Electric power iron tower steel structure welding fixing tool

Abstract

The invention relates to the technical field of electric iron tower steel structure welding, and provides an electric iron tower steel structure welding fixing tool which comprises a base and a supporting seat, and the supporting seat is fixed to one side of the top end of the base. By arranging the clamping mechanism, when a second electric push rod drives a movable seat to stretch out and draw back, the stability of the movable seat during movement is enhanced under the action of a fixed rod, the clamping seat is pushed to be unfolded under the action of the movable seat, and the stability of the clamping seat during movement is enhanced under the action of a sliding seat; the moved clamping seat can drive the rubber seat to abut against the inner side of the connecting flange, so that the connecting flange is conveniently fixed, and under the action of the multiple sets of moving seats, external force can be better shared and resisted, so that higher rigidity and damping are provided, and vibration and flutter are effectively restrained; under the action of the rubber seat, the friction force between the clamping seat and the connecting flange is increased, meanwhile, the clamping force is further buffered, and stable and damage-free clamping of the steel structure is achieved.

Description

Technical Field

[0001] This invention relates to the field of welding technology for steel structures of power transmission towers, and particularly to a welding fixture for steel structures of power transmission towers. Background Technology

[0002] Power transmission tower steel structures refer to tower structures made primarily of steel, processed and connected to support power transmission lines. They are critical infrastructure in power transmission systems. During the welding process of power transmission tower steel structures, in order to weld steel pipes and connecting flanges together, fixing fixtures are needed to secure the steel pipes and connecting flanges. Therefore, a type of welding fixing fixture for power transmission tower steel structures is used. To this end, patent CN119328404A discloses a welding and fixing fixture for steel tower structures, including a support base and a triangular steel. A main fixing plate is fixedly connected to the upper surface of the support base, and a secondary moving plate is slidably connected inside the support base. A first rotating plate is rotatably connected inside the main fixing plate, and a second rotating plate is rotatably connected inside the secondary moving plate. A flipping mechanism and a telescopic adjustment mechanism are fixedly connected to the upper surface of the support base. A first clamping and fixing mechanism is provided inside the first rotating plate, and a second clamping and fixing mechanism is provided inside the second rotating plate. The first and second clamping and fixing mechanisms are used to fix the triangular steel. A motor drives a power trapezoidal gear to rotate, which in turn rotates the first trapezoidal gear and the threaded telescopic rod, thereby causing the push plate and the second triangular top block to rise or fall, thereby adjusting the size of the other end diameter of the triangular steel. Although the aforementioned steel tower welding fixture uses a motor to drive a power trapezoidal gear to rotate the first trapezoidal gear and the threaded telescopic rod, thereby raising or lowering the push plate and the second triangular top block to adjust the diameter of the other end of the triangular steel, this device has poor stability during use because its fixation is not stable enough and it is inconvenient to effectively suppress vibration and flutter. Summary of the Invention

[0003] The purpose of this invention is to provide a welding and fixing fixture for the steel structure of power transmission towers, which solves the defects of existing welding and fixing fixtures for the steel structure of power transmission towers that are not stable enough and do not effectively suppress vibration and flutter.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a welding and fixing fixture for steel structures of power transmission towers, comprising a base and a support; A support base is fixed to one side of the top of the base, a flipping structure is provided on the top of the support base, and a clamping mechanism is fixed to one side of the flipping structure; The clamping mechanism includes a connecting frame fixed to one side of the flipping structure. A fixed frame is fixed to one side of the connecting frame. A second electric push rod is fixed to one side inside the connecting frame. A movable seat passes through one side inside the fixed frame. Clamping seats are evenly arranged on the outer side of one end of the movable seat. A slide is fixed to one end of each clamping seat. A first movable rod is fixed to the outer side of one end of each clamping seat. A rubber seat is fixed to the outer side of the other end of each clamping seat. A support structure is fixed to the top of the base.

[0005] Preferably, the flipping structure includes a drive motor, an internal cavity, a driven gear, a drive gear, a connecting shaft, a limiting groove, a turntable, a limiting rod, and a first electric push rod. The internal cavity is located at the top of the support base, and the driven gear is located at the bottom of the internal cavity. The top of the driven gear is meshed with the drive gear. The drive motor is mounted on the outer wall of the support base on one side of the drive gear. A connecting shaft is fixed on one side of the driven gear. One end of the connecting shaft extends to the outside of the support base and is fixed to the turntable. Limiting grooves are evenly distributed on the outer side of the turntable. The first electric push rod passes through the bottom of the support base, and a limiting rod is fixed at one end of the first electric push rod. When the drive gear rotates inside the internal cavity, the drive gear and the driven gear mesh, and the drive gear drives the connecting shaft to rotate through the driven gear. This causes the connecting shaft to drive the connecting frame to rotate through the turntable, thereby causing the clamping base to flip the steel structure, thus improving welding efficiency.

[0006] Preferably, the output end of the drive motor extends into the interior of the built-in cavity and is fixedly connected to one side of the drive gear. One side of the turntable is fixedly connected to one side of the connecting frame. The limiting rod and the turntable form a sliding structure through the limiting groove. When the turntable rotates to the target angle, the first electric push rod drives the limiting rod to extend and retract. When the limiting rod moves into the interior of the limiting groove, the turntable can be locked under the action of the limiting rod to prevent the steel structure from rotating.

[0007] Preferably, a first return spring is sleeved on the outer side of the first movable rod, and movable plates are fixed on both sides of the movable seat away from the clamping seat. A fixed rod passes through the interior of each movable plate, and a slide rail passes through one side of the interior of the slide seat.

[0008] Preferably, one end of the second electric push rod is fixedly connected to one end of the movable seat, and the movable seat and the fixed frame constitute a sliding structure.

[0009] Preferably, the fixed rod and the movable plate form a sliding structure. One end of the fixed rod is fixedly connected to the inner wall of the connecting frame, and the other end of the fixed rod is fixedly connected to one side of the fixed frame. When the second electric push rod drives the movable seat to extend or retract, the fixed rod enhances the stability of the movable seat during movement. The movable seat also pushes the clamping seat to unfold, and the sliding seat further enhances the stability of the clamping seat during movement. After movement, the clamping seat causes the rubber seat to abut against the inner side of the connecting flange, thus facilitating the fixing of the connecting flange. With the action of multiple movable seats, external forces can be better distributed and resisted, thereby providing higher rigidity and damping, and effectively suppressing vibration and flutter.

[0010] Preferably, one end of the first movable rod extends to the outside of the fixed frame and is fixed with a stop block. The first movable rod and the fixed frame form a sliding structure. The clamping seat and the first movable rod form a telescopic structure through a first return spring. The slide seat and the slide rail form a sliding structure. One side of the slide rail is fixedly connected to the inner wall of the fixed frame. Under the action of the rubber seat, the friction between the clamping seat and the connecting flange is increased, and the clamping force is further buffered, achieving stable and damage-free clamping of the steel structure.

[0011] Preferably, the support structure includes a fixed frame, a support frame, a second movable rod, a second return spring, a first movable plate, a first support roller, a second support roller, a third electric push rod, a guide rod, and a second movable plate. The fixed frame is fixed to the top of the base. The top of the fixed frame is through which the third electric push rod passes. The top of the third electric push rod is fixed to the second movable plate. The top two sides of the top of the second movable plate are fixed with second support rollers. The interiors of the fixed frames on both sides of the third electric push rod are through guide rods. The top of the fixed frame is fixed to one side of the support frame. The top of the support frame is evenly through which the second movable rod passes. The bottom of the second movable rod is fixed to the first movable plate. The bottom two sides of the first movable plate are fixed with first support rollers. The outer side of the second movable rod at the top of the first movable plate is fitted with a second return spring.

[0012] Preferably, the second movable rod and the support frame form a sliding structure, and a baffle is fixed to the top of the second movable rod. The first movable plate and the second movable rod form a telescopic structure through the second return spring. When the third electric push rod drives the second movable plate to extend or retract, the stability of the second movable plate during movement is enhanced under the action of the guide rod. After moving, the second movable plate will drive the steel pipe to rise and fall through the second support roller. Under the squeezing action of the steel pipe, the second movable rod will move inside the support frame. At this time, the second return spring is compressed, thereby adjusting the height between the first support roller and the second support roller to adapt to the support requirements of steel pipes of different sizes, and at the same time, making the centerline of the steel pipe collinear with the centerline of the connecting flange.

[0013] Preferably, the guide rod and the fixed frame are configured as a sliding structure, and the top end of the guide rod is fixedly connected to the bottom end of the second movable plate. When the steel pipe rotates, the first support roller and the second support roller can rotate with the steel pipe, which can reduce friction.

[0014] The present invention provides a welding and fixing fixture for the steel structure of power transmission towers, which has the following advantages: By incorporating a clamping mechanism, when the second electric push rod drives the movable seat to extend or retract, the stability of the movable seat during movement is enhanced by the action of the fixed rod. The movable seat then pushes the clamping seat to unfold, further enhancing its stability during movement through the sliding block. After movement, the clamping seat causes the rubber seat to contact the inner side of the connecting flange, facilitating flange fixation. The combined action of multiple movable seats better distributes and resists external forces, providing higher rigidity and damping, effectively suppressing vibration and flutter. Furthermore, the rubber seat increases the friction between the clamping seat and the connecting flange, while also further buffering the clamping force, thus achieving stable and damage-free clamping of the steel structure. By incorporating a flipping structure, when the driving gear rotates inside the built-in cavity, it meshes with the driven gear. The driving gear then drives the connecting shaft to rotate via the driven gear, which in turn drives the connecting frame to rotate via the turntable. This, in turn, causes the clamping seat to flip the steel structure, thereby improving welding efficiency. Furthermore, once the turntable reaches the target angle, the first electric push rod drives the limit rod to extend and retract. When the limit rod moves into the interior of the limit groove, it locks the turntable, preventing the steel structure from rotating. With a supporting structure, when the third electric push rod drives the second movable plate to extend or retract, the stability of the second movable plate during movement is enhanced under the action of the guide rod. After moving, the second movable plate will drive the steel pipe to rise and fall through the second support roller. Under the squeezing action of the steel pipe, the second movable rod will move inside the support frame. At this time, the second return spring is compressed, thereby adjusting the height between the first support roller and the second support roller to adapt to the support requirements of steel pipes of different sizes. At the same time, it can make the centerline of the steel pipe collinear with the centerline of the connecting flange. Furthermore, when the steel pipe rotates, the first and second support rollers can rotate with the steel pipe, which can reduce friction. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the front cross-section of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the support structure of the present invention, shown in the front cross-sectional view. Figure 4 This is a side cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the front cross-section of the flipping structure of the present invention; Figure 6 This is a three-dimensional structural schematic diagram of the flipping structure of the present invention, viewed from the side. Figure 7 This is a top-view cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 8 This is a three-dimensional structural schematic diagram of the clamping mechanism of the present invention, viewed from the front cross-section. Figure 9 This is a side cross-sectional three-dimensional structural schematic diagram of the clamping mechanism of the present invention; Figure 10 This is a three-dimensional exploded view of the clamping mechanism of the present invention.

[0016] The reference numerals in the figure are as follows: 1. Base; 2. Support seat; 3. Flipping structure; 31. Drive motor; 32. Internal cavity; 33. Driven gear; 34. Drive gear; 35. Connecting shaft; 36. Limiting groove; 37. Turntable; 38. Limiting rod; 39. First electric push rod; 4. Clamping mechanism; 41. Connecting frame; 42. Fixed frame; 43. Moving seat; 44. Second electric push rod; 45. Fixed rod; 46. Moving plate; 47. First movable rod; 48. First return spring; 49. Clamping seat; 410. Rubber seat; 411. Slide seat; 412. Slide rail; 5. Support structure; 51. Fixed frame; 52. Support frame; 53. Second movable rod; 54. Second return spring; 55. First movable plate; 56. First support roller; 57. Second support roller; 58. Third electric push rod; 59. Guide rod; 510. Second movable plate. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-10This invention provides a welding and fixing fixture for the steel structure of a power transmission tower, comprising a base 1 and a support 2. The support 2 is fixed to one side of the top of the base 1. A flipping structure 3 is provided on the top of the support 2. The flipping structure 3 includes a drive motor 31, an internal cavity 32, a driven gear 33, a driving gear 34, a connecting shaft 35, a limiting groove 36, a turntable 37, a limiting rod 38, and a first electric push rod 39. The internal cavity 32 is located on the top of the support 2. The driven gear 33 is located at the bottom of the internal cavity 32. The top of the driven gear 33 is meshed with the driving gear 34. The support 34 is located on one side of the driving gear 34. A drive motor 31 is installed on the outer wall of the support 2. A connecting shaft 35 is fixed to one side of the driven gear 33. One end of the connecting shaft 35 extends to the outside of the support 2 and is fixed to a turntable 37. Limiting grooves 36 are evenly opened on the outer side of the turntable 37. A first electric push rod 39 passes through the bottom of the support 2. A limiting rod 38 is fixed to one end of the first electric push rod 39. The output end of the drive motor 31 extends into the interior of the internal cavity 32 and is fixedly connected to one side of the drive gear 34. One side of the turntable 37 is fixedly connected to one side of the connecting frame 41. The limiting rod 38 and the turntable 37 form a sliding structure through the limiting groove 36.

[0019] Reference Figure 2 , Figure 5 and Figure 6 As shown, the drive motor 31 is started, causing the drive gear 34 to rotate inside the built-in cavity 32. Through the meshing connection between the drive gear 34 and the driven gear 33, the drive gear 34 drives the connecting shaft 35 to rotate, which in turn drives the connecting frame 41 to rotate through the turntable 37. This causes the clamping seat 49 to rotate the steel structure, thereby improving welding efficiency. When the turntable 37 rotates to the target angle, the first electric push rod 39 is started, causing the first electric push rod 39 to extend and retract the limiting rod 38. When the limiting rod 38 moves into the limiting groove 36, the turntable 37 can be locked under the action of the limiting rod 38 to prevent the steel structure from rotating.

[0020] A clamping mechanism 4 is fixed to one side of the flipping structure 3. The clamping mechanism 4 includes a connecting frame 41 fixed to one side of the flipping structure 3. A fixing frame 42 is fixed to one side of the connecting frame 41. A second electric push rod 44 is fixed to one side inside the connecting frame 41. A movable seat 43 passes through one side inside the fixing frame 42. Clamping seats 49 are evenly arranged on the outer side of one end of the movable seat 43. A slide seat 411 is fixed to one end of each clamping seat 49. A first movable rod 47 is fixed to the outer side of one end of each clamping seat 49. A rubber seat 410 is fixed to the outer side of the other end of each clamping seat 49. A first return spring 48 is sleeved on the outer side of each first movable rod 47. Movable plates 46 are fixed to both sides of the movable seat 43 away from the clamping seats 49. A fixing rod passes through the interior of each movable plate 46. 45. A slide rail 412 runs through one side of the interior of the slide block 411. One end of the second electric push rod 44 is fixedly connected to one end of the movable seat 43. The movable seat 43 and the fixed frame 42 form a sliding structure. The fixed rod 45 and the movable plate 46 form a sliding structure. One end of the fixed rod 45 is fixedly connected to the inner wall of the connecting frame 41. The other end of the fixed rod 45 is fixedly connected to one side of the fixed frame 42. One end of the first movable rod 47 extends to the outside of the fixed frame 42 and is fixed with a stop. The first movable rod 47 and the fixed frame 42 form a sliding structure. The clamping seat 49 and the first movable rod 47 form a telescopic structure through the first return spring 48. The slide block 411 and the slide rail 412 form a sliding structure. One side of the slide rail 412 is fixedly connected to the inner wall of the fixed frame 42.

[0021] Reference Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, activating the second electric push rod 44 causes the movable seat 43 to extend and retract. The movable seat 43 then moves the movable plate 46 outside the fixed rod 45. Under the action of the fixed rod 45, the stability of the movable seat 43 during movement is enhanced. Under the action of the movable seat 43, the clamping seat 49 is pushed to unfold. The clamping seat 49 then moves the slide 411 to one side of the slide rail 412. At this time, the first return spring 48 is compressed. Under the action of the slide 411, the stability of the clamping seat 49 during movement is enhanced. The clamping seat after movement... 49 will cause the rubber seat 410 to come into contact with the inner side of the connecting flange, thereby facilitating the fixing of the connecting flange. Under the action of multiple sets of moving seats 43, the external force can be better distributed and resisted, thereby providing higher rigidity and damping, effectively suppressing vibration and flutter. Under the action of the rubber seat 410, the friction between the clamping seat 49 and the connecting flange is increased, and the clamping force is further buffered, so as to achieve stable and damage-free clamping of the steel structure. When the moving seat 43 returns to its original position, under the elastic force of the first return spring 48, the clamping seat 49 can be pushed back to its original position.

[0022] A support structure 5 is fixed to the top of the base 1. The support structure 5 includes a fixed frame 51, a support frame 52, a second movable rod 53, a second return spring 54, a first movable plate 55, a first support roller 56, a second support roller 57, a third electric push rod 58, a guide rod 59, and a second movable plate 510. The fixed frame 51 is fixed to the top of the base 1. The third electric push rod 58 passes through the top of the fixed frame 51. The second movable plate 510 is fixed to the top of the third electric push rod 58. The second support rollers 57 are fixed to both sides of the top of the second movable plate 510. The guide rods 59 pass through the interior of the fixed frame 51 on both sides of the third electric push rod 58. The second movable plate 510 is fixed to the top of the fixed frame 51 on one side. A support frame 52 is fixed, and a second movable rod 53 is evenly inserted through one side of the top of the support frame 52. A first movable plate 55 is fixed to the bottom of each of the second movable rods 53. A first support roller 56 is fixed to both sides of the bottom of the first movable plate 55. A second return spring 54 is sleeved on the outer side of the second movable rod 53 at the top of the first movable plate 55. The second movable rod 53 and the support frame 52 form a sliding structure. A baffle is fixed to the top of the second movable rod 53. The first movable plate 55 and the second movable rod 53 form a telescopic structure through the second return spring 54. A guide rod 59 and a fixed frame 51 form a sliding structure. The top of the guide rod 59 is fixedly connected to the bottom of the second movable plate 510.

[0023] Reference Figure 2 , Figure 3 and Figure 4 As shown, the third electric push rod 58 is activated, causing the second movable plate 510 to extend and retract. The second movable plate 510 drives the guide rod 59 to move inside the fixed frame 51. Under the action of the guide rod 59, the stability of the second movable plate 510 during movement is enhanced. After moving, the second movable plate 510 will drive the steel pipe to rise and fall through the second support roller 57. Under the squeezing action of the steel pipe, the second movable rod 53 will move inside the support frame 52. At this time, the second return spring 54 is compressed, thereby adjusting the height between the first support roller 56 and the second support roller 57 to adapt to the support requirements of steel pipes of different sizes. At the same time, it can make the centerline of the steel pipe collinear with the centerline of the connecting flange. When the steel pipe rotates, the first support roller 56 and the second support roller 57 can rotate with the steel pipe, which can reduce friction. When the second support roller 57 drives the steel pipe to descend, under the elastic force of the second return spring 54, the first movable plate 55 can push the first support roller 56 back to its original position.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding and fixing fixture for the steel structure of a power transmission tower, comprising a base (1) and a support base (2); Its features : A support base (2) is fixed to one side of the top of the base (1), a flipping structure (3) is provided on the top of the support base (2), and a clamping mechanism (4) is fixed to one side of the flipping structure (3); The clamping mechanism (4) includes a connecting frame (41) fixed to one side of the flipping structure (3), a fixed frame (42) fixed to one side of the connecting frame (41), a second electric push rod (44) fixed to one side inside the connecting frame (41), a movable seat (43) penetrating one side inside the fixed frame (42), clamping seats (49) evenly arranged on the outer side of one end of the movable seat (43), a slide seat (411) fixed to one end of each clamping seat (49), a first movable rod (47) fixed to the outer side of one end of each clamping seat (49), and a rubber seat (410) fixed to the outer side of the other end of each clamping seat (49). The top of the base (1) is fixed with a support structure (5).

2. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 1, characterized in that... The flipping structure (3) includes a drive motor (31), an internal cavity (32), a driven gear (33), a driving gear (34), a connecting shaft (35), a limiting groove (36), a turntable (37), a limiting rod (38), and a first electric push rod (39). The internal cavity (32) is located at the top of the support base (2). The driven gear (33) is located at the bottom of the internal cavity (32). The driving gear (34) is meshed with the top of the driven gear (33). A drive motor (31) is installed on the outer wall of the support base (2) on one side of the driven gear (34). A connecting shaft (35) is fixed on one side of the driven gear (33). One end of the connecting shaft (35) extends to the outside of the support base (2) and is fixed with a turntable (37). Limiting grooves (36) are evenly opened on the outer side of the turntable (37). A first electric push rod (39) passes through the bottom of the support base (2). A limiting rod (38) is fixed at one end of the first electric push rod (39).

3. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 2, characterized in that... The output end of the drive motor (31) extends into the interior of the built-in cavity (32) and is fixedly connected to one side of the drive gear (34). One side of the turntable (37) is fixedly connected to one side of the connecting frame (41). The limiting rod (38) and the turntable (37) form a sliding structure through the limiting groove (36).

4. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 1, characterized in that... The first movable rod (47) is fitted with a first return spring (48) on the outside. The movable seat (43) is fixed with movable plates (46) on both sides away from the clamping seat (49). The movable plates (46) are all fitted with fixed rods (45) inside. The slide rail (412) is fitted through one side inside the slide seat (411).

5. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 4, characterized in that... One end of the second electric push rod (44) is fixedly connected to one end of the movable seat (43), and the movable seat (43) and the fixed frame (42) constitute a sliding structure.

6. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 4, characterized in that... The fixed rod (45) and the movable plate (46) form a sliding structure. One end of the fixed rod (45) is fixedly connected to the inner wall of the connecting frame (41), and the other end of the fixed rod (45) is fixedly connected to one side of the fixed frame (42).

7. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 4, characterized in that... One end of the first movable rod (47) extends to the outside of the fixed frame (42) and is fixed with a stop. The first movable rod (47) and the fixed frame (42) form a sliding structure. The clamping seat (49) and the first movable rod (47) form a telescopic structure through the first return spring (48). The slide seat (411) and the slide rail (412) form a sliding structure. One side of the slide rail (412) is fixedly connected to the inner wall of the fixed frame (42).

8. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 1, characterized in that... The support structure (5) includes a fixed frame (51), a support frame (52), a second movable rod (53), a second return spring (54), a first movable plate (55), a first support roller (56), a second support roller (57), a third electric push rod (58), a guide rod (59), and a second movable plate (510). The fixed frame (51) is fixed to the top of the base (1). The top of the fixed frame (51) is through which the third electric push rod (58) passes. The top of the third electric push rod (58) is fixed to the second movable plate (510). The top sides of the second movable plate (510) are... Each of the three electric push rods (58) is fixed with a second support roller (57). The interior of the fixing frame (51) on both sides of the third electric push rod (58) is penetrated by a guide rod (59). A support frame (52) is fixed on one side of the top of the fixing frame (51). A second movable rod (53) is evenly penetrated on one side of the top of the support frame (52). A first movable plate (55) is fixed at the bottom of the second movable rod (53). A first support roller (56) is fixed on both sides of the bottom of the first movable plate (55). A second return spring (54) is sleeved on the outside of the second movable rod (53) at the top of the first movable plate (55).

9. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 8, characterized in that... The second movable rod (53) and the support frame (52) form a sliding structure. A baffle is fixed at the top of the second movable rod (53). The first movable plate (55) and the second movable rod (53) form a telescopic structure through the second return spring (54).

10. The welding and fixing fixture for the steel structure of a power transmission tower according to claim 8, characterized in that... The guide rod (59) and the fixing frame (51) form a sliding structure, and the top end of the guide rod (59) is fixedly connected to the bottom end of the second movable plate (510).

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