Cantilever cornice operating platform

Abstract

The utility model relates to the technical field of cornice operation platforms, in particular to an overhanging cornice operation platform which comprises a truss, a steel wire rope set, an operation platform, a driving system and a rail system, the top of the steel wire rope set is detachably connected with the bottom of the truss, and the bottom of the steel wire rope set is detachably connected with the top of the operation platform. The rail system is arranged at the top of the main body steel structure, the driving system is slidably connected with the rail system, the driving system can transversely move the truss, the driving system comprises a driving assembly, a rotating shaft and a pulley assembly, and the driving assembly is arranged in the middle of the rotating shaft and fixed to the rotating shaft; two ends of the rotating shaft are rotatably connected with the side wall of the pulley assembly; the bottom of the pulley assembly is slidably connected with the track system; the multiple supports are evenly arranged on the periphery of the rotating shaft at intervals, the tops of the supports are fixed to the truss, and the operating platform can be moved through the driving system, so that the operating platform can move without being detached, and operation of different construction parts is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of cornice operating platforms, in particular to a cantilever cornice operating platform. Background Art

[0002] Building cantilevered eaves are a common architectural design trend. They can bring more design sense and beauty to the building, while also increasing the lighting and ventilation effects of the building.

[0003] The Chinese invention patent with publication number CN115288406A, published on November 4, 2022, discloses an operating platform for metal roof cornices. In the case of metal roof cornice panel construction under special circumstances where steel pipe scaffolding, aerial vehicles and other working platforms cannot be used, an external frame is erected on the outside of the cornice keel, and a stepped support frame is supported by an oblique pull rod on the inner side of the external frame to lay a platform board for laying panels on the outside of the cornice keel. The operating platform can be disassembled and assembled, the erection method is simple, and it can be used in sections for turnover, with a high reuse rate.

[0004] The above patent solves the problem that the panel installation construction of the cantilevered metal roof eaves is not suitable for the traditional ground-based operating platform, but the operating platform cannot be moved, and the operating platform needs to be disassembled multiple times when carrying out large-span construction. Utility Model Content

[0005] In view of the above problems, the utility model provides a cantilevered cornice operating platform, which can use a driving system to move the operating platform so that the operating platform can be shifted without being dismantled to complete operations at different construction locations.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cantilevered cornice operating platform comprises a truss, a wire rope group, an operating platform, a driving system and a track system. The top of the wire rope group is detachably connected to the bottom of the truss, and the bottom of the wire rope group is detachably connected to the top of the operating platform. The track system is arranged on the top of the main steel structure, and the driving system is slidably connected to the track system. The driving system can move the truss laterally.

[0008] Furthermore, the driving system includes a driving assembly, a rotating shaft and a pulley assembly. The driving assembly is arranged in the middle of the rotating shaft and is fixed to the rotating shaft; both ends of the rotating shaft are rotatably connected to the side walls of the pulley assembly, and the bottom of the pulley assembly is slidably connected to the track system; a plurality of brackets are evenly spaced on the periphery of the rotating shaft, and the top of the bracket is fixed to the truss.

[0009] Furthermore, the driving assembly includes a driving wheel, an auxiliary driving wheel and a manual hoist, the auxiliary driving wheel is fixed to the outer periphery of the rotating shaft, and the driving wheel is meshed with the auxiliary driving wheel; the outer wall on one side of the driving wheel is rotatably connected to the bracket, and the outer wall on the other side of the driving wheel is fixed to the manual hoist.

[0010] Furthermore, the pulley assembly includes a skeleton, a main wheel, a mounting groove and a guide wheel. The main wheel is arranged inside the skeleton and rotatably cooperates with the skeleton. The bottom of the main wheel is rollingly connected to the track system, and the middle of the main wheel is fixed to the rotating shaft. The side wall of the skeleton is fixed to the U-shaped mounting groove, and the inner wall of the mounting groove is clearance-matched with the track system. An extension plate is fixed to the side wall of the bottom of the mounting groove, and the top of the extension plate is rotatably connected to the guide wheel, and the side wall of the guide wheel is rollingly connected to the track system.

[0011] Furthermore, the pulley assembly also includes a connecting piece and an anti-tipping wheel. The V-shaped connecting piece is fixed to the side wall of the frame, the anti-tipping wheel is rotatably connected to the inner wall of the bottom of the connecting piece, and the top of the anti-tipping wheel is rollingly connected to the track system; the rolling direction of the guide wheel is perpendicular to that of the anti-tipping wheel.

[0012] Furthermore, it also includes a brake assembly, which is adjacent to the pulley assembly. The brake assembly includes a connecting frame, a rail clamp and a brake line. The top of the connecting frame is fixed to the truss, the bottom of the connecting frame is fixed to the top of the rail clamp, the rail clamp is slidably connected to the track system, one end of the brake line 53 is connected to the rail clamp 52, and the other end of the brake line 53 is connected to the handbrake control panel, and the brake line is used to adjust the force with which the rail clamp clamps the track system.

[0013] Furthermore, the rail clamp includes a positioning frame, a scissors frame, a clamping member and a first spring. A strip hole is provided on the top of the positioning frame, and the bottom of the positioning frame is slidably connected to the bottom of the track system. The top of the scissors frame passes through the strip hole and extends to the outside of the positioning frame, the bottom of the scissors frame is fixed to the top of the clamping member, the middle of the scissors frame is rotatably connected to the bottom side wall of the connecting plate, and the top of the connecting plate is fixed to the top of the inner cavity of the positioning frame; one end of the first spring is fixed to the outer wall of the clamping member, and the other end of the first spring is fixed to the inner wall of the positioning frame; one end of the brake line passes through the scissors frame and the connecting frame at one end in turn and is fixed to the scissors frame at the other end, and a second spring is fixed to the outer periphery of the brake line between the two ends of the connecting frame; when the operating platform is moved, the inner wall of the clamping member is clearance-matched with the track system, and when the operating platform is fixed, the inner wall of the clamping member is tightly in contact with the track system.

[0014] Furthermore, the track system includes a steel track and a U-shaped screw. The steel track is arranged on the top of the main steel structure. A fixing plate is fixed to the side wall of the steel track. The U-shaped screw is arranged on the main steel structure and the outer periphery of the steel track. The top of the U-shaped screw is fixed to the fixing plate, and a wooden square is fixed between the bottom of the U-shaped screw and the main steel structure.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model can use a driving system to move the operating platform, so that the operating platform can be shifted without being dismantled to complete operations at different construction sites.

[0017] 2. The steel track of the utility model is an I-beam, which is used as the track, and U-shaped screws are used in conjunction with fixing plates to fix both ends of the steel track. Through this structure, the track on which the pulley assembly runs will not damage the main steel structure, and the track system has stronger anti-overturning and anti-displacement capabilities.

[0018] 3. The utility model uses a main wheel, a guide wheel and an anti-tipping wheel to form a pulley assembly, which improves the overall load resistance of the lifting device and has high safety performance.

[0019] 4. The utility model is provided with a brake assembly beside each pulley assembly. A handbrake control panel is used in the brake assembly to cooperate with a brake line to control the rail clamp, which is easy to operate and has high safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a side view of the utility model;

[0022] Figure 3 It is the front view of the utility model;

[0023] Figure 4 It is a structural diagram of the drive system;

[0024] Figure 5 It is the main view of the drive system;

[0025] Figure 6 It is a schematic diagram of the connection structure between the pulley assembly and the track system;

[0026] Figure 7 A side view of the connection between the pulley assembly and the track system;

[0027] Figure 8 It is the front view of the connection between the pulley assembly and the track system;

[0028] Fig. 9 is a schematic diagram of the structure of the brake assembly;

[0029] Fig.10 is a front view of the brake assembly;

[0030] Fig.11 This is a schematic diagram of the structure of the wire rope group before rope replacement;

[0031] Fig.12 It is a structural schematic diagram of the steel wire rope group when the first steel wire rope 21 is removed;

[0032] Fig.13 It is a schematic diagram of the structure of the steel wire rope group when the second steel wire rope is removed;

[0033] Fig.14 It is a structural schematic diagram of the steel wire rope group after the rope is replaced;

[0034] Fig.15 It is a schematic diagram of the installation state of the utility model.

[0035] The accompanying drawings are marked as:

[0036] 1. Truss; 2. Wire rope group; 21. First wire rope 21; 22. Second wire rope; 23. Third wire rope; 3. Operating platform; 4. Driving system; 41. Driving assembly; 411. Driving wheel; 412. Auxiliary driving wheel; 413. Manual hoist; 42. Bracket; 43. Rotating shaft; 44. Pulley assembly; 441. Connecting plate; 442. Frame; 443. Main wheel; 444. Mounting groove; 445. Guide wheel; 446. Connector; 447. Anti-tipping wheel; 51. Connecting frame; 52. Rail clamp; 521. Positioning frame; 522. Scissor frame; 523. Clamp; 524. First spring; 525. Connecting plate; 53. Brake line; 531. Second spring; 6. Track system; 61. Steel track; 62. U-shaped screw; 63. Wooden square; 64. Fixing plate; 7. Main steel structure. DETAILED DESCRIPTION

[0037] The utility model is suitable for buildings of relatively large sizes. In the project of the embodiment, the background cantilever is 9-12.8 meters and the drop difference is 3.6 meters.

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] like Figure 1-Figure 10 As shown, the cantilevered eaves operating platform of this embodiment includes a truss 1, a wire rope group 2, an operating platform 3, a drive system 4 and a track system 6. The top of the wire rope group 2 is detachably connected to the bottom of the truss 1, and the bottom of the wire rope group 2 is detachably connected to the top of the operating platform 3. The track system 6 is arranged on the top of the main steel structure 7, and the drive system 4 is slidably connected to the track system 6. The drive system 4 can move the truss 1 laterally.

[0040] The utility model can use the driving system 4 to move the operating platform 3, so that the operating platform 3 can be shifted without being dismantled to complete the work at different construction sites. The operating platform 3 is surrounded by 40*40*4 square tubes with an extension of 1.2 meters, and a horizontal net is set; a dense mesh net is tied at the railing to prevent objects from falling during construction. The steel wire rope group 2 is covered with PVC fire-retardant corrugated pipes, which can effectively protect the load-bearing steel wire rope from being hit and prevent burns from electric welding sparks.

[0041] In the main steel structure 7, the main beam, secondary beam and support are fixed by manual welding. E43 type welding rod is used for welding. After welding, the weld is rusted and painted with epoxy zinc-rich primer and micaceous iron intermediate paint. The entire operating platform needs to be fixed when it is in a static state such as fixed-point operation and not in use to prevent the entire operating platform from moving due to external forces; and the anti-sway device is installed in place in the above state.

[0042] When the wind speed is greater than Level 5, stop construction work, clear objects, and ensure that the anti-sway device and braking device are in a controlled state; when the wind speed is greater than Level 6 or in typhoon weather, the close-mesh safety vertical net and horizontal safety net of the guardrail must be removed, and some patterned steel plates must be dismantled to reduce the wind load on the sliding operating platform; ensure that the anti-sway device and braking device are in a controlled state; and add rigid counter-support.

[0043] Furthermore, the driving system 4 includes a driving component 41, a rotating shaft 43 and a pulley component 44. The driving component 41 is arranged in the middle of the rotating shaft 43 and is fixed to the rotating shaft 43; both ends of the rotating shaft 43 are rotatably connected to the side walls of the pulley component 44, and the bottom of the pulley component 44 is slidably connected to the track system 6; a plurality of brackets 42 are evenly spaced on the periphery of the rotating shaft 43, and the top of the bracket 42 is fixed to the truss 1.

[0044] When the driving system 4 is used, the driving assembly 41 provides power to the rotating shaft 43 to drive the rotating shaft 43 to rotate, and the rotating shaft 43 drives the pulley assembly 44 to rotate; the rotating shaft 43 and the truss 1 are connected by the bracket 42, and when the pulley assembly 44 rotates on the surface of the track system 6, the rotating shaft 43 drives the truss 1 to move through the bracket 42.

[0045] Furthermore, the driving assembly 41 includes a driving wheel 411, an auxiliary wheel 412 and a manual hoist 413. The auxiliary wheel 412 is fixed to the outer periphery of the rotating shaft 43, and the driving wheel 411 is meshed with the auxiliary wheel 412; the outer wall on one side of the driving wheel 411 is rotatably connected to the bracket 42, and the outer wall on the other side of the driving wheel 411 is fixed to the manual hoist 413.

[0046] When the driving assembly 41 is used, the manual hoist 413 is started to drive the driving wheel 411 to rotate, the driving wheel 411 drives the secondary driving wheel 412 to rotate, the secondary driving wheel 412 drives the rotating shaft 43 to rotate, and the rotating shaft 43 provides power for the pulley assembly 44 when rotating.

[0047] Compared with conventional motors, the manual hoist 413 is driven at a slower speed. When the truss 1 is moved, the main steel structure 7 will block the wire rope group 2. Therefore, the wire ropes in the wire rope group 2 need to be replaced one by one. Because the construction workers may not remove the wire ropes in advance for some reason, the wire ropes may collide with the main steel structure 7. At this time, if a motor is used, the driving force is large, which is more dangerous when a collision occurs. The manual hoist 413 has a smaller driving force. If a collision occurs, the impact caused by the motor is relatively small.

[0048] Furthermore, the pulley assembly 44 includes a skeleton 442, a main wheel 443, a mounting groove 444 and a guide wheel 445. The main wheel 443 is arranged inside the skeleton 442 and rotatably cooperates with the skeleton 442. The bottom of the main wheel 443 is rollingly connected to the track system 6, and the middle of the main wheel 443 is fixed to the rotating shaft 43; the side wall of the skeleton 442 is fixed to the U-shaped mounting groove 444, and the inner wall of the mounting groove 444 is clearance-matched with the track system 6. An extension plate is fixed to the bottom side wall of the mounting groove 444, and the top of the extension plate is rotatably connected to the guide wheel 445, and the side wall of the guide wheel 445 is rollingly connected to the track system 6.

[0049] The track on which the pulley assembly 44 moves is an I-beam. The main wheel 443 is arranged inside the frame 442, and the main wheel 443 is fixed to the rotating shaft 43. When the manual hoist 413 is started, the manual hoist 413 drives the secondary driven wheel 412 to rotate through the driving wheel 411, and the secondary driven wheel 412 drives the main wheel 443 to rotate through the rotating shaft 43, so that the main wheel 443 rotates and displaces on the surface of the track system 6; by adding mounting grooves 444 and guide wheels 445 on both sides of the frame 442, the outside of the frame 442 can roll with the top of the I-beam through the mounting grooves 444 and the guide wheels 445 to prevent the pulley assembly 44 from leaving the track. The frame 442 is fixed to the truss 1 through the reinforcing plate 441.

[0050] Furthermore, the pulley assembly 44 also includes a connecting member 446 and an anti-tipping wheel 447. The V-shaped connecting member 446 is fixed to the side wall of the frame 442, the anti-tipping wheel 447 is rotatably connected to the inner wall at the bottom of the connecting member 446, and the top of the anti-tipping wheel 447 is rollingly connected to the track system 6; the guide wheel 445 is perpendicular to the rolling direction of the anti-tipping wheel 447.

[0051] The side wall of the skeleton 442 perpendicular to the guide wheel 445 is fixed with a connector 446 and an anti-tipping wheel 447. The top of the anti-tipping wheel 447 is connected to the bottom of the upper wall of the I-beam by rolling. Through this structure, the stability of the connection between the pulley assembly 44 and the track system 6 is further strengthened to prevent the pulley assembly 44 from derailing. The two anti-tipping wheels 447 and the four guide wheels 445 can play the main and auxiliary roles of guidance and anti-tipping. Each pulley fits tightly with the I-beam, and a gap of 10-20 mm is maintained between the pulley assembly 44 and the main steel structure 7. During the construction process, it is necessary to observe at any time whether the control gap is reduced and whether the screws are loose. If this phenomenon occurs, all operators should evacuate the operating platform 3 and take emergency disposal and maintenance measures.

[0052] Furthermore, it also includes a brake assembly, which is adjacent to the pulley assembly 44. The brake assembly includes a connecting frame 51, a rail clamp 52 and a brake line 53. The top of the connecting frame 51 is fixed to the truss 1, and the bottom of the connecting frame 51 is fixed to the top of the rail clamp 52. The rail clamp 52 is slidably connected to the track system 6. One end of the brake line 53 is connected to the rail clamp 52, and the other end of the brake line 53 is connected to the handbrake control panel. The brake line 53 is used to adjust the force with which the rail clamp 52 clamps the track system 6.

[0053] The driving system 4 provides the truss 1 with the power to move, but the driving system 4 itself does not have a structure to stop the movement of the truss 1. A brake assembly is provided next to each pulley assembly 44 to stop the movement of the truss 1 according to the use requirements. The rail clamp 52 is used to apply resistance to the track system 6. When the truss 1 needs to be stopped, the handbrake control panel is used to pull the brake line 53, so that the brake line 53 drives the rail clamp 52 to tightly clamp the track system 6, so as to increase the resistance between the rail clamp 52 and the track system 6 and prevent the truss 1 from continuing to move.

[0054] Furthermore, the rail clamp 52 includes a positioning frame 521, a scissor frame 522, a clamping member 523 and a first spring 524. A strip hole is opened at the top of the positioning frame 521. The bottom of the positioning frame 521 is slidably connected to the bottom of the rail system 6. The top of the scissor frame 522 passes through the strip hole and extends outside the positioning frame 521. The bottom of the scissor frame 522 is fixed to the top of the clamping member 523. The middle of the scissor frame 522 is rotatably connected to the bottom side wall of the connecting plate 525. The top of the connecting plate 525 is fixed to the top of the inner cavity of the positioning frame 521. One end of the first spring 524 is fixed to the outer wall of the clamping member 523, and the other end of the first spring 524 is fixed to the inner wall of the positioning frame 521; one end of the brake line 53 passes through the scissors frame 522 at one end and the connecting frame 51 in sequence and is fixed to the scissors frame 522 at the other end, and a second spring 531 is fixed to the outer periphery of the brake line 53 between the two ends of the connecting frame 51; when the operating platform 3 is moved, the inner wall of the clamping member 523 and the track system 6 are clearance-matched, and when the operating platform 3 is fixed, the inner wall of the clamping member 523 and the track system 6 are tightly abutted.

[0055] The positioning frame 521 is arranged on the periphery of the I-beam, and the bottom of the positioning frame 521 is in a gap with the outer wall of the bottom of the I-beam. When the truss 1 moves, the first spring 524 and the second spring 531 are not subjected to force, and the clamping member 523 is in a gap with the outer wall of the top of the I-beam; when the truss 1 is prevented from moving, the top of the scissors frame 522 is pulled together through the brake line 53, and the bottom of the scissors frame 522 simultaneously drives the two clamping members 523 to move together to increase the resistance of the clamping member 523 to the I-beam. At this time, the first spring 524 is stretched and the second spring 531 is contracted; after the braking of the truss 1 is completed, the brake line 53 is released through the handbrake control panel, and the first spring 524 and the second spring 531 are restored while driving the clamping member 523 to move away from the I-beam.

[0056] Furthermore, the track system 6 includes a steel track 61 and a U-shaped screw 62. The steel track 61 is arranged on the top of the main steel structure 7. A fixing plate 64 is fixed to the side wall of the steel track 61. The U-shaped screw 62 is arranged on the main steel structure 7 and the outer periphery of the steel track 61. The top of the U-shaped screw 62 is fixed to the fixing plate 64. A wooden square 63 is fixed between the bottom of the U-shaped screw 62 and the main steel structure 7.

[0057] The steel rail 61 is an I-beam, which is used as a rail, and a U-shaped screw 62 is used to cooperate with a fixing plate 64 to fix the two ends of the steel rail 61. Through this structure, the rail on which the pulley assembly 44 runs will not damage the main steel structure 7, and the rail system 6 has stronger anti-overturning and anti-displacement capabilities. The steel rail 61 is laid on one side through the entire length, and a set of fixing plates 64 and U-shaped screws 62 are arranged every three meters at the fixed node. The parallel distance of the steel rail 61 is 5.31 meters.

[0058] The method for using the cantilevered cornice operating platform of this embodiment comprises the following steps:

[0059] Install the track system 6;

[0060] After the main steel structure 7 is installed and accepted, the flatness of the main steel structure 7 is measured and marked, and then the steel rail 61 with a model of 160b#H is installed on the main steel structure 7 and leveled and fixed.

[0061] Lifting truss 1;

[0062] The assembled truss 1 (sliding steel support) is hoisted into the steel track 61 by a fifty-ton truck crane.

[0063] Install the drive system 4;

[0064] After the truss 1 is hoisted into place, the pulley assembly 44 and the brake assembly are installed.

[0065] Test run truss 1;

[0066] After the above steps are installed, the brake assembly is opened, and the traction device is used to conduct a full track reciprocating test run of the truss 1 to ensure that the truss 1 moves smoothly.

[0067] Install operating platform 3;

[0068] The operating platform 3 is lifted synchronously by two 50-ton truck cranes. When lifting, three trial lifts are carried out first. After inspection and confirmation that the lifting requirements are met, the lifting is carried out synchronously, and the operating platform 3 is lifted at a certain angle to the ground. When the operating platform 3 is lifted to the predetermined position below the eaves, the inner hook is slowly lifted upwards and the outer hook is slowly lowered to adjust the operating platform 3 to a horizontal state. At this time, the surveyor stands in the corresponding room and uses a level to measure the height of the operating platform 3. Under the command of the commander, the two truck cranes gradually adjust the operating platform 3 to the designed height and keep it horizontal and still. After it is still, the wire rope group 2 is installed. After the installation of the wire rope group 2 is completed, the two truck cranes slowly lower the hooks to subject the wire rope group 2 to force, check the tightness of the wire rope group 2 at each corner, and after adjusting the platform level and the average force of the wire rope group 2 at each corner, the truck crane unhooks to complete the installation of the operating platform 3.

[0069] Mobile operating platform 3;

[0070] Start the manual hoist 413;

[0071] The manual hoist 413 drives the auxiliary driving wheel 412 to rotate through the driving wheel 411;

[0072] The secondary driving wheel 412 drives the main wheel 443 to rotate via the rotating shaft 43 .

[0073] When the main wheel 443 rotates on the surface of the steel track 61 , the rotating shaft 43 drives the truss 1 to move through the bracket 42 .

[0074] See also Figure 11-Figure 14 When the steel wire rope group 2 and the main steel structure 7 are blocked, the different steel wire ropes in the steel wire rope group 2 are replaced in sequence.

[0075] Three steel wire ropes are set at each hanging point, with a rope distance of 600 mm;

[0076] Changing the rope involves the following steps:

[0077] Step 1: When the first steel wire rope 21 is about to hit the main steel structure 7 during the movement, the first steel wire rope 21 is removed to make the second steel wire rope 22 bear the force;

[0078] Step 2: Continue to move the truss 1 so that the first steel wire rope 21 crosses the main steel structure 7;

[0079] Step 3: re-hang the first steel wire rope 21 and remove the second steel wire rope 22;

[0080] Step 4: Move the truss 1 again, and when the second steel wire rope 22 crosses the main steel structure 7, hang the second steel wire rope 22;

[0081] The third steel wire rope 23 is connected to the auxiliary hoist. Each time the first steel wire rope 21 or the second steel wire rope 22 is replaced, the stress state of the first steel wire rope 21 or the second steel wire rope 22 is adjusted through the third steel wire rope 23 and the auxiliary hoist to prevent the stability of the connection between the truss 1 and the operating platform 3 from deteriorating when the steel wire rope is replaced.

[0082] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cantilever cornice operating platform, comprising a truss (1), a wire rope group (2), an operating platform (3), a drive system (4) and a track system (6), wherein the top of the wire rope group (2) is detachably connected to the bottom of the truss (1), the bottom of the wire rope group (2) is detachably connected to the top of the operating platform (3), the track system (6) is arranged on the top of the main steel structure (7), and the drive system (4) is slidably connected to the track system (6), characterized in that: The driving system (4) can move the truss (1) laterally.

2. The cantilevered cornice operating platform according to claim 1, characterized in that: The driving system (4) comprises a driving component (41), a rotating shaft (43) and a pulley component (44); the driving component (41) is arranged in the middle of the rotating shaft (43) and is fixed to the rotating shaft (43); both ends of the rotating shaft (43) are rotatably connected to the side walls of the pulley component (44), and the bottom of the pulley component (44) is slidably connected to the track system (6); a plurality of brackets (42) are evenly spaced on the outer periphery of the rotating shaft (43), and the top of the bracket (42) is fixed to the truss (1).

3. The cantilevered cornice operating platform according to claim 2, characterized in that: The driving assembly (41) comprises a driving wheel (411), an auxiliary driving wheel (412) and a manual hoist (413); the auxiliary driving wheel (412) is fixed to the outer periphery of the rotating shaft (43); the driving wheel (411) is meshed with the auxiliary driving wheel (412); an outer wall on one side of the driving wheel (411) is rotatably connected to the bracket (42); and an outer wall on the other side of the driving wheel (411) is fixed to the manual hoist (413).

4. The cantilevered cornice operating platform according to claim 2, characterized in that: The pulley assembly (44) includes a skeleton (442), a main wheel (443), a mounting groove (444) and a guide wheel (445); the main wheel (443) is arranged inside the skeleton (442) and is rotatably matched with the skeleton (442); the bottom of the main wheel (443) is rollingly connected to the track system (6); the middle of the main wheel (443) is fixed to the rotating shaft (43); the side wall of the skeleton (442) is fixed to the U-shaped mounting groove (444); the inner wall of the mounting groove (444) is clearance-matched with the track system (6); an extension plate is fixed to the bottom side wall of the mounting groove (444); the top of the extension plate is rotatably connected to the guide wheel (445); the side wall of the guide wheel (445) is rollingly connected to the track system (6).

5. The cantilevered cornice operating platform according to claim 4, characterized in that: The pulley assembly (44) also includes a connecting member (446) and an anti-tipping wheel (447), wherein the V-shaped connecting member (446) is fixed to the side wall of the frame (442), the anti-tipping wheel (447) is rotatably connected to the inner side wall of the bottom of the connecting member (446), and the top of the anti-tipping wheel (447) is rollingly connected to the track system (6); the rolling direction of the guide wheel (445) is perpendicular to that of the anti-tipping wheel (447).

6. The cantilevered cornice operating platform according to claim 2, characterized in that: The invention also includes a brake assembly, which is adjacent to the pulley assembly (44). The brake assembly includes a connecting frame (51), a rail clamp (52) and a brake line (53). The top of the connecting frame (51) is fixed to the truss (1), the bottom of the connecting frame (51) is fixed to the top of the rail clamp (52), the rail clamp (52) is slidably connected to the track system (6), one end of the brake line (53) is connected to the rail clamp (52), and the other end of the brake line (53) is connected to the handbrake control panel. The brake line (53) is used to adjust the clamping force of the rail clamp (52) on the track system (6).

7. The cantilevered cornice operating platform according to claim 6, characterized in that: The rail clamp (52) comprises a positioning frame (521), a scissor frame (522), a clamping member (523) and a first spring (524); a strip hole is provided on the top of the positioning frame (521); the bottom of the positioning frame (521) is slidably connected to the bottom of the rail system (6); the top of the scissor frame (522) passes through the strip hole and extends outside the positioning frame (521); the bottom of the scissor frame (522) is fixed to the top of the clamping member (523); the middle of the scissor frame (522) is rotatably connected to the bottom side wall of the connecting plate (525); the top of the connecting plate (525) is fixed to the top of the inner cavity of the positioning frame (521); One end of the spring (524) is fixed to the outer wall of the clamping member (523), and the other end of the first spring (524) is fixed to the inner wall of the positioning frame (521); one end of the brake line (53) passes through the scissors frame (522) at one end and the connecting frame (51) in sequence and is then fixed to the scissors frame (522) at the other end, and a second spring (531) is fixed to the outer periphery of the brake line (53) between the two ends of the connecting frame (51); when the operating platform (3) is moved, the inner wall of the clamping member (523) is loosely matched with the track system (6), and when the operating platform (3) is fixed, the inner wall of the clamping member (523) is tightly abutted against the track system (6).

8. The cantilevered cornice operating platform according to claim 1, characterized in that: The track system (6) comprises a profiled steel track (61) and a U-shaped screw (62); the profiled steel track (61) is arranged on the top of the main steel structure (7); a fixing plate (64) is fixed to the side wall of the profiled steel track (61); the U-shaped screw (62) is arranged on the main steel structure (7) and the outer periphery of the profiled steel track (61); the top of the U-shaped screw (62) is fixed to the fixing plate (64); and a wooden block (63) is fixed between the bottom of the U-shaped screw (62) and the main steel structure (7).

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