Three-way stand column assembling and welding positioning device

Abstract

A three-way stand column assembly welding positioning device belongs to the technical field of welding and comprises a connecting mechanism mounted at the other end of a rod body, a pair of limiting mechanisms and a pair of end locking mechanisms are arranged on the connecting mechanism, during welding, the limiting mechanisms are used for limiting supporting arms, and the end locking mechanisms are used for limiting mounting plates. The connecting mechanism is installed at the end of the rod body in a surrounding mode, after the connecting mechanism and the rod body are connected, the inclination angle and the like of the supporting arm are fixed subsequently through the limiting mechanism, so that welding operation is facilitated, and in the welding process, due to the fact that the supporting arm is fixed, the welding precision is improved. And the end lock structure has a positioning effect on the mounting plate so as to ensure the welding precision between the V-shaped plate and the fixed plate. According to the three-way stand column welding device, positioning of all parts of a three-way stand column is facilitated, the precision after welding is ensured, the rod body and other parts can rotate after positioning, welding of operators is facilitated, and the welding efficiency of the three-way stand column is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a three-way column assembly welding positioning device. Background Art

[0002] like Figures 15 to 17 As shown, it is a display diagram of a three-way column and its internal components. As can be seen from the figure, the three-way column 9 includes a rectangular base 90, a rod body 92 is welded on the rectangular base 90, a rib plate 91 is welded between the rod body 92 and the rectangular base 90, a pair of sleeves 93 are welded to the other end of the rod body 92, there is an angle between the axial directions of the sleeves 93, and the angle is an obtuse angle, a support arm 94 is inserted and welded in the sleeve 93, a V-shaped plate 95 is welded to the other end of the support arm 94, a welding block 96 is formed at the other end of the V-shaped plate 95, the plane where the welding block 96 on the V-shaped plate 95 is located is an inclined surface, a mounting plate 97 is sleeved on the welding block 96, a rectangular hole 98 is opened on the mounting plate 97, the welding block 96 is inserted and welded in the rectangular hole 98, two rows of mounting holes are opened on the mounting plate 97, and the lower wall of the mounting plate 97 contacts the inclined surface of the V-shaped plate 95. The three-way column 9 is used to support the photovoltaic carport, and the rectangular base 90 at the lower end thereof is installed on the base by bolts, and the frame of the photovoltaic carport is installed on the mounting plate 97 by bolts. In order to facilitate the drainage of rainwater and improve the absorption and conversion effect of light, the photovoltaic carport is often set to an inclined posture. In order to ensure that the photovoltaic carport is in an inclined posture, the plane where the upper end surfaces of the two mounting plates 97 are located is inclined, and the inclination angle is determined by the inclined surface of the V-shaped plate 95. Among them, the above-mentioned rod body 92 and rib plate 91, rod body 92 and rectangular base 90, sleeve 93 and rod body 92, sleeve 93 and support arm 94, support arm 94 and V-shaped plate 95, V-shaped plate 95 and mounting plate 97 are all welded by welding. Among them, the welding accuracy between sleeve 93 and rod body 92, between sleeve 93 and support arm 94, between support arm 94 and V-shaped plate 95, and between V-shaped plate 95 and mounting plate 97 will directly affect the welding accuracy of the entire three-way column 9. In the welding process, how to effectively and accurately fix the relative positions between support arm 94 and rod body 92, between support arm 94 and V-shaped plate 95, and between V-shaped plate 95 and mounting plate 97 becomes the key to controlling welding accuracy. In addition, how to facilitate the welding operation during welding, such as during welding, in order to perform the overall welding of the welding position, it is necessary to constantly adjust the posture of the three-way column 9, and the posture adjustment during the entire welding process will take up a lot of working time, resulting in low welding efficiency of the three-way column 9. Summary of the invention

[0003] The present invention provides a three-way column assembly welding positioning device to solve the above-mentioned deficiencies in the prior art, which can improve the welding efficiency and welding accuracy of the three-way column and has strong practicality.

[0004] In order to achieve the purpose of the present invention, the following technologies are proposed: A three-way column assembly welding positioning device includes a connecting mechanism installed on the other end of a rod body, a pair of limiting mechanisms and a pair of end locking mechanisms are provided on the connecting mechanism, during welding, the limiting mechanism is used to limit the position of the support arm, and the end locking mechanism is used to limit the position of the mounting plate, wherein the connecting mechanism is installed at the end of the rod body in an embracing manner, when the connecting mechanism and the rod body are connected, the inclination angle of the support arm is subsequently fixed by the limiting mechanism, thereby facilitating the welding operation, and since the support arm is fixed during welding, the welding accuracy is improved. The end locking structure has a positioning effect on the mounting plate to ensure the welding accuracy between the V-shaped plate and the fixed plate.

[0005] Furthermore, the connection mechanism includes a lower plate, which has a plurality of hollowed-out parts to facilitate welding at various welding positions on the three-way column. The lower plate is provided with two pairs of guide holes, and movable rods are inserted into the guide holes. The lower end of each pair of movable rods is installed with a lower movable plate, which is located on the lower side of the lower plate. The upper end of each pair of movable rods is installed with a connecting seat, and the inner wall of the connecting seat is provided with a clamping arc groove, and the inner periphery of the clamping arc groove is tightly attached to the outer periphery of the rod body for clamping and fixing the rod body. In order to ensure the stability after the embracing fixation, an anti-slip pattern can be provided on the inner wall of the clamping arc groove to ensure the stability and reliability after clamping. In specific applications, since the rod body adopts a conical structure design, the structure of the clamping arc groove can be designed as needed. A connecting plate is provided at the upper end of the connecting seat, and the connecting plates are connected and fixed by a plurality of screws. During welding, the inner wall of the connecting seat acts on the outer periphery of the rod body.

[0006] Furthermore, a mounting vertical plate is provided on the lower plate, an end vertical plate is installed on the mounting vertical plate, the end vertical plate is inclined, and four pairs of vertical guide holes are respectively opened at both ends of the end vertical plate. During welding, the outer wall of the mounting plate is tightly attached to the inner wall of the end vertical plate. Specifically, the angle formed between the length direction of the end vertical plate and the axial direction of the rod body is an acute angle, and the angle is greater than 45 degrees.

[0007] Furthermore, the limiting mechanism includes a concave seat, a U-shaped groove is provided on the vertical section of the concave seat, and an arc-shaped pad is provided between the vertical sections of the concave seat. The arc-shaped pad supports the support arm and improves the clamping and fixing effect by expanding the contact area after being fixed. In addition, since the concave seat is installed strictly according to the inclination angle of the support arm, the accuracy of the support arm welding is improved. A pair of limiting screws are inserted into the upper end of one of the vertical sections of the concave seat, one end of the limiting screw is provided with an end cap, and the other end of the limiting screw is connected to the upper end of another vertical section of the concave seat through a thread. A connecting convex plate is sleeved on the limiting screw, and a downward pressing arc plate is provided on the inner end of the connecting convex plate. This design method is convenient for placing the support arm and facilitating the positioning of the support arm after placement.

[0008] Furthermore, the end locking mechanism includes a pull rod passing through the vertical guide hole, a first nut is provided at the outer end of the pull rod, a limit block is provided at the inner end of each pair of pull rods, an inner extension plate is provided on the inner wall of the limit block, a plurality of inner rods are provided on the inner wall of the inner extension plate, and a conical head is provided at the inner end of the inner rod. During welding, the circumference of the conical head acts on the inner circumference of the mounting hole. The setting of the conical head can reduce the influence of the machining accuracy of the mounting hole on the welding accuracy of the mounting plate. In addition, when the conical head positions the mounting hole, it can position the mounting plate in all directions, thereby improving the accuracy during welding. The outer end of the pull rod at the same end is sleeved with an outer pull plate, and a pair of waist-shaped holes are respectively opened at the upper and lower ends of the outer pull plate, and the outer end of the pull rod is inserted into the waist-shaped hole. The outer end of each pair of pull rods is provided with a push plate, which is located on the outer side of the outer pull plate and on the inner side of the first nut. The upper and lower ends of the outer pull plate are respectively provided with a rotating rod, and the outer end of the rotating rod is rotatably provided with an inner top rotating plate, and the inner end of the inner top rotating plate is formed with a push table, and the inner end of the push table is in an arc-shaped structure. The end of the push table acts on the push plate, and a pair of rotating protrusions are provided on the outer pull plate, and a connecting rotating rod is provided on the rotating protrusion. The two ends of the connecting rotating rod are rotatably provided with a concave top plate, and the inner end of the concave top plate is in an arc-shaped structure, and the inner end of the concave top plate acts on the outer wall of the end vertical plate. Through the arrangement of the concave top plate and the inner top rotating plate, it is convenient to quickly position the mounting plate through the conical head and to quickly open and close the limit block, thereby facilitating the placement and positioning operation of the mounting plate.

[0009] Furthermore, it can be known from the above description that the complete welding operation between the various components is facilitated by rotating the rod body during welding. In order to achieve the above effect, the assembly welding positioning device also includes a base plate, a base body is installed at one end of the base plate, a pair of locking mechanisms are provided on the base body, a clamp is rotatably provided on the base body, and a bracket is installed on the base plate. During welding, one end of the rod body is provided on the clamp, and the other end of the rod body is placed on the bracket, wherein the clamp is used to fix the rectangular base and the rod body part, and after being fixed, the rod body can be rotated around its axis, thereby facilitating the complete welding operation between the various components of the three-way column. The locking mechanism can lock the rotation state of the clamp, and the bracket can support the other end of the rod body to reduce the load of the clamp to avoid affecting the welding accuracy.

[0010] Furthermore, the seat body includes a lower mounting plate mounted on the bottom plate, a vertical plate is provided on the lower mounting plate, side plates are provided on both sides of the vertical plate, the lower ends of the side plates are provided on both sides of the lower mounting plate, a middle sleeve is installed on the vertical plate, a limiting end plate is provided on the inner end of the middle sleeve, a rotating ring is rotatably provided on the middle sleeve, and a bearing is provided between the middle sleeve and the rotating ring to ensure the flexibility of rotation. A rotating disk is provided on the inner end of the rotating ring, and the limiting end plate is located on the inner side of the rotating disk to limit the rotating disk. A limiting outer ring is provided on the outer periphery of the rotating disk, and a plug hole is opened on the outer periphery of the limiting outer ring. A limiting inner ring is installed on the inner side of the vertical plate, and the limiting inner ring is located on the inner side of the limiting outer ring to further limit the rotating disk internally, thereby improving the stability of the rotation of the clamp.

[0011] Further, the locking mechanism includes a locking mounting seat mounted on the vertical plate, a lug is provided at the outer end of the locking mounting seat, a hinge shaft is provided at the outer end of the lug, an outer pull-out recess is rotatably provided on the hinge shaft, a strip hole is provided at the inner end of the outer pull-out recess, an outer pull pin is inserted in the strip hole, a handle rod is provided at the outer end of the outer pull-out recess, a pull-out rod is provided on the outer pull pin, a round head plate is sleeved on the pull-out rod, the round head plate is arranged on the outer end of the locking mounting seat, an inner disk is provided at the inner end of the pull-out rod, a spring is sleeved on the pull-out rod, the spring is located between the inner disk and the round head plate, a latch is provided on the inner disk, the latch is inserted into the jack, and the spring can make the latch automatically move inward and perform the positioning operation of the rotating disk. The arrangement of the outer pull-out recess, the outer pull pin and the pull-out rod allows the operator to quickly cancel the rotation limit.

[0012] Furthermore, the fixture includes a pair of fixed plates installed on the rotating disk, the other end of the fixed plate is installed with an inner mounting plate, a plurality of middle mounting rods are installed on the inner mounting plate, and the other end of the middle mounting rod is installed with an outer mounting plate.

[0013] The inner mounting plate is provided with a guide rail, and end seats are provided at the upper and lower ends of the guide rail. A screw rod is rotatably provided on the end seat, and a rotating cap is provided at one end of the screw rod. The rotating cap can be provided with parts such as a dumbbell rod to facilitate the rotation of the screw rod. A moving seat is connected to the screw rod through a thread, and a sliding sleeve is installed at the inner end of the moving seat. The moving seat sleeve is provided on the guide rail, and a movable arm is provided on the sliding sleeve. A transverse hole is provided on the movable arm, and an action rod is provided in the transverse hole. A swing arm is provided at the inner end of the action rod. When the movable arm moves, it can act on the action rod through the transverse hole, so that the swing arm rotates. A ring sleeve is provided at the other end of the swing arm, an inner pin is inserted into the ring sleeve, a rotating tube is passed through the ring sleeve, the rotating tube is passed through the mounting inner plate, a turntable is provided at the inner end of the rotating tube, oblique holes are opened in a circular array on the turntable, an angle is formed between the length direction of the oblique holes and the radial direction of the turntable, an outer support rod is passed through the oblique hole, a movable inner plate is provided at the inner end of the outer support rod, a pair of movable inner rods is provided on the movable inner plate, an inner top arc plate is provided at the inner end of each pair of movable inner rods, the structure of the outer wall of the inner top arc plate matches the inner wall structure of the rod body, and an anti-slip pattern can be provided on the outer wall of the inner top arc plate to ensure that no relative sliding occurs between the rod body and the inner top arc plate. During welding, the outer wall of the inner top arc plate acts on the inner wall of the rod body, and a plurality of pairs of guide strip holes are opened on the mounting middle rod. The movable inner rod is passed through the guide strip holes. When the turntable rotates, it can act on the outer support rod through the oblique hole, so that the outer support rod and the inner top arc plate indirectly connected thereto move outward, thereby fixing the rod body mounted on the inner top arc plate. After fixing, the axial direction of the rod body and the axial direction of the rotating disk can be ensured to coincide.

[0014] Furthermore, in order to position the rectangular base and improve the verticality of the rectangular base and the rod body after welding, that is, the axial direction of the rod body and the plane of the rectangular base are perpendicular after welding, a pair of inner pull rods are provided on the turntable, and an inner vertical plate is sleeved on the inner pull rod, and an effective long hole is opened on the inner vertical plate, and the inner pull rod is passed through the effective long hole, and an inner pull arm is installed on the inner vertical plate, and an inner pull seat is installed at the outer end of the inner pull arm, and a pair of connecting guide rods are provided on the inner pull seat, and an inner pressure plate is provided at the inner end of the connecting guide rod, and a limiting outer plate is provided on the inner wall of the inner pressure plate, and two pairs of inner pull guide holes are respectively opened at both ends of the installation outer plate, and the connecting guide rods are passed through the inner pull guide holes, and the length direction of the inner pull guide holes is parallel to the long end direction of the installation outer plate. When the turntable rotates, the inner pull rod acts on the long hole, so that the inner wall of the inner pressure plate is tightly attached to the end of the rectangular base, thereby fixing the position of the rectangular base. After fixing, the hole opened on the rectangular base coincides with the axial direction of the rotating disk, thereby ensuring the welding accuracy between the rod body and the base. During welding, the root of the rod body is inserted into the hole to ensure the welding effect between the two.

[0015] Furthermore, it can be seen from the above components that the two ends of the rectangular base are limited, while its upper and lower side walls are not limited, and thus it cannot ensure that the axial direction of the hole on the rectangular base coincides with the axial direction of the rotating disk. A pair of racks are installed at both ends of the inner pull seat, and a gear is meshed on the rack. The gear is coaxially provided with a rotating shaft, and an inner pressure wheel is eccentrically provided at the inner end of the rotating shaft. The inner pressure wheel is located on the inner side of the mounting outer plate, and an annular convex edge is provided at the inner end of the inner pressure wheel, which can act on the upper and lower side walls of the rectangular base through the circumferential side of the inner pressure wheel to completely position the rectangular base, and the convex edge is provided to ensure the stability of the rectangular base after it is fixed.

[0016] Furthermore, a concave end seat is installed at each end of the inner pull seat, a pair of push-pull arms are provided on the concave end seat, and an action pin is provided at the inner end of the push-pull arm. The rotating shaft is a spline structure, the gear sleeve is provided on the rotating shaft, and a spline sleeve is coaxially provided on the gear, the spline sleeve is rotatably provided on the mounting outer plate, and a constraint ring is connected to the spline sleeve through a pin, and the constraint ring plays a limiting role on the axial direction of the spline sleeve. A pair of limiting rings are provided at the outer end of the rotating shaft, and a concave pull seat is provided at the outer end of the rotating shaft. The limiting rings are located on the inner and outer sides of the concave pull seat, and an outer pull transverse groove is provided on the concave pull seat, and an outer pull inclined groove is provided at the outer end of the outer pull transverse groove, and the outer end of the outer pull inclined groove is inclined inwardly, and the action pin moves in the outer pull inclined groove and the outer pull transverse groove, and a plurality of outward extension guide rods are passed through the concave pull seat, and the inner ends of the outward extension guide rods are mounted on the mounting outer plate. The inner pressure wheel can be pulled inwards so as to limit the rectangular base through the annular convex edge, and this design method facilitates the placement of the rectangular base.

[0017] Furthermore, the bracket includes a mounting lower plate, the upper end of which is equipped with a vertical rod, the upper end of which is equipped with a connecting head, and the upper end of which is equipped with a placement arc plate. During welding, the rod body is placed on the placement arc plate, and the rod body can be stably supported by the placement arc plate.

[0018] The advantages of the above technical solution are: The present invention facilitates the positioning of various components of the three-way column to ensure the accuracy after welding, and after positioning, components such as the rod body can be rotated, thereby facilitating operators to implement welding and significantly improving the welding efficiency of the three-way column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 A three-dimensional structural diagram of the assembly welding positioning device is shown.

[0021] Figure 2A connection diagram of a three-way column, a connecting mechanism, a limiting mechanism and an end locking mechanism is shown, wherein the position of the wavy line in the figure is an omission of a partial section of the rod body of the three-way column, and since the rod body of the three-way column has a conical structure, the diameters of the two sections before and after the wavy line are not equal.

[0022] Figure 3 A three-dimensional structural diagram of the limiting mechanism is shown.

[0023] Figure 4 A three-dimensional structural diagram of the end locking mechanism is shown, wherein the position of the wavy line in the diagram is a partial cutout display of the end vertical plate.

[0024] Figure 5 A three-dimensional structural diagram of the seat body, locking mechanism, and clamp is shown.

[0025] Figure 6 A cross-sectional structural diagram of the seat body is shown.

[0026] Figure 7 A three-dimensional structural diagram of the locking mechanism is shown.

[0027] Figure 8 A diagram showing the overall structure of the fixture is shown.

[0028] Fig. 9 A diagram showing the internal structure of the fixture.

[0029] Fig.10 A display diagram of the first part in the clamp is shown.

[0030] Fig.11 A display diagram of the second part of the fixture is shown.

[0031] Fig.12 A display diagram of the third part of the fixture is shown.

[0032] Fig.13 A display diagram of the fourth part of the fixture is shown.

[0033] Fig.14 A three-dimensional structural diagram of the bracket is shown.

[0034] Fig.15 A three-dimensional structural diagram of a three-way column is shown.

[0035] Fig.16 A three-dimensional structural diagram of the V-shaped plate on the three-way column is shown.

[0036] Fig.17 A three-dimensional structural diagram of the mounting plate is shown.

[0037] Description of reference numerals: Base plate 1, seat body 2, locking mechanism 3, clamp 4, bracket 5, connecting mechanism 6, limiting mechanism 7, end locking mechanism 8, three-way column 9, lower mounting plate 20, vertical plate 21, side plate 22, middle sleeve 23, limiting end plate 24, limiting inner ring 25, rotating plate 26, rotating ring 27, limiting outer ring 28, jack 29, locking mounting seat 300, round head plate 301, pull-out rod 302, inner plate 303, latch 304, spring 305, outer pull pin 306, lug 307, hinge shaft 308, outer pull recess 309, handle rod 310, strip hole 311, fixing plate 400, installing inner plate 401, installing Middle rod 402, mounting outer plate 403, guide rail 404, end seat 405, screw rod 406, rotating cap 407, moving seat 408, sliding sleeve 409, movable arm 410, transverse hole 411, action rod 412, swing arm 413, ring sleeve 414, inner pin 415, rotating tube 416, turntable 417, oblique hole 418, outer support rod 419, inner pull rod 420, inner vertical plate 421, action long hole 422, inner pull arm 423, inner pull seat 424, connecting guide rod 425, inner pressure plate 426, limit outer plate 427, movable inner plate 428, concave end seat 429, inner top arc plate 430, guide strip Hole 431, inner pull guide hole 432, rotating shaft 433, inner pressure wheel 434, annular convex edge 435, gear 436, rack 437, movable inner rod 438, limiting plug rod 439, extending guide rod 440, limiting long groove 441, limiting ring 442, concave pull seat 444, outer pull horizontal groove 445, outer pull inclined groove 446, action pin 447, push-pull arm 448, install lower plate 50, vertical rod 51, connecting head 52, place arc plate 53, lower plate 60, guide hole 61, install vertical plate 62, end vertical plate 63, vertical guide hole 64, movable rod 65, lower movable plate 66, connecting seat 67, connecting plate 68, screw 6 9, concave seat 70, arc pad 71, U-shaped groove 72, limit screw 73, end cap 74, connecting convex plate 75, downward pressing arc plate 76, pull rod 800, first nut 801, limit block 802, inner extension plate 803, inner rod 804, conical head 815, outer pull plate 806, waist-shaped hole 807, push plate 808, rotating rod 809, inner top rotating plate 810, rotating protrusion 811, connecting rotating rod 812, concave top plate 813, push platform 814, rectangular base 90, rib plate 91, rod body 92, sleeve 93, support arm 94, V-shaped plate 95, welding block 96, mounting plate 97, rectangular hole 98. DETAILED DESCRIPTION

[0038] like Figure 1As shown, a three-way column assembly welding positioning device includes a connecting mechanism 6 installed on the other end of a rod body 92, and a pair of limiting mechanisms 7 and a pair of end locking mechanisms 8 are provided on the connecting mechanism 6. When welding, the limiting mechanism 7 is used to limit the support arm 94, and the end locking mechanism 8 is used to limit the mounting plate 97. In addition, it also includes a base plate 1, a base body 2 is installed at one end of the base plate 1, a pair of locking mechanisms 3 are provided on the base body 2, a clamp 4 is rotatably provided on the base body 2, and a bracket 5 is installed on the base plate 1. When welding, one end of the rod body 92 is arranged on the clamp 4, and the other end of the rod body 92 is placed on the bracket 5.

[0039] like Figure 2 As shown, the connecting mechanism 6 includes a lower plate 60, which is provided with two pairs of guide holes 61, and movable rods 65 are passed through the guide holes 61. A lower movable plate 66 is installed at the lower end of each pair of movable rods 65, and the lower movable plate 66 is located on the lower side of the lower plate 60. A connecting seat 67 is installed at the upper end of each pair of movable rods 65. A clamping arc groove is opened on the inner wall of the connecting seat 67, and a connecting plate 68 is provided at the upper end of the connecting seat 67. The connecting plates 68 are connected and fixed by multiple screws 69. When welding, the inner wall of the connecting seat 67 acts on the outer periphery of the rod body 92. A mounting vertical plate 62 is provided on the lower plate 60, and an end vertical plate 63 is installed on the mounting vertical plate 62. The end vertical plate 63 is inclined, and four pairs of vertical guide holes 64 are respectively opened at both ends of the end vertical plate 63. When welding, the outer wall of the mounting plate 97 is tightly attached to the inner wall of the end vertical plate 63.

[0040] like Figure 3 As shown, the limiting mechanism 7 includes a concave seat 70, a U-shaped groove 72 is opened on the vertical section of the concave seat 70, an arc-shaped pad 71 is provided between the vertical sections of the concave seat 70, a pair of limiting screws 73 are inserted at the upper end of one of the vertical sections of the concave seat 70, one end of the limiting screw 73 is provided with an end cap 74, the other end of the limiting screw 73 is connected to the upper end of the other vertical section of the concave seat 70 by a thread, a connecting convex plate 75 is sleeved on the limiting screw 73, and a downward pressure arc plate 76 is provided at the inner end of the connecting convex plate 75.

[0041] like Figure 4As shown, the end locking mechanism 8 includes a pull rod 800 that passes through the vertical guide hole 64, a first nut 801 is provided at the outer end of the pull rod 800, a limit block 802 is provided at the inner end of each pair of pull rods 800, an inner wall of the limit block 802 is provided with an inner extension plate 803, an inner wall of the inner extension plate 803 is provided with a plurality of inner rods 804, a conical head 815 is provided at the inner end of the inner rod 804, during welding, the circumference of the conical head 815 acts on the inner circumference of the mounting hole, an outer end of the pull rod 800 at the same end is sleeved with an outer pull plate 806, a pair of waist-shaped holes 807 are respectively opened at the upper and lower ends of the outer pull plate 806, the outer end of the pull rod 800 is passed through the waist-shaped hole 807, and a push plate 808 is provided at the outer end of each pair of pull rods 800 The push plate 808 is located on the outside of the outer pull plate 806 and on the inside of the first nut 801. The upper and lower ends of the outer pull plate 806 are respectively provided with rotating rods 809. The outer end of the rotating rod 809 is rotatably provided with an inner top rotating plate 810. The inner end of the inner top rotating plate 810 is formed with a push platform 814. The inner end of the push platform 814 is an arc-shaped structure. The end of the push platform 814 acts on the push plate 808. A pair of rotating protrusions 811 are provided on the outer pull plate 806. The rotating protrusion 811 is provided with a connecting rotating rod 812. The two ends of the connecting rotating rod 812 are rotatably provided with a concave top plate 813. The inner end of the concave top plate 813 is an arc-shaped structure, and the inner end of the concave top plate 813 acts on the outer wall of the end vertical plate 63.

[0042] like Figure 1 , Figure 5 , Figure 6 As shown, the seat body 2 includes a lower mounting plate 20 mounted on the base plate 1, a vertical plate 21 is provided on the lower mounting plate 20, side plates 22 are respectively provided on both sides of the vertical plate 21, and the lower ends of the side plates 22 are arranged on both sides of the lower mounting plate 20, a middle sleeve 23 is installed on the vertical plate 21, a limiting end plate 24 is provided at the inner end of the middle sleeve 23, a rotating ring 27 is rotatably provided on the middle sleeve 23, a rotating disk 26 is provided at the inner end of the rotating ring 27, the limiting end plate 24 is located on the inner side of the rotating disk 26, a limiting outer ring 28 is provided on the outer periphery of the rotating disk 26, and a socket 29 is opened on the outer periphery of the limiting outer ring 28, a limiting inner ring 25 is installed on the inner side of the vertical plate 21, and the limiting inner ring 25 is located on the inner side of the limiting outer ring 28.

[0043] Combination Figures 5 to 7As shown, the locking mechanism 3 includes a locking mounting seat 300 mounted on the vertical plate 21, a lug 307 is provided at the outer end of the locking mounting seat 300, a hinge shaft 308 is provided at the outer end of the lug 307, an outer pull recess 309 is rotatably provided on the hinge shaft 308, a strip hole 311 is opened at the inner end of the outer pull recess 309, an outer pull pin 306 is inserted into the strip hole 311, and a handle bar 31 is provided at the outer end of the outer pull recess 309. 0, a pull-out rod 302 is provided on the outer pull pin 306, a round head plate 301 is sleeved on the pull-out rod 302, the round head plate 301 is arranged on the outer end of the locking mounting seat 300, an inner disk 303 is provided on the inner end of the pull-out rod 302, a spring 305 is sleeved on the pull-out rod 302, the spring 305 is located between the inner disk 303 and the round head plate 301, a latch 304 is provided on the inner disk 303, and the latch 304 is inserted into the socket 29.

[0044] Combination Figure 5 and Figures 8 to 13 As shown, the clamp 4 includes a pair of fixed plates 400 installed on the rotating disk 26, and the other end of the fixed plate 400 is installed with an inner mounting plate 401, and a plurality of middle mounting rods 402 are installed on the inner mounting plate 401, and the other end of the middle mounting rod 402 is installed with an outer mounting plate 403. A guide rail 404 is installed on the inner plate 401, and end seats 405 are provided at the upper and lower ends of the guide rail 404. A screw rod 406 is rotatably provided on the end seat 405, and a rotating cap 407 is provided at one end of the screw rod 406. A moving seat 408 is threadedly connected to the screw rod 406, and a sliding sleeve 409 is installed on the inner side end of the moving seat 408. The moving seat 408 is sleeved on the guide rail 404, and a movable arm 410 is provided on the sliding sleeve 409. The movable arm 410 is provided with a transverse hole 411, and an action rod 412 is inserted in the transverse hole 411. A swing arm 413 is provided at the inner side end of the action rod 412, and a ring sleeve 414 is provided at the other end of the swing arm 413. An inner pin 415 is inserted into the ring sleeve 414, and a rotating cap 407 is inserted in the ring sleeve 414. The movable tube 416 and the rotating tube 416 are passed through the installation inner plate 401, and a turntable 417 is provided at the inner end of the rotating tube 416. The turntable 417 is provided with oblique holes 418 in a circular array. There is an angle between the length direction of the oblique holes 418 and the radial direction of the turntable 417. An outer support rod 419 is passed through the oblique hole 418, and a movable inner plate 428 is provided at the inner end of the outer support rod 419. A pair of movable inner rods 438 are provided on the movable inner plate 428, and an inner top arc plate 430 is provided at the inner end of each pair of movable inner rods 438. During welding, the outer wall of the inner top arc plate 430 acts on the inner wall of the rod body 92. A plurality of pairs of guide strip holes 431 are provided on the installation middle rod 402, and the movable inner rod 438 is passed through the guide strip holes 431.

[0045] A pair of inner pull rods 420 are provided on the turntable 417, and an inner vertical plate 421 is sleeved on the inner pull rod 420. An effective long hole 422 is opened on the inner vertical plate 421, and the inner pull rod 420 is inserted into the effective long hole 422. An inner pull arm 423 is installed on the inner vertical plate 421, and an inner pull seat 424 is installed at the outer end of the inner pull arm 423. A pair of connecting guide rods 425 are provided on the inner side end of the connecting guide rod 425, and a limiting outer plate 427 is provided on the inner wall of the inner pressure plate 426. Two pairs of inner pull guide holes 432 are respectively opened at both ends of the mounting outer plate 403, and the connecting guide rods 425 are inserted into the inner pull guide holes 432. The length direction of the inner pull guide holes 432 is parallel to the long end direction of the mounting outer plate 403.

[0046] A pair of racks 437 are respectively installed at both ends of the inner pull seat 424, and a gear 436 is meshed on the rack 437. The gear 436 is coaxially provided with a rotating shaft 433. The inner end of the rotating shaft 433 is eccentrically provided with an inner pressure wheel 434. The inner pressure wheel 434 is located on the inner side of the mounting outer plate 403. The inner end of the inner pressure wheel 434 is provided with an annular convex edge 435. A limited long groove 441 is provided on the rack 437 along its length direction. A limiting rod 439 is inserted in the limiting long groove 441. The limiting rod 439 is arranged on the mounting outer plate 403.

[0047] A concave end seat 429 is installed at each end of the inner pull seat 424, and a pair of push-pull arms 448 are provided on the concave end seat 429, and an action pin 447 is provided at the inner end of the push-pull arm 448; the rotating shaft 433 is a spline structure, and a gear 436 is sleeved on the rotating shaft 433, and a spline sleeve is coaxially provided on the gear 436, and the spline sleeve is rotatably arranged on the mounting outer plate 403; a pair of limit rings 442 are provided at the outer end of the rotating shaft 433, and a A concave pull seat 444 and a limit ring 442 are located on the inner and outer sides of the concave pull seat 444. An outer pull transverse groove 445 is provided on the concave pull seat 444. An outer end of the outer pull transverse groove 445 is provided with an outer pull inclined groove 446. The outer end of the outer pull inclined groove 446 is inclined inwardly. An action pin 447 moves in the outer pull inclined groove 446 and the outer pull transverse groove 445. A plurality of extending guide rods 440 are passed through the concave pull seat 444. The inner ends of the extending guide rods 440 are installed on the mounting outer plate 403.

[0048] Combination Figure 1 and Fig.14 As shown, the bracket 5 includes a mounting lower plate 50, the upper end of which is mounted with a vertical rod 51, the upper end of which is provided with a connecting head 52, and the upper end of which is provided with a placement arc plate 53. During welding, the rod body 92 is placed on the placement arc plate 53.

[0049] In this embodiment, Fig.15 The welding of the three-way column 9 is carried out in the following manner.

[0050] Step 1: Fix the rectangular base 90 and the rod body 92 by the clamp 4. After fixation, the other end of the rod body 92 is placed on the arc plate 53.

[0051] Specifically, when the clamp 4 fixes the rectangular base 90 and the rod 92: In step 10 , the operator places the rectangular base 90 between the inner pressure plate 426 and the inner pressure wheel 434 .

[0052] In step 11 , the operator inserts the rod body 92 into the hole of the rectangular base 90 , and when inserting the rod body 92 , sleeves the rod body 92 on the inner top arc plate 430 .

[0053] In step 12, the operator rotates the rotating cap 407. When the rotating cap 407 rotates, it will drive the screw rod 406 to rotate. The rotation of the screw rod 406 will drive the movable seat 408 to move downward along the guide rail 404. The downward movement of the movable seat 408 will act on the action rod 412 through the transverse hole 411, so that the swing arm 413 swings downward. During the swinging process, it will drive the rotating tube 416 to rotate. The rotation of the rotating tube 416 will drive the turntable 417 to rotate. When the turntable 417 rotates, the oblique hole 418 will act on the outer support rod 419, so that the inner top arc plate 430 moves outward along the guide strip hole 431, and then the inner top arc plate 430 acts on the end of the rod body 92, thereby achieving the purpose of positioning the rod body 92.

[0054] At the same time, when the turntable 417 rotates, the inner pull rod 420 thereon will act on the acting long hole 422, so that the inner pull seats 424 will approach each other. As the inner pull seats 424 approach each other, the inner pressure plate 426 will approach the two ends of the rectangular base 90 and be pressed against the rectangular base 90 through the inner wall of the inner pressure plate 426.

[0055] At the same time, when the inner pull seats 424 approach each other, the rack 437 will move inward, and the inward movement of the rack 437 will drive the gear 436 to rotate. The rotation of the gear 436 will drive the inner pressure wheel 434 to rotate through the rotating shaft 433, and finally make the far end point of the inner pressure wheel 434 act on the upper and lower side walls of the rectangular base 90, wherein the far end point of the inner pressure wheel 434 is the point at which the outer circumference of the inner pressure wheel 434 is the farthest away from the center of the rotating shaft 433.

[0056] At the same time, when the inner pull seat 424 approaches each other, the inner pressure wheel 434 will rotate so that the distal end point of the inner pressure wheel 343 approaches the side wall of the rectangular base 90. In addition, the action pin 447 first moves in the outer pull inclined groove 446, thereby making the concave pull seat 444 move away from the mounting outer plate 403, and making the annular convex edge 435 approach the rectangular base 90, and finally limiting the rectangular base 90 through the annular convex edge 435.

[0057] In step 2, the operator welds the rectangular base 90 and the rod body 92. During welding, the operator cancels the azimuth angle lock of the rotating disk 26 by the locking mechanism 3 as needed. When the adjustment is completed, the locking mechanism 3 is used to lock it again until the rod body 92 is fully welded to the rectangular base 90.

[0058] Specifically, when the locking mechanism 3 cancels the locking of the rotating disk 26 , the operator rotates the outer pull recess 309 through the handle rod 310 , which acts on the outer pull pin 306 through the bar hole 311 thereon, thereby moving the latch pin 304 out of the insertion hole 29 .

[0059] In step 3, the operator welds the rib plate 91 to the rod body 92 and the rectangular base 90 in sequence. During welding, the rod body 92 and the clamp 4 are rotated.

[0060] Step 4: The operator fixes the connecting mechanism 6 on the rod body 92 .

[0061] Specifically, when fixing, the lower plate 60 is lifted by a simple support frame such as a tripod, or a crane; then the connecting seat 67 is moved inward, and the clamping arc groove of the connecting seat 67 acts on the outer wall of the rod body 92, and then the connection and fixation between the connecting seats 67 are performed by screws 69.

[0062] Step 5: The operator fixes the support arm 94 on the connecting mechanism 6 through the limiting mechanism 7.

[0063] Specifically, when fixing the support arm 94 , the support arm 94 is placed on the arc pad 71 , and then the downward arc plate 76 is placed on the support arm 94 , and then the limit screw 73 is passed through the connecting convex plate 75 , and the limit screw 73 is screwed on the concave seat 70 .

[0064] In step 6, the operator fixes the mounting plate 97 on the end vertical plate 63 through the end locking mechanism 8. When fixing, it is necessary to ensure that the outer wall of the mounting plate 97 is tightly pressed against the inner wall of the end vertical plate 63.

[0065] Specifically, when placing and fixing the mounting plate 97, the operator places the mounting plate 97 between the limit blocks 802, and then rotates the inner top rotating plate 810 to move the limit blocks 802 inward and make the conical head 815 coaxial with each mounting hole, and then rotates the concave top plate 813. The rotation of the concave top plate 813 will cause the outer pull plate 806 to move outward, and act on the inner periphery of the mounting hole through the conical head 815, and finally complete the fixing of the mounting plate 97.

[0066] In step 7 , the operator inserts the welding block 96 into the rectangular hole 98 and performs spot welding operation between the welding block 96 and the mounting plate 97 .

[0067] Step 8, the operator moves the support arm 94 to ensure that the welding plate at the end of the V-shaped plate 95 is inserted into the support arm 94, and the other end of the support arm 94 is inserted into the sleeve 93. After the adjustment is completed, the welding plate is welded in the support arm 94, and the support arm 94 and the sleeve 93 are spot welded together. During spot welding, it is also necessary to ensure that the sleeve 93 and the rod body 92 have a sufficient welding gap, and after the above spot welding operation is completed, the sleeve 93 is spot welded on the rod body 92.

[0068] In step 9, the operator rotates the rod body 92 and other components to perform full welding of the support arm 94, sleeve 93, rod body 92, welding block 96 and rectangular hole 98. During the welding process, the rod body 92 is rotated as needed.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A three-way column assembly welding positioning device, the three-way column (9) comprising a rectangular base (90), a rod body (92) welded to the rectangular base (90), a pair of sleeves (93) welded to the other end of the rod body (92), a support arm (94) inserted and welded in the sleeve (93), a V-shaped plate (95) welded to the other end of the support arm (94), a welding block (96) formed at the other end of the V-shaped plate (95), the plane where the welding block (96) on the V-shaped plate (95) is located is an inclined surface, a mounting plate (97) is sleeved on the welding block (96), a rectangular hole (98) is opened on the mounting plate (97), the welding block (96) is inserted into the rectangular hole (98), two rows of mounting holes are opened on the mounting plate (97), and the lower wall of the mounting plate (97) contacts the inclined surface of the V-shaped plate (95); Features: The device comprises a connecting mechanism (6) mounted on the other end of the rod body (92), and a pair of limiting mechanisms (7) and a pair of end locking mechanisms (8) are provided on the connecting mechanism (6). During welding, the limiting mechanism (7) is used to limit the position of the support arm (94), and the end locking mechanism (8) is used to limit the position of the mounting plate (97); The connecting mechanism (6) comprises a lower plate (60), two pairs of guide holes (61) are formed on the lower plate (60), movable rods (65) are inserted into the guide holes (61), a lower movable plate (66) is mounted on the lower end of each pair of movable rods (65), the lower movable plate (66) is located on the lower side of the lower plate (60), a connecting seat (67) is mounted on the upper end of each pair of movable rods (65), a clamping arc groove is formed on the inner wall of the connecting seat (67), a connecting plate (68) is disposed on the upper end of the connecting seat (67), the connecting plates (68) are connected and fixed by a plurality of screws (69), and during welding, the inner wall of the connecting seat (67) acts on the outer periphery of the rod body (92); The lower plate (60) is provided with a mounting vertical plate (62), and an end vertical plate (63) is mounted on the mounting vertical plate (62). The end vertical plate (63) is arranged in an inclined manner, and four pairs of vertical guide holes (64) are respectively opened at both ends of the end vertical plate (63). When welding, the outer wall of the mounting plate (97) is closely attached to the inner wall of the end vertical plate (63); The limiting mechanism (7) comprises a concave seat (70), a U-shaped groove (72) is provided on the vertical section of the concave seat (70), an arc-shaped pad (71) is provided between the vertical sections of the concave seat (70), a pair of limiting screws (73) are inserted into the upper end of one of the vertical sections of the concave seat (70), an end cap (74) is provided at one end of the limiting screw (73), the other end of the limiting screw (73) is connected to the upper end of the other vertical section of the concave seat (70) through a thread, a connecting convex plate (75) is sleeved on the limiting screw (73), and a downward pressing arc plate (76) is provided at the inner side end of the connecting convex plate (75); The end locking mechanism (8) comprises a pull rod (800) which is inserted into the vertical guide hole (64); a first nut (801) is provided at the outer end of the pull rod (800); a limit block (802) is provided at the inner end of each pair of pull rods (800); an inner extension plate (803) is provided on the inner wall of the limit block (802); a plurality of inner rods (804) are provided on the inner wall of the inner extension plate (803); a conical head (815) is provided at the inner end of the inner rod (804); during welding, the circumference of the conical head (815) acts on the inner circumference of the mounting hole; an outer end of the pull rod (800) at the same end is sleeved with an outer pull plate (806); a pair of waist-shaped holes (807) are respectively opened at the upper and lower ends of the outer pull plate (806); the outer end of the pull rod (800) is inserted into the waist-shaped hole (807); and a push plate (808) is provided at the outer end of each pair of pull rods (800). The push plate (808) is located on the outside of the outer pull plate (806) and on the inside of the first nut (801). The upper and lower ends of the outer pull plate (806) are respectively provided with rotating rods (809). The outer end of the rotating rod (809) is rotatably provided with an inner top rotating plate (810). The inner end of the inner top rotating plate (810) is formed with a push platform (814). The inner end of the push platform (814) is in an arc-shaped structure. The end of the push platform (814) acts on the push plate (808). The outer pull plate (806) is provided with a pair of rotating protrusions (811). The rotating protrusions (811) are provided with connecting rotating rods (812). The two ends of the connecting rotating rod (812) are rotatably provided with concave top plates (813). The inner end of the concave top plate (813) is in an arc-shaped structure. The inner end of the concave top plate (813) acts on the outer wall of the end vertical plate (63).

2. The three-way column assembly welding and positioning device according to claim 1 is characterized in that: The device further comprises a base plate (1), a base body (2) being mounted on one end of the base plate (1), a pair of locking mechanisms (3) being provided on the base body (2), a clamp (4) being rotatably provided on the base body (2), a bracket (5) being mounted on the base plate (1), and during welding, one end of the rod body (92) is disposed on the clamp (4) and the other end of the rod body (92) is placed on the bracket (5).

3. The three-way column assembly welding positioning device according to claim 2 is characterized in that: The seat body (2) comprises a lower mounting plate (20) mounted on the bottom plate (1), a vertical plate (21) being provided on the lower mounting plate (20), side plates (22) being provided on both sides of the vertical plate (21), the lower ends of the side plates (22) being arranged on both sides of the lower mounting plate (20), a middle sleeve (23) being installed on the vertical plate (21), a limiting end plate (24) being provided at the inner end of the middle sleeve (23), a rotating ring (27) being rotatably provided on the middle sleeve (23), a rotating disk (26) being provided at the inner end of the rotating ring (27), the limiting end plate (24) being located at the inner side of the rotating disk (26), a limiting outer ring (28) being provided at the outer periphery of the rotating disk (26), an insertion hole (29) being provided at the outer periphery of the limiting outer ring (28), a limiting inner ring (25) being installed at the inner side of the vertical plate (21), the limiting inner ring (25) being located at the inner side of the limiting outer ring (28).

4. The three-way column assembly welding positioning device according to claim 3 is characterized in that: The locking mechanism (3) comprises a locking mounting seat (300) mounted on the vertical plate (21), a lug (307) being provided at the outer end of the locking mounting seat (300), a hinge shaft (308) being provided at the outer end of the lug (307), an outer pull recess (309) being rotatably provided on the hinge shaft (308), a strip hole (311) being provided at the inner end of the outer pull recess (309), an outer pull pin (306) being inserted into the strip hole (311), a handle bar (310) being provided at the outer end of the outer pull recess (309), and the outer pull recess (309) being provided with a handle bar (310). A pull-out rod (302) is provided on the pull-out rod (302), a round head plate (301) is sleeved on the pull-out rod (302), the round head plate (301) is arranged on the outer end of the locking mounting seat (300), an inner plate (303) is provided on the inner end of the pull-out rod (302), a spring (305) is sleeved on the pull-out rod (302), the spring (305) is located between the inner plate (303) and the round head plate (301), a latch (304) is provided on the inner plate (303), and the latch (304) is inserted into the insertion hole (29).

5. The three-way column assembly welding and positioning device according to claim 3 is characterized in that: The fixture (4) comprises a pair of fixed plates (400) mounted on the rotating disk (26); an inner mounting plate (401) is mounted on the other end of the fixed plates (400); a plurality of middle mounting rods (402) are mounted on the inner mounting plate (401); and an outer mounting plate (403) is mounted on the other end of the middle mounting rods (402); A guide rail (404) is installed on the installation inner plate (401), and end seats (405) are provided at the upper and lower ends of the guide rail (404). A screw rod (406) is rotatably provided on the end seat (405), and a rotating cap (407) is provided at one end of the screw rod (406). A movable seat (408) is connected to the screw rod (406) by a thread, and a sliding sleeve (409) is installed at the inner side end of the movable seat (408). The movable seat (408) is sleeved on the guide rail (404), and a movable arm (410) is provided on the sliding sleeve (409). The movable arm (410) is provided with a transverse hole (411), and an action rod (412) is inserted in the transverse hole (411). A swing arm (413) is provided at the inner side end of the action rod (412), and a ring sleeve (414) is provided at the other end of the swing arm (413). An inner pin (415) is inserted into the ring sleeve (414), and the inner pin (415) is inserted into the ring sleeve (414). A rotating tube (416) is provided through the rotating tube (416), which is provided through the mounting inner plate (401). A rotating disk (417) is provided at the inner end of the rotating tube (416). The rotating disk (417) is provided with oblique holes (418) in a circumferential array. An angle is formed between the length direction of the oblique holes (418) and the radial direction of the rotating disk (417). An outer support rod (419) is provided through the oblique holes (418). A movable inner plate (428) is provided at the inner end, a pair of movable inner rods (438) are provided on the movable inner plate (428), an inner top arc plate (430) is provided at the inner end of each pair of movable inner rods (438), and during welding, the outer wall of the inner top arc plate (430) acts on the inner wall of the rod body (92), a plurality of pairs of guide bar holes (431) are provided on the mounting middle rod (402), and the movable inner rods (438) are inserted into the guide bar holes (431).

6. The three-way column assembly welding positioning device according to claim 5, characterized in that: A pair of inner pull rods (420) are provided on the rotating disk (417), and an inner vertical plate (421) is sleeved on the inner pull rods (420). An effective long hole (422) is opened on the inner vertical plate (421), and the inner pull rods (420) are inserted into the effective long hole (422). An inner pull arm (423) is installed on the inner vertical plate (421), and an inner pull seat (424) is installed on the outer end of the inner pull arm (423). The inner pull seat (424) is provided with A pair of connecting guide rods (425), the inner ends of the connecting guide rods (425) are provided with inner pressure plates (426), the inner wall of the inner pressure plate (426) is provided with a limiting outer plate (427), two pairs of inner pull guide holes (432) are respectively opened at both ends of the mounting outer plate (403), the connecting guide rods (425) are inserted into the inner pull guide holes (432), and the length direction of the inner pull guide holes (432) is parallel to the long end direction of the mounting outer plate (403).

7. The three-way column assembly welding and positioning device according to claim 6, characterized in that: A pair of racks (437) are respectively installed at both ends of the inner pull seat (424), and a gear (436) is meshed on the rack (437). The gear (436) is coaxially provided with a rotating shaft (433), and an inner pressure wheel (434) is eccentrically provided at the inner end of the rotating shaft (433). The inner pressure wheel (434) is located on the inner side of the mounting outer plate (403), and an annular convex edge (435) is provided at the inner end of the inner pressure wheel (434).

8. The three-way column assembly welding positioning device according to claim 7 is characterized in that: A concave end seat (429) is respectively installed at both ends of the inner pull seat (424), a pair of push-pull arms (448) are provided on the concave end seat (429), and an action pin (447) is provided at the inner end of the push-pull arm (448); The rotating shaft (433) is a spline-shaped structure, the gear (436) is sleeved on the rotating shaft (433), and a spline sleeve is coaxially provided on the gear (436), and the spline sleeve is rotatably arranged on the mounting outer plate (403); A pair of limiting rings (442) are provided at the outer end of the rotating shaft (433), and a concave pull seat (444) is provided at the outer end of the rotating shaft (433). The limiting rings (442) are located at the inner and outer sides of the concave pull seat (444). An outer pull transverse groove (445) is provided on the concave pull seat (444), and an outer pull inclined groove (446) is provided at the outer end of the outer pull transverse groove (445). The outer end of the outer pull inclined groove (446) is inclined inwardly, and an action pin (447) moves in the outer pull inclined groove (446) and the outer pull transverse groove (445). A plurality of outwardly extending guide rods (440) are passed through the concave pull seat (444), and the inner ends of the outwardly extending guide rods (440) are mounted on the mounting outer plate (403).

9. The three-way column assembly welding positioning device according to claim 2, characterized in that: The bracket (5) includes a mounting plate (50) mounted thereon, a vertical rod (51) being mounted on the upper end of the mounting plate (50), a connecting head (52) being provided at the upper end of the vertical rod (51), and a placement arc plate (53) being provided at the upper end of the connecting head (52). During welding, the rod body (92) is placed on the placement arc plate (53).

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