A three-way column assembly and welding positioning device

Abstract

A three-way column assembly welding positioning device belongs to the field of welding technology, which includes a connecting mechanism installed on the other end of a rod body, and 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 support arm, and the end locking mechanism is used to limit the mounting plate. The connecting mechanism is installed at the end of the rod body in an embracing manner. After 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. The present invention facilitates the positioning of the various components of the three-way column to ensure the accuracy after welding, and after positioning, the rod body and other components can be rotated, thereby facilitating the operator to implement welding and significantly improving the welding efficiency of the three-way column.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and particularly to a positioning device for assembling and welding a tee-shaped column. Background Art

[0002] As Figures 15 to 17 shown, it is a display diagram of a tee-shaped column and its internal components. As can be seen from the figure, the tee-shaped column 9 includes a rectangular base 90, a rod 92 is welded on the rectangular base 90, a rib plate 91 is welded between the rod 92 and the rectangular base 90, a pair of sleeves 93 are welded at the other end of the rod 92, there is an included angle between the axes of the sleeves 93, and the included angle is an obtuse angle. A support arm 94 is inserted and welded in the sleeve 93, a V-shaped plate 95 is welded at 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 is located on the V-shaped plate 95 is an inclined plane, 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 plane of the V-shaped plate 95. Among them, the tee-shaped column 9 is used for supporting a photovoltaic shed, the rectangular base 90 at its lower end is installed on a base through bolts, and the skeleton of the photovoltaic shed is installed on the mounting plate 97 through bolts. In order to facilitate rainwater drainage and improve the light absorption and conversion effect, the photovoltaic shed is often set in an inclined posture. In order to ensure that the photovoltaic shed is in an inclined posture, the planes where the upper end faces of the two mounting plates 97 are located are inclined, and the inclination angle is determined by the inclined plane of the V-shaped plate 95. Among them, between the above-mentioned rod 92 and rib plate 91, between the rod 92 and the rectangular base 90, between the sleeve 93 and the rod 92, between the sleeve 93 and the support arm 94, between the support arm 94 and the V-shaped plate 95, and between the V-shaped plate 95 and the mounting plate 97 are all welded by welding. Among them, the welding precision between the sleeve 93 and the rod 92, between the sleeve 93 and the support arm 94, between the support arm 94 and the V-shaped plate 95, and between the V-shaped plate 95 and the mounting plate 97 will directly affect the welding precision of the entire tee-shaped column 9. During the welding process, how to effectively and highly precisely fix the relative positions between the support arm 94 and the rod 92, between the support arm 94 and the V-shaped plate 95, and between the V-shaped plate 95 and the mounting plate 97 becomes the key to welding precision control. In addition, how to facilitate welding operations during welding. For example, during welding, in order to perform overall welding on the welding position, it is necessary to continuously adjust the posture of the tee-shaped column 9, and the posture adjustment during the entire welding process will take a large amount of working time, resulting in a low welding efficiency of the tee-shaped column 9. Summary of the Invention

[0003] The present invention provides a positioning device for assembling and welding a tee-shaped column to solve the above-mentioned deficiencies of the prior art, which can improve the welding efficiency and welding precision of the tee-shaped column and has strong practicability.

[0004] To achieve the object of the present invention, the following techniques are proposed:

[0005] A three-way column group welding positioning device includes a connection mechanism installed at the other end of the rod body. A pair of limiting mechanisms and a pair of end locking mechanisms are provided on the connection mechanism. During welding, the limiting mechanism is used for limiting the support arm, and the end locking mechanism is used for limiting the mounting plate. Among them, the connection mechanism is installed at the end of the rod body in a surrounding manner. After the connection mechanism and the rod body are connected, the subsequent inclination angle of the support arm is fixed by the limiting mechanism, so as to facilitate the welding operation. And during welding, since the support arm is fixed, the welding accuracy is improved. The end locking structure plays a positioning effect on the mounting plate to ensure the welding accuracy between the V-shaped plate and the fixing plate.

[0006] Furthermore, the connection mechanism includes a lower plate. The lower plate has a plurality of hollow parts to facilitate the welding implementation at each welding position on the three-way column. Two pairs of guiding holes are opened on the lower plate. A movable rod is inserted into the guiding hole. The lower end of each pair of movable rods is provided with a lower movable plate, and the lower movable plate is located on the lower side of the lower plate. The upper end of each pair of movable rods is provided with a connection seat. A clamping arc groove is opened on the inner wall of the connection seat, and the inner circumference of the clamping arc groove closely adheres to the outer circumference of the rod body for clamping and fixing the rod body. In order to ensure the stability after surrounding and fixing, anti-slip patterns 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 tapered structure design, the structure design of the clamping arc groove can be carried out according to needs. The upper end of the connection seat is provided with a connecting plate, and the connecting plates are connected and fixed by a plurality of screws. During welding, the inner wall of the connection seat acts on the outer circumference of the rod body.

[0007] Furthermore, an installation vertical plate is provided on the lower plate, and an end vertical plate is installed on the installation vertical plate. The end vertical plate is inclined. Four pairs of vertical guiding holes are respectively opened at both ends of the end vertical plate. During welding, the outer wall of the mounting plate closely adheres 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 this angle is greater than 45 degrees.

[0008] Furthermore, the limiting mechanism includes a concave seat. A U-shaped groove is formed in the vertical section of the concave seat. An arc-shaped backing plate is provided between the vertical sections of the concave seat. The arc-shaped backing plate plays a supporting role for the support arm, and after fixation, it improves the clamping and fixing effect by expanding the contact area. In addition, since the concave seat is installed strictly according to the inclination angle of the support arm, the accuracy during the welding of the support arm 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 threadedly connected to the upper end of the other vertical section of the concave seat. A connecting convex plate is sleeved on the limiting screw, and a pressing arc plate is provided at the inner end of the connecting convex plate. This design method facilitates the placement of the support arm and the positioning of the support arm after placement.

[0009] 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 limiting block is provided at the inner end of each pair of pull rods. An inward extending plate is provided on the inner wall of the limiting block. A plurality of inner rods are provided on the inner wall of the inward extending plate. A tapered head is provided at the inner end of the inner rod. During welding, the periphery of the tapered head acts on the inner periphery of the mounting hole. Through the setting of the tapered head, the influence of the machining accuracy of the mounting hole on the welding accuracy of the mounting plate can be reduced. In addition, when the tapered head positions the mounting hole, it can position the mounting plate in all directions, thereby improving the accuracy during welding. An outer pulling plate is sleeved on the outer end of the pull rods at the same end. A pair of waist-shaped holes are respectively formed at the upper and lower ends of the outer pulling plate. The outer end of the pull rod passes through the waist-shaped hole. A pushing plate is provided at the outer end of each pair of pull rods. The pushing plate is located outside the outer pulling plate and inside the first nut. Rotating rods are respectively provided at the upper and lower ends of the outer pulling plate. An inner top rotating plate is rotatably provided at the outer end of the rotating rod. A pushing platform is formed at the inner end of the inner top rotating plate. The inner end of the pushing platform is of an arc-shaped structure. The end of the pushing platform acts on the pushing plate. A pair of rotating protrusions are provided on the outer pulling plate. A connecting rotating rod is provided on the rotating protrusion. Concave top plates are rotatably provided at both ends of the connecting rotating rod. The inner end of the concave top plate is of an arc-shaped structure. The inner end of the concave top plate acts on the outer wall of the end vertical plate. Through the setting of the concave top plate and the inner top rotating plate, it is convenient to quickly position the mounting plate through the tapered head and quickly open and close the limiting block, thereby facilitating the placement and positioning operations of the mounting plate.

[0010] Furthermore, as can be seen from the above description, it is only by rotating the rod body during welding that the complete welding operation between various components can be facilitated. To achieve the above effect, this set of welding positioning devices further includes a bottom plate. One end of the bottom plate is provided with a seat body. A pair of locking mechanisms are provided on the seat body. A clamp is rotatably provided on the seat body. A bracket is installed on the bottom plate. During welding, one end of the rod body is placed on the clamp, and the other end of the rod body is placed on the bracket. Among them, the clamp is used to fix the rectangular base and the rod body part, and after being fixed, the rod body can rotate around its axis, thus facilitating the complete welding operation between 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 on the clamp so as not to affect the welding accuracy.

[0011] Furthermore, the seat body includes a lower mounting plate installed on the bottom plate. A vertical plate is provided on the lower mounting plate. Side plates are respectively provided on both sides of the vertical plate. The lower ends of the side plates are located on both sides of the lower mounting plate. A middle sleeve is installed on the vertical plate. A limiting end plate is provided at the inner end of the middle sleeve. A rotating ring is rotatably provided on the middle sleeve. A bearing is arranged between the middle sleeve and the rotating ring to ensure the flexibility of rotation. A rotating disc is provided at the inner end of the rotating ring. The limiting end plate is located inside the rotating disc to limit the rotating disc. A limiting outer ring is provided on the outer periphery of the rotating disc. A jack is provided on the outer periphery of the limiting outer ring. A limiting inner ring is installed inside the vertical plate. The limiting inner ring is located inside the limiting outer ring to further internally limit the rotating disc, thereby improving the stability of the rotation of the clamp.

[0012] Furthermore, the locking mechanism includes a locking mounting seat installed 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 pulling concave part is rotatably provided on the hinge shaft. A strip-shaped hole is provided at the inner end of the outer pulling concave part. An outer pulling pin is inserted through the strip-shaped hole. A handle rod is provided at the outer end of the outer pulling concave part. A pulling rod is provided on the outer pulling pin. A round head plate is sleeved on the pulling rod. The round head plate is located at the outer end of the locking mounting seat. An inner disc is provided at the inner end of the pulling rod. A spring is sleeved on the pulling rod. The spring is located between the inner disc and the round head plate. A plug pin is provided on the inner disc. The plug pin is inserted into the jack. The spring can automatically move the plug pin inward and perform the positioning operation of the rotating disc. The settings of the outer pulling concave part, the outer pulling pin and the pulling rod are for the operator to quickly cancel the rotation limit.

[0013] Furthermore, the clamp includes a pair of fixing plates installed on the rotating disc. The other end of the fixing plate is installed with an inner mounting plate. Multiple middle mounting rods are installed on the inner mounting plate. The other end of the middle mounting rod is installed with an outer mounting plate.

[0014] The inner installation plate is provided with guide rails. End seats are provided at the upper and lower ends of the guide rails. A lead screw is rotatably provided on the end seats. A rotating cap is provided at one end of the lead screw. Parts such as a dumbbell rod can be inserted through the rotating cap to facilitate the rotation operation of the lead screw. A moving seat is connected to the lead screw by threads. A sliding sleeve is installed at the inner end of the moving seat. The moving seat is sleeved on the guide rail. An active arm is provided on the sliding sleeve. A transverse hole is opened on the active arm. An acting rod is inserted through the transverse hole. A swinging arm is provided at the inner end of the acting rod. When the active arm moves, it can act on the acting rod through the transverse hole, so that the swinging arm rotates. A ring sleeve is provided at the other end of the swinging arm. An inner through pin is inserted into the ring sleeve. A rotating tube is inserted into the ring sleeve. The rotating tube is inserted through the inner installation plate. A turntable is provided at the inner end of the rotating tube. Oblique holes are arranged in a circumferential array on the turntable. There is an included angle between the length direction of the oblique hole and the radial direction of the turntable. An outer support rod is inserted through the oblique hole. A moving inner plate is provided at the inner end of the outer support rod. A pair of moving inner rods are provided on the moving inner plate. Inner top arc plates are provided at the inner ends of each pair of moving inner rods. The structure of the outer wall of the inner top arc plate matches the structure of the inner wall of the rod body, and anti-slip patterns can be provided on the outer wall of the inner top arc plate to ensure that there is no relative sliding 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. Multiple pairs of guiding strip holes are opened on the installation middle rod. The moving inner rods are inserted through the guiding 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 outwards, so as to fix the rod body sleeved on the inner top arc plate. After fixing, it can be ensured that the axial direction of the rod body coincides with the axial direction of the rotating disk.

[0015] Furthermore, in order to position the rectangular base and improve the perpendicularity after welding the rectangular base and the rod body, that is, the axial direction of the rod body and the plane of the rectangular base are perpendicular after welding. Therefore, a pair of inner pull rods are provided on the turntable. An inner vertical plate is sleeved on the inner pull rods. An acting long hole is opened on the inner vertical plate. The inner pull rods are inserted through the acting long hole. An inner pull arm is installed on the inner vertical plate. An inner pull seat is installed at the outer end of the inner pull arm. A pair of connecting guide rods are provided on the inner pull seat. An inner pressing plate is provided at the inner end of the connecting guide rods. A limiting outer plate is provided on the inner wall of the inner pressing plate. Two pairs of inner pull guide holes are respectively opened at both ends of the installation outer plate. The connecting guide rods are inserted through the inner pull guide holes. 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, it will act on the acting long hole through the inner pull rods, so that the inner wall of the inner pressing plate closely adheres to the end of the rectangular base, so as to fix the position of the rectangular base. After fixing, the hole opened on the rectangular base coincides with the axial direction of the rotating disk, so as to ensure the welding accuracy between the rod body and the base. Among them, the root of the rod body is inserted into this hole during welding to ensure the welding effect between the two.

[0016] Further, it can be seen from the above components that both ends of the rectangular base are limited, while its upper and lower side walls are not restricted. Therefore, it is impossible to ensure the axial alignment of the holes on the rectangular base and the axial alignment of the rotating disk. A pair of racks are respectively installed at both ends of the inner pull seat. Gears are engaged with the racks. A rotating shaft is coaxially arranged on the gears. An inner pressing wheel is eccentrically arranged at the inner end of the rotating shaft. The inner pressing wheel is located inside the mounting outer plate. A ring convex edge is arranged at the inner end of the inner pressing wheel. The circumferential side of the inner pressing wheel can act on the upper and lower side walls of the rectangular base to completely position the rectangular base. The convex edge is provided to ensure the stability of the rectangular base after being fixed.

[0017] Further, a concave end seat is respectively installed at both ends of the inner pull seat. A pair of push-pull arms are arranged on the concave end seat. An acting pin is arranged at the inner end of the push-pull arm. The rotating shaft has a spline structure. The gear is sleeved on the rotating shaft. A spline sleeve is coaxially arranged on the gear. The spline sleeve is rotatably arranged on the mounting outer plate. A constraint ring is connected to the spline sleeve through a pin. The constraint ring plays a role in limiting the axial position of the spline sleeve. A pair of limit rings are arranged at the outer end of the rotating shaft. A concave pull seat is arranged at the outer end of the rotating shaft. The limit rings are located on the inner and outer sides of the concave pull seat. An outer pull horizontal groove is opened on the concave pull seat. An outer pull inclined groove is opened at the outer end of the outer pull horizontal groove. The outer end of the outer pull inclined groove inclines inwards. The acting pin moves in the outer pull inclined groove and the outer pull horizontal groove. Multiple outer extension guide rods penetrate through the concave pull seat. The inner ends of the outer extension guide rods are installed on the mounting outer plate. By pulling the inner pressing wheel inwards, it is convenient to limit the rectangular base through the ring convex edge, and the placement of the rectangular base is facilitated through this design method.

[0018] Further, the bracket includes a mounting lower plate. A vertical rod is installed at the upper end of the mounting lower plate. A connecting head is arranged at the upper end of the vertical rod. A placing arc plate is arranged at the upper end of the connecting head. During welding, the rod body is placed on the placing arc plate. The rod body can be stably supported by the provided placing arc plate.

[0019] The advantages of the above technical solutions are as follows:

[0020] The present invention facilitates the positioning of each component of the three-way column to ensure the accuracy after welding. After positioning, components such as the rod body can rotate, which is convenient for operators to perform welding and significantly improves the welding efficiency of the three-way column. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings.

[0022] Figure 1 Shows a three-dimensional structure diagram of the group welding positioning device.

[0023] Figure 2The connection schematic diagram of the three-way column, connection mechanism, limit mechanism and end lock mechanism is shown. Among them, the position where the wavy line is located in the figure is the omission of a partial section of the rod body of the three-way column, and due to the conical structure of the rod body of the three-way column, the diameters of the two sections before and after the wavy line are not equal.

[0024] Figure 3 The three-dimensional structure diagram of the limit mechanism is shown.

[0025] Figure 4 The three-dimensional structure diagram of the end lock mechanism is shown. Among them, the position where the wavy line is located in the figure is the display of a partial intercept of the end vertical plate.

[0026] Figure 5 The three-dimensional structure diagram of the seat body, locking mechanism and fixture is shown.

[0027] Figure 6 The sectional structure diagram of the seat body is shown.

[0028] Figure 7 The three-dimensional structure diagram of the locking mechanism is shown.

[0029] Figure 8 The display diagram of the overall structure of the fixture is shown.

[0030] Figure 9 The display diagram of the internal structure of the fixture is shown.

[0031] Figure 10 The display diagram of the first part in the fixture is shown.

[0032] Figure 11 The display diagram of the second part in the fixture is shown.

[0033] Figure 12 The display diagram of the third part in the fixture is shown.

[0034] Figure 13 The display diagram of the fourth part in the fixture is shown.

[0035] Figure 14 The three-dimensional structure diagram of the bracket is shown.

[0036] Figure 15 The three-dimensional structure diagram of the three-way column is shown.

[0037] Figure 16 The three-dimensional structure diagram of the V-shaped plate on the three-way column is shown.

[0038] Figure 17 The three-dimensional structure diagram of the mounting plate is shown.

[0039] Explanation of reference numerals:

[0040] Bottom plate 1, seat body 2, locking mechanism 3, clamp 4, bracket 5, connecting mechanism 6, limiting mechanism 7, end locking mechanism 8, tee column 9, lower mounting plate 20, vertical plate 21, side plate 22, middle sleeve 23, limiting end plate 24, limiting inner ring 25, rotating disk 26, rotating ring 27, limiting outer ring 28, jack 29, locking mounting seat 300, round head plate 301, pull-out rod 302, inner disk 303, pin 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, mounting inner plate 401, mounting middle rod 402, mounting outer plate 403, guide rail 404, end seat 405, lead screw 406, rotating cap 407, moving seat 408, sliding sleeve 409, movable arm 410, transverse hole 411, acting rod 412, swing arm 413, ring sleeve 414, inner through pin 415, rotating tube 416, turntable 417, inclined hole 418, outer support rod 419, inner pull rod 420, inner vertical plate 421, acting long hole 422, inner pull arm 423, inner pull seat 424, connecting guide rod 425, inner pressing plate 426, limiting outer plate 427, moving inner plate 428, concave end seat 429, inner top arc plate 430, guiding strip hole 431, inner pull guide hole 432, rotating shaft 433, inner pressing wheel 434, ring convex edge 435, gear 436, rack 437, moving inner rod 438, limiting insertion 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, acting pin 447, push-pull arm 448, mounting lower disk 50, vertical rod 51, connecting head 52, placing arc plate 53, lower plate 60, guiding hole 61, mounting vertical plate 62, end vertical plate 63, vertical guiding hole 64, movable rod 65, lower movable plate 66, connecting seat 67, connecting plate 68, screw 69, concave seat 70, arc-shaped cushion plate 71, U-shaped groove 72, limiting screw 73, end cap 74, connecting convex plate 75, lower pressing arc plate 76, pull rod 800, first nut 801, limiting block 802, inner extending plate 803, inner rod 804, conical head 815, outer pull plate 806, kidney-shaped hole 807, top push plate 808, rotating rod 809, inner top rotating plate 810, rotating protrusion 811, connecting rotating rod 812, concave top plate 813, top push table 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 implementation mode

[0041] As Figure 1As shown in the figure, a positioning device for the group welding of a three-way column includes a connecting mechanism 6 installed at the other end of the rod body 92. 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 for limiting the support arm 94, and the end locking mechanism 8 is used for limiting the mounting plate 97. In addition, it further includes a bottom plate 1. One end of the bottom plate 1 is installed with a seat body 2. A pair of locking mechanisms 3 are provided on the seat body 2. A clamp 4 is rotatably provided on the seat body 2. A bracket 5 is installed on the bottom plate 1. During welding, one end of the rod body 92 is placed on the clamp 4, and the other end of the rod body 92 is placed on the bracket 5.

[0042] As Figure 2 shown, the connecting mechanism 6 includes a lower plate 60. Two pairs of guide holes 61 are opened on the lower plate 60. Moving rods 65 are inserted into the guide holes 61. The lower ends of each pair of moving rods 65 are installed with lower moving plates 66. The lower moving plates 66 are located on the lower side of the lower plate 60. The upper ends of each pair of moving rods 65 are installed with connecting seats 67. Clamping arc grooves are opened on the inner walls of the connecting seats 67. Connecting plates 68 are provided at the upper ends of the connecting seats 67. The connecting plates 68 are connected and fixed by a plurality of screws 69. During welding, the inner walls of the connecting seats 67 act on the outer periphery of the rod body 92. An installation vertical plate 62 is provided on the lower plate 60. An end vertical plate 63 is installed on the installation vertical plate 62. The end vertical plate 63 is inclined. Four pairs of vertical guide holes 64 are respectively opened at both ends of the end vertical plate 63. During welding, the outer wall of the mounting plate 97 is closely attached to the inner wall of the end vertical plate 63.

[0043] As Figure 3 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 backing plate 71 is provided between the vertical sections of the concave seat 70. A pair of limiting screw rods 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 rod 73. The other end of the limiting screw rod 73 is threadedly connected to the upper end of the other vertical section of the concave seat 70. A connecting convex plate 75 is sleeved on the limiting screw rod 73. A pressing arc plate 76 is provided at the inner end of the connecting convex plate 75.

[0044] As Figure 4As shown, the end locking mechanism 8 includes a pull rod 800 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 tapered head 815 is provided at the inner end of the inner rod 804. During welding, the periphery of the tapered head 815 acts on the inner periphery of the mounting hole. An outer pull plate 806 is sleeved on the outer end of the pull rods 800 at the same end. 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. A push plate 808 is provided at the outer end of each pair of pull rods 800. The push plate 808 is located outside the outer pull plate 806 and inside the first nut 801. Rotating rods 809 are respectively provided at the upper and lower ends of the outer pull plate 806. An inner top rotating plate 810 is rotatably provided at the outer end of the rotating rod 809. A top pushing table 814 is formed at the inner end of the inner top rotating plate 810. The inner end of the top pushing table 814 is of an arc structure. The end of the top pushing table 814 acts on the push plate 808. A pair of rotating protrusions 811 are provided on the outer pull plate 806. A connecting rotating rod 812 is provided on the rotating protrusion 811. Concave top plates 813 are rotatably provided at both ends of the connecting rotating rod 812. The inner end of the concave top plate 813 is of an arc structure. The inner end of the concave top plate 813 acts on the outer wall of the end vertical plate 63.

[0045] As Figure 1 , Figure 5 , Figure 6 As shown, the seat body 2 includes a lower mounting plate 20 mounted on the bottom 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. The lower ends of the side plates 22 are provided on both sides of the lower mounting plate 20. A middle sleeve 23 is mounted on the vertical plate 21. A limit 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 limit end plate 24 is located inside the rotating disk 26. A limit outer ring 28 is provided on the outer periphery of the rotating disk 26. A jack 29 is opened on the outer periphery of the limit outer ring 28. A limit inner ring 25 is mounted inside the vertical plate 21. The limit inner ring 25 is located inside the limit outer ring 28.

[0046] Combined with Figures 5 to 7As shown, the locking mechanism 3 includes a locking mounting seat 300 installed 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 externally pulled concave member 309 is rotatably provided on the hinge shaft 308. A strip-shaped hole 311 is formed at the inner end of the externally pulled concave member 309. An externally pulled pin 306 is inserted through the strip-shaped hole 311. A handle rod 310 is provided at the outer end of the externally pulled concave member 309. A pulling rod 302 is provided on the externally pulled pin 306. A round head plate 301 is sleeved on the pulling rod 302. The round head plate 301 is arranged on the outer end of the locking mounting seat 300. An inner disc 303 is provided at the inner end of the pulling rod 302. A spring 305 is sleeved on the pulling rod 302. The spring 305 is located between the inner disc 303 and the round head plate 301. A plug pin 304 is provided on the inner disc 303. The plug pin 304 is inserted into the jack 29.

[0047] Combined with Figure 5 and Figures 8 to 13 As shown, the fixture 4 includes a pair of fixing plates 400 installed on the rotating disc 26. The other end of the fixing plate 400 is installed with a mounting inner plate 401. A plurality of mounting middle rods 402 are installed on the mounting inner plate 401. The other end of the mounting middle rod 402 is installed with a mounting outer plate 403. A guide rail 404 is installed on the mounting inner plate 401. End seats 405 are provided at the upper and lower ends of the guide rail 404. A lead screw 406 is rotatably provided on the end seat 405. A rotating cap 407 is provided at one end of the lead screw 406. A moving seat 408 is threadedly connected to the lead screw 406. The inner end of the moving seat 408 is installed with a sliding sleeve 409. The moving seat 408 is sleeved on the guide rail 404. An active arm 410 is provided on the sliding sleeve 409. A transverse hole 411 is formed in the active arm 410. An acting rod 412 is inserted through the transverse hole 411. A swinging arm 413 is provided at the inner end of the acting rod 412. A ring sleeve 414 is provided at the other end of the swinging arm 413. An inner through pin 415 is inserted into the ring sleeve 414. A rotating tube 416 is inserted through the ring sleeve 414. The rotating tube 416 is inserted through the mounting inner plate 401. A turntable 417 is provided at the inner end of the rotating tube 416. Oblique holes 418 are formed in a circumferential array on the turntable 417. An included angle exists between the length direction of the oblique hole 418 and the radial direction of the turntable 417. An externally supporting rod 419 is inserted through the oblique hole 418. A moving inner plate 428 is provided at the inner end of the externally supporting rod 419. A pair of moving inner rods 438 are provided on the moving inner plate 428. An inner top arc plate 430 is provided at the inner end of each pair of moving 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 guiding strip holes 431 are formed in the mounting middle rod 402. The moving inner rod 438 is inserted through the guiding strip hole 431.

[0048] A pair of inner pull rods 420 are provided on the turntable 417. An inner vertical plate 421 is sleeved on the inner pull rods 420. An acting long hole 422 is formed on the inner vertical plate 421. The inner pull rods 420 pass through the acting long hole 422. An inner pull arm 423 is installed on the inner vertical plate 421. 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 pull seat 424. An inner pressure plate 426 is provided at the inner end of the connecting guide rod 425. 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 formed at both ends of the mounting outer plate 403. The connecting guide rods 425 pass through 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.

[0049] A pair of racks 437 are respectively installed at both ends of the inner pull seat 424. A gear 436 is engaged with the racks 437. A rotating shaft 433 is coaxially provided on the gear 436. An inner pressure wheel 434 is eccentrically provided at the inner end of the rotating shaft 433. The inner pressure wheel 434 is located inside the mounting outer plate 403. A ring convex edge 435 is provided at the inner end of the inner pressure wheel 434. A limiting long groove 441 is formed along the length direction of the rack 437. A limiting insertion rod 439 passes through the limiting long groove 441. The limiting insertion rod 439 is provided on the mounting outer plate 403.

[0050] 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. An acting pin 447 is provided at the inner end of the push-pull arm 448; The rotating shaft 433 is of a spline structure. The gear 436 is sleeved on the rotating shaft 433, and a spline sleeve is coaxially provided on the gear 436. 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. A concave pull seat 444 is provided at the outer end of the rotating shaft 433. The limiting rings 442 are located on the inner and outer sides of the concave pull seat 444. An outer pull horizontal groove 445 is formed on the concave pull seat 444. An outer pull inclined groove 446 is formed at the outer end of the outer pull horizontal groove 445. The outer end of the outer pull inclined groove 446 inclines inwards. The acting pin 447 moves in the outer pull inclined groove 446 and the outer pull horizontal groove 445. A plurality of outer extension guide rods 440 pass through the concave pull seat 444. The inner ends of the outer extension guide rods 440 are installed on the mounting outer plate 403.

[0051] Combined Figure 1 and Figure 14 As shown, the bracket 5 includes a mounting lower plate 50. A vertical rod 51 is installed at the upper end of the mounting lower plate 50. A connecting head 52 is provided at the upper end of the vertical rod 51. A placing arc plate 53 is provided at the upper end of the connecting head 52. During welding, the rod body 92 is placed on the placing arc plate 53.

[0052] In this embodiment, when welding the three-way column 9 as shown in Figure 15 , it is implemented in the following manner.

[0053] Step 1, fix the rectangular base 90 and the rod 92 with the fixture 4. After fixing, the other end of the rod 92 is placed on the placing arc plate 53.

[0054] Specifically, when the fixture 4 fixes the rectangular base 90 and the rod 92:

[0055] Step 10, the operator places the rectangular base 90 between the inner pressing plate 426 and the inner pressing wheel 434.

[0056] Step 11, the operator inserts the rod 92 into the hole of the rectangular base 90. When inserting, the rod 92 is sleeved on the inner top arc plate 430.

[0057] Step 12, the operator rotates the rotating cap 407. When the rotating cap 407 rotates, it will drive the lead screw 406 to rotate. The rotation of the lead screw 406 will drive the moving seat 408 to move downward along the guide rail 404. The downward movement of the moving seat 408 will act on the acting 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 inclined 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 further makes the inner top arc plate 430 act on the end of the rod 92, so as to achieve the purpose of positioning the rod 92.

[0058] Meanwhile, when the turntable 417 rotates, it will act on the acting long hole 422 through the inner pull rod 420 on it, and then make the inner pull seats 424 approach each other. As the inner pull seats 424 approach each other, the inner pressing plate 426 will approach both ends of the rectangular base 90 and press tightly on the rectangular base 90 through the inner wall of the inner pressing plate 426.

[0059] Meanwhile, when the inner pull seats 424 approach each other, the rack 437 will move inward. The inward movement of the rack 437 will drive the gear 436 to rotate. The rotation of the gear 436 will drive the inner pressing wheel 434 to rotate through the rotating shaft 433, and finally make the distal end point of the inner pressing wheel 434 act on the upper and lower side walls of the rectangular base 90. Among them, the distal end point of the inner pressing wheel 434 is the point on the outer circumference of the inner pressing wheel 434 with the largest distance from the center of the rotating shaft 433.

[0060] Meanwhile, when the inner pull seats 424 approach each other, the inner pressure wheels 434 will rotate so that the distal points of the inner pressure wheels 343 approach the side wall of the rectangular base 90. In addition, the acting pin 447 first moves within the outer pull inclined groove 446, causing the concave pull seat 444 to move away from the mounting outer plate 403, and the annular convex edge 435 to approach the rectangular base 90, and finally limiting the rectangular base 90 through the annular convex edge 435.

[0061] Step 2, the operator welds between the rectangular base 90 and the rod body 92. During welding, the operator unlocks the azimuth angle lock of the rotating disk 26 by the locking mechanism 3 as needed. After the adjustment is completed, the locking mechanism 3 is locked again until the rod body 92 is welded to the rectangular base 90 in a full-weld form.

[0062] Specifically, when the locking mechanism 3 unlocks the rotating disk 26, the operator rotates the outer pull recessed part 309 through the handle rod 310. During rotation, it will act on the outer pull pin 306 through the strip-shaped hole 311 thereon, thereby moving the plug pin 304 out of the jack 29.

[0063] Step 3, the operator welds the rib plates 91 to the rod body 92 and the rectangular base 90 in sequence. During welding, the rod body 92 and the fixture 4 are rotated.

[0064] Step 4, the operator fixes the connecting mechanism 6 to the rod body 92.

[0065] Specifically, during fixation, a simple support frame such as a tripod or a traveling crane is used to lift the lower plate 60; 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 connecting seats 67 are connected and fixed by screws 69.

[0066] Step 5, the operator fixes the support arm 94 to the connecting mechanism 6 through the limiting mechanism 7.

[0067] Specifically, when fixing the support arm 94, the support arm 94 is placed on the arc-shaped cushion plate 71, then the lower pressing arc plate 76 is placed on the support arm 94, and then the limiting screw rod 73 is inserted through the connecting convex plate 75 and screwed onto the concave seat 70.

[0068] Step 6, the operator fixes the mounting plate 97 to 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 abuts tightly against the inner wall of the end vertical plate 63.

[0069] Specifically, when placing and fixing the mounting plate 97, the operator places the mounting plate 97 between the limit blocks 802, then rotates the inner top rotating plate 810 to move the limit blocks 802 inward and align the tapered head 815 with each mounting hole. Then, by rotating 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 circumference of the mounting hole through the tapered head 815, and finally complete the positioning of the mounting plate 97.

[0070] Step 7, the operator inserts the welding block 96 into the rectangular hole 98 and performs spot welding between the welding block 96 and the mounting plate 97.

[0071] Step 8, the operator moves the support arm 94 to ensure that the welding disc at the end of the V-shaped plate 95 passes through the support arm 94, and the other end of the support arm 94 is inserted into the sleeve 93. After adjustment, weld the welding disc inside the support arm 94, spot weld the support arm 94 and the sleeve 93 together. When spot welding, it is also necessary to ensure that there is enough welding gap between the sleeve 93 and the rod body 92, and after the above spot welding operation, spot weld the sleeve 93 to the rod body 92.

[0072] Step 9, the operator rotates components such as the rod body 92 to perform full welding on the support arm 94, the sleeve 93, the rod body 92, the welding block 96 and the rectangular hole 98. During the welding process, rotate the rod body 92 as needed.

[0073] The above are only the preferred embodiments of the present invention and are not used 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 equivalent technologies, the present invention also intends to include these changes and modifications.

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). 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); 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 installation middle rod (402), and the movable inner rods (438) are inserted into the guide bar holes (431); 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 plates (426) is provided with limit outer plates (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); A pair of racks (437) are respectively installed at both ends of the inner pull seat (424), a gear (436) is meshed on the rack (437), a rotating shaft (433) is coaxially arranged on the gear (436), an inner pressure wheel (434) is eccentrically arranged 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 a ring convex edge (435) is arranged at the inner end of the inner pressure wheel (434); 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).

2. The three-way column assembly welding and positioning device according to claim 1 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).

3. The three-way column assembly welding positioning device according to claim 2 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).

4. The three-way column assembly welding and positioning device according to claim 1, 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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