented by selecting other driving structures such as connecting rods and chains, and the overall control of the first deflection shaft 510 can stably deflect a predetermined angle to achieve angular deflection control of large-mass welding workpieces.

[0042] In order to ensure the stability of the large-mass welding workpiece after deflection, a one-way locking device 700 is provided at the bottom of the first clamping body 410, and the one-way locking device 700 can be used to lock the first deflection shaft 510 after deflection, wherein the one-way locking device 700 includes an arc-shaped locking base 720 and a locking mounting seat 710, and a one-way locking tooth 721 is installed on the locking base 720 close to the gear set. One side surface of the one-way locking tooth 721 is inclined, and the other side surface is vertical, and an elastic component 730 is provided between the bottom of the locking base 720 and the locking mounting seat 710, and a ratchet can be provided on the surface of the first deflection shaft 510, and the ratchet can be engaged with the one-way locking tooth 721 during rotation. In cooperation with the locking tooth 721, during the rotation toward the first side, the ratchet can squeeze the one-way locking tooth 721, allowing the locking base 720 to move downward as a whole, and during the reverse rotation of the ratchet, under the action of the elastic component 730, the locking base 720 bounces upward and extends into the rotation trajectory of the ratchet to complete the locking cooperation to prevent the ratchet from rotating in the opposite direction. Through the cooperation between the ratchet and the one-way locking device 700, the one-way locking positioning of the first deflection shaft 510 can be completed to ensure the stability of the one-way rotation and avoid safety accidents; the elastic component 730 here can select a combination of a guide rod and a spring to apply an upward force to the locking base 720 to ensure the stability of the limit.

[0043] Among them, the connecting workpiece 600 includes a first connecting base 610 and a second connecting base 630. The first connecting base 610 and the second connecting base 630 are connected by a connecting chain 620. The connecting chain 620 is two symmetrically arranged groups, which can pull and limit the clamping device 400 from the front and rear positions to ensure the stability of the clamping device 400 during the lifting and hanging process; the second connecting base 630 is located at the bottom of the first connecting base 610, and the second connecting base 630 is slidingly connected to the upper end of the clamping device 400. A telescopic element is arranged between the second connecting base 630 and the clamping device 400. The telescopic element can adjust the position of the second connecting base 630 during the telescopic process, that is, it can adjust the position between the second connecting base 630 and the top of the clamping device 400, and can be adjusted synchronously with the center of gravity position of the welding workpiece to ensure that after the welding workpiece is deflected, the connecting workpiece 600, the clamping device 400 and the welding workpiece are located on the same straight line, thereby ultimately ensuring the stability of the overall position.

[0044] A deflection detection device 800 is arranged on the outside of the first deflection shaft 510. The deflection angle of the first deflection shaft 510 is detected by the deflection detection device 800, and the telescopic amount of the telescopic element is controlled according to the detected deflection angle. Under the condition that the appearance and mass of the welding workpiece are the same, the position of the welding workpiece after deflection can be determined by measuring the deflection angle of the second clamping body 420, and adjustments can be made according to the center of gravity position after deflection, so that the second connecting base 630 and the connecting chain 620 can be located directly above the center of gravity after deflection, thereby ensuring the stability of the position of the welding workpiece after deflection.

[0045] It should be noted here that the opening clamping direction of the clamping device 400 is perpendicular to the moving direction of the first lifting device 100, and the moving direction of the second connecting base 630 is the same as the opening extension direction of the clamping device 400. Through the cooperation of the deflection detection device 800 and the telescopic element, the position of the second connecting base 630 can be automatically adjusted according to the deflection angle of the welding workpiece. After adjustment, the overall center of gravity is stable, which meets the needs of stable welding and improves the welding efficiency.

[0046] The telescopic element mentioned above can be electrically controlled or hydraulically controlled. During the telescopic adjustment process, the outer side of the first clamping body 410 can be supported by auxiliary equipment, or a limiting rod can be set on the outer side of the first clamping body 410 to support and limit the position of the first clamping body 410, thereby ensuring that the second connecting base 630 can move smoothly and ensuring the stability of the overall deflection and movement.

[0047] In order to improve the accuracy and stability of telescopic control, the telescopic element includes a first telescopic element 631 and a second telescopic element 632. The first telescopic element 631 and the second telescopic element 632 are located on the same straight line. The first telescopic element 631 and the second telescopic element 632 are respectively located on both sides of the second connecting base 630, and can guide the second connecting base 630 from both sides and control its precise movement; the telescopic bases of the first telescopic element 631 and the second telescopic element 632 are fixedly connected to the surface of the clamping device 400, and the telescopic ends of the first telescopic element 631 and the second telescopic element 632 are fixedly connected to the second connecting base 630. The first telescopic element 631 and the second telescopic element 632 can ensure the stability of the movement of the overall structure and ensure smooth movement.

[0048] An angle detection device is provided at the bottom of the second clamping body 420, and the angle detection device includes at least two detection probes arranged at intervals. The detection probes are arranged along the length direction of the bottom of the second clamping body 420, and the deflection angle of the second clamping body 420 is controlled according to the distance data detected by the two detection probes. The length direction of the second clamping body 420 is the extension direction of the clamping opening inside the second clamping body 420. In the process of positioning before welding, the distance between the point and the surface of the welding body can be detected by the detection probe, and whether the bottom plane of the welding workpiece is consistent with the surface of the welding body can be inferred according to the distance obtained by the detection. After the detection results are consistent, the two clamping devices 400 are controlled by the first lifting device 100 to drive the welding workpiece to descend and fit with the surface of the welding body. The welding personnel can weld the two welding workpieces at the same time from two different workstations, thereby ensuring accurate welding and improving welding efficiency.

[0049] The first lifting device 100 includes an I-beam 110 and an electric hoist 120. The end of the lifting rope 130 of the electric hoist 120 is fixedly connected to a lifting platform 140. The lifting platform 140 is fixedly connected to the upper end of the second lifting device 200. The electric hoist 120 can move along the direction of the I-beam 110, and can complete the clamping and welding of the welding workpiece at different positions. At the same time, the electric hoist 120 can control the overall lifting and moving of the clamping device 400, so that the welding workpiece clamped by the clamping device 400 can be close to or away from the welding body, and adjusted in height to meet the welding requirements.

[0050] Refer to the attached Fig.11 Taking the welding between the tunneling teeth and the tunneling body as an example, the welding workpiece hoisting and positioning method using the above device includes the following steps:

[0051] S1. Measure the length of the welding body, determine the number of welds and the spacing distance x between adjacent welding workpieces based on the length of the welding body, and limit the welding body through the existing welding platform. At the same time, determine the spacing between different welding workpieces, the welding area and points based on the needs of excavation.

[0052] S2. Control the adjusting device 300 according to the spacing distance x calculated in step S1, and control the welding distance between the two clamping devices 400 to be Nx (N is selected as an integer such as 1, 2, 3 according to actual welding requirements). The adjusting device 300 can adjust the position between the two clamping devices 400 so that the distance between the two clamping devices 400 is an integer multiple of the spacing distance x between adjacent welding workpieces, so as to continuously complete the welding of the two clamping devices 400 and ensure the welding efficiency.

[0053] S3. Determine the initial welding position of the welding body, move the first clamping device 400 to the initial welding position through the first lifting device 100, and complete the synchronous welding of the two welding workpieces. During the welding process, the two clamping devices 400 are lifted by the first lifting device 100 at the same time. When the position of the first clamping device 400 is determined, the position of the second clamping device 400 is also determined. The welder can weld the welding workpieces in two different welding areas at the same time, and two welding points are determined at one time, thereby ensuring the welding efficiency.

[0054] At the same time, the two clamping devices 400 can independently adjust the deflection angle of the welding workpiece, and can be adjusted according to the surface curvature of the welding potential, meeting the welding requirements; the center of gravity of the welding workpiece is stable after deflection, and no external assistance is required after adjustment, ensuring rapid welding.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding workpiece hoisting and positioning device, wherein the welding workpiece is a working tooth, comprising a clamping device (400) for clamping the welding workpiece, the working tooth is hoisted and positioned to the surface of a rotating body by the clamping device (400), and a first hoisting device (100) for controlling the movement of the clamping device (400), characterized in that: The clamping devices (400) are two groups symmetrically arranged, a second lifting device (200) is arranged between the two groups of clamping devices (400) and the first lifting device (100), both sides of the second lifting device (200) are slidably connected with a connecting workpiece (600), the ends of the connecting workpiece (600) are connected to the corresponding upper ends of the clamping devices (400), and an adjusting device (300) is arranged at the bottom of the second lifting device (200), the adjusting device (300) is located between the two groups of connecting workpieces (600), and the distance between the two groups of connecting workpieces (600) is controlled by the adjusting device (300); The clamping device (400) comprises a U-shaped first clamping body (410) and a U-shaped second clamping body (420), the second clamping body (420) being located inside the first clamping body (410), the bottom of the second clamping body (420) at least partially extending out of the first clamping body (410) to form a clamping area (421), and the second clamping body (420) is rotatably connected to the inner wall of the first clamping body (410), and the outer wall of the first clamping body (410) is provided with a deflection drive device (500) for controlling the rotation of the second clamping body (420); The deflection drive device (500) comprises a first deflection shaft (510) and a second deflection shaft (520); the first deflection shaft (510) is fixedly connected to the second clamping body (420); the first deflection shaft (510) and the first clamping body (410) are rotatably connected; the first deflection shaft (510) and the second deflection shaft (520) are driven by a gear set; and an electric control device (530) is arranged outside the second deflection shaft (520); The connecting workpiece (600) includes a first connecting base (610) and a second connecting base (630), the first connecting base (610) and the second connecting base (630) are connected via a connecting chain (620), the second connecting base (630) is slidably connected to the upper end of the clamping device (400), a telescopic element is arranged between the second connecting base (630) and the clamping device (400), a deflection detection device (800) is arranged on the outer side of the first deflection shaft (510), the deflection angle of the first deflection shaft (510) is detected by the deflection detection device (800), and the telescopic amount of the telescopic element is controlled according to the detected deflection angle.

2. A welding workpiece hoisting and positioning device according to claim 1, characterized in that: The adjusting device (300) comprises two adjusting rods (310), the first ends of the two adjusting rods (310) are rotatably connected to each other, the second ends of the two adjusting rods (310) are rotatably connected to corresponding connecting workpieces (600), an adjusting sleeve (320) is provided at the rotatably connected position of the two adjusting rods (310), and a position control device is provided between the adjusting sleeve (320) and the second lifting device (200).

3. A welding workpiece hoisting and positioning device according to claim 1, characterized in that: A one-way locking device (700) is arranged at the bottom of the first clamping body (410), and the one-way locking device (700) includes an arc-shaped locking base (720) and a locking mounting seat (710), and a one-way locking tooth (721) is installed on the locking base (720) near the gear set, and an elastic component (730) is arranged between the bottom of the locking base (720) and the locking mounting seat (710).

4. A welding workpiece hoisting and positioning device according to claim 1, characterized in that: The telescopic element comprises a first telescopic element (631) and a second telescopic element (632); the first telescopic element (631) and the second telescopic element (632) are respectively located on two sides of a second connecting base (630); the telescopic bases of the first telescopic element (631) and the second telescopic element (632) are both fixedly connected to the surface of the clamping device (400); and the telescopic ends of the first telescopic element (631) and the second telescopic element (632) are both fixedly connected to the second connecting base (630).

5. The welding workpiece hoisting and positioning device according to claim 1, characterized in that: An angle detection device is provided at the bottom of the second clamping body (420), and the angle detection device comprises at least two detection probes arranged at intervals. The detection probes are arranged along the length direction of the bottom of the second clamping body (420), and the deflection angle of the second clamping body (420) is controlled according to distance data detected by the two detection probes.

6. A welding workpiece hoisting and positioning device according to claim 1, characterized in that: The first lifting device (100) comprises an I-beam (110) and an electric hoist (120); the end of a lifting rope (130) of the electric hoist (120) is fixedly connected to a lifting platform (140); and the lifting platform (140) is fixedly connected to the upper end of the second lifting device (200).

7. A welding workpiece hoisting and positioning method, characterized in that: The welding workpiece hoisting and positioning device according to any one of claims 1 to 6 comprises the following steps: S1. Measure the length of the welding body, and determine the number of welding workpieces and the spacing distance x between adjacent welding workpieces according to the length of the welding body; S2, controlling the adjustment device (300) according to the spacing distance x calculated in step S1, and controlling the welding distance between the two clamping devices (400) to be Nx; S3, determining the initial welding position of the welding body, moving the first clamping device (400) to the initial welding position by means of the first lifting device (100), and completing the synchronous welding of the two welding workpieces.

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