A multi-specification component fixing clamp based on gravity self-locking and a use method thereof

Abstract

The present application relates to the technical field of welding auxiliary equipment, in particular to a multi-specification component fixing clamp based on gravity self-locking and a use method, which comprises a support top plate, further comprising two connecting ears installed on the support top plate, and a rope connected to the two connecting ears; a first clamp shell and a second clamp shell, wherein the first clamp shell is located on the outer side of one end of the support top plate, the multi-specification component fixing clamp based on gravity self-locking and the use method can accurately clamp components of different sizes, and assist in welding the components, and in the present application, a clamping mechanism is arranged on the first clamp shell and the second clamp shell, so that the pipe can be stably clamped and fixed, the clamping mechanism at the first clamp shell first clamps and fixes the pipe, which can quickly position the pipe, and prevent the support top plate from shaking during hoisting, thereby affecting the quick fixing of the pipe.

Description

Technical Field

[0001] This invention relates to the field of welding auxiliary equipment technology, specifically to a gravity-based self-locking multi-specification component fixing fixture and its usage method. Background Technology

[0002] Due to structural design requirements, the engineering construction necessitates the use of a large number of welded hollow pipes. These pipes are large in size and heavy, and there is a safety hazard of pipes slipping during forklift handling before welding. Furthermore, it is difficult to prioritize the pipes in the middle among numerous components during forklift handling, and they cannot be accurately placed in the required position when transported to the welding location. In addition, the paint on the pipe components is difficult to protect effectively during handling, greatly increasing the cost of finished product protection. Existing ordinary clamps on the market cannot meet the requirements. Therefore, we propose a gravity self-locking multi-specification component fixing clamp and its usage method. Summary of the Invention

[0003] The purpose of this invention is to provide a gravity-based self-locking multi-specification component fixing clamp and its usage method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a gravity-based self-locking multi-specification component fixing clamp, comprising a supporting top plate, and further comprising: Two connecting lugs are installed on the support top plate, and ropes are connected to the two connecting lugs; A first clamping shell and a second clamping shell, wherein the first clamping shell is located on the outer side of one end of the supporting top plate, and the second clamping shell is located below the supporting top plate; Both the first clamp housing and the second clamp housing are equipped with clamping mechanisms for fixing the pipe before welding. A position locking mechanism is provided, wherein the first clamp housing is connected to one end of the support top plate via the position locking mechanism; A position adjustment mechanism is provided, and the second clamp housing is connected to the second clamp housing via the position adjustment mechanism.

[0005] Both the first clamp housing and the second clamp housing are U-shaped, and each of the first clamp housing and the second clamp housing is provided with two sliding grooves. The two sliding grooves are the same in shape and size and are located at both ends of the first clamp housing or the second clamp housing, respectively.

[0006] The clamping mechanism includes two sliding sleeves that are slidably connected to two sliding grooves in the first clamping housing or the second clamping housing, and a connecting rod is fixedly connected between the two sliding sleeves. The sliding sleeve inside the first clamp housing is connected to a drive mechanism for driving it. The outer side of the second clamp housing is connected to a connecting mechanism for connecting to it; The connecting rod is rotatably connected to two upper connecting rods, and the two upper connecting rods are staggered. The bottom of each of the two upper connecting rods is fixedly connected to a positioning shaft, and the two positioning shafts are rotatably connected to a lower connecting rod. The two lower connecting rods are arranged in a cross pattern, and a rotating shaft rotatably connects the two lower connecting rods; The bottom of the lower connecting rod is equipped with a clamping end for clamping the pipe to be welded. Through the clamping mechanism, the component is clamped and fixed.

[0007] The driving mechanism includes a movable block located outside the slide groove and fixedly connected to a sliding sleeve near the support top plate. A driving screw passes through the movable block and is threadedly connected to the movable block. The top and bottom of the drive screw are respectively rotatably connected to fixed plates; The two fixing plates are fixedly installed on the outside of the first clamp housing or the second clamp housing; A drive motor is installed on the fixed plate at the bottom of the drive screw. The drive motor is used to drive the drive screw and, through the provided drive mechanism, to connect and drive a sliding sleeve at the first clamp housing.

[0008] The position locking mechanism includes a support sleeve fixedly connected to the top of the first clamp housing; A rotating sleeve is rotatably connected to the bottom outer side of the support sleeve, and a rotating mechanism for driving the rotating sleeve is installed on the top of the first clamping housing. A camera is installed at the bottom of the rotating mechanism. The bottom of the rotating sleeve is fixedly connected to a rotating frame, and the rotating frame is slidably disposed on the top of the first clamp housing. The top of the rotating frame is an arc-shaped end, and a limiting groove is provided at the arc-shaped end. A limiting rod slides through the limiting groove, and one end of the limiting rod located on the outside of the rotating frame is fixedly connected to one side of the supporting top plate. The limiting rod is equipped with a swing mechanism at one end inside the rotating frame; Two crossbars are rotatably connected at the connecting end of the swing mechanism, and a connecting sleeve is installed between the two crossbars. The connecting sleeve is fixedly connected to the support sleeve. Through the provided position locking mechanism, the position of the support top plate relative to the first clamp shell is positioned.

[0009] The rotating mechanism includes a receiving shell fixedly installed on the top of the first clamping shell, a camera installed at the bottom of the receiving shell, a rotating motor installed inside the receiving shell, a first rotating gear fixedly connected to the output end of the rotating motor, a second rotating gear meshing with the outer side of the first rotating gear, and the second rotating gear fixedly sleeved on the rotating sleeve. Through the provided rotating mechanism, the rotating sleeve is driven.

[0010] The swing mechanism includes a limiting sleeve that is rotatably connected to two limiting rods. A semi-circular ring is rotatably connected between the two limiting sleeves. The semi-circular ring is fixedly connected to the limiting rods. Through the swing mechanism, the angle between the first clamp shell and the supporting top plate is connected.

[0011] The position adjustment mechanism includes a moving mechanism installed at the bottom of one end of the support top plate. A support block is rotatably connected to the moving mechanism. The support block is fixedly installed on the top of the second clamping housing and is slidably connected to the bottom of the support top plate. Through the provided position adjustment mechanism, the position of the second clamping housing relative to the support top plate can be adjusted.

[0012] The moving mechanism includes two side plates installed at the bottom of the supporting top plate, and a moving screw is rotatably connected between the two side plates. A moving motor for driving the moving screw is installed on one of the side plates. The support block is threaded onto the outside of the moving lead screw, and through the provided moving mechanism, it achieves the function of stably driving the support block at the top of the second clamping housing.

[0013] A method for using a gravity-based self-locking multi-specification component fixing clamp includes the following steps: Step 1: Before welding the pipe, the hoisting equipment is connected to the rope, and the rope passes through the supporting top plate to lift the first clamp shell and the second clamp shell above the pipe to be welded. Since the pipe is stacked, the first clamp shell and the second clamp shell are placed between the supporting top plate, making the supporting top plate tilted, so that the two clamping ends at the bottom of the first clamp shell can quickly make contact with the pipe to be welded. Step 2: After the two clamping ends at the bottom of the first clamping housing clamp the pipe to be welded, the first clamping housing and the pipe are relatively fixed. The supporting top plate continues to move downward. While it continues to move downward, the second clamping housing moves along one end of the supporting top plate under the drive of the moving mechanism. While it moves, the two clamping ends at the bottom of the second clamping housing further fix the pipe to be welded until the limiting rod moves to the bottom of the limiting groove. Then the supporting top plate moves to a position parallel to the pipe, and at this time the pipe to be welded is clamped and fixed. Step 3: The pipe to be welded is hoisted to the welding position. At this time, the position of the first clamping shell is relatively fixed relative to the welding table. The position of the second clamping shell can be adjusted by the rotating mechanism, thereby adjusting the position of the clamped pipe during welding and assisting the pipe to be welded quickly.

[0014] The present invention has at least the following beneficial effects: This invention enables precise clamping of components of varying sizes and assists in welding. The invention utilizes clamping mechanisms on both the first and second clamping shells to stably clamp and fix the pipe. The clamping mechanism on the first clamping shell first clamps and fixes the pipe, achieving rapid positioning and preventing the supporting top plate from swaying during hoisting, which would affect the rapid fixation of the pipe. The connecting mechanism on the second clamping shell allows the pipe to be clamped at its two bottom clamping ends. Then, the supporting top plate moves upward, allowing the component to be clamped by its own weight, ensuring clamping stability. The fixing clamps of this invention achieve the functions of hoisting, transferring, and assisting welding of components of different specifications before welding, thereby ensuring production efficiency for components of various sizes. Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a front view of the entire invention; Figure 4 This is a schematic diagram of the first clamp shell structure of the present invention; Figure 5 This is a schematic diagram of the support sleeve structure of the present invention; Figure 6 This is a schematic diagram of the positioning shaft structure of the present invention; Figure 7 This is a schematic diagram of the drive mechanism structure of the present invention; Figure 8 This is a schematic diagram of the connection mechanism structure of the present invention; Figure 9 This is a schematic diagram of the upper and lower connecting rods of the present invention; Figure 10 This is a front view schematic diagram of the clamping mechanism of the present invention; Figure 11 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 12 This is a side view schematic diagram of the ball bearing structure of the present invention.

[0015] In the diagram: 1-Supporting top plate; 11-Connecting ear; 12-Rope; 2-First clamp housing; 3-Second clamp housing; 4-Clamping mechanism; 41-Sliding sleeve; 42-Connecting rod; 43-Drive mechanism; 431-Moving block; 432-Drive screw; 433-Fixed plate; 434-Drive motor; 44-Connecting mechanism; 441-Slider; 442-Connecting rope; 45-Upper connecting rod; 46-Positioning shaft; 47-Lower connecting rod; 48-Rotating shaft; 49-Clamping end; 491-Guide groove; 492-Ball bearing; 5-Position locking mechanism; 51-Support 52-Support sleeve; 53-Rotating sleeve; 53-Rotating mechanism; 531-Receiving shell; 532-Rotating motor; 533-First rotating gear; 534-Second rotating gear; 54-Camera; 55-Rotating frame; 551-Arched end; 552-Limiting groove; 56-Limiting rod; 57-Swinging mechanism; 571-Limiting sleeve; 572-Semi-circular ring; 58-Crossbar; 59-Connecting sleeve; 6-Position adjustment mechanism; 61-Moving mechanism; 611-Side plate; 612-Moving lead screw; 613-Moving motor; 62-Support block; 7-Slide groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-10 Example 1 A gravity-based self-locking multi-specification component fixing clamp includes a supporting top plate 1, and further includes: Two connecting lugs 11 are installed on the supporting top plate 1, and ropes 12 are connected to the two connecting lugs 11. The hoisting mechanism is connected to the ropes 12 to achieve the function of hoisting the supporting top plate 1. The first clamping shell 2 and the second clamping shell 3 are located on the outer side of one end of the supporting top plate 1, and the second clamping shell 3 is located below the supporting top plate 1. Both the first clamping shell 2 and the second clamping shell 3 are U-shaped, and both the first clamping shell 2 and the second clamping shell 3 are provided with two sliding grooves 7. The two sliding grooves 7 are the same in shape and size, and are located at both ends of the first clamping shell 2 or the second clamping shell 3 respectively. Both the first clamp housing 2 and the second clamp housing 3 are equipped with clamping mechanisms 4 for fixing the pipe before welding. The clamping mechanism 4 includes two sliding sleeves 41 that are slidably connected to two sliding grooves 7 of the first clamping housing 2 or the second clamping housing 3 respectively, and a connecting rod 42 is fixedly connected between the two sliding sleeves 41. The inner side of the first clamp housing 2 is connected to the sliding sleeve 41, which is used to drive it. The driving mechanism 43 includes a moving block 431 located outside the sliding groove 7 and fixedly connected to the sliding sleeve 41 near the support top plate 1. A driving screw 432 passes through the moving block 431 and is threadedly connected to the moving block 431. The top and bottom of the drive screw 432 are respectively rotatably connected to the fixing plate 433; Two fixing plates 433 are fixedly installed on the outside of the first clamp housing 2 or the second clamp housing 3; A drive motor 434 is installed at the fixed plate 433 at the bottom of the drive screw 432. The drive motor 434 is used to drive the drive screw 432. The drive motor 434 runs, which in turn causes the moving screw 612 at the first clamp housing 2 to rotate. While the moving screw 612 rotates, it provides driving force to the moving block 431 on its outer side, so that the moving block 431 moves along the limiting groove 552 under the limiting groove 552. The outer side of the second clamp housing 3 is connected to the sliding sleeve 41, which is connected to the connecting mechanism 44. In this embodiment, the connecting mechanism 44 is a slider 441 fixedly connected to the sliding sleeve 41 and located on the outer side of the second clamp housing 3. A connecting rope 442 is installed on the slider 441. The connecting rope 442 is fixedly connected to the rope 12 at the connecting ear 11 at the top of the support plate 1, and the rope 12 is slidably connected to the connecting ear 11. That is, the support plate 1 is provided with a moving groove at the position corresponding to the connecting rope 442. When the hoisting equipment hoists the rope 12, the rope 12 pulls and simultaneously drives the connecting rope 442 to move upward. Thus, the connecting rope 442 pulls the slider 441, which further causes the two upper connecting rods 45 to rotate and move upward through the bottom positioning mechanism to drive the lower connecting rod 47. This achieves the function of clamping and fixing the pipe by its own weight. Two upper connecting rods 45 are rotatably connected to the connecting rod 42, and the two upper connecting rods 45 are staggered. The bottom of the two upper connecting rods 45 are respectively fixedly connected to the positioning shafts 46, and the two positioning shafts 46 are respectively rotatably connected to the lower connecting rods 47; The two lower connecting rods 47 are arranged in a cross shape, and a rotating shaft 48 is rotatably connected between the two lower connecting rods 47; The bottom of the lower connecting rod 47 is equipped with a clamping end 49 for clamping the pipe to be welded. In this embodiment, the clamping end 49 is provided with an anti-slip pad, which can protect components of different sizes when clamping. Specific implementation process: In this embodiment, when clamping the pipe, the use of only one clamping mechanism 4 can easily lead to instability of the pipe during welding clamping. Therefore, two clamping mechanisms 4 are used in this embodiment. However, when fixing the pipe by hoisting, the two clamping mechanisms 4 are connected to the first clamping shell 2 and the second clamping shell 3 respectively. Therefore, it is not possible to quickly position the two clamping mechanisms 4 at the same time during hoisting. Therefore, in this embodiment, when the pipe is hoisted before welding, the first clamp shell 2 is set at one end of the supporting top plate 1. At the same time, due to the lever principle, that is, the force is uneven at both ends of the bottom of the supporting top plate 1, the center of gravity of the supporting top plate 1 is deviated, so that the supporting top plate 1 is tilted. That is, the first clamp shell 2 is located below the second clamp shell 3. That is, only one clamping part is fixed first, and then the second clamping part is fixed. In this way, the pipe can be quickly clamped and fixed, while preventing the pipe from being unable to be clamped for a long time due to the continuous shaking of the supporting top plate 1. Specifically, the two clamping ends 49 at the bottom of the first clamp housing 2 are remotely controlled by the operator via camera 54. This control process is well-known to those skilled in the art, so it will not be elaborated further. After the two clamping ends 49 at the bottom of the first clamp housing 2 move to the position where the pipe needs to be fixed, the drive motor 434 runs, thereby further rotating the drive screw 432. While the drive screw 432 rotates, it provides driving force to the moving block 431. The moving block 431 drives the sliding rod to move inside the first clamp housing 2 through the sliding sleeve 41, thereby causing the two upper connecting rods 45 to drive the corresponding lower connecting rods 47 to rotate through the positioning shaft 46. The two lower connecting rods 47 rotate around the rotation shaft 48 until the two lower connecting rods 47 clamp and fix the pipe through the clamping ends 49 at the bottom. Then the drive motor 434 stops running. At this time, the clamping mechanism 4 at the first clamp housing 2 clamps and fixes the pipe to be welded.

[0018] The position locking mechanism 5 connects the first clamp housing 2 to one end of the support top plate 1. The position locking mechanism 5 includes a support sleeve 51 fixedly connected to the top of the first clamp housing 2. A rotating sleeve 52 is rotatably connected to the bottom outer side of the support sleeve 51, and a rotating mechanism 53 for driving the rotating sleeve 52 is installed on the top of the first clamping housing 2. A camera 54 is installed at the bottom of the rotating mechanism 53. The rotating mechanism 53 includes a receiving housing 531 fixedly installed on the top of the first clamping housing 2. The camera 54 is installed at the bottom of the receiving housing 531. A rotating motor 532 is installed inside the receiving housing 531. A first rotating gear 533 is fixedly connected to the output end of the rotating motor 532. A second rotating gear 534 is meshed with the outer side of the first rotating gear 533. The second rotating gear 534 is fixedly sleeved on the rotating sleeve 52. The bottom of the rotating sleeve 52 is fixedly connected to a rotating frame 55, and the rotating frame 55 is slidably disposed on the top of the first clamp housing 2. The top of the rotating frame 55 is an arc-shaped end 551, and a limiting groove 552 is provided at the arc-shaped end 551. In this embodiment, a rotating mechanism 53 is provided, which is a rotating frame 55 rotatably connected to the top of the first clamping housing 2. On the one hand, it is convenient to adjust the position of the supporting top plate 1 through the rotating frame 55 when the first clamping housing 2 clamps the component, so that the supporting top plate 1 and the pipe are horizontally distributed. On the other hand, when welding, the supporting top plate 1 can be rotated relative to the pipe, so as to further achieve the function of more precise adjustment of the welding position during pipe welding. A limiting rod 56 slides through the limiting groove 552, and one end of the limiting rod 56 located on the outside of the rotating frame 55 is fixedly connected to one side of the supporting top plate 1. A swing mechanism 57 is installed at one end of the limiting rod 56 inside the rotating frame 55. The swing mechanism 57 includes a limiting sleeve 571 that is rotatably connected to the two limiting rods 56 respectively. A semi-circular ring 572 is rotatably connected between the two limiting sleeves 571. The semi-circular ring 572 is fixedly connected to the limiting rod 56. Two horizontal bars 58 are rotatably connected at the connecting end of the swing mechanism 57. A connecting sleeve 59 is installed between the two horizontal bars 58, and the connecting sleeve 59 is fixedly connected to the support sleeve 51. Specific implementation process: After the clamping mechanism 4 at the first clamp housing 2 clamps and fixes the pipe, the supporting top plate 1 continues to move down as the hoisting equipment runs. While it continues to move down, the supporting top plate 1 rotates relative to the cross bar 58 through the connecting sleeve 59 at the semi-circular ring 572 under the connection of the limiting rod 56 at one end, until the limiting rod 56 rotates to the bottom of the limiting groove 552. At this time, the supporting top plate 1 and the pipe are distributed in a parallel state. As the supporting top plate 1 continues to move downward, the clamping mechanism 4 at the second clamping shell 3 at the bottom of the supporting top plate 1 contacts the pipe through the clamping end 49 until the pipe is clamped and fixed.

[0019] The position adjustment mechanism 6 is connected to the second clamp housing 3.

[0020] The position adjustment mechanism 6 includes a moving mechanism 61 installed at the bottom of one end of the support top plate 1. A support block 62 is rotatably connected to the moving mechanism 61. The support block 62 is fixedly installed on the top of the second clamping housing 3 and is slidably connected to the bottom of the support top plate 1. The moving mechanism 61 includes two side plates 611 installed at the bottom of the support top plate 1. A moving screw 612 is rotatably connected between the two side plates 611. A moving motor 612 for driving the moving screw 612 is installed on one of the side plates 611. The moving motor 612 rotates the moving screw 612 at the bottom of the support top plate 1. While the moving screw 612 is rotating, it provides driving force to the support block 62, thereby adjusting the position of the second clamping housing 3 at the bottom of the support top plate 1 through the support block 62. The support block 62 is threaded onto the outside of the moving lead screw 612.

[0021] Specific implementation process: In this embodiment, a position adjustment mechanism 6 is set up. On the one hand, when the support top plate 1 moves down, the position of the support block 62 is adjusted, thereby adjusting the position of the first clamp shell 2 relative to the first clamp shell 2, so that the support top plate 1 is subjected to uneven force at both ends of its bottom, and the support top plate 1 is inclined downward with the first clamp shell 2. After the first clamping shell 2 quickly fixes the pipe, the second clamping shell 3, driven by the moving mechanism 61, makes the supporting top plate 1 parallel to the pipe. At the same time, the second clamping shell 3 clamps and fixes the pipe, and through the operation of the hoisting mechanism, the supporting top plate 1 is hoisted, and the pipe is kept horizontal during the hoisting and pipe welding process.

[0022] A method for using a gravity-based self-locking multi-specification component fixing clamp includes the following steps: Step 1: Before welding the pipe, the hoisting equipment is connected to the rope 12. The rope 12 lifts the first clamp shell 2 and the second clamp shell 3 above the pipe to be welded through the supporting top plate 1. Since the pipe is stacked, the first clamp shell 2 and the second clamp shell 3 are placed between the supporting top plate 1, making the supporting top plate 1 tilted, so that the two clamping ends 49 at the bottom of the first clamp shell 2 quickly come into contact with the pipe to be welded. Step 2: After the two clamping ends 49 at the bottom of the first clamping housing 2 clamp the pipe to be welded, the first clamping housing 2 and the pipe are relatively fixed. The supporting top plate 1 continues to move downward. While it continues to move downward, the second clamping housing 3 moves along one end of the supporting top plate 1 under the drive of the moving mechanism 61. While it moves, the two clamping ends 49 at the bottom of the second clamping housing 3 further fix the pipe to be welded until the limiting rod 56 moves to the bottom of the limiting groove 552. Then the supporting top plate 1 moves to a position parallel to the pipe. At this time, the pipe to be welded is clamped and fixed. Step 3: The required pipe is hoisted to the welding position. At this time, the position of the first clamping shell 2 is relatively fixed relative to the welding table. The position of the second clamping shell 3 can be adjusted by the rotating mechanism 53, thereby adjusting the position of the clamped pipe during welding and assisting the pipe to be welded quickly.

[0023] Please see Figure 11-12 Example 2 Example 2 is a further supplement to Example 1. Specifically, the clamping end 49 is an arc-shaped end 551, and a guide groove 491 is provided on the side of the two clamping ends 49 that are far apart from each other, i.e., on the back side of the clamping end 49. Multiple guide shafts are rotatably connected to the guide groove 491, and ball bearings 492 are fixedly installed at the guide shafts. Therefore, when the first clamping shell 2 and the second clamping shell 3 clamp the pipe before welding, since the pipe is placed in a stacked manner, when the first clamping shell 2 and the second clamping shell 3 move to the pipe to be clamped and clamp and fix the pipe through the two clamping ends 49, the outer side of the clamping end 49 can easily come into contact with the adjacent pipe. At this time, the ball bearing 492 is provided to change the sliding movement of the clamping end 49 in contact with the adjacent pipe into rolling contact, thereby effectively reducing the resistance of the clamping end 49 and simultaneously protecting the adjacent pipe, and further protecting the paint on the outer side of the adjacent pipe.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gravity-based self-locking multi-specification component fixing clamp, comprising a supporting top plate (1), characterized in that, It also includes: Two connecting ears (11) are installed on the supporting top plate (1), and ropes (12) are connected to the two connecting ears (11). The first clamping shell (2) and the second clamping shell (3) are located on the outside of one end of the supporting top plate (1), and the second clamping shell (3) is located below the supporting top plate (1). Both the first clamp housing (2) and the second clamp housing (3) are equipped with clamping mechanisms (4) for fixing the pipe before welding. Position locking mechanism (5), the first clamp housing (2) is connected to one end of the support top plate (1) through the position locking mechanism (5); The position adjustment mechanism (6) is connected to the second clamp housing (3) through the position adjustment mechanism (6); The position locking mechanism (5) includes a support sleeve (51) fixedly connected to the top of the first clamp housing (2); The support sleeve (51) is rotatably connected to the outer side of the bottom of the rotating sleeve (52), and the top of the first clamping shell (2) is equipped with a rotating mechanism (53) for driving the rotating sleeve (52), and the bottom of the rotating mechanism (53) is equipped with a camera (54). The bottom of the rotating sleeve (52) is fixedly connected to a rotating frame (55), and the rotating frame (55) is slidably disposed on the top of the first clamp housing (2). The top of the rotating frame (55) is an arc-shaped end (551), and a limiting groove (552) is provided at the arc-shaped end (551). The limiting groove (552) slides through the limiting rod (56), and one end of the limiting rod (56) located outside the rotating frame (55) is fixedly connected to one side of the supporting top plate (1). The limiting rod (56) is equipped with a swing mechanism (57) at one end inside the rotating frame (55); The swing mechanism (57) has two crossbars (58) rotatably connected at the connecting end, and a connecting sleeve (59) is installed between the two crossbars (58). The connecting sleeve (59) is fixedly connected to the support sleeve (51).

2. A gravity-based self-locking multi-specification component fixing clamp according to claim 1, characterized in that: Both the first clamp shell (2) and the second clamp shell (3) are U-shaped, and both the first clamp shell (2) and the second clamp shell (3) are provided with two sliding grooves (7). The two sliding grooves (7) are the same in shape and size, and are located at the two ends of the first clamp shell (2) or the second clamp shell (3), respectively.

3. A gravity-based self-locking multi-specification component fixing clamp according to claim 2, characterized in that: The clamping mechanism (4) includes two sliding sleeves (41) that are slidably connected to two sliding grooves (7) of the first clamping housing (2) or the second clamping housing (3), and a connecting rod (42) is fixedly connected between the two sliding sleeves (41). The sliding sleeve (41) inside the first clamp housing (2) is connected to a drive mechanism (43) for driving it. The outer sleeve (41) of the second clamp housing (3) is connected to a connecting mechanism (44) for connecting to it. The connecting rod (42) is rotatably connected to two upper connecting rods (45), and the two upper connecting rods (45) are staggered. The bottom of each of the two upper connecting rods (45) is fixedly connected to a positioning shaft (46), and the two positioning shafts (46) are rotatably connected to a lower connecting rod (47). The two lower connecting rods (47) are arranged in a cross shape, and a rotating shaft (48) is rotatably connected between the two lower connecting rods (47). The bottom of the lower connecting rod (47) is equipped with a clamping end (49) for clamping the pipe to be welded.

4. A gravity-based self-locking multi-specification component fixing clamp according to claim 3, characterized in that: The drive mechanism (43) includes a movable block (431) located outside the slide groove (7) and fixedly connected to a sliding sleeve (41) near the support top plate (1). A drive screw (432) passes through the movable block (431) and is threadedly connected to the movable block (431). The top and bottom of the drive screw (432) are respectively rotatably connected to the fixing plate (433); The two fixing plates (433) are fixedly installed on the outside of the first clamp housing (2); A drive motor (434) is installed at the fixing plate (433) at the bottom of the drive screw (432), and the drive motor (434) is used to drive the drive screw (432).

5. A gravity-based self-locking multi-specification component fixing clamp according to claim 1, characterized in that: The rotating mechanism (53) includes a receiving shell (531) fixedly installed on the top of the first clamping shell (2), the camera (54) is installed at the bottom of the receiving shell (531), a rotating motor (532) is installed inside the receiving shell (531), a first rotating gear (533) is fixedly connected to the output end of the rotating motor (532), a second rotating gear (534) is meshed on the outside of the first rotating gear (533), and the second rotating gear (534) is fixedly sleeved on the rotating sleeve (52).

6. A gravity-based self-locking multi-specification component fixing clamp according to claim 1, characterized in that: The swing mechanism (57) includes a limiting sleeve (571) that is rotatably connected to two crossbars (58), and a semi-circular ring (572) is rotatably connected between the two limiting sleeves (571). The semi-circular ring (572) is fixedly connected to the limiting rod (56).

7. A gravity-based self-locking multi-specification component fixing clamp according to claim 6, characterized in that: The position adjustment mechanism (6) includes a moving mechanism (61) installed at the bottom of one end of the support top plate (1). A support block (62) is rotatably connected to the moving mechanism (61). The support block (62) is fixedly installed on the top of the second clamping housing (3), and the support block (62) is slidably connected to the bottom of the support top plate (1).

8. A gravity-based self-locking multi-specification component fixing clamp according to claim 7, characterized in that: The moving mechanism (61) includes two side plates (611) installed at the bottom of the supporting top plate (1), and a moving screw (612) is rotatably connected between the two side plates (611). A moving motor (613) for driving the moving screw (612) is installed on one of the side plates (611). The support block (62) is threaded onto the outside of the moving lead screw (612).

9. The method of using a gravity-based self-locking multi-specification component fixing clamp according to claim 8, characterized in that, Includes the following steps: Step 1: Before welding the pipe, the hoisting equipment is connected to the rope (12). The rope (12) is connected to the support plate (1) to lift the first clamp shell (2) and the second clamp shell (3) to the top of the pipe to be welded. Since the pipe is stacked, the first clamp shell (2) and the second clamp shell (3) are between the support plate (1), so that the support plate (1) is tilted, and the two clamping ends (49) at the bottom of the first clamp shell (2) quickly come into contact with the pipe to be welded. Step 2: After the two clamping ends (49) at the bottom of the first clamping shell (2) clamp the pipe to be welded, the first clamping shell (2) and the pipe are relatively fixed. The supporting top plate (1) continues to move down. While it continues to move down, the second clamping shell (3) moves along one end of the supporting top plate (1) under the drive of the moving mechanism (61). While it moves, the two clamping ends (49) at the bottom of the second clamping shell (3) further fix the pipe to be welded until the limiting rod (56) moves to the bottom of the limiting groove (552) and the supporting top plate (1) moves to a position parallel to the pipe. At this time, the pipe to be welded is clamped and fixed. Step 3: The required pipe is hoisted to the welding position. At this time, the position of the first clamp shell (2) is relatively fixed relative to the welding table. The position of the second clamp shell (3) is adjusted by the rotating mechanism (53), thereby realizing the position adjustment of the clamped pipe during welding and assisting the pipe to be welded quickly.

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