Construction method of dry coal shed grid structure

Abstract

The application discloses a kind of dry coal shed net rack structure construction methods, comprising the following steps: S1, support base construction;S2, fixed bolt ball support one and bolt ball support two;S3, the bolt ball of net rack foundation unit is limited in embedding space;S4, form net rack unit one;S5, form net rack unit two;S6, form net rack unit three;S7, form whole net rack;S8, remove bar piece clamping structure, support structure and positioning structure;S9, form net rack structure.The bolt ball is rotated in the support base of one side in the application, is installed in multiple net rack unit combination, one side is lifted and rotated, finally, the installation of whole net rack is completed in the other side and is supplemented with rod and is folded, is suitable for the installation of large-span net rack structure, can reduce crane operation point, reduce work face, reduce installation difficulty, eliminate the security risk existing when hoisting net rack structure.

Description

Technical Field

[0001] This invention belongs to the field of steel structure construction technology, and specifically relates to a construction method for a dry coal shed grid structure. Background Technology

[0002] Dry coal sheds are one of the main buildings in thermal power plants. Currently, coal yards and bulk material yards both domestically and internationally mainly use grid structures to build dry coal sheds for enclosed protection of stockpiled coal. A dry coal shed consists of grid supports, a grid structure, and an arc-shaped shell. The grid supports are installed on the base surface, and both sides of the grid structure are fixed to the grid supports. The arc-shaped shell is installed on top of the grid structure, thus forming a coal storage space.

[0003] As power plants increase their demand for coal storage, the span and length of dry coal sheds are also increasing. However, with the overall increase in the size of the dry coal sheds, the requirements for the strength of the space frame support structure during construction are also becoming increasingly stringent. Simultaneously, the temperature stress caused by thermal expansion and contraction at the space frame support will increase significantly. When this temperature stress is excessive, it can even lead to damage to the space frame support and local members, potentially causing a major safety accident. To address this technical problem, existing technology discloses an invention patent entitled "A Space Frame Support and Its Construction Method" (Authorization Announcement No.: CN114482293B). This space frame support has high structural strength and can release temperature stress through sliding, reducing damage to the entire space frame support, simplifying the construction process, and minimizing construction errors.

[0004] Existing technology involves welding the space frame structure to bolt balls. When the space frame structure has a large span and heavy weight, multiple cranes are required to lift the space frame structure, which increases the number of crane working points and the working surface. Moreover, there are safety hazards when lifting the space frame structure, and the installation is difficult. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned technical problems existing in the prior art and to provide a construction method for a dry coal shed grid structure. The method involves rotating the bolt ball in the support base on one side, assembling and installing multiple grid units, lifting and rotating on one side, and finally closing the rod on the other side to complete the installation of the entire grid. This method is suitable for the installation of large-span grid structures, reduces the number of crane operation points, reduces the working surface, lowers the installation difficulty, and eliminates the safety hazards that exist when hoisting grid structures.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A construction method for a dry coal shed grid structure, characterized by comprising the following steps:

[0008] S1. Construction of the support base: forming support bases on both sides. The area between the two rows of support bases is used to install the space frame structure. The support base forms a vertical mounting surface one and a horizontal mounting surface two.

[0009] S2. Fix bolt ball bearing one at one mounting surface and bolt ball bearing two at another mounting surface, with bolt ball bearing one and bolt ball bearing two forming an embedded space.

[0010] S3. Weld and fix the rods and bolt balls on the ground to form a space frame foundation unit. Embed the bolt balls at the end of the space frame foundation unit near the support base into the embedding space of the left support base. Then fix the limiting piece on the bolt ball support two. The limiting piece wraps around the bolt balls of the space frame foundation unit, so that the bolt balls of the space frame foundation unit are limited in the embedding space and can rotate in the embedding space.

[0011] S4. Use a crane to lift the end of the space frame foundation unit away from the support base. At this time, the bolt ball of the space frame foundation unit rotates at a set angle in the embedded space. Then weld the rod and bolt ball to the end of the space frame foundation unit away from the support base to form space frame unit one. Then pull a steel wire rope on space frame unit one.

[0012] S5. Change the hoisting position of the first space frame unit. Use a crane to lift the end of the first space frame unit away from the support base. At this time, the bolt ball of the space frame foundation unit of the first space frame unit rotates at a set angle in the embedded space. Then weld the rod and bolt ball to the end of the first space frame unit away from the support base to form the second space frame unit. Then pull a steel wire rope on the second space frame unit.

[0013] S6. Change the hoisting position of the second space frame unit. Use a crane to lift the end of the second space frame unit away from the support base. At this time, the bolt ball of the space frame foundation unit of the second space frame unit rotates at a set angle in the embedded space. Then weld the rod and bolt ball to the end of the second space frame unit away from the support base to form the third space frame unit. Then pull a steel wire rope on the third space frame unit.

[0014] S7. Weld and fix the rods and bolt balls on the ground to assemble them into a space frame splicing unit. Then change the hoisting position of space frame unit three. Use a crane to lift the end of space frame unit three away from the support base. Then install the rod clamping structure at the support base. Use the rod clamping structure to clamp the lowest rod of the space frame foundation unit of space frame unit three. Then install the support structure at the support base. The support structure supports the rod clamping structure. Then use a crane to lift the bolt balls of the space frame splicing unit into the embedded space of the right support base. Then install the positioning structure between the space frame splicing unit and space frame unit three. Then weld the rods between the space frame splicing unit and space frame unit three to perform the rod addition operation to form a complete space frame.

[0015] S8. Unload the wire ropes on the entire space frame, then weld the bottom bolt ball of the space frame foundation unit to bolt ball support one, bolt ball support two and the limiting piece. At the same time, weld the bottom bolt ball of the space frame splicing unit to bolt ball support one and bolt ball support two. Then remove the member clamping structure, support structure and positioning structure, and then detach the crane from the entire space frame.

[0016] S9. Assemble the connecting rods on the ground, and then weld the connecting rods between two adjacent space frames to form a space frame structure. Then remove the bolt ball support one from the mounting surface one, and at the same time remove the bolt ball support two from the mounting surface two. Then move the space frame structure to the design position.

[0017] Furthermore, the bolted ball bearing 1 includes a base plate 1 and a stiffening plate 1. The base plate 1 is fixed to a mounting surface by fixing bolts. The stiffening plate 1 is welded to the base plate 1 in a cross shape. The bolted ball bearing 2 includes a base plate 2, a support column, and a stiffening plate 2. The base plate 2 is fixed to a mounting surface 2 by fixing bolts. The support column is welded between the base plate 2 and the stiffening plate 1. The stiffening plate 2 is welded between the support column and the base plate 2. The support column, the stiffening plate 2, and the stiffening plate 1 form an embedded space.

[0018] Furthermore, the rod clamping structure includes a fixing frame 1 and a clamping plate. Two clamping plates are used to clamp the rod. Each clamping plate is set on one of the two fixing frames 1. The fixing frame 1 has a through hole. The clamping plate has a threaded rod 1 that passes through the through hole. Each threaded rod 1 has two locking nuts. The two locking nuts on the threaded rod 1 are locked on the front and rear sides of the fixing frame 1. When the crane lifts the end of the space frame unit 3 away from the support base, the fixing frame 1 is set on the pre-embedded bolts of the support base. Then, fixing nuts are screwed into the pre-embedded bolts to fix the fixing frame 1 on the support base. Then, by changing the position of the two locking nuts on the threaded rod 1, the clamping plate is moved towards the rod and attached to the surface of the rod. Finally, the locking nuts are locked on the clamping plate.

[0019] Furthermore, the clamping plate has a threaded hole connected to a rotating rod. One end of the rotating rod is provided with a tightening end, and the other end of the rotating rod is provided with a limiting plate. After the clamping plate clamps the rod, the tightening end is tightened, causing the limiting plate to move toward the bolt ball support and limit the limiting plate on the bolt ball support.

[0020] Furthermore, the support structure includes a second fixed frame and a second threaded rod. The second fixed frame has a U-shaped groove, and the second threaded rod is threaded into the threaded hole of the second fixed frame, allowing the second threaded rod to be vertically adjusted on the second fixed frame. The second threaded rod is welded with a hexagonal nut, and a support plate is welded to the end of the second threaded rod. After the clamping plate clamps the rod, the U-shaped groove of the second fixed frame is slid into the pre-embedded bolt of the support base. At this time, the support plate is located below the clamping plate. Then, the fixing nut is screwed into the pre-embedded bolt to fix the second fixed frame on the support base. Then, the hexagonal nut is screwed in, causing the second threaded rod to rise and the support plate to support the clamping plate.

[0021] Furthermore, the first fixing bracket is used to fix the connecting rod with mounting bolts, and the second fixing bracket is provided with a slot through which the connecting rod passes.

[0022] Furthermore, the positioning structure includes two clamping structures and a connecting plate. The clamping structure includes two clamping plates with tie bolts between them. The tie bolts are bolted with clamping nuts. When the bolt ball of the space frame splicing unit is lowered into the embedded space of the right support base, one of the clamping structures is installed on the space frame unit three. The two clamping plates clamp the rods of the space frame unit three and tighten the clamping nuts. The other clamping structure is installed on the space frame splicing unit. The two clamping plates clamp the rods of the space frame splicing unit and tighten the clamping nuts. Then, a connecting plate is inserted between the two clamping structures. The connecting column on the outside of the clamping plate passes through the mounting hole of the connecting plate. Then, a limit nut is screwed into the connecting column and tightened.

[0023] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0024] (1) The bolt ball of the present invention is set in the embedded space formed by bolt ball support one and bolt ball support two, and the bolt ball of the space frame foundation unit is wrapped with a limiting member, so that the bolt ball of the space frame foundation unit is limited in the embedded space and can rotate in the embedded space. The space frame foundation unit can be rotated in the embedded space, and multiple space frame units can be combined and installed. The unit can be lifted and rotated on one side. Finally, the rods are welded between the space frame splicing unit and the space frame unit three to perform the rod closing operation and complete the installation of the whole space frame. It is suitable for the installation of large-span space frame structures, which can reduce the number of crane operation points, reduce the working surface, reduce the installation difficulty, and eliminate the safety hazards existing when hoisting the space frame structure.

[0025] (2) The present invention provides a steel wire rope at the node of each space frame unit to control the internal force and deformation of the space frame.

[0026] (3) In this invention, rods are welded between the space frame splicing unit and the third space frame unit. When performing rod replacement operations, the third space frame unit has a certain weight. If only a crane is used to lift the third space frame unit, it is susceptible to wind influence due to its span and weight, making it prone to swaying and hindering the rod replacement operation. To address this technical problem, this invention uses a rod clamping structure to clamp the lowest rod of the space frame foundation unit of the third space frame unit. The force on the third space frame unit is transmitted to the support base through the rod clamping structure. At this time, the third space frame unit is lifted by the crane and simultaneously limited by the rod clamping structure. The third space frame unit always maintains the set lifting state, is less affected by wind, has strong environmental adaptability, improves the safety of rod replacement, and improves the assembly accuracy of the space frame splicing unit and the third space frame unit, thereby improving the construction quality of the entire space frame.

[0027] When the clamping structure clamps the lowest member of the space frame foundation unit of space frame unit three, the clamping structure is subjected to a certain force. At this time, a support structure is installed at the support base. The support structure supports the clamping structure, improves the load-bearing capacity of the clamping structure, and prevents the clamping structure from deforming. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the supporting base in this invention;

[0030] Figure 2 This is a schematic diagram of the structure of the present invention, showing a fixed bolt ball bearing 1 and a bolt ball bearing 2 at one point on the mounting surface;

[0031] Figure 3 This is a schematic diagram of the structure of the limiting component fixed on the bolt ball bearing of the present invention;

[0032] Figure 4 This is a schematic diagram of the limiting component in this invention;

[0033] Figure 5 This is a schematic diagram of the structure of the present invention, in which a steel wire rope is pulled on a space frame unit;

[0034] Figure 6 This is a schematic diagram of the structure of the present invention, in which a steel wire rope is pulled on the second grid unit;

[0035] Figure 7 This is a schematic diagram of the structure of the present invention, in which a steel wire rope is pulled on the third grid unit;

[0036] Figure 8 This is a schematic diagram of the structure of the present invention, which uses a crane to lift the ends of the space frame unit that are far from the support base.

[0037] Figure 9 This is a schematic diagram of the structure of the present invention, in which a crane is used to lift the bolt balls of the space frame splicing unit into the embedded space of the right support base;

[0038] Figure 10 This is a schematic diagram of the structure of the entire space frame in this invention;

[0039] Figure 11 This is a schematic diagram of the rod clamping structure installed at the support base in this invention;

[0040] Figure 12 This is a schematic diagram of the structure of the fixing frame one in this invention;

[0041] Figure 13 This is a schematic diagram of the clamping plate in this invention;

[0042] Figure 14 This is a schematic diagram of the structure of the fixed connecting rod of the present invention;

[0043] Figure 15 This is a schematic diagram of the clamping plate clamping the rod in this invention;

[0044] Figure 16 This is a schematic diagram of the structure of the present invention with the support structure installed at the support base;

[0045] Figure 17 This is a schematic diagram of the connection between the threaded rod 2 and the fixing frame 2 in this invention;

[0046] Figure 18 This is a schematic diagram of the structure in which a positioning structure is installed between the space frame splicing unit and the space frame unit three in this invention;

[0047] Figure 19 This is a schematic diagram of the positioning structure in this invention;

[0048] Figure 20 This is a schematic diagram of the clamping structure in this invention;

[0049] Figure 21 This is a schematic diagram of the connecting plate in this invention;

[0050] Figure 22 This is a schematic diagram of the structure of the present invention, which involves welding connecting rods between two adjacent space frames.

[0051] In the diagram, 1-support base; 2-mounting surface one; 3-mounting surface two; 4-bolt ball bearing one; 5-bolt ball bearing two; 6-embedded space; 7-base plate one; 8-stiffening plate one; 9-base plate two; 10-support column; 11-stiffening plate two; 12-bolt ball; 13-rod; 14-limiting component; 15-wire rope; 16-fixing frame one; 17-clamping plate; 18-threaded rod one; 19-locking nut; 20-through hole; 21-rotating rod; 22-tightening end; 23-limiting plate; 24-Connecting rod; 25-Fixing bracket two; 26-Support plate; 27-Threaded rod two; 28-Hexagonal nut; 29-Slot; 30-U-groove; 31-Positioning structure; 32-Clamping plate; 33-Tie bolt; 34-Compression nut; 35-Connecting column; 36-Limit nut; 37-Connecting plate; 38-Mounting hole; 39-Embedded bolt; 40-Connecting rod; a-Space frame foundation unit; b-Space frame unit one; c-Space frame unit two; d-Space frame unit three; e-Space frame splicing unit. Detailed Implementation

[0052] like Figures 1 to 22 As shown, this invention provides a construction method for a dry coal shed grid structure, comprising the following steps:

[0053] S1. Construction of support base 1: Support base 1 is a concrete structure, forming a vertical mounting surface 1 2 and a horizontal mounting surface 2 3. Two rows of support bases 1 are distributed on the construction site, and the area between the two rows of support bases 1 is used for installing the space frame structure.

[0054] S2. Fix bolt ball bearing 4 at mounting surface 1 2 and bolt ball bearing 5 at mounting surface 2 3. Bolt ball bearing 4 and bolt ball bearing 5 form an embedded space 6.

[0055] Bolted ball bearing 4 includes a base plate 7 and a stiffening plate 8. The base plate 7 is fixed to the mounting surface 2 by fixing bolts, and the stiffening plate 8 is welded to the base plate 7 in a cross shape. Bolted ball bearing 5 includes a base plate 9, a support column 10, and a stiffening plate 11. The base plate 9 is fixed to the mounting surface 3 by fixing bolts. The support column 10 is welded between the base plate 9 and the stiffening plate 8, and the stiffening plate 11 is welded between the support column 10 and the base plate 9. The support column 10, the stiffening plate 11, and the stiffening plate 8 form an embedded space 6, in which the bolt ball can rotate.

[0056] S3. Weld and fix the rod 13 and bolt ball 12 on the ground to form the space frame foundation unit a. Embed the bolt ball 12 of the end of the space frame foundation unit a near the support base 1 into the embedding space 6 of the left support base 1. Then fix the limiting member 14 on the bolt ball support 5. The limiting member 14 is made of three steel plates welded together. The limiting member 14 wraps around the bolt ball 12 of the space frame foundation unit a, so that the bolt ball 12 of the space frame foundation unit a is limited in the embedding space 6 and can rotate in the embedding space 6.

[0057] S4. Using two 50t cranes, lift the end of the space frame foundation unit a away from the support base 1. At this time, the bolt ball 12 of the space frame foundation unit a rotates at a set angle in the embedded space 6. Then, weld the rod 13 and the bolt ball 12 to the end of the space frame foundation unit a away from the support base 1 to form space frame unit one (e.g., Figure 5 As shown, there are 12 balls at the bottom of the first space frame unit. Then, a steel wire rope 15 is stretched between the 3rd ball node and the 11th ball node of the first space frame unit. The steel wire rope 15 is adjusted and tensioned to control the internal force and deformation of the first space frame unit.

[0058] S5. Change the hoisting position of space frame unit one, moving the hoisting point outwards. Use two 100t cranes to lift the end of space frame unit one (b) away from the support base 1. At this time, the bolt ball 12 of the space frame foundation unit a of space frame unit one (b) rotates at a set angle in the embedded space 6. Then weld the rod 13 and bolt ball 12 to the end of space frame unit one (b) away from the support base 1 to form space frame unit two (e.g., ...). Figure 6 As shown, there are a total of 19 balls below the second space frame unit. Then, a steel wire rope 15 is strung between the second and eighteenth ball nodes of the second space frame unit to increase the lifting strength. At the same time, the steel wire rope 15 is adjusted and tensioned to control the internal force and deformation of the second space frame unit.

[0059] S6. Change the hoisting position of space frame unit two, moving the hoisting point outwards. Use two 150t cranes to lift the end of space frame unit two c away from the support base 1. At this time, the bolt ball 12 of the space frame foundation unit a of space frame unit two c rotates at a set angle in the embedded space 6. Then weld the rod 13 and bolt ball 12 to the end of space frame unit two c away from the support base 1 to form space frame unit three (e.g., ...). Figure 7 As shown, there are a total of 26 balls at the bottom of space frame unit three. Then, a steel wire rope 15 is stretched between the first ball node and the 25th ball node of space frame unit three, and the steel wire rope 15 is adjusted and tensioned to control the internal force and deformation of space frame unit one b.

[0060] S7. Weld and fix member 13 and bolt ball 12 on the ground to assemble and form space frame splicing unit e. Then change the hoisting position of space frame unit three, moving the hoisting point outward. Use two 260t cranes to lift the end of space frame unit three d away from the support base 1, and then install the member clamping structure at the support base 1. Use the member clamping structure to clamp the lowest member 13 of the space frame foundation unit a of space frame unit three d. Then install the support structure at the support base 1, and the support structure supports the member clamping structure. Then use one 100t crane to lift the bolt ball 12 of space frame splicing unit e into the embedded space 6 of the right support base 1. Then install the positioning structure between space frame splicing unit e and space frame unit three d. Then weld member 13 between space frame splicing unit e and space frame unit three d to perform the supplementary member operation, forming the complete space frame. After the entire space frame is assembled, observe it for about 15 minutes to see if the deviation of the deflection value of the entire space frame exceeds the design value, and make corresponding adjustments based on the measurement results.

[0061] S8. Unload the steel wire rope 15 on the entire space frame, starting from the center of the space frame and moving towards the support base 1. Unload at intervals of about 15 minutes each time, closely observing the overall descent of the space frame. If any abnormality is found, stop unloading immediately, handle the situation properly, and then continue unloading. Next, weld the bottom bolt ball 12 of the space frame foundation unit a to bolt ball support 4, bolt ball support 5, and limit member 14. At the same time, weld the bottom bolt ball 12 of the space frame splicing unit e to bolt ball support 4 and bolt ball support 5. Then, remove the member clamping structure, support structure, and positioning structure, and finally detach the crane from the entire space frame.

[0062] S9. Assemble the connecting rods on the ground, and then weld the connecting rods between two adjacent space frames to form a space frame structure. Then remove the bolt ball support 4 from the mounting surface 2 and remove the bolt ball support 5 from the mounting surface 3. Then move the space frame structure to the design position.

[0063] Based on the above steps, the present invention provides a specific design for the rod clamping structure: the rod clamping structure includes a fixing frame 16 and a clamping plate 17. Two clamping plates 17 are used to clamp the rod 13. Each clamping plate 17 is mounted on one of the two fixing frames 16. The fixing frame 16 has a through hole 20 with a rectangular cross-section. The clamping plate 17 has a threaded rod 18 that passes through the through hole 20 and can move up and down within the through hole 20. The height of the clamping plate 17 can be adjusted according to the position of the rod 13. Each threaded rod 18 has two locking nuts 19, which are locked to the front and rear sides of the fixing frame 16. When the crane lifts the end of the space frame unit 3d away from the support base 1, the fixing bracket 16 is set on the pre-embedded bolt 39 of the support base 1, and then the fixing nut is screwed into the pre-embedded bolt 39 to fix the fixing bracket 16 on the support base 1. Then, by changing the position of the two locking nuts 19 on the threaded rod 18, the clamping plate 17 is moved towards the rod 13 and attached to the surface of the rod 13. Then, the locking nuts 19 are locked on the clamping plate 17 so that the clamping plate 17 can press the circular rod 13. Moreover, the fixing bracket 16 and the clamping plate 17 are steel structures with high strength and are not easily deformed.

[0064] The clamping plate 17 has a threaded hole connected to a rotating rod 21. One end of the rotating rod 21 is provided with a tightening end 22, and the other end of the rotating rod 21 is provided with a limiting plate 23. After the clamping plate 17 clamps the rod 13, the tightening end 22 is tightened, causing the limiting plate 23 to move towards the bolt ball support 4 and limit the limiting plate 23 on the stiffening plate 8 of the bolt ball support 4. The force of the rod 13 is transmitted to the clamping plate 17, and the clamping plate 17 transmits the force to the bolt ball support 4 through the rotating rod 21 and the limiting plate 23, which can increase the force-bearing capacity of the clamping plate 17 and meet the limiting requirements of the clamping plate 17 on the rod 13.

[0065] The present invention provides a specific design for the support structure: the support structure includes a second fixed frame 25 and a second threaded rod 27. The second fixed frame 25 is provided with a U-shaped groove 30. The second threaded rod 27 is threadedly connected to the threaded hole of the second fixed frame 25, so that the second threaded rod 27 can be vertically adjusted on the second fixed frame 25. The second threaded rod 27 is welded with a hexagonal nut 28 to facilitate the rotation of the second threaded rod 27. A support plate 26 is welded to the end of the second threaded rod 27. After clamping plate 17 clamps rod 13, the U-shaped groove 30 of fixing bracket 25 is slid horizontally into the pre-embedded bolt 39 of support base 1. At this time, support plate 26 is located below clamping plate 17. Then, fixing nuts are screwed into pre-embedded bolts 39 to fix fixing bracket 25 to support base 1. Then, hexagonal nut 28 is turned to raise threaded rod 27 and support plate 26 to clamping plate 17. The force on clamping plate 17 can be transmitted to support base 1 through fixing bracket 25 and threaded rod 27, increasing the load-bearing capacity of clamping plate 17 and meeting the limiting requirements of clamping plate 17 for rod 13. Fixing bracket 16 fixes connecting rod 24 with mounting bolts. Fixing bracket 25 has a groove 29 through which connecting rod 24 passes, so that fixing bracket 25 and fixing bracket 16 are connected as an integral structure. At this time, fixing bracket 25 and fixing bracket 16 have sufficient load-bearing capacity and are not prone to deformation.

[0066] The space frame unit 3d of this invention is lifted by a crane and simultaneously limited by the rod clamping structure. The space frame unit 3d always maintains the set lifting state. At this time, if the space frame splicing unit e can be limited on the space frame unit 3d, the rod addition operation becomes safe and simple. Therefore, the positioning structure 31 of this invention is specifically designed as follows: the positioning structure 31 includes two clamping structures and a connecting plate 37. The clamping structure includes two clamping plates 32, and a tie bolt 33 is provided between the two clamping plates 32. The tie bolt 33 is bolted to a clamping nut 34. This clamping structure can clamp rods 13 of different specifications. When the bolt ball 12 of the space frame splicing unit e is lowered into the embedded space 6 of the right support base 1, one of the clamping structures is installed on the space frame unit 3d, and two clamping plates 32 clamp the rods 13 of the space frame unit 3d and tighten the clamping nut 34. Another clamping structure is installed on the space frame splicing unit e, and two clamping plates 32 clamp the rods 13 of the space frame splicing unit e and tighten the clamping nut 34. Next, a connecting plate 37 is installed between the two clamping structures. The connecting post 35 on the outside of the clamping plate 32 passes through the mounting hole 38 of the connecting plate 37. Then, a limiting nut 36 is screwed into the connecting post 35 and tightened so that the space frame splicing unit e is limited on the space frame unit 3d. The space frame splicing unit e and the space frame unit 3d form a stable system, which can quickly weld the rod 13 between the space frame splicing unit e and the space frame unit 3d. This operation is safe and simple, and can improve the assembly accuracy of the supplementary rods of the space frame splicing unit e and the space frame unit 3d, and improve the construction quality of the entire space frame.

[0067] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A clamping and supporting device for the construction of a coal shed grid structure, characterized in that, Includes rod clamping structures and support structures; The rod clamping structure includes a fixing frame and clamping plates. Two clamping plates are used to clamp the rods. Each clamping plate is mounted on one of the two fixing frames. Each fixing frame has a through hole, and each clamping plate has a threaded rod passing through the through hole. The threaded rod can move up and down within the through hole. Each threaded rod has two locking nuts, which are locked to the front and rear sides of the fixing frame. When a crane lifts the end of the space frame unit three away from the support base, the fixing frame is positioned onto the pre-embedded screws on the support base. The clamping plate is secured by bolting and screwing in the fixing nuts on the pre-embedded bolts to fix the fixing frame one onto the support base. Then, by changing the position of the two locking nuts on the threaded rod one, the clamping plate is moved towards the rod and attached to the surface of the rod. Then, the locking nuts are locked onto the clamping plate. The threaded hole of the clamping plate is threadedly connected to a rotating rod. One end of the rotating rod is provided with a tightening end, and the other end of the rotating rod is provided with a limiting plate. After the clamping plate clamps the rod, the tightening end is turned to move the limiting plate towards the bolt ball support one and limit the limiting plate on the bolt ball support one. The support structure includes a second fixed frame and a second threaded rod. The second fixed frame has a U-shaped groove, and the second threaded rod is threaded into the threaded hole of the second fixed frame, allowing the second threaded rod to be vertically adjusted on the second fixed frame. The second threaded rod is welded with a hexagonal nut, and a support plate is welded to the end of the second threaded rod. After the clamping plate clamps the rod, the U-shaped groove of the second fixed frame is slid into the pre-embedded bolt of the support base. At this time, the support plate is located below the clamping plate. Then, the fixing nut is screwed into the pre-embedded bolt to fix the second fixed frame on the support base. Then, the hexagonal nut is screwed in to raise the second threaded rod and make the support plate support the clamping plate. The first fixed frame is fixed with a connecting rod by mounting bolts, and the second fixed frame has a slot through which the connecting rod passes. In use, the rods and bolt balls are welded and fixed on the ground to form a space frame splicing unit. Then, the hoisting position of space frame unit three is changed, and a crane is used to lift the end of space frame unit three away from the support base. Then, a rod clamping structure is installed at the support base to clamp the lowest rod of the space frame foundation unit of space frame unit three. Then, a support structure is installed at the support base to support the rod clamping structure. Then, a crane is used to lift the bolt balls of the space frame splicing unit into the embedded space of the right support base. Then, a positioning structure is installed between the space frame splicing unit and space frame unit three. Then, rods are welded between the space frame splicing unit and space frame unit three to perform rod addition operations, forming a complete space frame.

2. The clamping and supporting device for the construction of a dry coal shed grid structure according to claim 1, characterized in that: The positioning structure includes two clamping structures and a connecting plate. The clamping structure includes two clamping plates with tie bolts between them. The tie bolts are threaded with compression nuts. When the bolt ball of the space frame splicing unit is lowered into the embedded space of the right support base, one of the clamping structures is installed on the space frame unit three. The two clamping plates clamp the rods of the space frame unit three and tighten the compression nuts. The other clamping structure is installed on the space frame splicing unit. The two clamping plates clamp the rods of the space frame splicing unit and tighten the compression nuts. Then, a connecting plate is inserted between the two clamping structures. The connecting post on the outside of the clamping plate passes through the mounting hole of the connecting plate. Then, a limit nut is screwed into the connecting post and tightened.

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