Positioning support for assisting splicing of net rack welding balls

Abstract

The utility model relates to a positioning support for assisting net rack welding ball splicing, which comprises a fixed supporting frame, a stand column, a lifting device and a rod piece auxiliary supporting assembly, the fixed supporting frame is used for supporting the stand column, and the lifting device comprises a force transmission stand rod, a hand rocker, a force transmission belt, a lifting connecting piece, a supporting connecting rod, a welding ball hanging basket and a steel wire rope. One end of the lifting connecting piece is connected with the stand column, the other end of the lifting connecting piece is in threaded connection with the force transmission vertical rod, a hand rocker is arranged on the lifting connecting piece and connected with the force transmission vertical rod through a force transmission belt, and the height of the force transmission vertical rod to the ground can be adjusted by rotating the hand rocker. The top end of the bracket connecting rod is fixedly connected with the bottom end of the force transmission vertical rod, one end of the steel wire rope is fixedly connected with the welding ball hanging basket, and the other end is fixed on the bracket connecting rod; the rod piece auxiliary supporting assembly comprises a rotating shaft, a vertical positioning sliding way and a sliding block assembly, the top end of the vertical positioning sliding way is connected with the rotating shaft, the rotating shaft is connected with the supporting connecting rod, and the sliding block assembly is installed on the vertical positioning sliding way.

Description

Technical Field

[0001] The utility model relates to an auxiliary tool in the field of prefabricated buildings, and particularly to a positioning bracket for assisting in the assembly of welded spherical joints of a grid structure. Background Art

[0002] Due to factors such as short construction period and beautiful shape, steel structure buildings are increasingly favored by the construction market. The grid welded spherical joint structure is a space structure formed by connecting multiple rods in a certain grid form through welded spherical joints, which has the advantages of small space stress, light weight, large stiffness, and good seismic performance. During the construction process of the grid welded spherical joint structure, the welded spherical joints are usually supported and positioned separately, and then the welding of each rod is carried out in sequence. This process usually requires a large number of large-scale lifting equipment and a large amount of labor to complete the assembly and welding work of the welded spherical joint grid steel structure. Content of the Utility Model

[0003] The utility model discloses a positioning bracket for assisting in the assembly of welded spherical joints of a grid structure, which can reduce the use of on-site lifting equipment, reduce the number of construction workers on site, and improve the economic benefits of construction.

[0004] In order to achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] A positioning bracket for assisting in the assembly of welded spherical joints of a grid structure includes a fixed support frame, a column, a lifting device, and a rod auxiliary support component. One end of the fixed support frame is fixedly connected to the column, and the other end of the fixed support frame is anchored to the ground; the lifting device includes a force transmission vertical rod, a hand crank, a force transmission belt, a lifting connection member, a support connecting rod, a welded spherical joint hanging basket, and a steel wire rope. One end of the lifting connection member is fixedly connected to the top of the column. The outer wall of the force transmission vertical rod is provided with threads, and the other end of the lifting connection member is sleeved on the force transmission vertical rod through an internal thread sleeve. A hand crank is provided on the lifting connection member, and the hand crank is connected to the force transmission vertical rod through the force transmission belt. Rotating the hand crank in the same direction can adjust the height of the force transmission vertical rod relative to the ground. The top end of the support connecting rod is fixedly connected to the bottom end of the force transmission vertical rod, and the bottom end of the support connecting rod is used to fix the steel wire rope. The other end of the steel wire rope is fixedly connected to the welded spherical joint hanging basket; the rod auxiliary support component includes a rotating shaft, a vertical positioning slideway, and a slider component. The top end of the vertical positioning slideway is fixedly connected to the rotating shaft. The rotating shaft is sleeved on the support connecting rod and its position can be relatively fixed. The slider component is installed on the vertical positioning slideway, and the position of the slider component on the vertical positioning slideway can be fixed. The slider component can be used to support the steel pipe to be connected to the welded spherical joint.

[0006] Further, the lifting connecting piece includes a square block and a hollow sleeve. The sleeve is integrally connected to one end of the square block. Threads are provided on the inner wall of the sleeve. A cylinder is provided at the bottom of the other end of the square block. The cylinder is fixedly connected to the upright column. An opening is provided at the top of the square block, and anti-rotation teeth are provided on the inner wall of the opening. The hand rocker includes a vertical cylinder and horizontal handrails on both sides of the cylinder. A thin cylinder with a diameter smaller than that of the vertical cylinder is provided at the bottom of the vertical cylinder. Teeth are provided on the outer wall of the thin cylinder. The thin cylinder is inserted into the opening of the square block of the lifting connecting piece.

[0007] Further, the supporting connecting rod includes a cylindrical rod. The top of the cylindrical rod is fixedly connected to the force-transmitting upright rod. A perforated disc is provided at the bottom of the cylindrical rod. A circular tray is provided on the cylindrical rod above the perforated disc. The steel wire rope is fixed by passing through the hole in the perforated disc. The rotating shaft includes a hollow sleeve. The rotating shaft is sleeved on the cylindrical rod above the tray.

[0008] Further, the rotating shaft includes a hollow sleeve and a connecting plate. The connecting plate is fixedly connected to the outer side wall of the hollow sleeve. Fixing holes are provided on the connecting plate. The vertical positioning slideway is a semi-circular arc section structure and is vertically arranged perpendicular to the ground. The top end of the vertical positioning slideway is fixedly connected to the connecting plate. The slider assembly includes a slider and a bracket. The bracket is a semi-circular arc structure with an upward opening. The bracket is fixedly connected to the slider. A square hole is provided on the slider. The vertical positioning slideway passes through the square hole of the slider, enabling the slider to slide along the vertical positioning slideway. A threaded hole is provided on the side of the slider, and a pin can be inserted into the threaded hole to fix the relative position of the slider and the vertical positioning slideway.

[0009] Further, an anti-disengagement block is provided at the end of the vertical positioning slideway.

[0010] Further, the upright column is formed by splicing multiple detachable upright rods up and down. A single detachable upright rod includes a hollow cylindrical rod. A clamping piece insertion hole is provided at the upper part of the cylindrical rod. A convex block is provided on the cylindrical rod below the clamping piece insertion hole. A disc is provided at the bottom of the cylindrical rod. A thin rod with a diameter smaller than that of the cylindrical rod is provided at the bottom of the disc. A clamping piece insertion hole is provided on the thin rod. The adjacent detachable upright rods above and below are inserted into each other and fixed with clamping pieces. The clamping piece includes a square block. Two cylinders are arranged at intervals on one side of the square block. The cylinders on the clamping piece are used to be inserted into the clamping piece insertion holes.

[0011] Further, a bottom support is provided at the bottom of the lowermost detachable upright rod. The bottom support includes a chassis and a hollow sleeve. The hollow sleeve is located at the top of the chassis. The bottom of the hollow sleeve is integrally connected to the chassis. A clamping piece insertion hole is provided on the hollow sleeve. The thin rod of the lowermost detachable upright rod is inserted into the hollow sleeve of the bottom support and fixed with a clamping piece.

[0012] Further, the fixed support frame includes detachable connecting rods, pedals, ground anchor fixing parts and ground anchors. Multiple detachable connecting rods are assembled up and down to form two support bodies, and the two support bodies are arranged in a V-shaped layout. Multiple pedals are installed at intervals between the two support bodies. A connecting sleeve is sleeved on the column. The connecting sleeve includes a sleeve and two ear plates located on the outer wall of the sleeve. The ear plates are provided with holes. The tops of the two support bodies are fixed to the ear plates by bolts. The bottoms of the two support bodies are connected to the ground anchor fixing parts, and the ground anchor is used to pass through the ground anchor fixing parts to fix the support bodies on the ground.

[0013] Further, the main body of the detachable connecting rod is a square rod. The bottom of the square rod is provided with a threaded rod. A vertical threaded hole is opened along the vertical direction on the top surface of the square rod, and a horizontal threaded hole is also opened at the upper end of the square rod. Between the detachable connecting rods that are spliced together, the threaded rod on one detachable connecting rod is inserted into the vertical threaded hole on another detachable connecting rod, and a bolt is passed through the horizontal threaded hole for fixed connection. The ground anchor fixing part includes a cylindrical barrel and an intersecting barrel that is connected to the cylindrical barrel in an intersecting manner. One end of the cylindrical barrel is provided with a threaded hole for the threaded rod of the detachable connecting rod to be inserted. A ground anchor insertion hole is opened on the intersecting barrel. The ground anchor is a cylindrical rod member. The cylindrical rod member passes through the ground anchor insertion hole, and the bottom of the cylindrical rod member is a cone.

[0014] Further, hooks are provided at both ends of the pedal, and the pedal is hung on the detachable connecting rod through the hooks.

[0015] The positioning bracket designed by the utility model is assembled by splicing components, which is convenient for disassembly and assembly and can be reused. The assembly structure of the entire positioning bracket is simple and easy to operate. It is used to assist in the welding positioning of welded balls and steel pipe members, can reduce the use of on-site lifting equipment, helps reduce the number of laborers and equipment input costs at the construction site, and improves the economic benefits of the building. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the assembly structure of the positioning bracket given in the embodiment;

[0017] Figure 2 It is a schematic diagram of the connection between the fixed support frame and the column in the positioning bracket;

[0018] Figure 3 It is a schematic diagram of the structure of the detachable connecting rod in the fixed support frame;

[0019] Figure 4 It is a schematic diagram of the pedal structure in the fixed support frame;

[0020] Figure 5 It is a schematic diagram of the structure of the ground anchor fixing part in the fixed support frame;

[0021] Figure 6Schematic diagram of the assembly of the ground anchor and the ground anchor fixing member in the fixed support frame;

[0022] Figure 7 Schematic diagram of the bottom support structure in the column;

[0023] Figure 8 Schematic diagram of the structure of the detachable vertical rod in the column;

[0024] Figure 9 Partial structure schematic diagram of the connection between the fixed support frame and the column;

[0025] Figure 10 Schematic diagram of the clamping member structure in the column;

[0026] Figure 11 Schematic diagram of the connection between the bottom support and the detachable vertical rod in the column;

[0027] Figure 12 Assembly schematic diagram of the lifting device and the rod auxiliary support assembly;

[0028] Figure 13 Schematic diagram of the structure of the hand rocker in the lifting device;

[0029] Figure 14 Schematic diagram of the structure of the support connecting rod in the lifting device;

[0030] Figure 15 Schematic diagram of the structure of the lifting connecting piece in the lifting device;

[0031] Figure 16 Assembly schematic diagram of the slider assembly and the vertical positioning slideway in the rod auxiliary support assembly;

[0032] Figure 17 State diagram of the positioning bracket during the welding positioning of the welded spherical joint and the steel pipe.

[0033] Reference signs:

[0034] 1. Fixed support frame; 11. Detachable connecting rod; 111. Threaded rod; 112. Vertical threaded hole; 113. Horizontal threaded hole; 12. Pedal; 121. Hook; 13. Ground anchor fixing member; 131. Cylindrical barrel; 132. Intersecting barrel; 133. Ground anchor insertion hole; 134. Threaded hole; 14. Ground anchor; 141. Nut;

[0035] 2. Column; 21. Bottom support; 211. Chassis; 212. Hollow sleeve; 213. Clamping member insertion hole; 22. Detachable vertical rod; 221. Cylindrical rod; 222. Disc; 223. Convex block; 224. Clamping member insertion hole; 23. Connecting sleeve; 231. Sleeve; 232. Ear plate; 24. Clamping member; 241. Square block; 242. Cylinder;

[0036] 3. Lifting device; 31. Force transmission belt; 32. Hand rocker; 321. Cylinder; 322. Handrail; 323. Clamping teeth; 33. Force transmission vertical rod; 34. Support connecting rod; 341. Cylindrical rod; 342. Tray; 343. Perforated disc; 35. Welded ball hanging basket; 36. Steel wire rope; 37. Lifting connecting piece; 371. Square block; 372. Sleeve; 373. Cylinder

[0037] 4. Rod auxiliary support assembly; 41. Rotating shaft; 411. Sleeve; 412. Connecting plate; 42. Vertical positioning slideway; 43. Slide block assembly; 431. Slide block; 432. Bracket; 433. Pin; 44. Anti - detachment block

[0038] 5. Welded ball

[0039] 6. Steel pipe Specific implementation mode

[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0041] This embodiment discloses a positioning bracket for assisting in the assembly of welded balls of a space frame, as shown in Figure 1 and Figure 17 It mainly includes a fixed support frame 1, a column 2, a lifting device 3 and a rod auxiliary support assembly 4. The fixed support frame 1 is used to support the column 2. The upper part of the column 2 is connected to the lifting device 3. The lifting device 3 is used to suspend the welded ball 5 and can adjust the height of the welded ball 5 relative to the ground up and down. The rod auxiliary support assembly 4 is connected to the lifting device 3. The rod auxiliary support assembly 4 is used to assist in positioning the steel pipe 6 welded to the welded ball 5, facilitating the welding operation of the steel pipe 6 and the welded ball 5. The specific structures of the above - mentioned components will be described one by one in conjunction with each drawing below.

[0042] The structure of the fixed support frame 1 is as shown in Figure 2 It is mainly composed of a detachable connecting rod 11, a pedal 12, a ground anchor fixing piece 13 and a ground anchor 14. Among them, the structure of the detachable connecting rod 11 is as shown in Figure 3As shown in the figure, the main body of the detachable connecting rod 11 is a flat and long square rod. A threaded rod 111 is provided at the bottom of the square rod, a vertical threaded hole 112 is opened vertically on the top surface of the square rod, and a horizontal threaded hole 113 is opened horizontally at the upper end of the square rod. Multiple detachable connecting rods 11 can be spliced with each other to form a support body. When the detachable connecting rods 11 that are spliced with each other are spliced, the threaded rod 111 on the upper detachable connecting rod 11 is inserted into the vertical threaded hole 112 on the lower detachable connecting rod 11, and a bolt is inserted into the horizontal threaded hole 113 of the lower detachable connecting rod 11 to fix the positions of the two assembled detachable connecting rods 11. Assemble two support bodies in this way, make the two support bodies inclined to the ground and arranged in a V-shape, and the upright column 2 can be stably supported. A plurality of pedals 12 are installed at intervals between the two support bodies to facilitate the operator to climb for operation. The structure of the pedal 12 is as Figure 4 shown. The main body of the pedal 12 is a trapezoidal plate, and hooks 121 are provided at both ends of the trapezoidal plate. The pedal 12 can be fixed on the support body composed of the detachable connecting rods 11 through the hooks 121.

[0043] Continuing with the structural description of the fixed support frame 1 as above, as Figure 5 and Figure 6 shown, the ground anchor fixing member 13 includes a cylindrical barrel 131 and an intersecting barrel 132 that is intersectingly connected to the cylindrical barrel 131. A vertical threaded hole 134 is opened on the upper end surface of the cylindrical barrel 131, and a through ground anchor insertion hole 133 is opened on the top surface of the intersecting barrel 132. The ground anchor 14 is a cylindrical rod, and the bottom of the cylindrical rod is a cone. A ground anchor fixing member 13 is connected to the bottom of each support body, and the threaded rod 111 of the lowermost detachable connecting rod 11 in the support body is inserted into the threaded hole 134 of the ground anchor fixing member 13. The cylindrical rod of the ground anchor 14 passes through the ground anchor insertion hole 133, and a nut 141 is sleeved on the cylindrical rod to lock the ground anchor 14 and the ground anchor fixing member 13, and the cone at the bottom of the ground anchor 14 is inserted into the ground for fixation.

[0044] As Figure 2 shown, the upright column 2 includes a detachable vertical rod 22, a bottom bracket 21, a connecting sleeve 23, and a clamping member 24. Among them, the structure of the detachable vertical rod 22 is as Figure 8 shown, including a hollow cylindrical rod 221, a disc 222, and a convex block 223. The disc 222 is fixed to the bottom of the cylindrical rod 221. A thin rod is provided at the bottom of the disc 222, and the diameter of the thin rod is smaller than that of the cylindrical rod 221. A clamping member insertion hole is opened on the thin rod. A clamping member insertion hole 224 is also opened at the upper part of the cylindrical rod 221, and the convex block 223 is located below the clamping member insertion hole 224 on the cylindrical rod 221. The structure of the clamping member 24 is as Figure 10As shown, it includes a square block 241 and a cylinder 242. Two cylinders 242 are arranged at intervals on one side of the square block 241. The upright column 2 is formed by inserting multiple detachable vertical rods 22 up and down in a butt-jointed manner. As Figure 2 shown, when two detachable vertical rods 22 that are plugged into each other are connected, the thin rod of the upper detachable vertical rod 22 is inserted into the cylindrical rod 221 of the lower detachable vertical rod 22, so that the clamping part insertion holes on the thin rod correspond to the clamping part insertion holes 224 on the cylindrical rod 221. One cylinder 242 of the clamping part 24 is inserted into the clamping part insertion hole 224, and the other cylinder 242 on the clamping part 24 can be clamped by the convex block 223, thereby enhancing the fixing effect of the clamp.

[0045] Continuing with the structural description of the upright column 2 as above, the structure of the base support 21 is as Figure 7 shown. The base support 21 includes a circular chassis 211 and a hollow sleeve 212. The hollow sleeve 212 is located at the center of the top of the chassis 211. The bottom of the hollow sleeve 212 is integrally connected with the chassis 211. The top of the hollow sleeve 212 is open, and a clamping part insertion hole 213 is provided on the side wall of the hollow sleeve 212. The bottom of the lowermost detachable vertical rod 22 in the upright column 2 is provided with a base support 21. As Figure 11 shown, the thin rod of the lowermost detachable vertical rod 11 is inserted into the hollow sleeve 212 of the base support 21. The clamping part insertion holes on the thin rod correspond to the clamping part insertion holes 213 on the hollow sleeve 212, and then the cylinder 242 of the clamping part 24 is inserted into the clamping part insertion hole 213 for fixation.

[0046] The connection method between the fixed support frame 1 and the upright column 2 given above is described as follows: As Figure 9 shown, the fixed support frame 1 and the upright column 2 are fixedly connected through a connecting sleeve 23. The connecting sleeve 23 includes a hollow sleeve 231. Two ear plates 232 are arranged on the outer wall of the sleeve 231 in a shape of an inverted V, and holes are opened on the ear plates 232. According to the length of the support main body assembled in the fixed support frame 1, a detachable vertical rod 22 at an appropriate height of the upright column 2 is selected. The sleeve 231 of the connecting sleeve 23 is sleeved on the cylindrical rod 221 of the detachable vertical rod 22, and the disc 222 on the detachable vertical rod 22 limits and supports the sleeve 231 to prevent it from falling. When the fixed support frame 1 is connected to the upright column 2, the top of the detachable vertical rod 22 at the top of each support main body is fixed to the corresponding ear plate 232 with bolts.

[0047] The structure of the lifting device 3 is as Figure 12 shown, and it is mainly composed of a force transmission vertical rod 33, a hand rocker 32, a force transmission belt 31, a lifting connection part 37, a support connecting rod 34, a welded ball hanging basket 35 and a steel wire rope 36. Among them, the force transmission vertical rod 33 is a vertically placed cylindrical rod, and the outer wall of the force transmission vertical rod 33 is a full-thread structure. The structure of the hand rocker 32 is asFigure 13 As shown in the figure, the hand rocker 32 includes a vertical cylinder 321 and horizontal armrests 322 on both sides of the cylinder 321. At the bottom of the cylinder 321, there is a thin cylinder with a diameter smaller than that of the cylinder 321, and anti-rotation locking teeth 323 are provided on the outer wall of the thin cylinder.

[0048] The structure of the lifting connecting member 37 is as Figure 15 As shown in the figure, the lifting connecting member 37 mainly includes a long strip-shaped square block 371. At one end of the square block 371, there is a hollow sleeve 372, and the sleeve 372 is integrally connected with the square block 371. Threads are provided on the inner wall of the sleeve 372. At the bottom of the other end of the square block 371, there is a hollow cylinder 373. A hole is opened in the lower part of the hollow cylinder 373, and the bottom of the cylinder 373 is open. The cylinder 373 is inserted into the top of the detachable vertical rod 22 at the uppermost end of the vertical column 2, and then the lifting connecting member 37 can be fixed to the top of the vertical column 2 by using the clamping member 24 to pass through the hole. A hole is opened on the top surface of the square block 371 above the cylinder 373, and anti-rotation locking teeth are provided on the inner wall of the hole. The thin cylinder on the hand rocker 32 is inserted into the hole on the square block 371, and the locking teeth 323 on the thin cylinder are engaged with the locking teeth in the hole on the square block 371. The provided locking teeth only allow the hand rocker 32 to rotate in one direction (such as clockwise), and it cannot rotate in the reverse direction. The sleeve 372 of the lifting connecting member 37 is sleeved on the force-transmitting vertical rod 33. A force-transmitting belt 31 is provided between the cylinder 321 of the hand rocker 32 and the force-transmitting vertical rod 33. One end of the force-transmitting belt 31 is wrapped around the cylinder 321, and the other end is wrapped around the force-transmitting vertical rod 33. By rotating the hand rocker 32 in a fixed direction, the height of the force-transmitting vertical rod 33 relative to the ground can be adjusted.

[0049] Continuing from the above, a support connecting rod 34 is provided at the bottom of the force-transmitting vertical rod 33, and the structure of the support connecting rod 34 is as Figure 14 As shown in the figure, the support connecting rod 34 includes a cylindrical rod 341. The top of the cylindrical rod 341 is fixedly welded to the bottom of the force-transmitting vertical rod 33. A perforated disc 343 is provided at the bottom of the cylindrical rod 341, and a circular tray 342 is provided on the cylindrical rod 341 above the perforated disc 343. As Figure 12 As shown in the figure, the welded ball hanging basket 35 is in a ring shape. The welded ball hanging basket 35 is used to support the welded ball 5. The welded ball hanging basket 35 is fixed and hoisted by multiple steel wires 36 along the circumferential direction. The other ends of the steel wires 36 can be tied and fixed at the holes of the perforated disc 343.

[0050] The rod auxiliary support assembly 4 is mainly used to assist in supporting the steel pipe 6 welded to the welded ball 5. The structure of the rod auxiliary support assembly 4 is as Figure 12As shown in the figure, it mainly includes a rotating shaft 41, a vertical positioning slideway 42, a slider assembly 43, and an anti - detachment block 44. Among them, the vertical positioning slideway 42 is a flat semi - circular arc - shaped structure, which is vertically arranged relative to the ground. An anti - detachment block 44 is provided at the end (i.e., the bottom end) of the vertical positioning slideway 42 to prevent the slider assembly 43 from falling off the vertical positioning slideway 42. The rotating shaft 41 includes a hollow sleeve 411 and a connecting plate 412. Fixing holes are opened on the connecting plate 412, and the connecting plate 412 is fixedly connected to the outer side wall of the hollow sleeve 411. The top end of the vertical positioning slideway 42 is fixedly connected to the connecting plate 412 with bolts. The hollow sleeve 411 of the rotating shaft 41 is sleeved on the cylindrical rod 341 of the support connecting rod 34, and the bottom of the hollow sleeve 411 is supported and limited by the tray 342.

[0051] The slider assembly 43 is installed on the vertical positioning slideway 42. The slider assembly 43 can slide along the vertical positioning slideway 42 and can also be fixed in position. The structure of the slider assembly 43 is as Figure 16 shown, mainly including a square slider 431 and a bracket 432. The bracket 432 is a semi - circular arc - shaped structure with an upward opening, and the bracket 432 is used to support the steel pipe 6. Taking Figure 16 the direction shown as a reference, the bracket 432 is integrally connected to the right side of the slider 431. Threaded holes are opened on the left side surface of the slider 431, and a square hole penetrating up and down is opened on the top surface of the slider 431. The vertical positioning slideway 42 passes through the square hole of the slider 431, so that the slider 431 can slide along the vertical positioning slideway 42 to facilitate adjusting the position of the slider assembly 43 according to the height of the steel pipe 6. After the position is adjusted, a pin 433 can be inserted into the threaded hole on the left side of the slider 431 to fix the position of the slider 431.

[0052] For the positioning bracket assembled according to the above - given structure, when assisting in positioning and welding the welded ball 5 and the steel pipe 6, as Figure 17 shown, first determine the number of components to be assembled according to the positioning elevation of the welded ball, and complete the construction of the positioning bracket according to the above - given structure. First, separate the steel wire rope 36 from the perforated disc 343, push the welded ball 5 into the welded - ball hanging basket 35, then fix the steel wire rope 36 to the driving disc 343, and then rotate the hand - operated rocker 32 to lift the welded ball 5 to the specified elevation position. The position of the slider assembly 43 can be determined according to the installation position of the steel pipe 6 to be welded. After adjusting the welding position of the corresponding steel pipe 6 by rotating the rotating shaft 41 and sliding the slider 431, place the welding end of the steel pipe 6 on the bracket 432 of the slider assembly 43, and the welder spot - welds the steel pipe 6 and the welded ball 5, and then performs full - welding. For the convenience of welding operations, the fixed support frame 1 and the column 2 in this embodiment can also be used to additionally construct a structure as Figure 2A welding operation platform as shown is placed at the welding position of the steel pipe 6, and after climbing up using the pedal, welding operations are carried out.

[0053] Although embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning bracket for assisting in the assembly of welded spherical joints of a grid structure, characterized in that: It includes a fixed support frame, a column, a lifting device and a rod auxiliary support assembly. One end of the fixed support frame is fixedly connected to the column, and the other end of the fixed support frame is anchored to the ground; the lifting device includes a force transmission vertical rod, a hand crank, a force transmission belt, a lifting connection piece, a support connecting rod, a welded ball hanging basket and a steel wire rope. One end of the lifting connection piece is fixedly connected to the top of the column. The outer wall of the force transmission vertical rod is provided with threads. The other end of the lifting connection piece is sleeved on the force transmission vertical rod through an internal thread sleeve. A hand crank is provided on the lifting connection piece, and the hand crank is connected to the force transmission vertical rod through the force transmission belt. Rotating the hand crank in the same direction can adjust the height of the force transmission vertical rod relative to the ground. The top end of the support connecting rod is fixedly connected to the bottom end of the force transmission vertical rod, and the bottom end of the support connecting rod is used to fix the steel wire rope. The other end of the steel wire rope is fixedly connected to the welded ball hanging basket; the rod auxiliary support assembly includes a rotating shaft, a vertical positioning slideway and a slider assembly. The top end of the vertical positioning slideway is fixedly connected to the rotating shaft. The rotating shaft is sleeved on the support connecting rod and its position can be relatively fixed. The slider assembly is installed on the vertical positioning slideway, and the position of the slider assembly on the vertical positioning slideway can be fixed. The slider assembly can be used to support the steel pipe to be connected to the welded ball.

2. The positioning bracket for assisting the assembly of welded joints of grid frames according to claim 1, wherein: The lifting connection piece includes a square block and a hollow sleeve. The sleeve is integrally connected to one end of the square block. The inner wall of the sleeve is provided with threads. A cylinder is provided at the bottom of the other end of the square block, and the cylinder is fixedly connected to the column. An opening is provided at the top end of the square block, and anti-rotation teeth are provided on the inner wall of the opening; the hand crank includes a vertical cylinder and horizontal handrails on both sides of the cylinder. A thin cylinder with a diameter smaller than that of the vertical cylinder is provided at the bottom of the vertical cylinder. The outer wall of the thin cylinder is provided with teeth, and the thin cylinder is inserted into the opening of the square block of the lifting connection piece.

3. The positioning bracket for assisting in the assembly of welded joints of a grid frame according to claim 1, wherein: The support connecting rod includes a cylindrical rod. The top of the cylindrical rod is fixedly connected to the force transmission vertical rod. A perforated disc is provided at the bottom of the cylindrical rod. A circular tray is provided on the cylindrical rod above the perforated disc. The steel wire rope is fixed by passing through the hole in the perforated disc. The rotating shaft includes a hollow sleeve, and the rotating shaft is sleeved on the cylindrical rod above the tray.

4. The positioning bracket for assisting in the assembly of welded spherical joints of grid structures according to claim 1, characterized in that: The rotating shaft includes a hollow sleeve and a connecting plate. The connecting plate is fixedly connected to the outer side wall of the hollow sleeve. A fixing hole is provided on the connecting plate. The vertical positioning slideway is a semi-circular arc section structure, and the vertical positioning slideway is vertically arranged relative to the ground. The top end of the vertical positioning slideway is fixedly connected to the connecting plate. The slider assembly includes a slider and a bracket. The bracket is a semi-circular arc structure with an upward opening, and the bracket is fixedly connected to the slider. A square hole is provided on the slider, and the vertical positioning slideway passes through the square hole of the slider, so that the slider can slide along the vertical positioning slideway. A threaded hole is provided on the side of the slider, and a pin is inserted into the threaded hole to fix the relative position of the slider and the vertical positioning slideway.

5. The positioning bracket for assisting in the assembly of welded spherical joints of a grid frame according to claim 1, wherein: An anti-detachment block is provided at the end of the vertical positioning slideway.

6. The positioning bracket for assisting in the assembly of welded spherical joints of a grid frame according to claim 1, characterized in that: The upright column is formed by splicing multiple detachable vertical rods up and down. Each detachable vertical rod includes a hollow cylindrical rod. An insertion hole for a clamping member is provided at the upper part of the cylindrical rod. A convex block is provided below the insertion hole for the clamping member on the cylindrical rod. A disc is provided at the bottom of the cylindrical rod, and a thin rod with a diameter smaller than that of the cylindrical rod is provided at the bottom of the disc. An insertion hole for a clamping member is provided on the thin rod. The adjacent detachable vertical rods above and below are inserted into each other and fixed with a clamping member. The clamping member includes a square block, and two cylinders are arranged at intervals on one side of the square block. The cylinders on the clamping member are used to be inserted into the insertion holes for the clamping members.

7. The positioning bracket for assisting in the assembly of welded joints of grid structures according to claim 6, wherein: A bottom support is provided at the bottom of the lowermost detachable vertical rod. The bottom support includes a chassis and a hollow sleeve. The hollow sleeve is located at the top of the chassis. The bottom of the hollow sleeve is integrally connected with the chassis. An insertion hole for a clamping member is provided on the hollow sleeve. The thin rod of the lowermost detachable vertical rod is inserted into the hollow sleeve of the bottom support and fixed with a clamping member.

8. The positioning bracket for assisting in the assembly of welded spherical joints of a grid frame according to claim 1, wherein: The fixed support frame includes detachable connecting rods, pedals, a ground anchor fixing member and a ground anchor. Multiple detachable connecting rods are assembled up and down to form two support bodies. The two support bodies are arranged in a shape of an eight. Multiple pedals are installed at intervals between the two support bodies. A connecting sleeve is sleeved on the upright column. The connecting sleeve includes a sleeve and two ear plates located on the outer wall of the sleeve. Holes are provided on the ear plates. The tops of the two support bodies are fixed on the ear plates by bolts. The bottoms of the two support bodies are connected to the ground anchor fixing member. The ground anchor is used to pass through the ground anchor fixing member to fix the support bodies on the ground.

9. The positioning bracket for assisting in the assembly of welded spherical joints of a grid frame according to claim 8, characterized in that: The main body of the detachable connecting rod is a square rod. A threaded rod is provided at the bottom of the square rod. A vertical threaded hole is provided along the vertical direction on the top surface of the square rod. A horizontal threaded hole is also provided at the upper end of the square rod. Between the mutually spliced detachable connecting rods, the threaded rod on one detachable connecting rod is inserted into the vertical threaded hole on another detachable connecting rod, and is fixedly connected by passing a bolt through the horizontal threaded hole. The ground anchor fixing member includes a cylindrical barrel and an intersecting barrel intersecting with the cylindrical barrel. A threaded hole is provided at one end of the cylindrical barrel for the threaded rod of the detachable connecting rod to be inserted. A ground anchor insertion hole is provided on the intersecting barrel. The ground anchor is a cylindrical rod member. The cylindrical rod member passes through the ground anchor insertion hole, and the bottom of the cylindrical rod member is a cone.

10. A positioning bracket for assisting in the assembly of welded balls of a grid frame, characterized in that: Hooks are provided at both ends of the pedal. The pedal is hung on the detachable connecting rod through the hooks.

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