A transposition tool for longitudinal seam welding of a power transmission steel pipe pole cross arm and a transposition method thereof

Abstract

This invention proposes a positioning fixture and method for welding the longitudinal seam of a crossarm on a power transmission and transformation steel pipe pole, relating to the field of welding fixture technology. The fixture includes a base, a control box, a tilting control frame, a docking angle adjustment frame, a detection suspension, and end clamps. One end of the base is the control box, and the tilting control frame and docking angle adjustment frame are symmetrically and vertically arranged on the base. End clamps are provided on opposite sides of the tilting control frame and the docking angle adjustment frame, with the crossarm to be welded between the two end clamps. This invention provides a positioning fixture for welding the longitudinal seam of a crossarm on a power transmission and transformation steel pipe pole, achieving full-position transformation and precise positioning of the crossarm during the welding process through the coordinated operation of the tilting control frame and the docking angle adjustment frame.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, specifically to a welding displacement fixture and method for longitudinal seam welding of crossarms of power transmission and transformation steel pipe poles. Background Technology

[0002] As a crucial load-bearing component in power transmission lines, the crossarm of a power transmission and transformation steel pipe pole typically consists of an upper horizontal plate and a lower inclined plate, connected by a longitudinal weld. The quality of the longitudinal weld directly affects the structural strength and service life of the entire steel pipe pole. In existing technologies, longitudinal welds on crossarms with specific angular structures are usually performed manually by flipping or using a simple flipping device combined with manual welding. This method has several drawbacks: Firstly, after completing the longitudinal weld on one side of the horizontal plate, the crossarm needs to be flipped 180 degrees to weld the inclined plate on the other side. Since the inclined plate has a fixed angle relative to the horizontal plane, this angle causes the welding surface to tilt after flipping, making it difficult to ensure the welding torch is always in the optimal flat welding position, severely impacting weld quality and efficiency. Secondly, existing clamping devices are mostly step-by-step operations, requiring separate internal support, external clamping, and pressing of the crossarm. The clamping process is cumbersome and positioning accuracy is difficult to guarantee. During the flipping process, the workpiece is prone to displacement, further affecting welding accuracy. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and propose a welding displacement fixture and method for longitudinal seam welding of crossarms of power transmission and transformation steel pipe poles. This special fixture can automatically complete the double-sided displacement of the crossarm and always keep the welding working surface horizontal, which is of great significance for improving the welding quality and production efficiency of crossarms of power transmission and transformation steel pipe poles.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a welding displacement fixture for longitudinal seams of crossarms of power transmission and transformation steel pipe poles, used for complete welding of the longitudinal seams of the upper horizontal plate and the lower inclined plate of the crossarm, comprising: a fixture base, a control box, a flipping control frame, a docking angle adjustment frame, a detection suspension, and end clamps. One end of the fixture base is the control box, and the flipping control frame and the docking angle adjustment frame are symmetrically and vertically arranged on the fixture base. End clamps are provided on opposite sides of the flipping control frame and the docking angle adjustment frame, and the crossarm to be welded is located between the two end clamps. A rectangular detection suspension is fixedly connected between the upper ends of the flipping control frame and the docking angle adjustment frame. The flipping control frame is equipped with a flipping control component, which drives the corresponding end clamp to flip the crossarm by 10 degrees and 20 degrees. The docking angle adjustment frame is equipped with a docking angle adjustment component, which drives the corresponding end clamp to vertically displace the corresponding end of the crossarm, keeping the upper welding surface of the crossarm always horizontal. The end clamp is equipped with a quick-clamping coordination component, which is used to quickly and accurately clamp one end of the crossarm. The detection suspension is equipped with a level detection component, which measures the distance to two points on the upper surface of the crossarm, determines the level status based on the difference, and feeds it back to the controller in the control box for processing. The docking angle adjustment component performs the coordinated operation.

[0005] Furthermore, a reinforcing base is provided vertically upward on the upper surface of the tooling base at the extension line between the flip control frame and the docking angle adjustment frame. The upper end of the reinforcing base is an inclined structure with left and right sides. The roots of the flip control frame and the docking angle adjustment frame are embedded in the reinforcing base.

[0006] Furthermore, the flipping control assembly includes a fixed end shaft, a support, a worm gear, a limit sensor receiver, a flipping screw, a flipping motor, a limit frame, and a limit sensor transmitter. The fixed end shaft is vertically mounted on the flipping control frame at the position corresponding to the end clamp. A worm gear is fixedly connected to the end of the fixed end shaft away from the end clamp. A flipping screw is horizontally mounted on the flipping control frame below the worm gear. One end of the flipping screw is fixedly connected to the rotating shaft of the flipping motor via a coupling. The flipping screw meshes with the worm gear. A fixed... A horizontally placed L-shaped limiting frame is installed. A limiting sensor transmitter is provided on the inner side of the lower end of the limiting frame. The limiting sensor transmitter is close to the worm gear. Two symmetrical limiting sensor receivers are provided on the outer wall of the worm gear near the edge. When the limiting sensor transmitter corresponds to the two limiting sensor receivers, it corresponds to the 0-degree and 180-degree states of the end clamp. The fixed end shaft is surrounded by a support piece at one end of the end clamp. The root of the support piece is a cylindrical structure and is fixed on the flip control frame. The main body of the support piece is a semi-circular arc structure with an upward opening.

[0007] Furthermore, the docking angle adjustment assembly includes an angle adjustment hole, a movable end shaft, a baffle, a lifting sleeve, a lifting frame, an angle adjustment motor, and an angle adjustment screw. The docking angle adjustment frame has vertically distributed oval-shaped angle adjustment holes at the installation positions of the end clamps. The movable end shaft is horizontally installed in the angle adjustment holes. The docking angle adjustment frame outside the angle adjustment holes is fitted with a lifting sleeve. The two ends of the movable end shaft pass through the two sides of the lifting sleeve, and baffles are respectively provided near the two ends of the movable end shaft. The docking angle adjustment frame on one side of the lifting sleeve is vertically provided with a lifting frame. The angle adjustment screw is vertically rotatably installed in the lifting frame. The angle adjustment screw is vertically rotatably screwed to the lifting sleeve. The upper end of the lifting frame is provided with an angle adjustment motor for driving the angle adjustment screw to rotate.

[0008] Furthermore, the docking angle adjustment assembly also includes a locking brake component, which consists of a locking brake plate, a brake sleeve, a locking brake cylinder, and a locking brake block. The locking brake component is fixedly installed on the side wall of the lifting sleeve block opposite to the lifting frame. A locking brake plate is horizontally inserted through the locking brake component, and one end of the locking brake plate is slidably tangent to the lifting sleeve block. Brake sleeves are vertically fixed at both ends of the locking brake plate, and the ends of the brake sleeves are inserted into corresponding baffles. The side wall of the locking brake plate away from the lifting sleeve block has vertically spaced anti-slip grooves. A locking brake cylinder is vertically installed in the outer side wall of the locking brake component. The piston rod end of the locking brake cylinder is vertically fixedly connected to the locking brake block facing the locking brake plate. The inner end of the locking brake block is opposite to the anti-slip groove surface of the outer end of the locking brake plate. When the piston rod of the locking brake cylinder moves inward, the locking brake block contacts the locking brake plate. The position of the locking brake plate is fixed, that is, the position of the movable end shaft is fixed.

[0009] Furthermore, welding equipment is installed at the upper end of the testing suspension. The horizontal testing component includes a side groove, a testing crossbar, an electromagnetic plate, and a distance sensor. Side grooves are formed from the middle to one side in the side walls of the left and right ends of the inner frame of the testing suspension. The testing crossbar is slidably installed between the two side grooves. A distance sensor is provided at the bottom of the testing crossbar near the two ends of the crossarm. An electromagnetic plate is provided in the long side wall of the inner frame of the testing suspension near the side groove. The testing crossbar is made of magnet. When the electromagnetic plate is energized, its magnetism is different from that of the testing crossbar. During testing, the testing crossbar is in the middle of the testing suspension. When not testing, the electromagnetic plate is attached to the testing crossbar.

[0010] Furthermore, the quick-clamping coordination assembly includes a rotary connector, a central hole, a clamping power frame, a clamping cylinder, a rocker arm, a movable waist hole, an inner pusher, an inner connecting shaft, an inner pusher tongue block, a connecting arm, a clamping arm, a clamping head, a clamping protrusion, an interlocking component, an interlocking rod, an interlocking pressure tongue, an interlocking spring, a pressure counter, a directional sleeve, a pressure guide rod, a pressure connecting block, a pressure plate, a pressure spring, a handle, and a control button. A rotary connector is vertically fixed outwards at the center of the end clamp. The rotary connector on the end clamp at the flip control frame is connected to the fixed end shaft via a universal joint. The end clamp at the docking angle adjustment frame... The rotating connector on the clamp is connected to the movable end shaft via a universal joint. The end clamp has through holes at both its upper and lower ends. A rocker arm is rotatably connected to the lower end of the through holes via a rotating shaft, which is positioned in the middle of the rocker arm. A clamping power frame is fixedly installed on the end clamp on the side of the rotating connector below the rocker arm. A clamping cylinder is rotatably installed in the clamping power frame. The piston rod of the clamping cylinder is rotatably connected to the lower end of the rocker arm via a rotating shaft. An inner pusher is slidably provided in the end clamp towards the side where the crossarm is located. The end of the inner pusher near the crossarm is an inner pusher tongue block, and the outer edge of the top of the inner pusher tongue block has a chamfered structure. An inner connecting shaft is horizontally fixed in the concave cavity at the other end of the inner pusher. A movable waist hole is provided at the corresponding position of the upper end of the rocker arm. The inner connecting shaft is slidably placed in the movable waist hole. When the piston rod of the clamping cylinder retracts, the rocker arm rotates, driving the inner pusher to move to one side of the crossarm, and the inner pusher tongue is inserted into the crossarm cavity. The left and right sides of the inner pusher are respectively rotatably connected to connecting arms by pins. The left and right sides of the end clamp are respectively rotatably connected to clamping arms by pins at the end position. The end of the connecting arm is rotatably connected to the inner end of the clamping arm. The outer end of the clamping arm is an inwardly folded clamping head. The inner arc surface of the clamping head has a vertical... The distributed clamping protrusions, while the inner pusher moves into the crossarm, the connecting arm supports the inner end of the clamping arm, and the clamping head end of the clamping arm moves inward to hug the outer wall of the side plate of the crossarm, cooperating with the inner pusher tongue block to achieve initial clamping of the crossarm; the upper end of the inner pusher passes through the central hole and is fixedly connected to the interlocking member, and the upper middle part of the interlocking member is provided with an interlocking rod that slides vertically to one side of the crossarm. The end of the interlocking rod is fixedly connected to the interlocking pressure tongue, and the bottom of the end of the interlocking pressure tongue is beveled. The other end of the interlocking rod is screwed with a bolt stop, and an interlocking spring is fitted on the interlocking rod. The interlocking spring provides the interlocking pressure tongue with the thrust to move to one side of the crossarm;A counter-pressure frame is provided at the end of the end clamp above the inner push tongue block. Symmetrical counter-pressure guide rods are vertically arranged within the counter-pressure frame. A counter-pressure connecting block is fixedly connected to the upper ends of the counter-pressure guide rods. A corresponding inclined surface is formed in the middle of the counter-pressure connecting block towards the interlocking push tongue side. A counter-pressure plate is fixedly connected to the lower ends of the counter-pressure guide rods. The side of the counter-pressure plate closest to the crossarm has an inclined structure. A counter-pressure spring is fitted onto the counter-pressure guide rods, providing a constant downward thrust to the counter-pressure plate. The counter-pressure plate presses against the horizontal plate of the crossarm. At the upper end, a directional sleeve is provided on the upper end of the pressure frame. The interlocking pressure tongue slides vertically through the directional sleeve. As the inner pusher moves towards the crossarm, the inclined surface at the bottom of the interlocking pressure tongue contacts and presses against the upper inclined surface of the pressure block. The pressure plate is in a further contact and pressing state with the upper horizontal plate of the crossarm. Together with the inner pusher and the clamping arm, the crossarm is fixed at three points. An inverted U-shaped handle is provided at the upper outer end of the end clamp. A control button for controlling the clamping cylinder is provided on the inner side of the handle.

[0011] Furthermore, the initial clamping state of the crossarm is with the horizontal plate facing upwards and the inclined plate facing downwards. The end of the horizontal plate of the crossarm is clamped between the pressure plate and the inner pusher tongue block. The movable end shaft is at the lowest point of the angle adjustment hole. The upper horizontal plate of the crossarm is in a default horizontal state. The welding equipment can directly perform welding. The horizontal detection component can also intervene for pre-inspection before welding. After the welding of the two side seams of the horizontal plate of the crossarm is completed, the flip control component works to drive the crossarm to flip 180 degrees. At this time, the upper end of the crossarm is an inclined plate. The horizontal detection component intervenes to perform horizontal detection. The docking angle adjustment component works in conjunction with the detection data to drive the end clamp of one end of the docking angle adjustment frame to move upwards until the inclined plate of the crossarm is in a horizontal state. The welding equipment then welds the two side seams of the inclined plate of the crossarm.

[0012] A method for repositioning a displacement fixture for welding the longitudinal seam of a crossarm on a power transmission and transformation steel pipe pole includes the following steps: Step 1, Initial clamping and positioning: Operate the quick clamping and coordinating components to fix the crossarm at three points through the inner pusher tongue, clamping arm and pressure plate, so that the upper horizontal plate of the crossarm faces upward and the lower inclined plate faces downward, and the movable end shaft on the docking angle adjustment frame is at the lowest point of the angle adjustment hole, ensuring that the upper horizontal plate of the crossarm is in the initial horizontal state. Step 2, First longitudinal seam welding: By checking the level detection component on the suspension or directly confirming the level status of the horizontal plate at the upper end of the crossarm, the longitudinal seams on both sides of the horizontal plate at the upper end of the crossarm are welded using welding equipment installed on the detection suspension. Step 3, workpiece flipping: After completing step 2, the flipping control component works. Through the meshing of the worm gear and the flipping screw, it drives the end clamp and crossarm connected to the fixed end shaft to rotate 180 degrees around the horizontal axis, so that the upper end of the crossarm becomes the inclined plate to be welded. Step 4, Second Angle Adjustment and Leveling: Activate the horizontal detection component, measure the distance between it and two points on the upper inclined plate of the crossarm, and calculate the difference. The controller in the control box controls the docking angle adjustment component to work according to the difference. The docking angle adjustment component drives the movable end shaft to move vertically in the angle adjustment hole, driving the corresponding end of the crossarm to rise and fall until the inclined plate at the upper end of the crossarm is adjusted to a horizontal state. Step 5, Second longitudinal seam welding: Maintaining the posture adjusted in Step 4, use welding equipment to weld the longitudinal seams on both sides of the upper inclined plate of the crossarm.

[0013] Compared with existing technologies, the new displacement fixture and method for welding the longitudinal seam of the crossarm of a power transmission and transformation steel pipe pole have the following advantages: The present invention provides a welding displacement fixture for the longitudinal seam of the crossarm of a power transmission and transformation steel pipe pole. Through the coordinated cooperation of the flipping control frame and the docking angle adjustment frame, the crossarm can achieve full posture transformation and precise positioning during the welding process.

[0014] First, the flipping control component adopts a self-locking worm gear transmission structure consisting of a worm gear and a flipping lead screw. With the closed-loop control of the limit sensor transmitter and the limit sensor receiver, it can drive the crossarm to flip precisely at 0 degrees and 180 degrees, and automatically lock after flipping into place, providing a stable posture basis for subsequent welding.

[0015] Secondly, the docking angle adjustment component drives the movable end shaft to move vertically within the angle adjustment hole through the cooperation of the lifting sleeve block and the angle adjustment screw, thereby driving the corresponding end of the crossarm to rise and fall, achieving precise compensation of the inclined plate angle; after the locking brake is adjusted to the correct position, it locks the movable end shaft, effectively preventing displacement due to force during welding and ensuring that the horizontal state of the welding work surface remains stable.

[0016] In addition, the horizontal detection component installed in the inspection suspension adopts a sliding detection crossbar and a distance sensor. When not in the inspection state, the detection crossbar is attracted and fixed by an electromagnetic plate to avoid interfering with the welding operation. During inspection, the detection crossbar slides down to the working position by gravity. The horizontal status is fed back in real time by measuring the distance difference between two points on the upper end face of the crossbar. It forms a closed loop control with the docking angle adjustment component, realizing the automatic leveling function of the tilt plate, which greatly improves the accuracy of welding positioning and the level of automation.

[0017] Finally, the quick-clamping coordination component in the end fixture is driven by a single clamping cylinder. Through the linkage of the rocker arm, inner pusher, connecting arm, and interlocking components, it simultaneously completes the inner support positioning of the inner pusher tongue block, the outer clamping of the clamping arm, and the upper pressure fixing of the pressure plate. This achieves three-point coordinated clamping of inner support, outer clamping, and upper pressure, resulting in a fast and accurate clamping process with uniform clamping force distribution, ensuring the absolute stability of the crossarm during flipping and welding. The vertical clamping protrusions on the inner arc surface of the clamping head increase the friction with the side plate of the crossarm, further improving clamping reliability. The inverted U-shaped handle at the top of the end fixture has a control button on its inner side, allowing the operator to perform clamping and releasing operations with one hand, significantly improving the convenience of workpiece clamping. The reinforcing base on the tooling base uses a root-embedded method to fix the flipping control frame and the docking angle adjustment frame, effectively dispersing the vibration and torque generated during welding, enhancing the rigidity of the overall structure, and providing reliable support for high-precision displacement. This tooling can complete the welding of the longitudinal seams on both sides of the horizontal and inclined plates of the crossarm with a single clamping, without the need for manual secondary adjustment, which greatly improves welding efficiency and quality stability. It can be widely used in the field of automated welding production of crossarms for power transmission and transformation steel pipe poles.

[0018] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the crossarm in the upward separation state of the present invention. Figure 5 This is a three-dimensional structural diagram of the end clamp portion of the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the end clamp of the present invention; Figure 7 This is a schematic diagram of the rocker arm and the inner pusher part of the present invention in a separated state. Figure 8 This is a three-dimensional structural diagram of the docking angle adjustment frame of the present invention; Figure 9 This is a schematic diagram of the disassembled structure of the docking angle adjustment frame of the present invention; Figure 10 This is a three-dimensional structural diagram of the flip control frame portion of the present invention; Figure 11 This is a schematic diagram of the disassembled structure of the flip control frame of the present invention; Figure 12 This is a schematic diagram of the structure of the flipped state of the present invention.

[0020] In the picture: 1. Tooling base; 101. Reinforcing base; 2. Control box; 3. Tilting control frame; 301. Fixed end shaft; 302. Support piece; 303. Worm gear; 3031. Limit sensor receiver; 304. Tilting lead screw; 305. Tilting motor; 306. Limit frame; 3061. Limit sensor transmitter; 4. Angle adjustment bracket; 401. Angle adjustment hole; 402. Movable end shaft; 4021. Baffle; 403. Lifting sleeve block; 404. Lifting frame; 4041. Angle adjustment motor; 4042. Angle adjustment screw; 405. Locking brake component; 4051. Locking brake plate; 4052. Brake sleeve; 4053. Locking brake cylinder; 4054. Locking brake block; 5. Inspect the suspension; 501. Side groove; 502. Inspect the crossbar; 503. Electromagnetic plate; 504. Distance sensor; 6. End clamp; 601. Rotary connector; 602. Center hole; 603. Clamping power frame; 6031. Clamping cylinder; 604. Rocker arm; 6041. Movable waist hole; 605. Internal pusher; 6051. Internal connecting shaft; 6052. Internal pusher tongue block; 6053. Connecting arm; 606. Clamping arm; 6061. Clamping head; 6062. Clamping protrusion; 607. Interlocking component; 6071. Interlocking rod; 6072. Interlocking pressure tongue; 6073. Interlocking spring; 608. Counterweight frame; 6081. Orienting sleeve; 6082. Counterweight guide rod; 6083. Counterweight connecting block; 6084. Counterweight plate; 6085. Counterweight spring; 609. Handle; 6091. Control button; 7. Crossbeam. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-12The present invention provides the following implementation scheme: a welding displacement fixture for longitudinal seam welding of a crossarm of a power transmission and transformation steel pipe pole, used for complete welding of the longitudinal seam of the upper horizontal plate and the lower inclined plate of the crossarm 7, comprising: a fixture base 1, a control box 2, a flip control frame 3, a docking angle adjustment frame 4, a detection suspension 5, and an end clamp 6. One end of the fixture base 1 is the control box 2. The flip control frame 3 and the docking angle adjustment frame 4 are symmetrically and vertically arranged on the fixture base 1. An end clamp 6 is provided on the opposite side of the flip control frame 3 and the docking angle adjustment frame 4. The crossarm 7 with the longitudinal seam to be welded is located between the two end clamps 6. A rectangular detection suspension 5 is fixedly connected between the upper ends of the flip control frame 3 and the docking angle adjustment frame 4. The flip control frame 3 is equipped with a flip control component, which drives the corresponding end clamp 6 to flip the crossarm 7 by 0 degrees and 180 degrees. The docking angle adjustment frame 4 is equipped with a docking angle adjustment component, which drives the corresponding end clamp 6 to vertically displace the corresponding end of the crossarm 7, keeping the upper welding surface of the crossarm 7 always horizontal. The end clamp 6 is equipped with a quick clamping coordination component, which is used to quickly and accurately clamp one end of the crossarm 7. The detection suspension 5 is equipped with a level detection component, which measures the distance to two points on the upper surface of the crossarm 7, and determines the level by the difference, feeding it back to the controller in the control box 2 for processing. The docking angle adjustment component performs the coordinated operation.

[0023] Among them, a reinforcing base 101 is provided vertically upward at the extension line between the flip control frame 3 and the docking angle adjustment frame 4 on the upper end surface of the tooling base 1. The upper end of the reinforcing base 101 is a sloping structure with inclined sides on the left and right. The roots of the flip control frame 3 and the docking angle adjustment frame 4 are embedded in the reinforcing base 101.

[0024] The flip control assembly includes a fixed end shaft 301, a support 302, a worm gear 303, a limit sensor receiver 3031, a flip screw 304, a flip motor 305, a limit frame 306, and a limit sensor transmitter 3061. The fixed end shaft 301 is vertically mounted on the flip control frame 3 at the position corresponding to the end clamp 6. The end of the fixed end shaft 301 away from the end clamp 6 is fixedly connected to the worm gear 303. The flip screw 304 is horizontally mounted on the flip control frame 3 below the worm gear 303. One end of the flip screw 304 is fixedly connected to the shaft of the flip motor 305 via a coupling. The flip screw 304 meshes with the worm gear 303. The flip control frame 306 is located above the worm gear 303. A horizontally placed L-shaped limiting frame 306 is fixedly installed on the side wall. A limiting sensor transmitter 3061 is provided on the inner side of the lower end of the limiting frame 306. The limiting sensor transmitter 3061 is close to the worm gear 303. Two symmetrical limiting sensor receivers 3031 are provided on the outer side wall of the worm gear 303 near the edge. When the limiting sensor transmitter 3061 corresponds to the two limiting sensor receivers 3031 respectively, it corresponds to the 0-degree and 180-degree states of the end clamp 6. A support 302 is wrapped around one end of the fixed end shaft 301 corresponding to the end clamp 6. The root of the support 302 is a cylindrical structure and is fixed on the flip control frame 3. The main body of the support 302 is a semi-circular arc structure with the opening facing upward.

[0025] The docking angle adjustment assembly includes an angle adjustment hole 401, a movable end shaft 402, a baffle 4021, a lifting sleeve 403, a lifting frame 404, an angle adjustment motor 4041, and an angle adjustment screw 4042. The docking angle adjustment frame 4 has vertically distributed oval-shaped angle adjustment holes 401 at the installation positions corresponding to the end clamps 6. The movable end shaft 402 is horizontally installed in the angle adjustment hole 401. The lifting sleeve 403 is fitted onto the docking angle adjustment frame 4 outside the angle adjustment hole 401. Both ends of the shaft 402 pass through the two sides of the lifting sleeve block 403, and the movable end of the shaft 402 is provided with baffles 4021 near the two ends. A lifting frame 404 is vertically provided on the docking angle adjustment frame 4 on one side of the lifting sleeve block 403. An angle adjustment screw 4042 is vertically rotatably installed in the lifting frame 404. The angle adjustment screw 4042 is screwed to the lifting sleeve block 403 in a vertical rotation. An angle adjustment motor 4041 for driving the angle adjustment screw 4042 to rotate is provided at the upper end of the lifting frame 404.

[0026] The docking angle adjustment assembly also includes a locking brake component 405, which consists of a locking brake plate 4051, a brake sleeve 4052, a locking brake cylinder 4053, and a locking brake block 4054. The locking brake component 405 is fixedly installed on the side wall of the lifting sleeve block 403 opposite to the lifting frame 404. The locking brake plate 4051 is horizontally inserted through the locking brake component 405. One end of the locking brake plate 4051 is slidably tangential to the lifting sleeve block 403. The two ends of the locking brake plate 4051 are respectively vertically fixed with brake sleeves 4052. The ends of the brake sleeves 4052 are inserted into the corresponding baffles 4054. In section 21, the side wall of the locking brake plate 4051 away from the lifting sleeve block 403 is provided with vertically spaced anti-slip grooves. The outer side wall of the locking brake component 405 is vertically provided with a locking brake cylinder 4053. The piston rod end of the locking brake cylinder 4053 is vertically and fixedly connected to the locking brake block 4054 facing the locking brake plate 4051. The inner end of the locking brake block 4054 is opposite to the anti-slip groove surface of the outer end of the locking brake plate 4051. When the piston rod of the locking brake cylinder 4053 moves inward, the locking brake block 4054 comes into contact with the locking brake plate 4051. The position of the locking brake plate 4051 is fixed, that is, the position of the movable end shaft 402 is fixed.

[0027] The upper end of the test suspension 5 is equipped with welding equipment. The horizontal test assembly includes a side groove 501, a test crossbar 502, an electromagnetic plate 503, and a distance sensor 504. The side grooves 501 are opened from the middle to one side in the side walls of the left and right ends of the inner frame of the test suspension 5. The test crossbar 502 is slidably installed between the two side grooves 501. The distance sensor 504 is provided at the bottom of the test crossbar 502, corresponding to the position of the crossarm 7 near both ends. The electromagnetic plate 503 is provided in the long side wall of the inner frame of the test suspension 5 near the side grooves 501. The test crossbar 502 is made of magnet. When the electromagnetic plate 503 is energized, its magnetism is different from that of the test crossbar 502. During the test, the test crossbar 502 is in the middle of the test suspension 5. When not being tested, the electromagnetic plate 503 is attached to the test crossbar 502.

[0028] The quick-clamping coordination component includes a rotary connector 601, a central hole 602, a clamping power frame 603, a clamping cylinder 6031, a rocker arm 604, a movable waist hole 6041, an inner pusher 605, an inner connecting shaft 6051, an inner pusher tongue block 6052, a connecting arm 6053, a clamping arm 606, a clamping head 6061, a clamping protrusion 6062, an interlocking component 607, an interlocking rod 6071, an interlocking pressure tongue 6072, an interlocking spring 6073, a counter-pressure frame 608, a directional sleeve 6081, a counter-pressure guide rod 6082, a counter-pressure connecting block 6083, a counter-pressure plate 6084, a counter-pressure spring 6085, a handle 609, and a control button 6091. The middle part of the end clamp 6 is vertical. A rotary connector 601 is fixedly provided outwards. The rotary connector 601 on the end clamp 6 at the flip control frame 3 is connected to the fixed end shaft 301 via a universal joint. The rotary connector 601 on the end clamp 6 at the docking angle adjustment frame 4 is connected to the movable end shaft 402 via a universal joint. A central hole 602 is provided through the upper and lower ends of the end clamp 6. A rocker arm 604 is rotatably connected to the lower end of the central hole 602 via a rotating shaft. The rotating shaft is located in the middle of the rocker arm 604. A clamping power frame 603 is fixedly installed on the end clamp 6 on one side of the rotary connector 601 below the rocker arm 604. A clamping cylinder 6031 is rotatably installed in the clamping power frame 603. The movable end shaft of the clamping cylinder 6031 is... The end of the plunger is rotatably connected to the lower end of the rocker arm 604 via a rotating shaft. An inner pusher 605 is slidably provided in the end clamp 6 facing the side where the crossarm 7 is located. The end of the inner pusher 605 near the crossarm 7 is an inner pusher tongue 6052. The outer edge of the top of the inner pusher tongue 6052 is chamfered. The inner connecting shaft 6051 is horizontally fixedly installed in the concave cavity of the other end of the inner pusher 605. A movable waist hole 6041 is opened at the corresponding position of the upper end of the rocker arm 604. The inner connecting shaft 6051 is slidably placed in the movable waist hole 6041. When the piston rod of the clamping cylinder 6031 retracts, the rocker arm 604 rotates, driving the inner pusher 605 to move towards the side of the crossarm 7, and the inner pusher tongue 6052 is inserted into the cavity of the crossarm 7. The left and right sides of the inner pusher 605 are respectively connected to the connecting arm 6053 by a pin. The left and right sides of the end position of the end clamp 6 are respectively connected to the clamping arm 606 by a pin. The end of the connecting arm 6053 is rotatably connected to the inner end of the clamping arm 606. The outer end of the clamping arm 606 is an inwardly buckled clamping head 6061. The inner arc surface of the clamping head 6061 is provided with vertically distributed clamping protrusions 6062. While the inner pusher 605 moves into the crossbeam 7, the connecting arm 6053 supports the inner end of the clamping arm 606. The clamping head 6061 of the clamping arm 606 moves inward and hugs the outer wall of the side plate of the crossbeam 7. The inner pusher tongue 6052 cooperates to achieve initial clamping of the crossbeam 7.The upper end of the inner pusher 605 passes through the central hole 602 and is fixedly connected to the interlocking member 607. The upper middle part of the interlocking member 607 is slidably provided with an interlocking rod 6071 vertically toward the crossarm 7. The end of the interlocking rod 6071 is fixedly connected to the interlocking tongue 6072. The bottom of the end of the interlocking tongue 6072 is beveled. The other end of the interlocking rod 6071 is screwed with a bolt stop. An interlocking spring 6073 is fitted on the interlocking rod 6071. The interlocking spring 6073 is the interlocking spring. Tongue 6072 provides a thrust for moving towards the crossarm 7; a counterweight frame 608 is provided at the end of the end clamp 6 above the inner push tongue block 6052, and symmetrical counterweight guide rods 6082 are vertically arranged in the counterweight frame 608. A counterweight connecting block 6083 is fixedly connected between the upper ends of the counterweight guide rods 6082. The middle part of the counterweight connecting block 6083 has a corresponding inclined surface on the side of the interlocking tongue 6072. A counterweight guide rod 6082 is fixedly connected between the lower ends of the counterweight guide rods 6082. The pressure plate 6084 has an inclined structure on the side near the crossarm 7. A pressure spring 6085 is fitted on the pressure guide rod 6082, which provides a constant downward thrust to the pressure plate 6084. The pressure plate 6084 presses against the upper end of the horizontal plate of the crossarm 7. The upper end of the pressure frame 608 is provided with a directional sleeve 6081. The interlocking pressure tongue 6072 slides vertically through the directional sleeve 6081. The inner pusher 605 moves towards the crossarm 7 while... The inclined surface at the bottom of the interlocking pressure tongue 6072 contacts and presses against the upper inclined surface of the counter-pressure block 6083, and the counter-pressure plate 6084 is in a further contact and pressing state with the upper horizontal plate of the crossarm 7. Together with the inner push tongue block 6052 and the clamping arm 606, the crossarm 7 is fixed at three points. An inverted U-shaped lever 609 is provided at the upper outer end of the end clamp 6, and a control button 6091 for controlling the clamping cylinder 6031 is provided on the inner side of the lever 609.

[0029] In the initial clamping state of the crossarm 7, the horizontal plate faces upward and the inclined plate faces downward. The end of the horizontal plate of the crossarm 7 is clamped between the pressure plate 6084 and the inner push tongue block 6052. The movable end shaft 402 is at the lowest point of the angle adjustment hole 401. The upper horizontal plate of the crossarm 7 is in a default horizontal state, and the welding equipment can directly perform welding. The horizontal detection component can also intervene for pre-inspection before welding. After the welding of the two side seams of the horizontal plate of the crossarm 7 is completed, the flip control component works to drive the crossarm 7 to flip 180 degrees. At this time, the upper end of the crossarm 7 is an inclined plate. The horizontal detection component intervenes to perform horizontal detection. The docking angle adjustment component works in conjunction with the detection data to drive the end clamp 6 at one end of the docking angle adjustment frame 4 to move upward until the inclined plate of the crossarm 7 is in a horizontal state. The welding equipment then welds the two side seams of the inclined plate of the crossarm 7.

[0030] The following provides further explanation and illustration of the functions and effects of each structure mentioned above, to facilitate a better understanding of the technical solution by those skilled in the art: The tooling base 1 serves as the foundation for the entire system. A control box 2 is installed at one end for centralized control. Symmetrically vertically mounted tilting control frame 3 and docking angle adjustment frame 4 on the base constitute the main displacement support structure. A rectangular detection suspension 5 is fixedly connected between the upper ends of the two frames, used to install welding equipment and integrate detection functions. To enhance the stability of the overall structure, a reinforcing base 101 is vertically installed on the upper surface of the tooling base 1 at the intersection of the extended lines of the two frames. The upper end of this reinforcing base has a double-sided inclined slope structure. The roots of the tilting control frame 3 and docking angle adjustment frame 4 are pre-embedded in this reinforcing base 101. This embedded fixing method effectively disperses the vibration and torque generated during welding, ensuring structural rigidity during high-precision displacement.

[0031] The flip control assembly on the flip control frame 3 is used to achieve a 180-degree flip of the crossarm 7. Its core transmission structure is a self-locking worm gear pair consisting of a fixed end shaft 301, a worm gear 303, and a flip screw 304. The flip motor 305 drives the flip screw 304 to rotate, which in turn drives the worm gear 303 and the fixed end shaft 301 fixedly connected to it to rotate through meshing transmission, thereby driving the end clamp 6 to carry the crossarm 7 for precise flipping. To ensure precise control of the flip angle, two limit sensor receivers 3031 are symmetrically provided on the outer wall of the worm gear 303. The limit frame 306 that cooperates with it is fixedly installed on the flip control frame 3. The lower inner side of the limit sensor transmitter 3061 is provided. When the worm gear 303 rotates to 0 degrees or 180 degrees, the limit sensor transmitter 3061 is exactly aligned with the corresponding limit sensor receiver 3031, generating a positioning signal that is fed back to the control box 2 to achieve closed-loop control of the flip position. The fixed end shaft 301 is surrounded by a support member 302. The root of the support member is cylindrical and fixed on the flipping control frame 3. The main body is a semi-circular arc structure with an upward opening. It can provide auxiliary support for the end clamp 6 and the crossbeam 7 during workpiece clamping and flipping, and prevent the cantilever structure from sagging and deforming.

[0032] The docking angle adjustment assembly on the docking angle adjustment frame 4 is used to achieve angle compensation during welding of the second side of the crossarm 7. Its core structure is the cooperation between the movable end shaft 402 and the vertical lifting mechanism. The docking angle adjustment frame 4 has vertically distributed oval angle adjustment holes 401. The movable end shaft 402 is horizontally installed in the hole and can slide vertically along the hole. The movable end shaft 402 is surrounded by a lifting sleeve 403. The lifting sleeve is screwed to the angle adjustment screw 4042 in the vertically set lifting frame 404. When the angle adjustment motor 4041 drives the screw to rotate, the lifting sleeve 403 drives the movable end shaft 402 to move up and down in the angle adjustment hole 401, thereby driving the corresponding end of the crossarm 7 to rise and fall, realizing the angle adjustment of the tilt plate. To maintain positional stability after adjustment, a locking brake component 405 is also installed on the lifting sleeve block 403. This locking brake component consists of a locking brake plate 4051, a brake sleeve 4052, a locking brake cylinder 4053, and a locking brake block 4054. The brake sleeves 4052, which are vertically fixed at both ends of the locking brake plate 4051, are inserted into the retaining plate 4021 of the movable end shaft 402. When the locking brake cylinder 4053 pushes the locking brake block 4054 to press against the anti-slip groove at the outer end of the locking brake plate 4051, the locking brake plate 4051 is locked, thereby locking the position of the movable end shaft 402 through the brake sleeve 4052, preventing displacement due to force during welding.

[0033] The horizontal detection component installed in the detection suspension 5 is used to monitor the horizontal state of the upper surface of the crossarm 7 in real time. This component includes a detection crossbar 502 that can slide in the side groove 501. Distance sensors 504 are installed at the bottom of the detection crossbar 502 corresponding to the two ends of the crossarm 7. An electromagnetic plate 503 is installed in the long side wall of the detection suspension 5. The detection crossbar 502 is made of magnet. In the non-detection state, the electromagnetic plate 503 is energized to generate a magnetism that is opposite to that of the detection crossbar 502, so that the two are attracted and fixed to avoid interference with the welding operation. When horizontal detection is required, the electromagnetic plate 503 is de-energized and demagnetized. The detection crossbar 502 slides down to the middle of the suspension by gravity. The distance sensors 504 measure the distance to the two points on the upper surface of the crossarm 7 respectively. The horizontal state of the workpiece is determined by calculating the difference and the data is fed back to the controller in the control box 2. The controller instructs the docking angle adjustment component to work together to achieve automatic leveling.

[0034] The quick-clamping coordination component in the end clamp 6 enables rapid and precise clamping and multi-point fixation of the end of the crossarm 7. This component, through a clever linkage mechanism, requires only a single power source to complete the triple actions of internal support, external clamping, and pressing. The clamping cylinder 6031 serves as the power source. When its piston rod retracts, it drives the rocker arm 604 to rotate around the lower shaft of the central hole 602. The movable waist hole 6041 at the upper end of the rocker arm 604, via the inner connecting shaft 6051, drives the inner pusher 605 to move towards one side of the crossarm 7, causing the inner pusher tongue 6052 to insert into the end cavity of the crossarm 7, achieving internal support positioning. Simultaneously, the connecting arms 6053 rotatably connected to both sides of the inner pusher 605 move inward, supporting the inner end of the outer clamping arm 606, causing the clamping arm 606 to rotate around the pin. The clamping head 6061 clamps inward against the outer wall of the side plate of the crossarm 7. The vertical clamping protrusion on the inner arc surface of the clamping head... Strip 6062 increases friction and clamping stability. The interlocking rod 6071 and interlocking tongue 6072, fixedly connected to the upper end of the inner pusher 605 via interlocking element 607, move inward accordingly. The beveled surface at the bottom of the interlocking tongue 6072 contacts the beveled surface at the upper end of the counter-pressure block 6083, generating pressure. This forces the counter-pressure block 6083 to overcome the elastic force of the counter-pressure spring 6085, causing the counter-pressure guide rod 6082 and counter-pressure plate 6084 to rise. After the interlocking tongue 6072 passes the counter-pressure block 6083, the counter-pressure plate 6084 presses down under the action of the counter-pressure spring 6085, tightly pressing against the upper surface of the horizontal plate of the crossarm 7. Through this series of linkages, the inner pusher 6052, clamping arm 606, and counter-pressure plate 6084 form a three-point coordinated fixation of the crossarm 7—inner support, outer grip, and upper pressure—ensuring absolute stability of the crossarm 7 during flipping and welding. The inverted U-shaped handle 609 at the upper end of the end clamp 6 has a control button 6091 on its inner side, which makes it easy for the operator to hold and perform clamping and releasing operations with one hand.

[0035] The overall workflow of this fixture enables the complete welding of the longitudinal seams on both sides of the crossarm 7: In the initial state, the crossarm 7 is clamped with the horizontal plate facing up and the inclined plate facing down, and the movable end shaft 402 is at the lowest point of the angle adjustment hole 401. At this time, the upper horizontal plate of the crossarm 7 is in a default horizontal state and can be welded directly. After the longitudinal seams on both sides of the horizontal plate are welded, the flip control component works, driving the crossarm 7 to precisely flip 180 degrees, so that the upper end becomes an inclined plate. Then the horizontal detection component intervenes, detects the tilt angle of the inclined plate and feeds the data back to the control system. The docking angle adjustment component drives the movable end shaft 402 to move upward according to the instruction until the inclined plate is adjusted to a horizontal state. Finally, the longitudinal seams on both sides of the inclined plate are welded, thus completing the high-quality welding operation on both sides of the crossarm 7 on one set of fixtures.

[0036] A method for repositioning a displacement fixture for welding the longitudinal seam of a crossarm on a power transmission and transformation steel pipe pole includes the following steps: Step 1, Initial clamping and positioning: Operate the quick clamping and coordinating components to fix the crossarm 7 at three points through the inner push tongue block 6052, clamping arm 606 and pressure plate 6084, so that the upper horizontal plate of the crossarm 7 faces upward and the lower inclined plate faces downward, and the movable end shaft 402 on the docking angle adjustment frame 4 is at the lowest point of the angle adjustment hole 401, ensuring that the upper horizontal plate of the crossarm 7 is in the initial horizontal state; Step 2, First longitudinal seam welding: By checking the horizontal detection component on the suspension 5 or directly confirming the horizontal state of the upper horizontal plate of the crossarm 7, the longitudinal seams on both sides of the upper horizontal plate of the crossarm 7 are welded using the welding equipment installed on the detection suspension 5. Step 3, workpiece flipping: After completing step 2, the flipping control component works. Through the meshing of the worm gear 303 and the flipping screw 304, the end clamp 6 and the crossarm 7 connected to the fixed end shaft 301 are driven to rotate 180 degrees around the horizontal axis, so that the upper end of the crossarm 7 becomes the inclined plate to be welded. Step 4, Second Angle Adjustment and Leveling: Activate the horizontal detection component, measure the distance between it and two points on the upper inclined plate of the crossarm 7 and calculate the difference. The controller in the control box 2 controls the docking angle adjustment component to work according to the difference. The docking angle adjustment component drives the movable end shaft 402 to move vertically in the angle adjustment hole 401, which drives the corresponding end of the crossarm 7 to rise and fall until the inclined plate on the upper end of the crossarm 7 is adjusted to a horizontal state. Step 5, Second longitudinal seam welding: Maintaining the posture adjusted in Step 4, use welding equipment to weld the longitudinal seams on both sides of the upper inclined plate of crossarm 7.

[0037] Working principle: When using this crossarm welding displacement fixture for power transmission and transformation steel pipe poles, the operator first holds the fixture by the handle 609 at the upper end of the end clamp 6, and presses the control button 6091 inside the handle 609 to activate the quick clamping coordination component to clamp the workpiece. After receiving a signal, the piston rod of the clamping cylinder 6031 retracts, driving the rocker arm 604 to rotate around the shaft at the lower end of the central hole 602. The movable waist hole 6041 at the upper end of the rocker arm 604 drives the inner pusher 605 to move to one side of the crossarm 7 through the inner connecting shaft 6051, so that the inner pusher tongue 6052 is inserted into the end cavity of the crossarm 7 to achieve internal support positioning. While the inner pusher 605 moves, the connecting arms 6053 rotatably connected on both sides move inward, supporting the inner end of the outer clamping arm 606, so that the clamping arm 606 rotates around the pin shaft, and the clamping head 6061 hugs the outer wall of the side plate of the crossarm 7 inward. The vertical clamping protrusion 6062 set on the inner arc surface of the clamping head increases the friction with the side plate of the crossarm 7 to ensure stable clamping. The interlocking rod 6071 and interlocking tongue 6072, which are fixedly connected to the upper end of the inner pusher 605 via the interlocking member 607, move inward accordingly. The beveled surface at the bottom of the end of the interlocking tongue 6072 contacts the beveled surface at the upper end of the counter-pressure block 6083 and generates pressure, forcing the counter-pressure block 6083 to overcome the elastic force of the counter-pressure spring 6085 and drive the counter-pressure guide rod 6082 and the counter-pressure plate 6084 to rise. After the interlocking tongue 6072 passes the counter-pressure block 6083, the counter-pressure plate 6084 is under the pressure of the counter-pressure spring 6085. Under the action of the pressure, it is pressed down and tightly held on the upper surface of the horizontal plate of the crossarm 7. At this time, the inner pusher 6052, the clamping arm 606 and the pressure plate 6084 form a three-point coordinated fixation of the crossarm 7 with inner support, outer grip and upper pressure. At this time, the crossarm 7 is stably clamped between the two end clamps 6, and the initial state is that the horizontal plate is facing up and the inclined plate is facing down. The movable end shaft 402 on the docking angle adjustment frame 4 is at the lowest point of the angle adjustment hole 401, and the upper horizontal plate of the crossarm 7 is in the default horizontal state.

[0038] After clamping, the operator starts the welding procedure. Since the upper horizontal plate of crossarm 7 is already horizontal, the welding equipment installed on the upper end of the detection suspension 5 can be used directly to weld the longitudinal seams on both sides of the upper horizontal plate of crossarm 7. During the welding process, the horizontal detection component in the inner frame of the detection suspension 5 is in a non-working state. At this time, the electromagnetic plate 503 is energized and generates a magnetism that is opposite to that of the detection crossbar 502, causing the detection crossbar 502, made of magnetism, to be attracted and fixed to the side wall of the detection suspension 5, thus avoiding interference with the welding operation. After the longitudinal seams on both sides of the horizontal plate are welded, the workpiece flipping process begins.

[0039] The flipping control component starts working, and the flipping motor 305 drives the flipping screw 304 to rotate. Through meshing transmission, it drives the worm gear 303 and the fixed end shaft 301 fixedly connected to it to rotate, thereby driving the end clamp 6 to carry the crossarm 7 to precisely flip around the horizontal axis. When the worm gear 303 rotates to 180 degrees, the limit sensor receiver 3031 set on the outer wall of the worm gear 303 is exactly aligned with the limit sensor transmitter 3061 on the inner side of the lower end of the limit frame 306, generating a positioning signal that is fed back to the control box 2. The flipping motor 305 stops working. At this time, the crossarm 7 is precisely flipped 180 degrees, and its upper end changes from the original horizontal plate to the inclined plate to be welded.

[0040] After the crossarm 7 is flipped, the level detection component automatically intervenes. The electromagnetic plate 503 is de-energized, and the detection crossarm 502 slides down the side groove 501 to the middle of the detection suspension 5 under gravity. The two distance sensors 504 at the bottom of the detection crossarm 502 measure the distance to two points on the upper inclined plate of the crossarm 7, respectively. The difference is calculated to determine the tilt angle of the inclined plate, and the data is fed back to the controller in the control box 2 in real time. The controller connects to the angle adjustment component for coordinated operation according to the difference signal command. The angle adjustment motor 4041 starts, driving the angle adjustment screw 4042 in the lifting frame 404 to rotate. The lifting sleeve block 403, which is screwed to the screw, drives the movable end shaft 402 to move vertically in the angle adjustment hole 401, thereby driving the corresponding end of the crossarm 7 to rise and fall. During the adjustment process, the distance sensor 504 continuously monitors the levelness of the upper surface of the crossarm 7, forming a closed-loop control until the inclined plate at the upper end of the crossarm 7 is precisely adjusted to a level state. After adjustment, the locking cylinder 4053 of the locking brake component 405 pushes the locking block 4054 to press the anti-slip groove on the outer end of the locking brake plate 4051. The locking brake plate 4051 locks the retainer 4021 of the movable end shaft 402 through the brake sleeves 4052 that are vertically fixed at both ends, ensuring that the position of the movable end shaft 402 is absolutely fixed during the subsequent welding process.

[0041] Finally, keeping the inclined plate of crossarm 7 in a horizontal position, the longitudinal seams on both sides of the inclined plate at the upper end of crossarm 7 are welded using the welding equipment installed on the inspection suspension 5. After welding is completed, the operator presses the control button 6091 again, the piston rod of the clamping cylinder 6031 extends, driving the rocker arm 604 to rotate in the opposite direction, the inner pusher 605 retracts, the interlocking pressure tongue 6072 disengages from the pressure block 6083, the pressure plate 6084 resets under the action of the pressure spring 6085, the clamping arm 606 is released, and the inner pusher 6052 exits from the cavity of crossarm 7. The crossarm 7 with the double-sided longitudinal seam welded can then be removed from the fixture, thus achieving efficient and high-quality welding of the longitudinal seams on both sides of the horizontal plate and the inclined plate of crossarm 7 on a single set of fixtures.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A welding displacement fixture for longitudinal seam welding of a crossarm of a power transmission and transformation steel pipe pole, used for complete welding of the longitudinal seam between the upper horizontal plate and the lower inclined plate of the crossarm (7), comprising: The fixture base (1), control box (2), flip control frame (3), docking angle adjustment frame (4), detection suspension (5), and end clamp (6) are provided. One end of the fixture base (1) is the control box (2). The fixture base (1) is characterized in that the flip control frame (3) and docking angle adjustment frame (4) are symmetrically and vertically arranged on the fixture base (1); the flip control frame (3) and docking angle adjustment frame (4) are each provided with an end clamp (6) on opposite sides, and the crossbeam (7) of the longitudinal seam to be welded is between the two end clamps (6); a rectangular detection suspension (5) is fixedly connected between the upper ends of the flip control frame (3) and docking angle adjustment frame (4). The flip control frame (3) is equipped with a flip control component, which is used to drive the corresponding end clamp (6) to carry the crossarm (7) to flip at 0 degrees and 180 degrees; the docking angle adjustment frame (4) is equipped with a docking angle adjustment component, which is used to drive the corresponding end clamp (6) to carry the corresponding end of the crossarm (7) to vertical displacement, so as to keep the upper welding surface of the crossarm (7) always in a horizontal state; the end clamp (6) is equipped with a quick clamping coordination component, which is used to quickly and accurately clamp one end of the crossarm (7); the detection suspension (5) is equipped with a horizontal detection component, which measures the distance to two points on the upper surface of the crossarm (7) respectively, and judges the horizontal state by the difference and feeds it back to the controller in the control box (2) for processing, and the docking angle adjustment component performs coordinated operation.

2. The positioning tool for welding the longitudinal seam of the crossarm of a power transmission and transformation steel pipe pole according to claim 1, characterized in that: A reinforcing base (101) is provided vertically upward at the extension line between the flip control frame (3) and the docking angle adjustment frame (4) on the upper surface of the tooling base (1). The upper end of the reinforcing base (101) is a sloping structure with inclined sides on the left and right. The roots of the flip control frame (3) and the docking angle adjustment frame (4) are embedded in the reinforcing base (101).

3. The positioning tool for welding the longitudinal seam of the crossarm of a power transmission and transformation steel pipe pole according to claim 1, characterized in that: The flip control assembly includes a fixed end shaft (301), a support (302), a worm gear (303), a limit sensor receiver (3031), a flip screw (304), a flip motor (305), a limit frame (306), and a limit sensor transmitter (3061). The fixed end shaft (301) is vertically mounted on the flip control frame (3) at the position corresponding to the end clamp (6). The end of the fixed end shaft (301) away from the end clamp (6) is fixedly connected to the worm gear (303). The flip screw (304) is horizontally mounted on the flip control frame (3) below the worm gear (303). One end of the flip screw (304) is fixedly connected to the rotating shaft of the flip motor (305) through a coupling. The flip screw (304) meshes with the worm gear (303). The flip above the worm gear (303) is... A horizontally placed L-shaped limit frame (306) is fixedly installed on the side wall of the control frame (3). The lower inner side of the limit frame (306) is provided with a limit sensor transmitter (3061). The limit sensor transmitter (3061) is close to the worm gear (303). Two symmetrical limit sensor receivers (3031) are provided on the outer side wall of the worm gear (303) near the edge. When the limit sensor transmitter (3061) corresponds to the two limit sensor receivers (3031), they correspond to the 0-degree and 180-degree states of the end clamp (6). The fixed end shaft (301) is surrounded by a support (302) at one end of the end clamp (6). The root of the support (302) is a cylindrical structure and is fixed on the flip control frame (3). The main body of the support (302) is a semi-circular arc structure with an upward opening.

4. The positioning tool for welding the longitudinal seam of the crossarm of a power transmission and transformation steel pipe pole according to claim 1, characterized in that: The docking angle adjustment assembly includes an angle adjustment hole (401), a movable end shaft (402), a baffle (4021), a lifting sleeve (403), a lifting frame (404), an angle adjustment motor (4041), and an angle adjustment lead screw (4042). The docking angle adjustment frame (4) has vertically distributed oval-shaped angle adjustment holes (401) at the installation positions corresponding to the end clamps (6). The movable end shaft (402) is horizontally installed in the angle adjustment hole (401). The lifting sleeve (403) is fitted around the docking angle adjustment frame (4) outside the angle adjustment hole (401). The two ends of the end shaft (402) pass through the two sides of the lifting sleeve block (403), and the movable end shaft (402) is provided with baffles (4021) near the two ends. The lifting sleeve block (403) is vertically provided with a lifting frame (404) on one side of the docking angle adjustment frame (4). Angle adjustment screw (4042) is vertically rotatably installed in the lifting frame (404). The angle adjustment screw (4042) is vertically rotatably screwed to the lifting sleeve block (403). The upper end of the lifting frame (404) is provided with an angle adjustment motor (4041) for driving the angle adjustment screw (4042) to rotate.

5. The longitudinal seam welding positioning tool for the crossarm of a power transmission and transformation steel pipe pole according to claim 4, characterized in that: The docking angle adjustment assembly also includes a locking brake component (405), which consists of a locking brake plate (4051), a brake sleeve (4052), a locking brake cylinder (4053), and a locking brake block (4054). The locking brake component (405) is fixedly installed on the side wall of the lifting sleeve block (403) opposite to the lifting frame (404). The locking brake plate (4051) is horizontally inserted through the locking brake component (405). One end of the locking brake plate (4051) is slidably tangent to the lifting sleeve block (403). The two ends of the locking brake plate (4051) are respectively vertically fixed with brake sleeves (4052). The ends of the brake sleeves (4052) are inserted into the corresponding baffles. In (4021), the side wall of the locking brake plate (4051) away from the lifting sleeve block (403) is provided with vertically spaced anti-slip grooves. The outer side wall of the locking brake component (405) is vertically provided with a locking brake cylinder (4053). The piston rod end of the locking brake cylinder (4053) is vertically fixedly connected to the locking brake plate (4051) with a locking brake block (4054). The inner end of the locking brake block (4054) is opposite to the anti-slip groove surface of the outer end of the locking brake plate (4051). The piston rod of the locking brake cylinder (4053) moves inward, and the locking brake block (4054) contacts the locking brake plate (4051). The position of the locking brake plate (4051) is fixed, that is, the position of the movable end shaft (402) is fixed.

6. The positioning tool for welding the longitudinal seam of the crossarm of a power transmission and transformation steel pipe pole according to claim 1, characterized in that: Welding equipment is installed at the upper end of the detection suspension (5). The horizontal detection component includes a side groove (501), a detection crossbar (502), an electromagnetic plate (503), and a distance sensor (504). The side groove (501) is opened from the middle to one side in the side wall of the inner frame of the detection suspension (5). The detection crossbar (502) is slidably installed between the two side grooves (501). The distance sensor (504) is provided at the bottom of the detection crossbar (502) near the two ends of the crossarm (7). The electromagnetic plate (503) is provided in the long side wall of the inner frame of the detection suspension (5) near the side groove (501). The detection crossbar (502) is made of magnet. The magnetism of the electromagnetic plate (503) in the energized state is different from that of the detection crossbar (502). During detection, the detection crossbar (502) is in the middle of the detection suspension (5). When not being detected, the electromagnetic plate (503) is attached to the detection crossbar (502).

7. The longitudinal seam welding displacement tool for the crossarm of a power transmission and transformation steel pipe pole according to claim 4, characterized in that: The quick-clamping coordination assembly includes a rotary connector (601), a central hole (602), a clamping power frame (603), a clamping cylinder (6031), a rocker arm (604), a movable waist hole (6041), an inner pusher (605), an inner connecting shaft (6051), an inner pusher tongue block (6052), a connecting arm (6053), a clamping arm (606), a clamping head (6061), a clamping protrusion (6062), an interlocking component (607), an interlocking rod (6071), an interlocking pressure tongue (6072), an interlocking spring (6073), a counterweight frame (608), and a directional sleeve (6081). The end clamp (6) includes a pressure guide rod (6082), a pressure connecting block (6083), a pressure plate (6084), a pressure spring (6085), a handle (609), and a control button (6091). A rotating connector (601) is fixedly mounted vertically outward at the center of the end clamp (6). The rotating connector (601) on the end clamp (6) at the flip control frame (3) is connected to the fixed end shaft (301) via a universal joint. The rotating connector (601) on the end clamp (6) at the docking angle adjustment frame (4) is connected to the movable end shaft (402) via a universal joint. The upper and lower ends of the end clamp (6) are... A central hole (602) is provided through the rocker arm (604) at the lower end of the central hole (602) via a rotating shaft. The rotating shaft is located in the middle of the rocker arm (604). A clamping power frame (603) is fixedly installed on the end clamp (6) on one side of the rotating connector (601) below the rocker arm (604). A clamping cylinder (6031) is rotatably installed in the clamping power frame (603). The piston rod end of the clamping cylinder (6031) is rotatably connected to the lower end of the rocker arm (604) via a rotating shaft. An inner pusher (605) is slidably provided in the end clamp (6) towards the side where the crossbeam (7) is located. 605) The end near the crossarm (7) is an inner push tongue block (6052). The outer edge of the top of the inner push tongue block (6052) is chamfered. The inner connecting shaft (6051) is horizontally fixed in the concave cavity of the other end of the inner push part (605). The upper end of the rocker arm (604) is provided with a movable waist hole (6041). The inner connecting shaft (6051) is slidably placed in the movable waist hole (6041). The piston rod of the clamping cylinder (6031) retracts, the rocker arm (604) rotates, and drives the inner push part (605) to move to one side of the crossarm (7). The inner push tongue block (6052) is inserted into the cavity of the crossarm (7).The left and right sides of the inner push member (605) are respectively connected to the connecting arm (6053) by a pin. The left and right sides of the end position of the end clamp (6) are respectively connected to the clamping arm (606) by a pin. The end of the connecting arm (6053) is rotatably connected to the inner end of the clamping arm (606). The outer end of the clamping arm (606) is an inwardly folded clamping head (6061). The inner arc surface of the clamping head (6061) is provided with vertically distributed clamping protrusions (6062). When the inner push member (605) moves into the crossbeam (7), the connecting arm (6053) supports the inner end of the clamping arm (606), and the clamping head (6061) of the clamping arm (606) moves inward and hugs the outer wall of the side plate of the crossbeam (7), cooperating with the inner push member (605). The pusher block (6052) initially clamps the crossarm (7); the upper end of the inner pusher (605) passes through the central hole (602) and is fixedly connected to the interlocking member (607). The middle part of the upper end of the interlocking member (607) is provided with an interlocking rod (6071) that slides vertically toward the crossarm (7). The end of the interlocking rod (6071) is fixedly connected to the interlocking pressure tongue (6072). The bottom of the end of the interlocking pressure tongue (6072) is beveled. The other end of the interlocking rod (6071) is screwed with a bolt stop. An interlocking spring (6073) is fitted on the interlocking rod (6071). The interlocking spring (6073) provides a thrust for the interlocking pressure tongue (6072) to move toward the crossarm (7); the end clamp above the inner pusher block (6052) is... 6) A counter-pressure frame (608) is provided at the end position. The counter-pressure frame (608) has symmetrical counter-pressure guide rods (6082) vertically arranged in the counter-pressure frame (6082). The upper ends of the counter-pressure guide rods (6082) are fixedly connected to the counter-pressure connecting block (6083). The middle part of the counter-pressure connecting block (6083) has a corresponding inclined surface on the side of the interlocking pressure tongue (6072). The lower ends of the counter-pressure guide rods (6082) are fixedly connected to the counter-pressure plate (6084). The side of the counter-pressure plate (6084) near the crossarm (7) has an inclined structure. The counter-pressure spring (6085) is fitted on the counter-pressure guide rods (6082). The counter-pressure spring (6085) provides the counter-pressure plate (6084) with a downward thrust. The counter-pressure plate (6084) presses on the upper end of the horizontal plate of the crossarm (7). The upper end of the pressure frame (608) is provided with a directional sleeve (6081). The interlocking pressure tongue (6072) slides vertically through the directional sleeve (6081). While the inner pusher (605) moves towards the crossarm (7), the inclined surface at the bottom of the end of the interlocking pressure tongue (6072) contacts and presses against the upper inclined surface of the counter-pressure block (6083). The counter-pressure plate (6084) is in a state of further contact and pressing against the upper horizontal plate of the crossarm (7). Together with the inner pusher block (6052) and the clamping arm (606), the crossarm (7) is fixed at three points. The upper outer end of the end clamp (6) is provided with an inverted U-shaped handle (609). The inner side of the handle (609) is provided with a control button (6091) for controlling the clamping cylinder (6031).

8. The displacement tooling for welding the longitudinal seam of the crossarm of a power transmission and transformation steel pipe pole according to claim 7, characterized in that: The initial clamping state of the crossarm (7) is with the horizontal plate facing up and the inclined plate facing down. The horizontal plate of the crossarm (7) is clamped between the pressure plate (6084) and the inner push tongue block (6052). The movable end shaft (402) is at the lowest point of the angle adjustment hole (401). The upper horizontal plate of the crossarm (7) is in the default horizontal state. The welding equipment can directly perform welding. The horizontal detection component can also intervene for pre-inspection before welding. After the welding of the two side seams of the horizontal plate of the crossarm (7) is completed, the flip control component works to drive the crossarm (7) to flip 180 degrees. At this time, the upper end of the crossarm (7) is an inclined plate. The horizontal detection component intervenes to perform horizontal detection. The docking angle adjustment component works in conjunction with the detection data to drive the end clamp (6) of one end of the docking angle adjustment frame (4) to move up until the inclined plate of the crossarm (7) is in a horizontal state. The welding equipment welds the two side seams of the inclined plate of the crossarm (7).

9. A method for repositioning a repositioning fixture for welding the longitudinal seam of a crossarm of a power transmission and transformation steel pipe pole as described in any one of claims 1-8, characterized in that: Includes the following steps: Step 1, Initial clamping and positioning: Operate the quick clamping coordination component to fix the crossarm (7) at three points through the inner push tongue block (6052), clamping arm (606) and pressure plate (6084), so that the upper horizontal plate of the crossarm (7) faces upward and the lower inclined plate faces downward, and the movable end shaft (402) on the docking angle adjustment frame (4) is at the lowest point of the angle adjustment hole (401), ensuring that the upper horizontal plate of the crossarm (7) is in the initial horizontal state; Step 2, first longitudinal seam welding: By checking the horizontal detection component on the suspension (5) or directly confirming the horizontal state of the upper horizontal plate of the crossarm (7), the longitudinal seams on both sides of the upper horizontal plate of the crossarm (7) are welded using the welding equipment installed on the detection suspension (5); Step 3, workpiece flipping: After completing step 2, the flipping control component works, and through the meshing of the worm gear (303) and the flipping screw (304), it drives the end clamp (6) and the crossarm (7) connected to the fixed end shaft (301) to rotate 180 degrees around the horizontal axis, so that the upper end of the crossarm (7) becomes the inclined plate to be welded. Step 4, second angle adjustment and leveling: Start the horizontal detection component, measure the distance between it and the two points of the upper inclined plate of the crossarm (7) and calculate the difference. The controller in the control box (2) controls the docking angle adjustment component to work according to the difference. The docking angle adjustment component drives the movable end shaft (402) to move vertically in the angle adjustment hole (401), driving the corresponding end of the crossarm (7) to rise and fall until the inclined plate at the upper end of the crossarm (7) is adjusted to a horizontal state. Step 5, Second longitudinal seam welding: Maintain the posture adjusted in step 4, and use welding equipment to weld the longitudinal seams on both sides of the upper inclined plate of the crossarm (7).

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