Quick-release bracket for angle steel welding of power transmission line iron tower

Abstract

The invention is suitable for the technical field of welding tools, and provides a power transmission line iron tower angle steel welding quick-release bracket which comprises a welding frame used for being connected with vertical angle steel in an inserted mode. Supporting parts used for guiding and limiting transverse angle steel are symmetrically arranged on the welding frame in a sliding mode. The two supporting parts are used for clamping a transverse steel plate; a guide part is fixedly connected to the supporting part; sliding parts used for being matched with the inclined supporting plates are symmetrically arranged on the welding frame in a sliding mode. According to the welding and quick-dismounting bracket, cooperative positioning, automatic clamping, efficient welding and quick dismounting are integrated, and the problems that in traditional angle steel welding, procedures are tedious, efficiency is low, dismounting is inconvenient and the like are effectively solved; the method is particularly suitable for batch welding operation of angle steel joints in power transmission line iron tower manufacturing.

Description

Technical Field

[0001] This invention relates to the field of welding tooling technology, and more specifically, to a quick-release bracket for welding angle steel of transmission line towers. Background Technology

[0002] In the manufacturing and construction of transmission line towers, angle steel, as a primary load-bearing component, is widely used in key parts of the tower, such as columns, crossarms, and diagonal braces. Typically, the assembly of a tower relies on welded connections between multiple angle steel components, with a typical node structure as follows: Figure 5 As shown: The horizontal steel plate needs to be vertically welded to the side of the vertical angle steel, then two diagonal bracing plates are symmetrically welded between the vertical angle steel and the horizontal steel plate, and finally the two sets of horizontal angle steel are symmetrically welded to the surface of the horizontal steel plate, thus forming a connection node with sufficient rigidity and strength for subsequent assembly of the overall iron tower.

[0003] Currently, the following technical bottlenecks are commonly encountered in the aforementioned multi-component welding operations: The positioning process is cumbersome: multiple independent clamps or support devices are required to position and fix the vertical angle steel, horizontal steel plate, diagonal brace and horizontal angle steel one by one, resulting in intermittent processes and time-consuming adjustments.

[0004] Coordinated positioning is difficult: the relative positions and angles between the components are strictly required, especially the inclination angle of the bracing plate and its fit with the vertical angle steel and the horizontal steel plate, which can easily lead to cumulative errors during multiple clamping.

[0005] Low welding efficiency: Due to the need for multiple clamping, adjustment and fixing, the preparation time for welding operations is too long, which affects the overall construction progress. In addition, the repeated positioning process can easily cause component deformation or misalignment, which affects the welding quality.

[0006] Inconvenient disassembly: After welding, traditional fixtures are often complex in structure and difficult to disassemble, which affects the efficiency of workpiece removal and tooling recycling.

[0007] Therefore, there is an urgent need for a special tooling that can achieve one-time collaborative positioning of multiple components, reliable clamping, and easy and quick disassembly after welding, so as to improve the efficiency and accuracy of welding angle steel for transmission line towers. Summary of the Invention

[0008] To address the shortcomings of existing technologies, the present invention aims to provide a quick-release bracket for welding angle steel of transmission line towers. This invention integrates collaborative positioning, automatic clamping, efficient welding and rapid disassembly, effectively solving the problems of cumbersome procedures, low efficiency and inconvenient disassembly in traditional angle steel welding. It is particularly suitable for batch welding operations of angle steel nodes in the manufacturing of transmission line towers.

[0009] To achieve the above objectives, the present invention provides the following technical solution: A quick-release bracket for welding angle steel of transmission line towers includes a welding frame for inserting vertical angle steel; symmetrically slidable support portions for guiding and limiting transverse angle steel are provided on the welding frame; two support portions are used to clamp transverse steel plates; guide portions are fixedly connected to the support portions; symmetrically slidable sliding portions for matching diagonal bracing plates are provided on the welding frame; symmetrically slidable clamping portions for clamping both ends of the transverse angle steel are provided on the welding frame; the guide portion includes a straight plate; an inclined plate is fixed to the end of the straight plate; the sliding portion includes a U-shaped frame that slides with the welding frame; an inclined baffle plate that matches the inclined side of the diagonal bracing plate is fixed to the end of the U-shaped frame; ear plates are symmetrically fixed to opposite sides of the inclined baffle plate; an extension rod is fixed to the inclined side of the inclined baffle plate; a ball head that matches the inclined plate is fixed to the end of the extension rod; a return spring is connected between the U-shaped frame and the welding frame.

[0010] The invention is further configured such that: the welding frame includes a U-shaped plate; vertical plates are fixed at both ends of the U-shaped plate; a U-shaped seat is fixed at the bottom end of the vertical plate; a slot for inserting and engaging with a vertical angle steel is provided on the side of the U-shaped seat; and a controller is fixed on the side of the U-shaped plate.

[0011] The invention is further configured such that: a bidirectional lead screw is rotatably disposed between the two U-shaped seats; slide rods are symmetrically fixed between the two U-shaped seats on both sides of the bidirectional lead screw; pressure plates that are threadedly rotated and rotatably engaged with the bidirectional lead screw are symmetrically slidably disposed between the two slide rods; a servo motor electrically connected to the output end of the controller is fixedly installed on the side of one of the U-shaped seats; and the output end of the servo motor is fixedly connected to one end of the bidirectional lead screw.

[0012] The invention is further configured such that: guide rods are symmetrically fixed to the side of the U-shaped plate; a side plate is fixed between the ends of the two guide rods; a bidirectional screw is rotatably disposed between the side plate and the U-shaped plate; a stepper motor electrically connected to the output end of the controller is fixed to the side of the U-shaped plate; the output end of the stepper motor is electrically connected to the bidirectional screw; the support part includes a support plate; an ear seat is fixed to the side of the support plate; a screw hole is opened on the side of the ear seat to rotate with the thread of the bidirectional screw, and guide holes are symmetrically opened on its side to slide with the guide rods.

[0013] The present invention is further configured such that: L-shaped sliding sleeves adapted to the transverse angle steel are symmetrically fixed on the side of the support plate; a first plug and a second plug are respectively fixed on the side of the support plate and the side of the L-shaped sliding sleeve; sleeves that are plugged into and cooperate with the first plug and the second plug are respectively fixed on the side of the two straight plates; the first plug and the second plug are respectively fixedly connected to the corresponding sleeves by fastening bolts.

[0014] The invention is further configured such that: the clamping part includes a U-shaped platform; both ends of the U-shaped platform are fixed with sliding sleeves that slide in cooperation with the corresponding guide rods; a fixing ring is fixed on the side of the U-shaped platform; a stop rod is fixed on the side of the fixing ring; and a first compression spring sleeved on the corresponding guide rod is connected between the side plate and the side of the U-shaped plate and the corresponding sliding sleeve.

[0015] The invention is further configured such that: a coaxial connecting pipe is fixedly inserted through the side plate and the side of the U-shaped plate; a stop is screwed to the end of the connecting pipe; the stop includes a threaded pipe screwed to the connecting pipe; a hollow connecting column is fixed inside the threaded pipe; a plurality of inclined guide blocks are evenly and slidably disposed on the outer wall of the threaded pipe near its end; a second compression spring is connected between the inclined guide block and the hollow connecting column; a connecting rope passing through the hollow connecting column is connected to the bottom surface of the inclined guide block; a pull rope is connected between the ends of each of the connecting ropes; and two pull ropes are connected by a connecting strap.

[0016] The advantages of this invention are: This invention, through the coordinated design of the welding frame, support part, sliding part and clamping part, can complete the coordinated positioning and fixing of vertical angle steel, horizontal steel plate, two diagonal bracing plates and two sets of horizontal angle steel in one go; while the support part moves and clamps the horizontal steel plate, the inclined surface of the guide part and the sliding part automatically drives the diagonal bracing plate to move synchronously and fit tightly, realizing the precise alignment of multiple components in space, which greatly reduces adjustment time and positioning error.

[0017] After welding is completed, the present invention controls the stepper motor to reverse and the support part to move outward. With the cooperation of elastic elements such as the return spring and the first compression spring, each clamping and positioning component automatically resets, realizing rapid separation from the welded workpiece. In particular, the clamping part realizes automatic locking and releasing through the pull rope-slant guide block mechanism, further simplifying the disassembly operation, realizing "one-click" quick disassembly after welding, and improving the recycling efficiency of the tooling. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a quick-release bracket for welding angle steel to transmission line towers according to the present invention.

[0019] Figure 2 For the present invention Figure 1 Enlarged view of region A.

[0020] Figure 3 This is a schematic diagram of the structure of the angle steel clamping state of the present invention.

[0021] Figure 4 For the present invention Figure 3 A structural diagram from a frontal viewpoint.

[0022] Figure 5This is a schematic diagram of the angle steel component in the prior art of the present invention.

[0023] Figure 6 This is a schematic diagram of the welding frame of the present invention.

[0024] Figure 7 This is a schematic diagram of the support portion of the present invention.

[0025] Figure 8 This is a schematic diagram of the sliding part of the present invention.

[0026] Figure 9 This is a schematic diagram of the inclined plate of the present invention.

[0027] Figure 10 This is a schematic diagram of the clamping part of the present invention.

[0028] Figure 11 This is a schematic diagram of the structure of the stop part of the present invention.

[0029] Figure 12 For the present invention Figure 11 A structural diagram from the right-hand perspective.

[0030] In the diagram: 1. Vertical angle steel; 2. Welded frame; 3. Horizontal angle steel; 4. Support part; 5. Horizontal steel plate; 6. Guide part; 7. Diagonal brace plate; 8. Sliding part; 9. Clamping part; 10. Straight plate; 11. Diagonal plate; 12. U-shaped frame; 13. Diagonal baffle plate; 14. Ear plate; 15. Extension rod; 16. Ball head; 17. Return spring; 18. U-shaped plate; 19. Vertical plate; 20. U-shaped seat; 21. Slot; 22. Controller; 23. Two-way lead screw; 24. Slide rod; 25. Pressure plate; 26. Servo motor; 27. 28. Guide rod; 29. ​​Side plate; 30. Bidirectional screw; 31. Stepper motor; 32. Support plate; 33. Ear seat; 34. Screw hole; 35. Guide hole; 36. L-shaped sliding sleeve; 37. First plug; 38. Second plug; 39. Sleeve; 40. U-shaped platform; 41. Sliding sleeve; 42. Fixing ring; 43. Stop bar; 44. First compression spring; 45. Connecting pipe; 46. Stop part; 47. Threaded pipe; 48. Hollow connecting column; 49. Inclined guide block; 50. Second compression spring; 51. Connecting rope; 52. Pull rope. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0033] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0034] Example 1, please refer to Figure 1-12 The present invention provides the following technical solutions: A quick-release bracket for welding angle steel of transmission line towers, specifically comprising a welding frame 2 for inserting vertical angle steel 1; symmetrically slidable support parts 4 for guiding and limiting transverse angle steel 3 on the welding frame 2; two support parts 4 for clamping transverse steel plates 5; guide parts 6 fixedly connected to the support parts 4; symmetrically slidable sliding parts 8 for matching diagonal bracing plates 7 on the welding frame 2; clamping parts 9 symmetrically slidable on the welding frame 2 for clamping both ends of the transverse angle steel 3; guide parts; Part 6 includes a straight plate 10; an inclined plate 11 is fixed to the end of the straight plate 10; the sliding part 8 includes a U-shaped frame 12 that slides with the welding frame 2; an inclined baffle 13 that is adapted to the inclined side of the inclined support plate 7 is fixed to the end of the U-shaped frame 12; ear plates 14 are symmetrically fixed to the two sides of the inclined baffle 13; an extension rod 15 is fixed to the inclined side of the inclined baffle 13; a ball head 16 that is adapted to the inclined plate 11 is fixed to the end of the extension rod 15; a return spring 17 is connected between the U-shaped frame 12 and the welding frame 2.

[0035] Working principle of this embodiment: By inverting the vertical angle steel 1 and inserting it into the welding frame 2, placing the horizontal steel plate 5 vertically on the vertical angle steel 1, and placing the two sets of diagonal bracing plates 7 between the corresponding ear plates 14, the two support parts 4 are controlled to slide and approach synchronously until the horizontal steel plate 5 is clamped. During this process, the two diagonal plates 11 press the corresponding ball head 16 during the movement, causing the two U-shaped frames 12 to slide and approach, thereby causing the two diagonal bracing plates 7 to move towards the horizontal steel plate 5 until they are close to the side of the horizontal steel plate 5. This achieves synchronous positioning and clamping of the vertical angle steel 1, the two diagonal bracing plates 7, and the horizontal steel plate 5, thus improving the efficiency of angle steel welding.

[0036] Example 2, please refer to Figure 1-12 This embodiment 2 is an improvement on the first embodiment as follows: Specifically, the welding frame 2 includes a U-shaped plate 18; vertical plates 19 are fixed at both ends of the U-shaped plate 18; a U-shaped seat 20 is fixed at the bottom of the vertical plate 19; a slot 21 is provided on the side of the U-shaped seat 20 to engage with the vertical angle steel 1; and a controller 22 is fixed on the side of the U-shaped plate 18.

[0037] A bidirectional lead screw 23 is rotatably mounted between the two U-shaped seats 20; slide rods 24 are symmetrically fixed on both sides of the bidirectional lead screw 23 between the two U-shaped seats 20; pressure plates 25 are symmetrically slidably mounted between the two slide rods 24 and are threadedly engaged with the bidirectional lead screw 23; a servo motor 26 is fixedly mounted on the side of one U-shaped seat 20 and electrically connected to the output end of the controller 22; the output end of the servo motor 26 is fixedly connected to one end of the bidirectional lead screw 23.

[0038] A guide rod 27 is symmetrically fixed to the side of the U-shaped plate 18; a side plate 28 is fixed between the ends of the two guide rods 27; a bidirectional screw 29 is rotatably disposed between the side plate 28 and the U-shaped plate 18; a stepper motor 30 is fixed to the side of the U-shaped plate 18 and electrically connected to the output end of the controller 22; the output end of the stepper motor 30 is electrically connected to the bidirectional screw 29; the support part 4 includes a support plate 31; an ear seat 32 is fixed to the side of the support plate 31; a screw hole 33 is opened on the side of the ear seat 32 to rotate with the thread of the bidirectional screw 29, and a guide hole 34 is symmetrically opened on its side to slide with the guide rod 27.

[0039] The support plate 31 is symmetrically fixed with L-shaped sliding sleeves 35 that are compatible with the transverse angle steel 3; the support plate 31 and the L-shaped sliding sleeves 35 are respectively fixed with a first plug 36 and a second plug 37; the two straight plates 10 are respectively fixed with sleeves 38 that are plugged into the first plug 36 and the second plug 37; the first plug 36 and the second plug 37 are respectively fixedly connected to the corresponding sleeves 38 by fastening bolts.

[0040] The clamping part 9 includes a U-shaped platform 39; both ends of the U-shaped platform 39 are fixed with sliding sleeves 40 that slide in cooperation with the corresponding guide rods 27; a fixing ring 41 is fixed on the side of the U-shaped platform 39; a stop bar 42 is fixed on the side of the fixing ring 41; a first compression spring 43 sleeved on the corresponding guide rod 27 is connected between the side of the side plate 28 and the side of the U-shaped plate 18 and the corresponding sliding sleeve 40, respectively.

[0041] Both the side plate 28 and the U-shaped plate 18 have coaxial connecting pipes 44 fixed through them; the end of the connecting pipe 44 is screwed with a stop part 45; the stop part 45 includes a threaded pipe 46 screwed to the connecting pipe 44; a hollow connecting column 47 is fixed inside the threaded pipe 46; several inclined guide blocks 48 are evenly and slidably arranged on the outer wall of the threaded pipe 46 near its end; a second compression spring 49 is connected between the inclined guide block 48 and the hollow connecting column 47; a connecting rope 50 passing through the hollow connecting column 47 is connected to the bottom surface of the inclined guide block 48; a pull rope 51 is connected between the ends of each connecting rope 50; and the two pull ropes 51 are connected by a connecting strap.

[0042] Working principle of this embodiment two: The vertical angle steel 1 is inverted and inserted into the corresponding slot 21. The servo motor 26 is started to drive the bidirectional lead screw 23 to rotate, thereby driving the two pressure plates 25 to slide and approach synchronously along the slide bar 24, so as to realize the automatic positioning and clamping of the vertical angle steel 1.

[0043] The horizontal steel plate 5 is placed vertically on the vertical angle steel 1. The two sets of diagonal bracing plates 7 are placed between the corresponding ear plates 14. The stepper motor 30 is started to drive the bidirectional screw 29 to rotate, thereby causing the two support parts 4 to slide closer along the guide rod 27. During this process, the ball heads 16 on the two sets of sliding parts 8 are squeezed by the corresponding inclined plates 11, causing the two sets of ball heads 16 to slide closer synchronously, thereby causing the U-shaped frames 12 on the corresponding sliding parts 8 to slide closer to each other. The corresponding return spring 17 is compressed. During this process... The two sets of diagonal bracing plates 7 slide closer together. When the sliding part 8 moves the diagonal bracing plates 7 to be close to the transverse steel plate 5, the ball head 16 is placed on the side of the straight plate 10. As the two support parts 4 continue to slide closer together, the straight plate 10 slides on the ball head 16. The sliding part 8 will not move. When the two L-shaped sliding sleeves 35 on the two support parts 4 have finished clamping the transverse steel plate 5, the stepper motor 30 is controlled to stop, realizing the synchronous positioning and clamping of the vertical angle steel 1, the two diagonal bracing plates 7 and the transverse steel plate 5, which improves the efficiency of angle steel welding.

[0044] Insert the two transverse angle steels 3 into the corresponding L-shaped sliding sleeves 35, pull the connecting belt, thereby pulling the two pull ropes 51 to tighten the corresponding connecting ropes 50, so that each set of inclined guide blocks 48 slides into the threaded tube 46, the corresponding second compression spring 49 is compressed, releasing the restriction on the fixing ring 41 on the clamping part 9, and under the elastic reset action of the first compression spring 43, drive the clamping part 9 to move towards the end of the transverse angle steel 3, so that the two sets of stop bars 42 complete the clamping of the transverse angle steel 3.

[0045] Subsequently, the longitudinal angle steel 1 is welded to the corresponding joints to be welded by the diagonal brace plate 7 and the transverse steel plate 5 using a laser welding device set on the welding frame 2. Then, the two transverse angle steels 3 are welded to the corresponding joints to be welded by the transverse steel plate 5.

[0046] After welding is completed, the stepper motor 30 is started to drive the bidirectional screw 29 to rotate in the opposite direction, thereby causing the two support parts 4 to slide away along the guide rod 27. During the sliding reset process of the corresponding support parts 4, the corresponding stop rod 42 is pressed, causing the clamping part 9 to move away from the transverse angle steel 3, completing the separation of the two sets of support parts 4 from the transverse angle steel 3. The corresponding first compression spring 43 is compressed. When the threaded tube 46 is inserted into the fixing ring 41, each set of inclined guide blocks 48 is compressed and slid into the inside of the threaded tube 46. The corresponding second compression spring 49 is compressed. When the fixing ring 41 slides away from the inclined guide blocks 48, under the elastic reset action of the second compression spring 49, each set of inclined guide blocks 48 slides out. Under the elastic action of the first compression spring 43, the fixing ring 41 is pressed against the side of the inclined guide blocks 48, completing the limitation of the stop part 45. During the above process, under the elastic reset action of the reset spring 17, the sliding part 8 is driven to move and reset away from the transverse steel plate 5.

[0047] In short, after welding is completed, by controlling the stepper motor 30 to reverse, the support part 4 moves outward. With the cooperation of elastic elements such as the return spring 17 and the first compression spring 43, each clamping and positioning component automatically resets, achieving rapid disengagement from the welded workpiece. In particular, the clamping part 9 achieves automatic locking and releasing through the pull rope-slant guide block mechanism, further simplifying the disassembly operation and realizing "one-click" quick disassembly after welding, thus improving the recycling efficiency of the tooling.

[0048] In summary, the use of motor drives (servo motor 26 and stepper motor 30) to rotate the bidirectional lead screw 23 and bidirectional screw 29 automatically clamps and releases the pressure plate 25, support part 4, and other actuators. This method is simple to operate and responds quickly. All visible weld seams can be welded in a single setup, avoiding repeated positioning, significantly improving the continuity and efficiency of welding operations, ensuring the consistency and reliability of weld joint quality, reducing the labor intensity and technical threshold for operators, and facilitating the standardization and large-scale application of welding processes.

[0049] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0053] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A transmission line tower angle steel welding quick-release bracket, characterized in that: The utility model provides a welding frame (2) for splicing vertical angle steel (1), the support (4) for guiding and limiting of horizontal angle steel (3) is symmetrically arranged on the welding frame (2) and slides, two support (4) are used for clamping horizontal steel plate (5), the guide portion (6) is fixedly connected on the support (4), the sliding portion (8) for the matching of inclined bracing plate (7) is symmetrically arranged on the welding frame (2) and slides, the clamping portion (9) for clamping both ends of horizontal angle steel (3) is symmetrically arranged on the welding frame (2) and slides, The guide portion (6) includes a straight plate (10), the straight plate (10) is fixed with an inclined plate (11) at the end, the sliding portion (8) includes a U-shaped frame (12) that is slidably connected with the welding frame (2), the U-shaped frame (12) is fixed with an inclined baffle (13) at the end, the inclined baffle (13) is symmetrically fixed with an ear plate (14) on the opposite sides, the inclined baffle (13) is fixed with an extension rod (15) on the inclined side, the extension rod (15) is fixed with a ball head (16) at the end, the ball head (16) is matched with the inclined plate (11), the U-shaped frame (12) is connected with the welding frame (2) through a return spring (17).

2. The transmission line tower angle steel welding quick-release bracket according to claim 1, characterized in that: The welding frame (2) includes a U-shaped plate (18), the U-shaped plate (18) is fixed with a vertical plate (19) at both ends, the vertical plate (19) is fixed with a U-shaped seat (20) at the bottom, the U-shaped seat (20) is provided with an insertion slot (21) on the side, the insertion slot (21) is matched with the vertical angle steel (1), the U-shaped plate (18) is fixed with a controller (22) on the side.

3. The transmission line tower angle steel welding quick-release bracket according to claim 2, characterized in that: A bidirectional screw rod (23) is rotatably arranged between the two U-shaped seats (20), a slide rod (24) is symmetrically fixed between the two U-shaped seats (20) on both sides of the bidirectional screw rod (23), a pressing plate (25) is symmetrically slidably arranged between the two slide rods (24) and threadedly rotatably matched with the bidirectional screw rod (23), a servo motor (26) is fixedly installed on one side of the U-shaped seat (20) and electrically connected with the output end of the controller (22), and the output end of the servo motor (26) is fixedly connected with one end of the bidirectional screw rod (23).

4. The transmission line tower angle steel welding quick-release bracket according to claim 3, characterized in that: A guide rod (27) is symmetrically fixed on the side of the U-shaped plate (18), a side plate (28) is fixed between the ends of the two guide rods (27), a bidirectional screw rod (29) is rotatably arranged between the U-shaped plate (18) and the side plate (28), a stepping motor (30) is fixed on the side of the U-shaped plate (18) and electrically connected with the output end of the controller (22), and the output end of the stepping motor (30) is electrically connected with the bidirectional screw rod (29). The support portion (4) includes a support plate (31), the support plate (31) is fixed with an ear seat (32) on the side, the ear seat (32) is provided with a screw hole (33) that is threadedly rotatably matched with the bidirectional screw rod (29) on the side, and the side is symmetrically provided with a guide hole (34) that is slidably matched with the guide rod (27).

5. The transmission line tower angle steel welding quick-release bracket according to claim 4, characterized in that: The support plate (31) is fixed with L-shaped sliding sleeve (35) which is matched with the transverse angle steel (3) on the side surface; the support plate (31) and the L-shaped sliding sleeve (35) are respectively fixed with the first plug (36) and the second plug (37) on the side surface; the two straight plates (10) are respectively fixed with the sleeve (38) which is matched with the first plug (36) and the second plug (37) on the side surface; the first plug (36) and the second plug (37) are respectively fixed with the corresponding sleeve (38) through the fastening bolt.

6. The transmission line tower angle steel welding quick-release bracket according to claim 5, characterized in that: The clamping part (9) includes U-shaped table (39); the U-shaped table (39) is fixed with the sliding sleeve (40) which is matched with the corresponding guide rod (27) on both ends; the U-shaped table (39) is fixed with the fixed ring (41) on the side surface; the fixed ring (41) is fixed with the stop rod (42) on the side surface; the side plate (28) and the U-shaped plate (18) are respectively connected with the corresponding sliding sleeve (40) through the first extrusion spring (43) which is sleeved on the corresponding guide rod (27).

7. The transmission line tower angle steel welding quick-release bracket according to claim 6, characterized in that: The side plate (28) and the U-shaped plate (18) are fixed with the coaxial connecting pipe (44) on the side surface; the connecting pipe (44) is screwed with the stop part (45); the stop part (45) includes the threaded pipe (46) which is screwed with the connecting pipe (44); the threaded pipe (46) is fixed with the hollow connecting column (47) inside; the threaded pipe (46) is uniformly provided with the inclined guide block (48) which is slidably arranged on the outer wall near the end; the inclined guide block (48) and the hollow connecting column (47) are connected with the second extrusion spring (49); the inclined guide block (48) is connected with the connecting rope (50) which passes through the hollow connecting column (47); the connecting ropes (50) are connected with the pull rope (51) between the ends; the two pull ropes (51) are connected through the connecting belt.

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