Special welding fixture for angle steel tower foot of power transmission tower

Abstract

The utility model belongs to the technical field of angle steel tower foot welding, and particularly relates to a special welding fixture for angle steel tower feet of a power transmission tower, which comprises a workbench and support columns fixedly connected to four corners of the lower side of the workbench. When the special welding clamp for the angle steel tower foot of the power transmission tower is used, one corner of each steel plate needed for welding the angle steel tower foot of the power transmission tower is moved to the inner side of a clamping frame, then a second handle is rotated to drive a second threaded rod to rotate, meanwhile, a pressing plate is moved backwards to the front side of the steel plate, and the steel plate is fixed into the clamping frame; then the sliding blocks slide along the outer sides of the guide rails to drive the clamped steel plates to move to be arranged at the upper end of the workbench in an equal-radian mode, then the first handles are rotated to drive the first threaded rods to rotate and move downwards to make contact with the upper sides of the guide rails at the same time, the sliding blocks are fixed to the outer sides of the guide rails, and then the contact positions of the steel plates are welded.

Description

Technical Field

[0001] The utility model relates to the technical field of angle steel tower foot welding, in particular to a special welding fixture for the angle steel tower foot of a power transmission iron tower. Background Art

[0002] At present, in the process of processing angle steel towers for power transmission lines, the tower foot is the only component that requires multiple parts to be assembled together through welding. The welding efficiency directly affects the progress of the project.

[0003] However, due to the small batch size of angle steel towers and the uncertainty of the location of parts, welding robots cannot be used. Most tower processing companies still need to rely entirely on manpower to complete the welding of tower feet, and the welding efficiency is extremely low. Affected by the welding level and welding experience of welders, the quality of angle steel tower feet cannot be guaranteed.

[0004] For example, the special welding fixture for the angle steel tower foot of the transmission tower disclosed in Chinese patent CN206200439U solves the difficulties in the traditional welding process of workpieces. It can adjust the position of the welding workpiece so that all welds can achieve ideal horizontal V-shaped welding, which facilitates the workers' welding operations and improves the welding quality of the workpiece.

[0005] However, the fixture can only weld four steel plates into a cross-shaped tower foot, and thus cannot weld a tower foot of two or three steel plates.

[0006] For this reason, we urgently need to provide a special welding fixture for the angle steel tower foot of a transmission tower. Utility Model Content

[0007] The purpose of the utility model is to provide a special welding fixture for the tower foot of the angle steel tower of the transmission tower, so as to solve the problem proposed in the above background technology that the fixture can only weld four steel plates into a cross-shaped tower foot, and thus cannot weld the tower foot of two or three steel plates.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special welding fixture for the tower foot of an angle steel tower of a transmission tower, comprising a workbench and a support column, wherein the support column is fixedly connected to the four corners of the lower side of the workbench, and a clamping mechanism is connected to the upper side of the workbench, wherein the clamping mechanism comprises a clamping unit and a lighting unit, wherein the clamping unit is arranged in the middle of the upper side of the workbench, and the lighting unit is arranged at the four corners of the upper side of the workbench.

[0009] The clamping unit includes a guide rail, a slider, a first threaded rod, a first handle, a cylinder, a clamping frame, a second threaded rod, a second handle and a pressure plate. The guide rail is fixedly connected to the middle of the upper side of the workbench, the slider is connected to the outer end of the guide rail, the first threaded rod is connected to the middle position of the inner upper end of the slider, the first handle is fixedly connected to the upper end of the first threaded rod, the cylinder is fixedly connected to the side of the slider close to the center of the workbench, the clamping frame is fixedly connected to the output shaft end of the cylinder, the second threaded rod is connected to the middle position of the inner front end of the clamping frame, the second handle is fixedly connected to the front side of the second threaded rod, and the pressure plate is fixedly connected to the rear end of the second threaded rod.

[0010] A further improvement is that a T-slot is provided in the middle of the lower end of the slider, and the outer side of the guide rail is slidably connected to the inner side of the T-slot, so that when the slider moves, it can only slide along the outer side of the guide rail, thereby limiting the movement of the slider.

[0011] A further improvement is that a first threaded hole is provided in the middle of the upper end of the slider, the outer side of the first threaded rod is threadedly connected to the inner side of the first threaded hole, and the lower end of the first threaded rod abuts against the upper side of the guide rail. Thus, after the slider is slid to a desired position along the guide rail, the first handle is turned to drive the first threaded rod to rotate in the first threaded hole and move downward until the lower end of the first threaded rod moves to contact the upper side of the guide rail, so that the slider can be fixed to the outer end of the guide rail.

[0012] A further improvement is that a second threaded hole is provided in the middle of the front end of the clamp frame, and the outer side of the second threaded rod is threadedly connected to the inner side of the second threaded hole. Thus, when the second handle is turned to drive the second threaded rod in the second threaded hole to rotate, the second threaded rod can move relative to the clamp frame, thereby driving the pressure plate to move together.

[0013] A further improvement is that the rear side of the pressing plate abuts against the front lower end of the steel plate to be welded, and the inner rear end of the clamping frame abuts against the rear lower end of the steel plate to be welded. Thus, after moving a corner of the lower end of the steel plate to be welded between the clamping frames, the second handle is rotated to drive the second threaded rod to rotate, and the pressing plate is moved back to the front side of the lower end of the steel plate, so that the steel plate to be welded can be clamped and fixed in the clamping frame.

[0014] A further improvement is that the lighting unit includes a support rod, a connecting rod and an LED light panel, the support rod is fixedly connected to the four upper corners of the workbench, and the connecting rod is fixedly connected to one end of the upper outer side of the support rod close to the center of the workbench.

[0015] A further improvement is that a rubber pad is fixedly connected to the side of the pressing plate away from the second threaded rod and the inner side of the clamp frame. Therefore, when the steel plate is fixed to the clamp frame, the rubber pad on the side of the pressing plate away from the second threaded rod and the inner side of the clamp frame contacts the outer side of the steel plate, so that the steel plate can be clamped more firmly, thereby ensuring the accuracy of steel plate welding.

[0016] In summary, the present application discloses a special welding fixture for the angle steel tower foot of a transmission tower.

[0017] This technical solution clamps the steel plates into a clamping frame and then slides a slider along the outer side of the guide rail, so that the steel plates can be arranged in equal arcs and then welded, thereby welding tower feet formed by welding different numbers of steel plates.

[0018] Furthermore, by activating the LED light panel at the upper end of the support rod, the steel plates between the guide rails can be illuminated, making it easier for workers to find the correct welding position during welding, thereby improving the welding accuracy of the tower feet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the guide rail of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the clamping unit of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the clamping frame of the utility model.

[0023] In the figure: 1, workbench; 2, support column; 301, guide rail; 302, slider; 303, first threaded rod; 304, first handle; 305, cylinder; 306, clamping frame; 307, second threaded rod; 308, second handle; 309, pressure plate; 401, support rod; 402, connecting rod; 403, LED light board. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A special welding fixture for the foot of an angle steel tower of a transmission tower comprises a workbench 1 and a support column 2, wherein the support column 2 is fixedly connected to the four corners of the lower side of the workbench 1, and a clamping mechanism is connected to the upper side of the workbench 1, wherein the clamping mechanism comprises a clamping unit and a lighting unit, wherein the clamping unit is arranged in the middle of the upper side of the workbench 1, and the lighting unit is arranged at the four corners of the upper side of the workbench 1.

[0028] The clamping unit includes a guide rail 301, a slider 302, a first threaded rod 303, a first handle 304, a cylinder 305, a clamping frame 306, a second threaded rod 307, a second handle 308 and a pressing plate 309. The guide rail 301 is fixedly connected to the middle of the upper side of the workbench 1, and the slider 302 is connected to the outer end of the guide rail 301. A T-shaped slot is provided in the middle of the lower end of the slider 302, and the outer side of the guide rail 301 is slidably connected to the inner side of the T-shaped slot. Therefore, when the slider 302 moves, it can only slide along the outer side of the guide rail 301, thereby limiting the movement of the slider 302.

[0029] The first threaded rod 303 is connected to the middle position of the inner upper end of the slider 302. A first threaded hole is provided in the middle position of the inner upper end of the slider 302. The outer side of the first threaded rod 303 is threadedly connected to the inner side of the first threaded hole. The lower end of the first threaded rod 303 abuts against the upper side of the guide rail 301. Therefore, after the slider 302 is slid to the desired position along the guide rail 301, the first handle 304 is rotated to drive the first threaded rod 303 to rotate in the first threaded hole and move downward until the lower end of the first threaded rod 303 moves to contact the upper side of the guide rail 301, so that the slider 302 can be fixed to the outer end of the guide rail 301.

[0030] The first handle 304 is fixedly connected to the upper end of the first threaded rod 303, the cylinder 305 is fixedly connected to the side of the slider 302 close to the center of the workbench 1, the clamping frame 306 is fixedly connected to the output shaft end of the cylinder 305, the second threaded rod 307 is connected to the middle position of the front end inside the clamping frame 306, the second handle 308 is fixedly connected to the front side of the second threaded rod 307, and the pressing plate 309 is fixedly connected to the rear end of the second threaded rod 307. A second threaded hole is provided in the middle position of the front end inside the clamping frame 306, and the outer side of the second threaded rod 307 is threadedly connected to the inner side of the second threaded hole. Therefore, when the second handle 308 is rotated to drive the second threaded rod 307 located in the second threaded hole to rotate, the second threaded rod 307 can move relative to the clamping frame 306, thereby driving the pressing plate 309 to move together.

[0031] The rear side of the pressing plate 309 abuts against the front lower end of the steel plate to be welded, and the inner rear end of the clamping frame 306 abuts against the rear lower end of the steel plate to be welded. Thus, after moving a corner of the lower end of the steel plate to be welded between the clamping frames 306, the second handle 308 is rotated to drive the second threaded rod 307 to rotate, and the pressing plate 309 is moved back to the front side of the lower end of the steel plate, so that the steel plate to be welded can be clamped and fixed in the clamping frame 306.

[0032] Embodiment 2:

[0033] On the basis of the first embodiment: the lighting unit includes a support rod 401, a connecting rod 402 and an LED light board 403, the support rod 401 is fixedly connected to the four corners of the upper side of the workbench 1, and the connecting rod 402 is fixedly connected to one end of the upper outer side of the support rod 401 close to the center of the workbench 1. A rubber pad is fixedly connected to the side of the pressing plate 309 away from the second threaded rod 307 and the inner side of the clamping frame 306. Therefore, when the steel plate is fixed to the clamping frame 306, the rubber pad on the side of the pressing plate 309 away from the second threaded rod 307 and the inner side of the clamping frame 306 contacts the outer side of the steel plate, so that the steel plate can be clamped more firmly, thereby ensuring the accuracy of the steel plate welding.

[0034] Embodiment three:

[0035] Based on Example 1:

[0036] Working principle: When in use, first move one corner of each steel plate required for welding the tower foot of the angle steel tower of the transmission tower to the inner side of the clamp frame 306, then rotate the second handle 308 to drive the second threaded rod 307 to rotate while the pressure plate 309 moves back to the front side of the steel plate, and fix the steel plate to the clamp frame 306, then slide the slider 302 along the outer side of the guide rail 301, drive each clamped steel plate to move to the upper end of the workbench 1 with an equal arc, then rotate the first handle 304 to drive the first threaded rod 303 to rotate while moving down to the upper side of the contact guide rail 301, so that the slider 302 is fixed to the outer side of the guide rail 301, and then weld the contact points of each steel plate.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A special welding fixture for the angle steel tower foot of a transmission tower, comprising a workbench (1) and a support column (2), wherein the support column (2) is fixedly connected to the four corners of the lower side of the workbench (1), characterized in that: The upper side of the workbench (1) is connected to a clamping mechanism, the clamping mechanism comprising a clamping unit and a lighting unit, the clamping unit is arranged in the middle of the upper side of the workbench (1), and the lighting unit is arranged at the four corners of the upper side of the workbench (1); The clamping unit comprises a guide rail (301), a slider (302), a first threaded rod (303), a first handle (304), a cylinder (305), a clamping frame (306), a second threaded rod (307), a second handle (308) and a pressing plate (309), wherein the guide rail (301) is fixedly connected to the middle of the upper side of the workbench (1), the slider (302) is connected to the outer end of the guide rail (301), the first threaded rod (303) is connected to the middle position of the inner upper end of the slider (302), and the first The handle (304) is fixedly connected to the upper end of the first threaded rod (303), the cylinder (305) is fixedly connected to the side of the slider (302) close to the center of the workbench (1), the clamping frame (306) is fixedly connected to the output shaft end of the cylinder (305), the second threaded rod (307) is connected to the middle position of the front end inside the clamping frame (306), the second handle (308) is fixedly connected to the front side of the second threaded rod (307), and the pressure plate (309) is fixedly connected to the rear end of the second threaded rod (307).

2. The special welding fixture for the angle steel tower foot of a transmission tower according to claim 1 is characterized in that: A T-shaped slot is provided at the middle position of the lower end of the slider (302), and the outer side of the guide rail (301) is slidably connected to the inner side of the T-shaped slot.

3. The special welding fixture for the angle steel tower foot of a transmission tower according to claim 1, characterized in that: A first threaded hole is provided in the middle of the upper inner end of the slider (302); the outer side of the first threaded rod (303) is threadedly connected to the inner side of the first threaded hole; and the lower end of the first threaded rod (303) abuts against the upper side of the guide rail (301).

4. The special welding fixture for the angle steel tower foot of a power transmission tower according to claim 1, characterized in that: A second threaded hole is provided in the middle of the front end of the clamp frame (306), and the outer side of the second threaded rod (307) is threadedly connected to the inner side of the second threaded hole.

5. The special welding fixture for the angle steel tower foot of a transmission tower according to claim 1, characterized in that: The rear side of the pressing plate (309) abuts against the front lower end of the steel plate to be welded, and the inner rear end of the clamping frame (306) abuts against the rear lower end of the steel plate to be welded.

6. The special welding fixture for the angle steel tower foot of a power transmission tower according to claim 1, characterized in that: The lighting unit comprises a support rod (401), a connecting rod (402) and an LED light panel (403); the support rod (401) is fixedly connected to the four upper corners of the workbench (1); and the connecting rod (402) is fixedly connected to one end of the upper outer side of the support rod (401) close to the center of the workbench (1).

7. The special welding fixture for the angle steel tower foot of a power transmission tower according to claim 1, characterized in that: A rubber pad is fixedly connected to one side of the pressing plate (309) away from the second threaded rod (307) and the inner side of the clamping frame (306).

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