Fixture for welding angle steel of electric tower

Abstract

The invention discloses a clamp for electric tower angle steel welding, and belongs to the technical field of electric tower angle steel welding, the clamp comprises a machine tool, a storage unit is assembled on one side of the machine tool, short angle steel used for lengthening welding is assembled in the storage unit, and a clamping mechanism is assembled on the machine tool; through the arranged bottom table unit and the front end clamping unit, after the long angle steel placed on the long bottom table and fixed through the front end clamping unit and the short angle steel placed on the short bottom table are welded, the included angle of the front end clamping unit can be pushed to be gradually reduced through the driving unit; meanwhile, the angle steel which is lengthened and welded once is driven by the upper wheel body and the lower wheel body to move from right to left, so that the welded short angle steel can be pulled out of the storage unit, and new short angle steel falls down again and abuts against the end of the lengthened angle steel; at the moment, the driving unit drives the front end clamping unit to reset backwards to a state of clamping the end part again, and the upper wheel body and the lower wheel body can rotate in the process, so that the front end clamping unit can reset smoothly.

Description

Technical Field

[0001] The invention relates to the technical field of electric tower angle steel welding, in particular to a clamp for welding electric tower angle steel. Background Art

[0002] Electric towers are trapezoidal or triangular tower-shaped buildings, usually 25-40 meters high. They are steel frame structures. Electric towers are mostly built near power plants and distribution stations in the wild. They are important facilities in the power sector, which can overhead wires and provide protection and support. The design, manufacture, installation, maintenance and quality inspection of electric towers are important guarantees for the operation and development of modern power systems.

[0003] Electric towers require a large number of 90-degree angle steels. When the 90-degree angle steel needs to be lengthened, two sections of 90-degree angle steel must be welded, or even multiple sections of 90-degree angle steel must be welded. This requires the use of a clamp to clamp and fix the 90-degree angle steel to maintain the stability of the 90-degree angle steel during the welding process.

[0004] The existing welding fixtures for angle steels of power towers show obvious efficiency bottlenecks in continuous multi-section welding operations. Specifically, after completing the welding of two sections of 90-degree angle steels, the operator must first manually release the clamp from tightening the 90-degree angle steel, and then move the welded 90-degree angle steel to one side, and then accurately connect it to the new section of 90-degree angle steel to be welded, and use the clamp to fix it again. This series of steps is not only cumbersome and time-consuming, but also greatly restricts the overall efficiency of continuous multi-section extension welding. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that in the continuous multi-section welding operation of the angle steel welding fixture of the electric tower, after completing the welding of two sections of 90-degree angle steel, the operator must first manually release the fastening of the 90-degree angle steel by the fixture, and then move the welded 90-degree angle steel along one side, and then accurately dock the new section of 90-degree angle steel to be welded, and use the fixture again to fix it. This series of steps is not only cumbersome and time-consuming, but also greatly restricts the overall efficiency of continuous multi-section extension welding. A fixture for welding angle steel of electric tower is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A fixture for welding angle steel of an electric tower, comprising a machine tool, a material storage unit is installed on one side of the machine tool, short angle steels for lengthening welding are installed in the material storage unit, and a clamping mechanism is installed on the machine tool;

[0008] The clamping mechanism comprises a base unit mounted in the middle of the machine tool, a front end clamping unit is mounted on the material storage unit, and a long angle steel to be lengthened is placed on the base unit;

[0009] The front end clamping unit comprises an upper oblique rod and a lower oblique rod, both ends of the upper oblique rod are rotatably connected to an upper guide seat, one of the upper guide seats is fixed with an upper wheel clamping unit, both ends of the lower oblique rod are rotatably connected to a lower guide seat, one of the lower guide seats is fixed with a lower wheel clamping unit, the middle parts of the upper oblique rod and the lower oblique rod are both equipped with a middle rod, and both ends of the two middle rods are jointly equipped with a driving unit;

[0010] The upper wheel clamp unit and the lower wheel clamp unit are driven by the driving unit to push the long angle steel that has completed one lengthening welding to move to one side. After the short angle steel after welding is moved out of the storage unit, the new short angle steel and the lengthened long angle steel are pushed to move outward together until the end is at the welding position. At this time, the upper wheel clamp unit and the lower wheel clamp unit are driven by the driving unit to move on the long angle steel to the front side of the welding position to clamp the new welding position of the long angle steel.

[0011] As a further description of the above technical solution:

[0012] The machine tool comprises an operating table, and a plurality of supporting leg plates are fixed on the lower surface of the operating table.

[0013] As a further description of the above technical solution:

[0014] The material storage unit comprises an outer box fixed on the operating table, at least one telescopic rod is mounted on the inner top wall of the outer box, a pressing piece adapted to the short angle steel is fixed at one end of the telescopic rod, and a first spring for driving the pressing piece to press against the short angle steel is mounted on the outer surface of the telescopic rod;

[0015] A box door is hinged on the back of the outer box, a screw rod is threadedly passed through the box door, and one end of the screw rod inserted into the outer box is rotatably connected to a limiting plate for driving the ends of the short angle steels to be in the same vertical plane through a bearing.

[0016] As a further description of the above technical solution:

[0017] The base unit comprises a long base fixed to one side of the upper surface of the operating table, the long angle steel is placed on the long base, and a short base in the same straight line as the long base is fixed to the other side of the upper surface of the operating table, the short angle steel is placed on the short base;

[0018] Side panels are fixed on both sides of the upper surface of the operating table close to the long base, and at least one stud is threaded through the side panels. A ball seat is fixed to one end of the stud that passes through the side panels, and a rolling ball is rotatably connected inside the ball seat, and the outer wall of the rolling ball is in contact with the long angle steel.

[0019] As a further description of the above technical solution:

[0020] An upper vertical slide groove is provided on the front of the outer box, an upper vertical slider is slidably connected inside the upper vertical slide groove, one side of the upper vertical slider is fixed to another upper guide seat, the upper guide seat is slidably assembled on the outer box through the upper vertical slider, an upper retaining tube is fixed to the top of the inner wall of the upper vertical slide groove, a second spring is fixed to the inner top wall of the upper retaining tube, and the bottom end of the second spring is fixed to the top end of the upper vertical slider;

[0021] One of the supporting leg plates is provided with a lower vertical slide groove, and a lower vertical slider is slidably connected to the interior of the lower vertical slide groove, one side of the lower vertical slider is fixed to another lower guide seat, and the lower guide seat is slidably assembled on the supporting leg plate through the lower vertical slider, and a lower retaining tube is fixed to the bottom of the inner wall of the lower vertical slide groove, and a third spring is fixed on the inner bottom wall of the lower retaining tube, and the top of the third spring is fixed to the bottom end of the lower vertical slider.

[0022] As a further description of the above technical solution:

[0023] The upper wheel clamp unit comprises an upper mounting seat fixed to one of the upper guide seats, at least one upper wheel body is rotatably connected inside the upper mounting seat, a plurality of upper ratchet grooves are provided on the upper wheel body, a plurality of upper pawls distributed in an annular array and adapted to the upper ratchet grooves are rotatably connected to the inner wall of the upper mounting seat, a fourth spring is fixed to the upper pawl, and one end of the fourth spring is fixed to the inner wall of the upper mounting seat;

[0024] An upper transverse sliding groove is provided at one end of the side plate, an upper transverse sliding rod is slidably connected inside the upper transverse sliding groove, and one end of the upper transverse sliding rod is fixed to the upper mounting seat.

[0025] As a further description of the above technical solution:

[0026] The lower wheel clamp unit comprises a lower mounting seat fixed to one of the lower guide seats, at least one lower wheel body is rotatably connected inside the lower mounting seat, a plurality of lower ratchet grooves are provided on the lower wheel body, a plurality of lower pawls distributed in an annular array and adapted to the lower ratchet grooves are rotatably connected to the inner wall of the lower mounting seat, a fifth spring is fixed to the lower pawl, and one end of the fifth spring is fixed to the inner wall of the lower mounting seat;

[0027] A lower transverse slide groove is provided inside the long base, a lower transverse slide rod is slidably connected inside the lower transverse slide groove, and one end of the lower transverse slide rod is fixed to the lower mounting seat;

[0028] At least one deep groove is provided on the outer wall of the upper wheel body and the lower wheel body, and a touch unit is installed in the deep groove.

[0029] As a further description of the above technical solution:

[0030] The driving unit comprises two electric hydraulic rods, both ends of the two electric hydraulic rods are rotatably connected with movable seats, one side of one movable seat is fixed to the operating table, and one end of the other movable seat is fixed with a lower push rod, and the top end of the lower push rod is fixed with an upper push rod by bolts;

[0031] Side transverse sliding grooves are provided on both sides of the operating table, and side sliders are slidably connected in the side transverse sliding grooves. The side sliders are fixed to the inner sides of the lower push rods, and the lower push rods are slidably assembled on both sides of the operating table through the side sliders;

[0032] The outer walls of the lower push rod and the upper push rod are both provided with guide grooves adapted to the middle rod, one end of the middle rod passing through the guide groove is threadedly connected with an outer limit plate, and inner limit plates are fixed on both sides of the outer surface of the middle rod close to the outer limit plate.

[0033] As a further description of the above technical solution:

[0034] A short transverse slide groove is provided on the short bottom platform, and a push steel block is slidably mounted inside the short transverse slide groove. The thickness of the push steel block is less than that of the short angle steel. A back plate is fixed to one end of the push steel block, and a square tube is fixed to the back plate. A pull rod is inserted into the square tube, and one end of the pull rod is fixed to the lower push rod.

[0035] The upper surface and the lower surface of the square tube are both provided with through-retaining grooves, and the upper surface and the lower surface of the pull rod are both fixed with pull blocks matching the through-retaining grooves on one side away from the lower push rod.

[0036] As a further description of the above technical solution:

[0037] The touch unit comprises a rod-penetrating ring fixed in the deep groove, a guide rod is inserted in the rod-penetrating ring, one end of the guide rod and the middle of the outer surface are fixed with a limiting ring, a sixth spring is fixed on the lower surface of one of the limiting rings, the other end of the sixth spring is fixed to the bottom wall of the deep groove, and the other end of the guide rod is equipped with a touch head;

[0038] The upper surface and the lower surface of the rod ring are provided with a plurality of filling grooves, a seventh spring is fixed on the inner bottom wall of the filling groove, a vertical rod is fixed to one end of the seventh spring, a bell bowl is assembled on the top of the vertical rod, and a bell hammer matching the bell bowl is fixed to the upper surface of one of the restriction rings and the lower surface of the other restriction ring.

[0039] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0040] By setting the base unit and the front-end clamping unit, it is achieved that during continuous lengthening welding, the angle steel can be clamped and fixed, and the two angle steels to be welded together can be kept in the same horizontal line. After the long angle steel placed on the long base and fixed by the front-end clamping unit and the short angle steel placed on the short base are welded, the driving unit can push the front-end clamping unit to gradually reduce the angle. At the same time, the angle steel that has been lengthened and welded once is driven from right to left by the upper wheel body and the lower wheel body that are restricted from rotation, so that the welded short angle steel can be drawn out from the storage unit, and the new short angle steel can fall again and abut against the end of the lengthened angle steel. At this time, the front-end clamping unit is driven by the driving unit to reset backwards to the state of re-clamping the end. During the process, the upper wheel body and the lower wheel body can rotate, so that the front-end clamping unit can be smoothly reset, and so on. During continuous lengthening welding, there is no need to release the fixation of the angle steel before performing subsequent welding operations, which effectively improves the efficiency of continuous welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a first viewing angle provided by an embodiment of the present invention is shown;

[0042] Figure 2 It shows a schematic diagram of the structure of the interior of an outer box after it is cut open according to an embodiment of the present invention;

[0043] Figure 3 It shows a schematic structural diagram of a base unit provided according to an embodiment of the present invention;

[0044] Figure 4 A schematic diagram of the structure of a second viewing angle provided according to an embodiment of the present invention is shown;

[0045] Figure 5 It shows a schematic diagram of the planar structure of the outer box after being cut open according to an embodiment of the present invention;

[0046] Figure 6 It shows a schematic structural diagram of an upper wheel clamp unit provided according to an embodiment of the present invention;

[0047] Figure 7 It shows a schematic structural diagram of a lower wheel clamp unit provided according to an embodiment of the present invention;

[0048] Figure 8 The embodiment provided according to the present invention shows Figure 6 The enlarged structural diagram at A in the middle;

[0049] Fig. 9 The embodiment provided according to the present invention shows Figure 7 The enlarged structural diagram at B in the middle;

[0050] Fig.10A schematic diagram of the structure of a touch unit provided in an embodiment of the present invention is shown;

[0051] Fig.11 The embodiment provided according to the present invention shows Fig.10 Schematic diagram of the enlarged structure at point C in the middle.

[0052] Legend:

[0053] 10. Machine tool; 11. Operating table; 12. Support leg board;

[0054] 20. Material storage unit; 21. Outer box; 22. Telescopic rod; 23. Pressing member; 24. First spring; 25. Screw rod; 26. Limiting plate;

[0055] 30. Clamping mechanism; 31. Base unit; 311. Long base; 312. Short base; 313. Side plate; 314. Stud; 315. Roller ball; 32. Front clamping unit; 321. Upper oblique rod; 322. Lower oblique rod; 323. Upper guide seat; 324. Upper wheel clamping unit; 3241. Upper mounting seat; 3242. Upper wheel body; 3243. Upper ratchet groove; 3244. Upper ratchet pawl; 3245. Fourth spring; 3246. Upper transverse slide bar; 325. Lower guide seat; 326. Lower wheel clamping unit; 3261. Lower mounting seat; 3262. Lower wheel body; 3263. Lower ratchet groove; 3264. Lower ratchet pawl; 3265. Fifth spring; 3266. Lower transverse slide bar 327, middle rod; 328, drive unit; 3281, electric hydraulic rod; 3282, lower push rod; 3283, upper push rod; 3284, side horizontal slide; 3285, outer limit plate; 3286, push steel block; 3287, back plate; 3288, square tube; 3289, pull rod; 33, upper vertical slide; 34, upper retaining tube; 35, second spring; 36, lower vertical slide; 37, lower retaining tube; 38, third spring; 39, touch unit; 391, rod ring; 392, guide rod; 393, limit ring; 394, sixth spring; 395, seventh spring; 396, vertical rod; 397, bell bowl; 398, bell hammer; 399, touch head;

[0056] 40. Short angle steel;

[0057] 50. Long angle steel. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] like Figure 1 - Fig.11 As shown, the present invention provides:

[0060] A fixture for welding angle steel of an electric tower includes a machine tool 10, a material storage unit 20 is installed on one side of the machine tool 10, a short angle steel 40 for lengthening welding is installed in the material storage unit 20, and a clamping mechanism 30 is installed on the machine tool 10.

[0061] like Figure 1 and Figure 2 , the machine tool 10 includes an operating table 11, and a plurality of supporting leg plates 12 are fixed to the lower surface of the operating table 11;

[0062] Preferably, the bottom end of the supporting leg plate 12 is equipped with an adjustable foot, through which the height of the operating platform 11 can be adjusted.

[0063] like Figure 2 and Figure 5 The material storage unit 20 includes an outer box 21 fixed on the operating table 11, and at least one telescopic rod 22 is mounted on the inner top wall of the outer box 21. A pressing piece 23 adapted to the short angle steel 40 is fixed to one end of the telescopic rod 22, and a first spring 24 for driving the pressing piece 23 to press against the short angle steel 40 is mounted on the outer surface of the telescopic rod 22;

[0064] A door is hinged on the back of the outer box 21, and a screw 25 is threaded through the door. One end of the screw 25 that penetrates into the outer box 21 is rotatably connected to a limiting plate 26 for driving the ends of the short angle steel 40 to be in the same vertical plane through a bearing.

[0065] Specifically, before welding, the short angle steels 40 used to lengthen the long angle steels 50 are inserted in a stacked state under the top pressure piece 23. After the stacking is completed, the limiting plate 26 is gradually pressed against the end of the short angle steel 40 by rotating the screw 25, and the stacked short angle steels 40 are gradually adjusted to the ends being in the same vertical plane to ensure that no displacement occurs during unloading.

[0066] like Figure 2 , Figure 3 , Figure 4 and Figure 5 The clamping mechanism 30 includes a base unit 31 mounted in the middle of the machine tool 10, a front end clamping unit 32 is mounted on the material storage unit 20, and a long angle steel 50 to be lengthened is placed on the base unit 31;

[0067] An upper vertical slide groove 33 is provided on the front of the outer box 21, and an upper vertical slider is slidably connected inside the upper vertical slide groove 33, one side of the upper vertical slider is fixed to another upper guide seat 323, and the upper guide seat 323 is slidably assembled on the outer box 21 through the upper vertical slider, and an upper retaining tube 34 is fixed to the top of the inner wall of the upper vertical slide groove 33, and a second spring 35 is fixed to the inner top wall of the upper retaining tube 34, and the bottom end of the second spring 35 is fixed to the top end of the upper vertical slider;

[0068] A lower vertical slide groove 36 is provided on one of the support leg plates 12, and a lower vertical slider is slidably connected inside the lower vertical slide groove 36, and one side of the lower vertical slider is fixed to another lower guide seat 325, and the lower guide seat 325 is slidably assembled on the support leg plate 12 through the lower vertical slider, and a lower retaining tube 37 is fixed to the bottom of the inner wall of the lower vertical slide groove 36, and a third spring 38 is fixed to the inner bottom wall of the lower retaining tube 37, and the top end of the third spring 38 is fixed to the bottom end of the lower vertical slider;

[0069] When the upper and lower inclined rods 321 and 322 are gradually reset, the restoring force of the second spring 35 in the stretched state will assist the upper guide seat 323 to gradually reset upward. At the same time, when the upper and lower inclined rods 321 and 322 of the lower guide seat 325 move upward due to the gradually reduced angle, the third spring 38 is in a gradually stretched state. Similarly, when the upper and lower inclined rods 321 and 322 are gradually reset, the restoring force of the third spring 38 in the stretched state will assist the lower guide seat 325 to gradually reset downward.

[0070] like Figure 2 and Figure 3 The base unit 31 includes a long base 311 fixed to one side of the upper surface of the operating table 11, and the long angle steel 50 is placed on the long base 311. A short base 312 in the same straight line as the long base 311 is fixed to the other side of the upper surface of the operating table 11, and the short angle steel 40 is placed on the short base 312;

[0071] Side plates 313 are fixed on both sides of the upper surface of the operating table 11 near the long bottom platform 311. At least one stud 314 is threadedly passed through the side plate 313. A ball seat is fixed to one end of the stud 314 that passes through the side plate 313. A rolling ball 315 is rotatably connected inside the ball seat. The outer wall of the rolling ball 315 contacts the long angle steel 50.

[0072] Specifically, after the long angle steel 50 to be lengthened is placed on the surface of the long base 311, the ball 315 gradually contacts the outer wall of the long angle steel 50 by rotating the stud 314. After the contact, the position of the long angle steel 50 can be restricted to ensure that the starting end cannot be lifted up, while ensuring that the long angle steel 50 can move smoothly.

[0073] like Figure 2 , Figure 3 and Figure 5 The front end clamping unit 32 includes an upper oblique rod 321 and a lower oblique rod 322. Both ends of the upper oblique rod 321 are rotatably connected to upper guide seats 323, one of which is fixed with an upper wheel clamping unit 324. Both ends of the lower oblique rod 322 are rotatably connected to lower guide seats 325, one of which is fixed with a lower wheel clamping unit 326. The middle parts of the upper oblique rod 321 and the lower oblique rod 322 are both equipped with middle rods 327, and both ends of the two middle rods 327 are jointly equipped with driving units 328.

[0074] Driven by the driving unit 328, the upper wheel clamp unit 324 and the lower wheel clamp unit 326 push the long angle steel 50 that has completed one lengthening welding to move to one side. After the short angle steel 40 after welding is moved out of the storage unit 20, the new short angle steel 40 and the lengthened long angle steel 50 are pushed outward together until the end is in the welding position. At this time, the upper wheel clamp unit 324 and the lower wheel clamp unit 326 are driven by the driving unit 328 to move on the long angle steel 50 to the front side of the welding position to clamp the new welding position of the long angle steel 50.

[0075] like Figure 3 , Figure 4 and Figure 5 The driving unit 328 includes two electric hydraulic rods 3281, both ends of the two electric hydraulic rods 3281 are rotatably connected to movable seats, one side of one movable seat is fixed to the operating table 11, and one end of the other movable seat is fixed with a lower push rod 3282, and the top of the lower push rod 3282 is fixed with an upper push rod 3283 by bolts;

[0076] Side transverse slide grooves 3284 are provided on both sides of the operating table 11. Side slide blocks are slidably connected in the side transverse slide grooves 3284. The side slide blocks are fixed to the inner sides of the lower push rods 3282. The lower push rods 3282 are slidably assembled on both sides of the operating table 11 through the side slide blocks.

[0077] The outer walls of the lower push rod 3282 and the upper push rod 3283 are provided with guide grooves adapted to the middle rod 327. One end of the middle rod 327 passing through the guide groove is threadedly connected with an outer limit plate 3285. Inner limit plates are fixed on both sides of the outer surface of the middle rod 327 near the outer limit plate 3285.

[0078] Specifically, after the long angle steel 50 is lengthened and welded once, when it needs to be lengthened again, the electric hydraulic rod 3281 is started to push the lower push rod 3282 together with the upper push rod 3283 to move from right to left. In the process, the two middle rods 327 are displaced, and the upper oblique rod 321 and the lower oblique rod 322 are driven to drive the upper wheel clamp unit 324 and the lower wheel clamp unit 326 to move from right to left. During the movement, the long angle steel 50 that has been lengthened once is driven to move from right to left. When the short angle steel 40 welded to the long angle steel 50 completely slides out from the short base 312, the new short angle steel 40 falls down and fits with the end of the short angle steel 40 that has slid out.

[0079] like Figure 3 , Figure 6 and Figure 8 The upper wheel clamp unit 324 includes an upper mounting seat 3241 fixed to one of the upper guide seats 323, at least one upper wheel body 3242 is rotatably connected to the interior of the upper mounting seat 3241, a plurality of upper ratchet grooves 3243 are provided on the upper wheel body 3242, a plurality of upper ratchet pawls 3244 distributed in a circular array and adapted to the upper ratchet grooves 3243 are rotatably connected to the inner wall of the upper mounting seat 3241, a fourth spring 3245 is fixed to the upper ratchet pawl 3244, and one end of the fourth spring 3245 is fixed to the inner wall of the upper mounting seat 3241;

[0080] An upper transverse sliding groove is formed at one end of the side plate 313, and an upper transverse sliding rod 3246 is slidably connected inside the upper transverse sliding groove, and one end of the upper transverse sliding rod 3246 is fixed to the upper mounting seat 3241;

[0081] Specifically, during the process of the upper mounting seat 3241 moving from right to left, the upper pawl 3244 abuts against the upper ratchet groove 3243 on the surface of the upper wheel body 3242, so that the upper wheel body 3242 cannot rotate during the process of moving from left to right. At this time, the upper wheel body 3242 abuts against the outer wall of the long angle steel 50, driving the long angle steel 50 to move from right to left. When the upper mounting seat 3241 moves from left to right for resetting, the upper pawl 3244 no longer abuts against the upper ratchet groove 3243. At this time, the upper wheel body 3242 can rotate during the process of moving from left to right, ensuring that the long angle steel 50 will not be driven to move to the right again during the resetting process.

[0082] like Figure 3 , Figure 7 and Fig. 9The lower wheel clamp unit 326 includes a lower mounting seat 3261 fixed to one of the lower guide seats 325, at least one lower wheel body 3262 is rotatably connected inside the lower mounting seat 3261, a plurality of lower ratchet grooves 3263 are provided on the lower wheel body 3262, a plurality of lower ratchet pawls 3264 distributed in an annular array and adapted to the lower ratchet grooves 3263 are rotatably connected to the inner wall of the lower mounting seat 3261, a fifth spring 3265 is fixed to the lower ratchet pawl 3264, one end of the fifth spring 3265 is fixed to the inner wall of the lower mounting seat 3261;

[0083] A lower transverse slide groove is provided inside the long base 311, and a lower transverse slide rod 3266 is slidably connected inside the lower transverse slide groove, and one end of the lower transverse slide rod 3266 is fixed to the lower mounting seat 3261;

[0084] Specifically, if the state of the upper wheel body 3242 is the same, when the lower mounting seat 3261 moves from right to left, the lower pawl 3264 abuts against the lower ratchet groove 3263 on the lower wheel body 3262, so that the lower wheel body 3262 cannot rotate during the movement from left to right. At this time, the lower wheel body 3262 abuts against the inner wall of the long angle steel 50, and cooperates with the upper wheel body 3242 to drive the long angle steel 50 to move from right to left. When the lower mounting seat 3261 moves from left to right for reset, the lower pawl 3264 no longer abuts against the lower ratchet groove 3263. At this time, the lower wheel body 3262 can rotate during the movement from left to right, ensuring that the long angle steel 50 will not be driven to move to the right again during the reset process.

[0085] like Figure 3 and Figure 5 A short transverse slide is provided on the short base 312, and a push steel block 3286 is slidably mounted inside the short transverse slide. The thickness of the push steel block 3286 is less than that of the short angle steel 40. A back plate 3287 is fixed to one end of the push steel block 3286, and a square tube 3288 is fixed to the back plate 3287. A pull rod 3289 is inserted into the square tube 3288, and one end of the pull rod 3289 is fixed to the lower push rod 3282;

[0086] The upper and lower surfaces of the square tube 3288 are provided with through-retaining grooves, and the upper and lower surfaces of the pull rod 3289 are fixed with pull blocks matching the through-retaining grooves on the sides away from the lower push rod 3282;

[0087] When the lower push rod 3282 moves from right to left, the short angle steel 40 welded to the long angle steel 50 moves to the right and is separated from the short base 312. At this time, the new short angle steel 40 falls down, and the pull rod 3289 moves to the right until the pull block on it abuts against the inner wall of the left side of the through-retaining groove. At this time, when the lower push rod 3282 continues to move to the left, the pull rod 3289 will push the square tube 3288 to the left through the pull block. At the same time, the square tube 3288 drives the push steel block 3286 to move on the short base 312 following the square tube 3288 through the back plate 3287. During the movement, the new short angle steel 40 is pushed to move along with the angle steel that has been lengthened and welded once, so that the end of the new short angle steel 40 extends out of the outer box 21. During the process, the ends are kept in a state of butting against each other in real time. When the push rod 3282 is reset to the right, the push steel block 3286 is gradually driven to reset to the initial state (i.e., the end of the push steel block 3286 away from the back plate 3287 is in the same vertical plane as the stacked short angle steels 40). In this state, when the new short angle steel 40 falls on the short base 312, the end of the short angle steel 40 contacts the end of the push steel block 3286.

[0088] like Figure 8 , Fig. 9 , Fig.10 and Fig.11 , at least one deep groove is provided on the outer wall of the upper wheel body 3242 and the lower wheel body 3262, and a touch unit 39 is installed in the deep groove;

[0089] The touch unit 39 includes a rod ring 391 fixed in the deep groove, a guide rod 392 is inserted in the rod ring 391, one end of the guide rod 392 and the middle of the outer surface are fixed with a limiting ring 393, a sixth spring 394 is fixed to the lower surface of one limiting ring 393, the other end of the sixth spring 394 is fixed to the bottom wall of the deep groove, and the other end of the guide rod 392 is equipped with a touch head 399;

[0090] A plurality of filling grooves are provided on the upper and lower surfaces of the rod-penetrating ring 391, a seventh spring 395 is fixed on the inner bottom wall of the filling groove, a vertical rod 396 is fixed to one end of the seventh spring 395, a bell bowl 397 is mounted on the top of the vertical rod 396, a bell hammer 398 matching the bell bowl 397 is fixed to the upper surface of one limiting ring 393 and the lower surface of the other limiting ring 393;

[0091] When the upper mounting seat 3241 and the lower mounting seat 3261 move from left to right for resetting, the upper wheel body 3242 and the lower wheel body 3262 roll on the upper and lower surfaces of the angle steel. When passing through the welding position during the rolling process, if the welding part of the angle steel after welding is concave or convex, the contact head 399 on the upper wheel body 3242 and the lower wheel body 3262 will shrink inward or extend outward when passing through the convexity or depression. During the shrinkage or extension process, the bell hammer 398 will hit the bell bowl 397 and make a sound, reminding the personnel that there is an unevenness problem around the welding part after this welding, so as to deal with the problem in time and avoid serious unevenness problems during continuous welding.

[0092] Specifically, when the electric tower angle steel welding fixture is working / in use:

[0093] First, the preparation work before welding is carried out. First, the box door on the outer box 21 is opened, and then the short angle steels 40 used to lengthen the long angle steels 50 are inserted in a stacked shape under the top pressing piece 23. After the stacking is completed, the box door is closed, and then when the screw 25 is rotated, the limiting plate 26 gradually abuts against the end of the short angle steel 40, and the stacked short angle steels 40 are gradually adjusted to be in the same vertical plane;

[0094] Then the electric hydraulic rod 3281 is started to push the lower push rod 3282 and the upper push rod 3283 to move from right to left, and the two middle rods 327 are displaced in the process. The lower push rod 3282 also drives the pull rod 3289 to move together. When the pull rod 3289 moves to the point where the pull block on it abuts against the inner wall on the left side of the through-retaining groove, the square tube 3288 is pushed to move together through the pull block. In the process, the square tube 3288 drives the push steel block 3286 on the short base 312 to move along with the square tube 3288 through the back plate 3287. The moving process The end of the short angle steel 40 at the bottom layer is pushed out to the outside of the outer box 21. When the outwardly protruding end of the short angle steel 40 moves to the welding position, the lower push rod 3282 is stopped. At this time, the electric hydraulic rod 3281 is started again to drive the lower push rod 3282 to move rightward for reset. After reset, the electric hydraulic rod 3281 is closed. Then, the long angle steel 50 to be continuously lengthened is placed on the long bottom platform 311 and moved to the right, gradually inserted between the upper wheel body 3242 and the lower wheel body 3262, and abutted against the end of the short angle steel 40 at the bottom layer. At this time, a welding is performed;

[0095] After one lengthening welding is completed, when it is necessary to lengthen again, the electric hydraulic rod 3281 is started to push the lower push rod 3282 and the upper push rod 3283 to move from right to left, and the two middle rods 327 are displaced in the process, and the upper inclined rod 321 and the lower inclined rod 322 are driven to drive the upper wheel clamp unit 324 and the lower wheel clamp unit 326 to move from right to left. During the movement, the long angle steel 50 that has been lengthened once is driven to move from right to left. When the short angle steel 40 welded with the long angle steel 50 completely slides out of the short base 312, the new short angle steel 40 falls down and fits with the end of the short angle steel 40 that slides out.

[0096] At this time, the pull rod 3289 moves until the pull block on it abuts against the inner wall of the left side of the through-retaining groove. At this time, the lower push rod 3282 continues to move to the left. The pull rod 3289 abuts against the square tube 3288 through the pull block and moves to the left together. At the same time, the square tube 3288 drives the push steel block 3286 to move with the square tube 3288 on the short base 312 through the back plate 3287. During the movement, the new short angle steel 40 is pushed to move with the extended welded angle steel, so that the end of the new short angle steel 40 extends to the outside of the outer box 21. During the process, the end portions are kept in a state of abutment in real time. When the lower push rod 3282 is reset to the right, the push steel block 3286 is gradually driven to reset to the initial state. At the same time, the upper inclined rod 321 and the lower inclined rod 322 drive the upper wheel clamp unit 324 and the lower wheel clamp unit 3 26 is reset to the state of clamping the end of the angle steel, which ensures stability during the welding process, and this process is repeated. When the long angle steel 50 is lengthened to the required length, it can be pushed outward. At the same time, during the resetting process, the upper wheel body 3242 and the lower wheel body 3262 roll on the upper surface and the lower surface of the angle steel. When passing the welding position during the rolling process, if the welding part of the angle steel after welding is concave or convex, the contact head 399 on the upper wheel body 3242 and the lower wheel body 3262 will shrink inward or extend outward when passing through the convexity or concave. During the shrinkage or extension process, the bell hammer 398 will hit the bell bowl 397 and make a sound, reminding the personnel that there is an uneven problem around the welding part after this welding, and the subsequent continuous welding operation can be carried out after processing.

[0097] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixture for welding angle steel of an electric tower, comprising a machine tool (10), a material storage unit (20) being installed on one side of the machine tool (10), and a short angle steel (40) for lengthening welding being installed in the material storage unit (20), characterized in that: The machine tool (10) is equipped with a clamping mechanism (30); The clamping mechanism (30) comprises a base unit (31) mounted in the middle of the machine tool (10), a front end clamping unit (32) is mounted on the material storage unit (20), and a long angle steel (50) to be lengthened is placed on the base unit (31); The front end clamping unit (32) comprises an upper oblique rod (321) and a lower oblique rod (322), both ends of the upper oblique rod (321) are rotatably connected to an upper guide seat (323), one of the upper guide seats (323) is fixed with an upper wheel clamping unit (324), both ends of the lower oblique rod (322) are rotatably connected to a lower guide seat (325), one of the lower guide seats (325) is fixed with a lower wheel clamping unit (326), the middle parts of the upper oblique rod (321) and the lower oblique rod (322) are both equipped with a middle rod (327), and both ends of the two middle rods (327) are jointly equipped with a driving unit (328); The upper wheel clamp unit (324) and the lower wheel clamp unit (326) are driven by the driving unit (328) to push the long angle steel (50) that has completed the elongation welding to one side, and after the short angle steel (40) after welding is moved out of the storage unit (20), the new short angle steel (40) and the elongated long angle steel (50) are pushed outward together until the end is at the welding position. At this time, the upper wheel clamp unit (324) and the lower wheel clamp unit (326) are driven by the driving unit (328) to move on the long angle steel (50) to the front side of the welding position, and the new welding position of the long angle steel (50) is clamped.

2. A fixture for welding angle steel of an electric tower according to claim 1, characterized in that: The machine tool (10) comprises an operating table (11), and a plurality of supporting leg plates (12) are fixed to the lower surface of the operating table (11).

3. A fixture for welding angle steel of an electric tower according to claim 2, characterized in that: The material storage unit (20) comprises an outer box (21) fixed on the operating table (11), at least one telescopic rod (22) is mounted on the inner top wall of the outer box (21), one end of the telescopic rod (22) is fixed with a pressing piece (23) adapted to the short angle steel (40), and the outer surface of the telescopic rod (22) is provided with a first spring (24) for driving the pressing piece (23) to press against the short angle steel (40); A box door is hingedly connected to the back of the outer box (21), and a screw rod (25) is threadedly passed through the box door. One end of the screw rod (25) that penetrates into the outer box (21) is rotatably connected to a limiting plate (26) for driving the ends of the short angle steel (40) to be in the same vertical plane through a bearing.

4. The fixture for welding angle steel of an electric tower according to claim 2, characterized in that: The base unit (31) comprises a long base (311) fixed to one side of the upper surface of the operating table (11), the long angle steel (50) is placed on the long base (311), and a short base (312) in the same straight line as the long base (311) is fixed to the other side of the upper surface of the operating table (11), and the short angle steel (40) is placed on the short base (312); Side panels (313) are fixed on both sides of the upper surface of the operating table (11) close to the long base (311), and at least one stud (314) is threadedly inserted into the side panel (313). A ball seat is fixed at one end of the stud (314) passing through the side panel (313), and a rolling ball (315) is rotatably connected inside the ball seat, and the outer wall of the rolling ball (315) is in contact with the long angle steel (50).

5. The fixture for welding angle steel of an electric tower according to claim 3, characterized in that: An upper vertical slide groove (33) is provided on the front of the outer box (21), an upper vertical slider is slidably connected inside the upper vertical slide groove (33), one side of the upper vertical slider is fixed to another upper guide seat (323), the upper guide seat (323) is slidably assembled on the outer box (21) through the upper vertical slider, an upper retaining tube (34) is fixed to the top of the inner wall of the upper vertical slide groove (33), a second spring (35) is fixed to the inner top wall of the upper retaining tube (34), and the bottom end of the second spring (35) is fixed to the top end of the upper vertical slider; A lower vertical slide groove (36) is provided on one of the supporting leg plates (12), and a lower vertical slider is slidably connected inside the lower vertical slide groove (36). One side of the lower vertical slider is fixed to another lower guide seat (325), and the lower guide seat (325) is slidably assembled on the supporting leg plate (12) through the lower vertical slider. A lower retaining tube (37) is fixed to the bottom of the inner wall of the lower vertical slide groove (36), and a third spring (38) is fixed to the inner bottom wall of the lower retaining tube (37), and the top end of the third spring (38) is fixed to the bottom end of the lower vertical slider.

6. The fixture for welding angle steel of an electric tower according to claim 4, characterized in that: The upper wheel clamp unit (324) comprises an upper mounting seat (3241) fixed to one of the upper guide seats (323); at least one upper wheel body (3242) is rotatably connected inside the upper mounting seat (3241); a plurality of upper ratchet grooves (3243) are provided on the upper wheel body (3242); a plurality of upper ratchet pawls (3244) distributed in a ring array and adapted to the upper ratchet grooves (3243) are rotatably connected to the inner wall of the upper mounting seat (3241); a fourth spring (3245) is fixed to the upper ratchet pawl (3244); one end of the fourth spring (3245) is fixed to the inner wall of the upper mounting seat (3241); An upper transverse sliding groove is formed at one end of the side plate (313), an upper transverse sliding rod (3246) is slidably connected inside the upper transverse sliding groove, and one end of the upper transverse sliding rod (3246) is fixed to the upper mounting seat (3241).

7. The fixture for welding angle steel of an electric tower according to claim 6, characterized in that: The lower wheel clamp unit (326) comprises a lower mounting seat (3261) fixed to one of the lower guide seats (325); at least one lower wheel body (3262) is rotatably connected inside the lower mounting seat (3261); a plurality of lower ratchet grooves (3263) are provided on the lower wheel body (3262); a plurality of lower ratchet pawls (3264) distributed in an annular array and adapted to the lower ratchet grooves (3263) are rotatably connected to the inner wall of the lower mounting seat (3261); a fifth spring (3265) is fixed to the lower ratchet pawl (3264); one end of the fifth spring (3265) is fixed to the inner wall of the lower mounting seat (3261); A lower transverse sliding groove is provided inside the long base (311), a lower transverse sliding rod (3266) is slidably connected inside the lower transverse sliding groove, and one end of the lower transverse sliding rod (3266) is fixed to the lower mounting seat (3261); At least one deep groove is provided on the outer wall of the upper wheel body (3242) and the lower wheel body (3262), and a touch unit (39) is installed in the deep groove.

8. The fixture for welding angle steel of an electric tower according to claim 2, characterized in that: The driving unit (328) comprises two electric hydraulic rods (3281), both ends of the two electric hydraulic rods (3281) are rotatably connected to movable seats, one side of one movable seat is fixed to the operating table (11), and one end of the other movable seat is fixed with a lower push rod (3282), and the top end of the lower push rod (3282) is fixed with an upper push rod (3283) by means of bolts; Side transverse sliding grooves (3284) are provided on both sides of the operating table (11), and side sliding blocks are slidably connected in the side transverse sliding grooves (3284). The side sliding blocks are fixed to the inner sides of the lower push rods (3282), and the lower push rods (3282) are slidably assembled on both sides of the operating table (11) through the side sliding blocks; The outer walls of the lower push rod (3282) and the upper push rod (3283) are provided with guide grooves adapted to the middle rod (327); one end of the middle rod (327) passing through the guide groove is threadedly connected to an outer limit plate (3285); and inner limit plates are fixed on both sides of the outer surface of the middle rod (327) close to the outer limit plate (3285).

9. The fixture for welding angle steel of an electric tower according to claim 4, characterized in that: The short base (312) is provided with a short transverse sliding groove, and a push steel block (3286) is slidably mounted inside the short transverse sliding groove. The thickness of the push steel block (3286) is less than the thickness of the short angle steel (40). A back plate (3287) is fixed to one end of the push steel block (3286), and a square tube (3288) is fixed to the back plate (3287). A pull rod (3289) is inserted into the square tube (3288), and one end of the pull rod (3289) is fixed to the lower push rod (3282); The upper surface and the lower surface of the square tube (3288) are both provided with a through retaining groove, and the upper surface and the lower surface of the pull rod (3289) are both fixed with a pull block adapted to the through retaining groove on the side away from the lower push rod (3282).

10. The fixture for welding angle steel of an electric tower according to claim 7, characterized in that: The touch unit (39) comprises a rod-penetrating ring (391) fixed in the deep groove, a guide rod (392) is inserted in the rod-penetrating ring (391), one end of the guide rod (392) and the middle of the outer surface are fixed with a limiting ring (393), a sixth spring (394) is fixed on the lower surface of one of the limiting rings (393), the other end of the sixth spring (394) is fixed to the bottom wall of the deep groove, and the other end of the guide rod (392) is equipped with a touch head (399); The upper and lower surfaces of the rod-penetrating ring (391) are provided with a plurality of filling grooves, a seventh spring (395) is fixed on the inner bottom wall of the filling groove, a vertical rod (396) is fixed to one end of the seventh spring (395), a bell bowl (397) is mounted on the top of the vertical rod (396), and a bell hammer (398) matched with the bell bowl (397) is fixed to the upper surface of one of the limiting rings (393) and the lower surface of the other limiting ring (393).

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