An assembled large-scale X-shaped steel pipe column welding construction operation platform

Abstract

The present invention relates to the field of X steel pipe column construction, and particularly to an assembled large-scale X steel pipe column welding construction operation platform. The device includes a mounting plate, a guardrail, a fastening plate, etc.; guardrails are fixedly connected to both the mounting plate and the fastening plate. A fastening groove is formed on the mounting plate, and six square grooves are formed on the fastening plate. The operator installs the guardrail on the mounting plate and the fastening plate on the ground and uses external equipment to lift the mounting plate, the fastening plate, the guardrail, etc. to a suitable position. At this time, the mounting box will slide within the fastening plate until the inner wall of the fastening plate abuts against the mounting box. The square grooves on the fastening plate will limit the wedge-shaped block, so that the mounting plate and the fastening plate are initially fixed. The fastening groove on the mounting plate will limit the fastening plate, so that the mounting plate and the fastening plate are further fixed, making the connection between the mounting plate and the fastening plate more stable. Then the worker climbs onto the mounting plate and the fastening plate with the help of tools, and the guardrail can protect the worker, thus facilitating the worker to carry out welding construction on the X steel pipe column.

Description

Technical Field

[0001] The present invention relates to the field of X steel pipe column construction, and particularly to an assembled large-scale X steel pipe column welding construction operation platform. Background Art

[0002] Compared with conventional concrete cooling towers, the X steel pipe column has high technical requirements, high quality requirements, great construction difficulty, and novel technology. The X steel pipe column adopts the construction process of factory processing, on-site assembly, and integral hoisting. Therefore, it is necessary to set up a welding construction operation platform during welding operations to assist operators in on-site assembly welding of the X steel pipe column.

[0003] Most of the existing welding operation platforms are directly welded to the steel pipe column with angle steel or channel steel. After construction, the welded parts of the angle steel or channel steel and the steel pipe column need to be cut off, which damages the paint of the steel pipe column and seriously affects the quality of the finished steel pipe column. At the same time, the existing operation platform erection process is complex, which poses great safety hazards when the operation platform is erected at high altitude. Summary of the Invention

[0004] In order to overcome the above-mentioned drawbacks, the technical problem of the present invention is to provide an assembled large-scale X steel pipe column welding construction operation platform that is convenient for quick assembly and disassembly, can be more stably fixed without damaging the integrity of the paint surface of the steel pipe column, and is convenient for workers to carry out welding construction on the steel pipe column.

[0005] An assembled large-scale X steel pipe column welding construction operation platform includes a mounting plate, a fastening plate, a guardrail, a locking mechanism, and a clamping mechanism. Guardrails are fixedly connected to both the mounting plate and the fastening plate. A clamping groove is formed on the mounting plate, and six square grooves are formed on the fastening plate. The locking mechanism is arranged on the mounting plate and is connected to the fastening plate. The clamping mechanism is arranged on the fastening plate.

[0006] Further, the locking mechanism includes a mounting box, a wedge block, a horizontal spring, a pressing block, and a return spring. Three mounting boxes are slidably connected to the mounting plate. Two wedge blocks are slidably connected to the mounting box. Two horizontal springs are connected between the mounting box and the mounting plate. Three pressing blocks are fixedly connected to the mounting plate. The mounting box is slidably connected to the pressing block. A return spring is connected to each square groove on the fastening plate, and a rectangular plate is provided at one end of the return spring.

[0007] Further, the clamping mechanism includes a clamping plate, a ratchet wheel, an inclined plate, a set of ratchet bars, and a compression spring. Three clamping plates are rotatably connected to the fastening plate. A ratchet wheel is fixedly connected to the clamping plate. Three inclined plates are slidably connected to the fastening plate. A set of ratchet bars is fixedly connected to the inclined plate. The set of ratchet bars includes a ratchet bar, a small spring, and a ratchet bar plate. The ratchet bar plate is fixedly connected to the inclined plate. The ratchet bar is slidably connected to the ratchet bar plate. A number of small springs are connected between the ratchet bar and the ratchet bar plate. The ratchet bar meshes with the ratchet wheel. A compression spring is connected between the ratchet bar plate and the fastening plate.

[0008] Further explanation: It further includes a clamping mechanism. The clamping mechanism is arranged on the mounting plate and the fastening plate. The clamping mechanism includes a pushing plate, a clamping rack, a clamping buckle, a clamping gear and a cylindrical spring. Two pushing plates are slidably connected to both the mounting plate and the fastening plate. Two clamping racks are fixedly connected to the pushing plate. Two clamping buckles are rotatably connected to both the mounting plate and the fastening plate. Two clamping gears are fixedly connected to the clamping buckle. The clamping gear meshes with the clamping rack. One cylindrical spring is connected between two of the pushing plates and the mounting plate, and one cylindrical spring is respectively connected between the other two pushing plates and the fastening plate.

[0009] Further explanation: It further includes a supporting mechanism. The supporting mechanism is arranged on the mounting plate. The supporting mechanism includes a supporting plate, a torsion spring, a supporting gear, a pushing rod and a supporting rack. Two supporting plates are rotatably connected to the mounting plate. A torsion spring is connected between the mounting plate and the supporting plate. A supporting gear is fixedly connected to the supporting plate. Two pushing rods are slidably connected to the mounting plate. The two pushing rods are respectively fixedly connected to the rectangular plates on two of the reset springs. A supporting rack is fixedly connected to the pushing rod. The supporting rack meshes with the supporting gear.

[0010] Further explanation: It further includes a rubber ring and a short spring. Two rubber rings are slidably connected to both the mounting plate and the fastening plate. A number of short springs are respectively connected between the two rubber rings and the mounting plate and the fastening plate.

[0011] Further explanation: It further includes a clamping post. Four clamping posts are fixedly connected to the two clamping buckles on the fastening plate. Four clamping slots are opened on the two clamping buckles on the mounting plate.

[0012] Further explanation: The clamping buckle is of an arc-shaped structure.

[0013] Further explanation: The clamping buckle is located below the mounting plate and the fastening plate.

[0014] The beneficial effects of the present invention are as follows: 1. When welding construction is to be carried out on the X steel pipe column, the operator installs the guardrail on the mounting plate and the fastening plate on the ground. Then, the operator uses external equipment to lift the mounting plate, the fastening plate and the guardrail to a proper position. At this time, the mounting box will slide in the fastening plate until the inner wall of the fastening plate abuts against the mounting box. The square groove on the fastening plate will limit the wedge block, so that the mounting plate and the fastening plate are initially fixed. The fastening groove on the mounting plate will limit the fastening plate, so that the mounting plate and the fastening plate are further fixed, making the connection between the mounting plate and the fastening plate more stable. Then the worker climbs onto the mounting plate and the fastening plate with the help of tools. The guardrail can protect the worker, thus facilitating the worker to carry out welding construction on the X steel pipe column.

[0015] 2. After the construction is completed, the worker gets off the mounting plate and the fastening plate. The mounting plate moves away from the fastening plate, driving the extrusion block to move away from the fastening plate, so that the wedge block disengages from the square groove on the fastening plate, and the mounting plate and the fastening plate are initially separated. At the same time, as the extrusion block moves away from the fastening plate, it no longer presses the inclined plate, and the mounting plate moves to press the fastening buckle to swing upward, so that the mounting plate and the fastening plate are completely separated, facilitating the quick disassembly of the mounting plate and the fastening plate.

[0016] 3. When the mounting plate and the fastening plate approach the fastening plate, the X steel pipe column will squeeze the pushing plate, causing the pushing plate to move away from the X steel pipe column. The movement of the pushing plate drives the clamping rack to move, so that the clamping buckle clamps the X steel pipe column, enabling the mounting plate, the fastening plate, the guardrail, etc. to be stably fixed on the X steel pipe column, making it more convenient for workers to carry out welding construction on the X steel pipe column. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the first type of the present invention.

[0018] Figure 2 It is a three-dimensional structure schematic diagram of the second type of the present invention.

[0019] Figure 3 It is a partially sectional three-dimensional structure schematic diagram of the present invention.

[0020] Figure 4 It is a partially sectional three-dimensional structure schematic diagram of the first type of the locking mechanism of the present invention.

[0021] Figure 5 For the present invention Figure 4 An enlarged three-dimensional structure schematic diagram of A in it.

[0022] Figure 6 It is a partially sectional three-dimensional structure schematic diagram of the clamping mechanism of the present invention.

[0023] Figure 7 It is a partially sectional three-dimensional structure schematic diagram of the second type of the locking mechanism of the present invention.

[0024] Figure 8 For the present invention Figure 7 An enlarged three-dimensional structure schematic diagram of B in it.

[0025] In the above drawings: 1: mounting plate, 2: fastening plate, 3: guardrail, 41: mounting box, 42: wedge block, 43: horizontal spring, 45: extrusion block, 46: return spring, 51: fastening plate, 52: ratchet wheel, 53: inclined plate, 54: ratchet bar group, 55: compression spring, 61: pushing plate, 62: clamping rack, 63: clamping buckle, 64: clamping gear, 65: cylindrical spring, 71: support plate, 72: torsion spring, 73: support gear, 74: pushing rod, 75: support rack, 81: rubber ring, 82: short spring, 9: clamping post. Detailed implementation mode

[0026] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which the presently preferred embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and fully convey the scope of the invention to those skilled in the art.

[0027] Embodiment 1: An assembled large-scale X-shaped steel pipe column welding construction operation platform, as Figures 1-4 shown, comprising a mounting plate 1, a fastening plate 2, a guardrail 3, a locking mechanism and a fastening mechanism. The guardrail 3 is connected to both the mounting plate 1 and the fastening plate 2 by bolts. A fastening groove is formed in the mounting plate 1, and six square grooves are formed in the fastening plate 2. The locking mechanism is arranged on the mounting plate 1 and is connected to the fastening plate 2. The fastening mechanism is arranged on the fastening plate 2.

[0028] The locking mechanism includes a mounting box 41, a wedge block 42, a horizontal spring 43, an extrusion block 45 and a return spring 46. Three mounting boxes 41 are slidably connected to the mounting plate 1. Two wedge blocks 42 are slidably connected to the mounting box 41. Two horizontal springs 43 are connected between the mounting box 41 and the mounting plate 1. Three extrusion blocks 45 are connected to the mounting plate 1 by bolts. The mounting box 41 is slidably connected to the extrusion block 45. A return spring 46 is connected to each square groove in the fastening plate 2, and a rectangular plate is provided at one end of the return spring 46. [[ID=(-14)]] [[ID=(-15)]]

[0029] It further includes a clamping mechanism, which is arranged on the mounting plate 1 and the buckling plate 2. The clamping mechanism includes a push plate 61, a clamping rack 62, a clamping buckle 63, a clamping gear 64 and a cylindrical spring 65. Two push plates 61 are slidably connected to both the mounting plate 1 and the buckling plate 2. Two clamping racks 62 are welded on the push plate 61. Two clamping buckles 63 are rotatably connected to both the mounting plate 1 and the buckling plate 2. The clamping buckle 63 is of an arc structure and is located below the mounting plate 1 and the buckling plate 2. Two clamping gears 64 are connected to the clamping buckle 63 by flat keys. The clamping gear 64 meshes with the clamping rack 62. A cylindrical spring 65 is connected between one of the two push plates 61 and the mounting plate 1, and a cylindrical spring 65 is respectively connected between the other two push plates 61 and the buckling plate 2.

[0030] When welding construction needs to be carried out on the X steel pipe column, first, the operator installs the guardrail 3 on the mounting plate 1 and the buckling plate 2 on the ground. Then, the operator uses external equipment to lift the mounting plate 1, the buckling plate 2, the guardrail 3, etc. to a suitable position, so that the mounting plate 1 and the buckling plate 2 are respectively located on both sides of the X steel pipe column. At the same time, the operator pushes the mounting plate 1 in the direction close to the buckling plate 2. At this time, the mounting box 41 will slide in the buckling plate 2 until the inner wall of the buckling plate 2 abuts against the mounting box 41, causing the mounting box 41 to stop moving. The mounting plate 1 continues to move in the direction close to the buckling plate 2, and the horizontal spring 43 will be compressed. The movement of the mounting plate 1 drives the extrusion block 45 to move in the direction close to the buckling plate 2. The movement of the extrusion block 45 will push the wedge block 42 to slide on the mounting box 41 until the wedge block 42 contacts the square groove on the buckling plate 2. The square groove on the buckling plate 2 will limit the wedge block 42. At this time, when the extrusion block 45 continues to move, it will squeeze the wedge block 42, causing the wedge block 42 to move in the direction close to the return spring 46, and the return spring 46 will be compressed. At the same time, the wedge block 42 slides in the square groove on the buckling plate 2, and the square groove on the buckling plate 2 will limit the wedge block 42. The wedge block 42 will limit the mounting box 41, and the mounting box 41 will limit the mounting plate 1, so that the mounting plate 1 and the buckling plate 2 are initially fixed. At the same time, when the mounting box 41 slides in the buckling plate 2, it will squeeze the inclined plate 53, causing the inclined plate 53 to slide in the direction close to the compression spring 55. The sliding of the inclined plate 53 drives the ratchet bar group 54 to slide in the direction close to the compression spring 55, and the compression spring 55 will be compressed. At the same time, the movement of the ratchet bar in the ratchet bar group 54 will drive the ratchet wheel 52 to rotate counterclockwise. The counterclockwise rotation of the ratchet wheel 52 will drive the clamping plate 51 to swing in the direction close to the mounting plate 1 until the clamping plate 51 contacts the clamping groove on the mounting plate 1. The clamping groove on the mounting plate 1 will limit the clamping plate 51, so that the mounting plate 1 and the buckling plate 2 are further fixed, making the connection between the mounting plate 1 and the buckling plate 2 more stable. Then the worker climbs onto the mounting plate 1 and the buckling plate 2 with the help of tools. The guardrail 3 can protect the worker, thus facilitating the worker to carry out welding construction on the X steel pipe column.

[0031] Example 2: On the basis of Example 1, as Figures 7-8 shown, it further includes a support mechanism. The support mechanism is arranged on the mounting plate 1. The support mechanism includes a support plate 71, a torsion spring 72, a support gear 73, a push rod 74 and a support rack 75. Two support plates 71 are rotatably connected to the mounting plate 1. A torsion spring 72 is connected between the mounting plate 1 and the support plate 71. A support gear 73 is connected to the support plate 71 by a flat key. Two push rods 74 are slidably connected to the mounting plate 1. The two push rods 74 are respectively fixedly connected to the rectangular plates on two of the return springs 46. A support rack 75 is connected to the push rod 74 by a bolt. The support rack 75 meshes with the support gear 73.

[0032] After the construction is completed, when the worker gets off the mounting plate 1 and the fastening plate 2, it is necessary to separate the mounting plate 1 and the fastening plate 2. The movement of the mounting plate 1 away from the fastening plate 2 drives the extrusion block 45 to move away from the fastening plate 2. The horizontal spring 43 will reset. The extrusion block 45 moving away from the fastening plate 2 no longer extrudes the wedge block 42. The return spring 46 will reset. The reset of the return spring 46 drives the wedge block 42 to reset, so that the wedge block 42 is disengaged from the square groove on the fastening plate 2, so that the fastening plate 2 no longer limits the wedge block 42. The movement of the mounting plate 1 away from the fastening plate 2 drives the mounting box 41 to move away from the fastening plate 2, so that the mounting plate 1 and the fastening plate 2 are initially separated. At the same time, the extrusion block 45 moving away from the fastening plate 2 no longer extrudes the inclined plate 53. The compression spring 55 will reset. The reset of the compression spring 55 drives the inclined plate 53 and the ratchet bar group 54 to reset, so that the ratchet bar moves into contact with the ratchet wheel 52. The ratchet wheel 52 will squeeze the ratchet bar, so that the ratchet bar moves downward. Several small springs will be compressed. The downward movement of the ratchet bar no longer meshes with the ratchet wheel 52. At the same time, the movement of the mounting plate 1 will squeeze the buckle plate 51, so that the buckle plate 51 swings upward. At this time, the operator pulls the buckle plate 51, so that the buckle plate 51 is disengaged from the buckle groove on the mounting plate 1 until the buckle plate 51 and the ratchet wheel 52 are reset, so that the mounting plate 1 and the fastening plate 2 are completely separated. After the ratchet bar group 54 is reset and disengaged from the ratchet wheel 52, the small spring will reset. The reset of the small spring drives the ratchet bar to reset, so that the ratchet bar meshes with the ratchet wheel 52 again, which is convenient for quickly disassembling the mounting plate 1 and the fastening plate 2.

[0033] Example 3: On the basis of Example 2, as Figures 3-5As shown in the figure, the fastening mechanism includes a fastening plate 51, a ratchet wheel 52, an inclined plate 53, a ratchet bar group 54 and a compression spring 55. Three fastening plates 51 are rotatably connected to the fastening plate 2. A ratchet wheel 52 is fixedly connected to the fastening plate 51. Three inclined plates 53 are slidably connected to the fastening plate 2. A ratchet bar group 54 is bolted to the inclined plate 53. The ratchet bar group 54 includes a ratchet bar, a small spring and a ratchet bar plate. A ratchet bar plate is bolted to the inclined plate 53. A ratchet bar is slidably connected to the ratchet bar plate. A number of small springs are connected between the ratchet bar and the ratchet bar plate. The ratchet bar meshes with the ratchet wheel 52. A compression spring 55 is connected between the ratchet bar plate and the fastening plate 2.

[0034] When the mounting plate 1 and the fastening plate 2 approach the fastening plate 2, the X steel pipe column will squeeze and push the push plate 61, causing the push plate 61 to move away from the X steel pipe column. The cylindrical spring 65 will be compressed. The movement of the push plate 61 drives the clamping rack 62 to move. The movement of the clamping rack 62 drives the clamping gear 64 to rotate. The rotation of the clamping gear 64 drives the clamping buckle 63 to swing towards the X steel pipe column, causing the clamping buckle 63 to clamp the X steel pipe column, so that the mounting plate 1, the fastening plate 2, the guardrail 3, etc. can be stably fixed on the X steel pipe column, making it more convenient for workers to carry out welding construction on the X steel pipe column. Until the mounting plate 1, the fastening plate 2, the guardrail 3, etc. are separated from the X steel pipe column, the push plate 61 will be separated from the X steel pipe column, so that the X steel pipe column no longer squeezes the push plate 61. The cylindrical spring 65 will reset. The reset of the cylindrical spring 65 drives the push plate 61 to reset. The reset of the push plate 61 drives the clamping rack 62 to reset. The reset of the clamping rack 62 drives the clamping gear 64 to rotate in the reverse direction. The reverse rotation of the clamping gear 64 drives the clamping buckle 63 to swing away from the X steel pipe column, causing the clamping buckle 63 to no longer clamp the X steel pipe column.

[0035] Example 4: On the basis of Example 3, as Figures 1-6 shown, it further includes a rubber ring 81 and a short spring 82. Two rubber rings 81 are slidably connected to both the mounting plate 1 and the fastening plate 2. A number of short springs 82 are connected between the two rubber rings 81 and the mounting plate 1 and the fastening plate 2 respectively.

[0036] When the extrusion block 45 extrudes the wedge block 42, causing the wedge block 42 to extrude the return spring 46 and the push rod 74, the return spring 46 will be compressed, and the push rod 74 will move away from the wedge block 42. The movement of the push rod 74 will drive the support rack 75 to move. The movement of the support rack 75 will drive the support gear 73 to rotate. The rotation of the support gear 73 drives the support plate 71 to rotate, and the torsion spring 72 will be twisted. The X steel pipe column will abut against the support plate 71, further enabling the mounting plate 1, the fastening plate 2, the guardrail 3, etc. to be stably fixed on the X steel pipe column, further facilitating the welding construction of the X steel pipe column by workers. When the extrusion block 45 no longer extrudes the wedge block 42, the return spring 46 will reset, causing the wedge block 42 and the push rod 74 to move towards the mounting box 41. The movement of the push rod 74 drives the support rack 75 to move. The movement of the support rack 75 drives the support gear 73 to rotate in the reverse direction. At the same time, the torsion spring 72 will reset. The reset of the torsion spring 72 and the reverse rotation of the support gear 73 drive the support plate 71 to swing downward, causing the support plate 71 to disengage from the X steel pipe column.

[0037] Embodiment 5: On the basis of Embodiment 4, as Figures 1-3 shown, it further includes a clamping post 9. Four clamping posts 9 are bolted to each of the two clamping buckles 63 on the fastening plate 2, and four card slots are formed in each of the two clamping buckles 63 on the mounting plate 1.

[0038] When the mounting plate 1 and the fastening plate clamp the X steel pipe column, the X steel pipe column will come into contact with the rubber ring 81. At the same time, the short spring 82 makes the rubber ring 81 fit more closely with the X steel pipe column, enabling the mounting plate 1 and the fastening plate 2 to come into closer contact with the X steel pipe column, and enabling the mounting plate 1, the fastening plate 2, the guardrail 3, etc. to be stably fixed on the X steel pipe column.

[0039] When the clamping buckle 63 with the clamping post 9 contacts the clamping buckle 63 with the card slot, the clamping post 9 will insert into the card slot on the clamping buckle 63, making the contact between the clamping buckle 63 with the clamping post 9 and the clamping buckle 63 with the card slot more firm, and enabling the mounting plate 1, the fastening plate 2, the guardrail 3, etc. to be more stably fixed on the X steel pipe column.

[0040] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. An assembled large-scale X-shaped steel pipe column welding construction operation platform, characterized in that: It includes a mounting plate (1), a fastening plate (2), a guardrail (3), a locking mechanism and a fastening mechanism. Guardrails (3) are fixedly connected to both the mounting plate (1) and the fastening plate (2). A fastening groove is formed on the mounting plate (1), and six square grooves are formed on the fastening plate (2). The locking mechanism is arranged on the mounting plate (1), the locking mechanism is connected to the fastening plate (2), and the fastening mechanism is arranged on the fastening plate (2). The locking mechanism includes a mounting box (41), a wedge block (42), a horizontal spring (43), a pressing block (45) and a return spring (46). Three mounting boxes (41) are slidably connected to the mounting plate (1). Two wedge blocks (42) are slidably connected to the mounting box (41). Two horizontal springs (43) are connected between the mounting box (41) and the mounting plate (1). Three pressing blocks (45) are fixedly connected to the mounting plate (1). The mounting box (41) is slidably connected to the pressing block (45). A return spring (46) is connected to each square groove on the fastening plate (2), and a rectangular plate is provided at one end of the return spring (46). The fastening mechanism includes a fastening plate (51), a ratchet wheel (52), an inclined plate (53), a ratchet bar group (54) and a compression spring (55). Three fastening plates (51) are rotatably connected to the fastening plate (2). A ratchet wheel (52) is fixedly connected to the fastening plate (51). Three inclined plates (53) are slidably connected to the fastening plate (2). A ratchet bar group (54) is fixedly connected to the inclined plate (53). The ratchet bar group (54) includes a ratchet bar, a small spring and a ratchet bar plate. A ratchet bar plate is fixedly connected to the inclined plate (53). A ratchet bar is slidably connected to the ratchet bar plate. A number of small springs are connected between the ratchet bar and the ratchet bar plate. The ratchet bar meshes with the ratchet wheel (52). A compression spring (55) is connected between the ratchet bar plate and the fastening plate (2). It also includes a clamping mechanism. The clamping mechanism is arranged on the mounting plate (1) and the fastening plate (2). The clamping mechanism includes a pushing plate (61), a clamping rack (62), a clamping buckle (63), a clamping gear (64) and a cylindrical spring (65). Two pushing plates (61) are slidably connected to both the mounting plate (1) and the fastening plate (2). Two clamping racks (62) are fixedly connected to the pushing plate (61). Two clamping buckles (63) are rotatably connected to both the mounting plate (1) and the fastening plate (2). Two clamping gears (64) are fixedly connected to the clamping buckle (63). The clamping gear (64) meshes with the clamping rack (62). A cylindrical spring (65) is connected between one of the two pushing plates (61) and the mounting plate (1), and a cylindrical spring (65) is respectively connected between the other two pushing plates (61) and the fastening plate (2).

2. The assembled large-scale X-shaped steel pipe column welding construction operation platform according to claim 1, wherein: It further includes a support mechanism which is arranged on the mounting plate (1). The support mechanism includes a support plate (71), a torsion spring (72), a support gear (73), a push rod (74) and a support rack (75). Two support plates (71) are rotatably connected to the mounting plate (1), and a torsion spring (72) is connected between the mounting plate (1) and the support plate (71). A support gear (73) is fixedly connected to the support plate (71). Two push rods (74) are slidably connected to the mounting plate (1). The two push rods (74) are respectively fixedly connected to the rectangular plates on two of the return springs (46). A support rack (75) is fixedly connected to the push rod (74), and the support rack (75) meshes with the support gear (73).

3. The assembled large X-shaped steel pipe column welding construction operation platform according to claim 2, characterized in that: It further includes a rubber ring (81) and a short spring (82). Two rubber rings (81) are slidably connected to both the mounting plate (1) and the fastening plate (2), and a number of short springs (82) are connected between the two rubber rings (81) and the mounting plate (1) and the fastening plate (2) respectively.

4. The assembled large X-shaped steel pipe column welding construction operation platform according to claim 3, characterized in that: It further includes a clamping post (9). Four clamping posts (9) are fixedly connected to the two clamping clasps (63) on the fastening plate (2), and four card slots are formed on the two clamping clasps (63) on the mounting plate (1).

5. The assembled large-scale X-shaped steel pipe column welding construction operation platform according to claim 1, characterized in that: The clamping clasp (63) is of an arc-shaped structure.

6. A fabricated large-scale X-shaped steel pipe column welding construction operation platform according to claim 1, characterized in that: The clamping clasp (63) is located below the mounting plate (1) and the fastening plate (2).

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