Combined flag raising platform

Abstract

The application provides a combined flag raising platform, which comprises a counterweight base and a flagpole assembled on the counterweight base, the counterweight base is combined by an inner counterweight base, a front counterweight base and two outer counterweight bases, and the inner counterweight base, the front counterweight base and the two outer counterweight bases are all prefabricated by reinforced concrete; wherein one side of the two outer counterweight bases and the inner counterweight base is stepped and is provided with a plurality of step plates; and the side of the two outer counterweight bases away from each other is provided with a side decorative plate. The combined flag raising platform has the advantages that it is convenient to combine, assemble and fix, and the on-site pouring is not needed, so that the construction period of the construction site is reduced, the flag is convenient to raise and lock, and the use is convenient.

Description

Technical Field

[0001] This invention relates to the field of flag-raising platform technology, and more particularly to a combined flag-raising platform. Background Technology

[0002] A flagpole is a place used for flag-raising ceremonies. A flagpole is usually erected on the flagpole, from which the national flag or other relevant flags fly. Some economic industrial parks or companies also have flagpole facilities.

[0003] However, traditionally, flag-raising platforms are usually constructed directly on-site using reinforced concrete. The site of the flag-raising platform needs to be fenced off for a considerable period of time, resulting in a relatively long construction period. Furthermore, once the flag-raising platform is completed, it cannot be dismantled.

[0004] Therefore, it is necessary to provide a new modular flagpole to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the technical problems of flag-raising platforms being typically cast in concrete, having long construction periods, and being neither combinable nor disassembleable, this invention provides a modular flag-raising platform.

[0006] The modular flagpole provided by this invention includes a counterweight base and a flagpole mounted on the counterweight base. The counterweight base is composed of an inner support seat, a front support seat, and two outer support seats. The inner support seat, the front support seat, and the two outer support seats are all precast reinforced concrete. One side of each of the two outer support seats and the inner support seat is stepped and equipped with multiple steps. Side decorative panels are mounted on the opposite sides of each of the two outer support seats. Logo plates are mounted on one side and the top of the counterweight base for engraving the company name and logo.

[0007] Preferably, the inner load-bearing seat and the two outer load-bearing seats are all provided with a first mounting groove. The first mounting groove is provided with a matching support. The support is provided with a fixing groove and a steel sleeve is fixedly installed. The flagpole is inserted into the steel sleeve.

[0008] Preferably, the inner support and the two outer support are each provided with a second mounting groove. The second mounting groove has a circular groove and a fixed threaded sleeve is fixedly installed therein. Both sides of the support are welded with connecting plates, and the second connecting plates are fixedly installed in the second mounting groove by bolts that are threadedly connected to the fixed threaded sleeve.

[0009] Preferably, several first steel frames are fixedly embedded on both sides of the two outer load-bearing seats. Several connecting holes are provided at the bottom of the outer load-bearing seats and extend into the several first steel frames respectively. A concrete base is precast on the ground for placing the counterweight base. Several precast bolt rods are precast on the concrete base. The precast bolt rods pass through the connecting holes and extend into the first steel frames. Nuts are threaded on the precast bolt rods. The outer load-bearing seats are positioned and fixed on the concrete base by the nuts, the precast bolt rods and the first steel frames.

[0010] Preferably, two second steel frames are embedded on both sides of the front bearing seat, and two third steel frames are embedded on the side of the two outer bearing seats that are far apart from each other. Bolt rods extending into the third steel frames are provided in the second steel frames and nuts are threaded on them, so that the front bearing seat and the two outer bearing seats are fixed respectively.

[0011] Preferably, the front support seat has two third mounting slots on the side near the inner support seat, and each of the two third mounting slots is fitted with a fixing plate. Reinforcing bars, cast integrally with the front support seat, are welded onto the two fixing plates. The fixing plates are equipped with a fixing mechanism for fixing the front support seat and the inner support seat. The fixing mechanism includes a mounting plate, a connecting column, a locking block, a fourth steel frame, a stop block, a sliding rod, a fixing block, a spring, and a limiting plate. The mounting plate is fixedly mounted on the fixing plate. The connecting column is welded to one side of the mounting plate, the locking block is welded to one end of the connecting column, the fourth steel frame is fitted onto the inner support seat, and the stop block slides. On the inner wall of the fourth steel frame, the sliding rod is fixedly installed on the top of the stop block, the fixing block is fixedly installed on the inner wall of the fourth steel frame, the sliding rod is slidably connected to the fixing block, the spring is slidably sleeved on the sliding rod, the limiting plate is fixedly installed on the top of the sliding rod, the top of the limiting plate is fixedly installed with a fixing ring, and a pull rope is fixedly installed on the fixing ring. The top of the inner load-bearing seat is fixedly embedded with a steel channel seat, the steel channel seat is connected to the fourth steel frame through a plastic tube, the pull rope extends through the plastic tube into the fourth steel frame, and the top of the pull rope is fixedly connected with a pull ring for disassembling the inner load-bearing seat and the front load-bearing seat.

[0012] Preferably, the inner support and the two outer support are each provided with a plurality of fifth mounting slots and a connecting mechanism. The connecting mechanism includes two rectangular steel boxes fixedly embedded in the corresponding two fifth mounting slots. The two rectangular steel boxes on the inner support and the two outer support are provided with the same rotating threaded sleeve. Both ends of the rotating threaded sleeve are threaded with threaded rods. The threads of the two threaded rods are in opposite directions. The ends of the two threaded rods that are far apart from each other are welded with square seats. The two square seats are slidably connected to the inner walls of the two rectangular steel boxes.

[0013] Preferably, the flagpole is provided with a lifting mechanism for raising and lowering the flag. The lifting mechanism includes a windward ball head, a steel wire rope, mounting components, a sleeve, a limiting ring, two central tubes, two drums, and a drive mechanism for rotating the drums. The windward ball head is rotatably mounted on the top of the flagpole, and a fixed pulley is fixedly installed inside the windward ball head. The steel wire rope passes through the flagpole, passes around the fixed pulley, and extends to the outside of the windward ball head. Both mounting components are fixedly sleeved on the steel wire rope. The two ends of the sleeve are threaded onto the two mounting components respectively. The sleeve is used to sleeve the flag. The limiting ring is fixed to the mounting component below and slidably sleeved on the flagpole. The two central tubes are rotatably mounted on bearing seats on the inner walls of both sides of the flagpole. The two drums are fixedly mounted on one end of the two central tubes respectively. The two ends of the steel wire rope are fixedly wound around the two drums respectively. The drive mechanism is mounted on the drums.

[0014] Preferably, the drive mechanism includes a rotating rod, a gear, and a throttle. Both of the two drums are provided with toothed grooves, and one of the drums is provided with a through hole communicating with the toothed grooves. The diameter of the through hole is larger than the maximum diameter of the toothed grooves. The rotating rod passes through the corresponding bearing seat and the central shaft tube and extends into the toothed grooves. The gear is located at one end of the rotating rod and is located in the two toothed grooves. The gear meshes with the two toothed grooves and can move horizontally within the two toothed grooves.

[0015] Preferably, the flagpole has an installation opening and a maintenance cover is fixedly installed thereon, and the maintenance cover corresponds to the installation position of the two rollers.

[0016] Compared with related technologies, the combined flag-raising platform provided by the present invention has the following beneficial effects:

[0017] This invention provides a combined flag-raising platform:

[0018] The flag can be assembled and fixed by pre-casting the front support, inner support, and two outer support, without the need for on-site casting, thus reducing the construction period on site. It can also be equipped with logo plates, step plates, and side decorative plates. The flag can be raised, lowered, and locked in place by the lifting mechanism, making it convenient to use. Attached Figure Description

[0019] Figure 1 A side view of a preferred embodiment of the combined flag-raising platform provided by the present invention;

[0020] Figure 2 This is a side sectional view of the present invention.

[0021] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown below;

[0022] Figure 4 for Figure 2 The enlarged schematic diagram of part B shown below;

[0023] Figure 5 for Figure 2 The enlarged schematic diagram of part C shown below;

[0024] Figure 6 This is a side sectional view of the lifting mechanism in this invention.

[0025] Figure 7 This is a front view schematic diagram of the roll structure in this invention;

[0026] Figure 8 This is a side sectional view of the external load-bearing seat in this invention.

[0027] Figure 9 This is a three-dimensional structural diagram of the logo plate in this invention;

[0028] Figure 10 This is a three-dimensional structural diagram of the front bearing seat in this invention;

[0029] Figure 11 This is a side view assembly diagram of the front support seat and the outer support seat in this invention;

[0030] Figure 12 This is a side sectional view of the assembly of the front support and the outer support in this invention.

[0031] Figure 13 This is a side sectional view of the assembly of the front support and the inner support in this invention.

[0032] Figure 14 for Figure 13 The diagram shown is an enlarged view of part D.

[0033] Figure 15 for Figure 13 The enlarged schematic diagram of part E shown;

[0034] Figure 16 This is a top view of the assembly of the outer and inner load-bearing seats with the support and steel sleeve in this invention.

[0035] Figure 17 This is a front view assembly diagram of the outer / inner bearing seat and the threaded sleeve in this invention;

[0036] Figure 18 This is a front view assembly diagram of the outer load-bearing seat and the inner load-bearing seat in this invention;

[0037] Figure 19 for Figure 18 The diagram shown is an enlarged view of part F.

[0038] Figure 20 This is a front sectional view of the connecting mechanism in this invention;

[0039] Figure 21 This is a three-dimensional structural diagram of the rectangular steel box in this invention.

[0040] Numbered in the diagram: 1. External load-bearing seat; 2. Internal load-bearing seat; 3. Front load-bearing seat; 4. Logo plate; 5. Step plate; 6. Side decorative panel; 7. Support; 8. Steel sleeve; 9. Fixed threaded sleeve; 10. Connecting plate; 11. First steel frame; 12. Second steel frame; 13. Third steel frame; 14. Fixing plate; 15. Mounting plate; 16. Connecting column; 17. Clamping block; 18. Fourth steel frame; 19. Stop block; 20. 21. Slide rod; 22. Fixing block; 23. Spring; 24. Limiting plate; 25. Pull rope; 26. Steel channel seat; 27. Rectangular steel box; 28. Rotating threaded sleeve; 29. ​​Threaded rod; 30. Square seat; 31. Flagpole; 32. Windward ball head; 33. Steel wire rope; 34. Mounting component; 35. Sleeve rod; 36. Limiting ring; 37. Central shaft tube; 38. Drum; 39. Rotating rod; 40. Gear; 51. Throttle. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0042] Please refer to the following: Figure 1-21 ,in, Figure 1 A side view of a preferred embodiment of the combined flag-raising platform provided by the present invention; Figure 2 This is a side sectional view of the present invention. Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown below; Figure 4 for Figure 2 The enlarged schematic diagram of part B shown below; Figure 5 for Figure 2 The enlarged schematic diagram of part C shown below; Figure 6 This is a side sectional view of the lifting mechanism in this invention. Figure 7 This is a front view schematic diagram of the roll structure in this invention; Figure 8 This is a side sectional view of the external load-bearing seat in this invention. Figure 9 This is a three-dimensional structural diagram of the logo plate in this invention; Figure 10 This is a three-dimensional structural diagram of the front bearing seat in this invention; Figure 11 This is a side view assembly diagram of the front support seat and the outer support seat in this invention; Figure 12 This is a side sectional view of the assembly of the front support and the outer support in this invention. Figure 13 This is a side sectional view of the assembly of the front support and the inner support in this invention. Figure 14 for Figure 13 The diagram shown is an enlarged view of part D. Figure 15 for Figure 13 The enlarged schematic diagram of part E shown; Figure 16 This is a top view of the assembly of the outer and inner load-bearing seats with the support and steel sleeve in this invention. Figure 17 This is a front view assembly diagram of the outer / inner bearing seat and the threaded sleeve in this invention; Figure 18 This is a front view assembly diagram of the outer load-bearing seat and the inner load-bearing seat in this invention; Figure 19 for Figure 18 The diagram shown is an enlarged view of part F. Figure 20 This is a front sectional view of the connecting mechanism in this invention; Figure 21 This is a three-dimensional structural diagram of the rectangular steel box in this invention.

[0043] The modular flagpole includes a counterweight base and a flagpole 30 mounted on the counterweight base. The counterweight base is composed of an inner support seat 2, a front support seat 3, and two outer support seats 1. The inner support seat 2, the front support seat 3, and the two outer support seats 1 are all precast reinforced concrete. One side of the two outer support seats 1 and the inner support seat 2 is stepped and equipped with multiple step plates 5. The two outer support seats 1 are each equipped with a side decorative panel 6 on the side away from each other. The counterweight base is equipped with a logo plate 4 on one side and the top for engraving the company name and logo.

[0044] The inner load-bearing seat 2 and the two outer load-bearing seats 1 are all reserved with a first mounting groove. The first mounting groove is provided with a matching support 7. The support 7 is provided with a fixing groove and a steel sleeve 8 is fixedly installed. The flagpole 30 is inserted into the steel sleeve 8. The flagpole 30 can be directly installed directly through the steel sleeve 8 and the support 7.

[0045] The inner support 2 and the two outer support 1 are each provided with a second mounting groove. A circular groove is opened in the second mounting groove and a fixed threaded sleeve 9 is fixedly installed therein. A connecting plate 10 is welded to both sides of the support 7. The second connecting plate 10 is fixedly installed in the second mounting groove by a bolt rod that is threadedly connected to the fixed threaded sleeve 9. The support 7 is conveniently installed by the fixed threaded sleeve 9 and the connecting plate 10 under the fastening of the bolt rod.

[0046] Both sides of the two outer load-bearing seats 1 are fixedly embedded with several first steel frames 11. The bottom of the outer load-bearing seat 1 is provided with several connecting holes that extend into several first steel frames 11 respectively. The ground for placing the counterweight base is precast with a concrete base. Several precast bolt rods are precast on the concrete base. The precast bolt rods pass through the connecting holes and extend into the first steel frames 11. Nuts are threaded on the precast bolt rods. The outer load-bearing seat 1 is positioned and fixed on the concrete base by the nuts, the precast bolt rods and the first steel frames 11. The nuts in the first steel frames 11 are connected to the precast bolt rods on the concrete base where the outer load-bearing seat 1 is placed, so as to facilitate the positioning and fixing of the outer load-bearing seat 1 on the concrete base.

[0047] Two second steel frames 12 are embedded on both sides of the front support 3, and two third steel frames 13 are embedded on the side of the two outer support 1 that are far apart from each other. The second steel frame 12 is provided with bolt rods extending into the third steel frame 13 and is threaded with nuts, so that the front support 3 and the two outer support 1 are fixed respectively. The second steel frame 12 and the third steel frame 13 are connected by bolts, which facilitates the connection and fixation between the front support 3 and the two outer support 1.

[0048] The front support seat 3 has two third mounting slots on the side near the inner support seat 2, and each of the two third mounting slots is fitted with a fixing plate 14. Reinforcing bars, cast integrally with the front support seat 3, are welded onto the two fixing plates 14. The fixing plates 14 are equipped with a fixing mechanism for fixing the front support seat 3 and the inner support seat 2. The fixing mechanism includes a mounting plate 15, a connecting column 16, a locking block 17, a fourth steel frame 18, a stop block 19, a sliding rod 20, a fixing block 21, a spring 22, and a limiting plate 23. The mounting plate 15 is fixedly mounted on the fixing plate 14. The connecting column 16 is welded to one side of the mounting plate 15. The locking block 17 is welded to one end of the connecting column 16. The fourth steel frame 18 is fitted into the inner support seat 2, and the stop block 19 slides on the inner wall of the fourth steel frame 18. The slide rod 20 is fixedly installed on the top of the stop block 19, the fixing block 21 is fixedly installed on the inner wall of the fourth steel frame 18, the slide rod 20 is slidably connected to the fixing block 21, the spring 22 is slidably sleeved on the slide rod 20, the limiting plate 23 is fixedly installed on the top of the slide rod 20, the top of the limiting plate 23 is fixedly installed with a fixing ring, and a pull rope 24 is fixedly installed on the fixing ring. The top of the inner load-bearing seat 2 is fixedly embedded with a steel channel seat 25, and the steel channel seat 25 is connected to the fourth steel frame 18 through a plastic tube. The pull rope 24 extends through the plastic tube into the fourth steel frame 18, and a pull ring is fixedly connected to the top of the pull rope 24 for connecting and fixing the front load-bearing seat 3 and the inner load-bearing seat 2 through a fixing mechanism when disassembling the inner load-bearing seat 2 and the front load-bearing seat 3.

[0049] The inner support 2 and the two outer support 1 are each pre-set with several fifth mounting slots and are equipped with a connecting mechanism. The connecting mechanism includes two rectangular steel boxes 26 fixedly embedded in the corresponding two fifth mounting slots. The two rectangular steel boxes 26 on the inner support 2 and the outer support 1 are provided with the same rotating threaded sleeve 27. Both ends of the rotating threaded sleeve 27 are threaded with threaded rods 28. The threads of the two threaded rods 28 are opposite in direction. The ends of the two threaded rods 28 that are far apart from each other are welded with square seats 29. The two square seats 29 are slidably connected to the inner walls of the two rectangular steel boxes 26. The connecting mechanism facilitates the connection and fixation between the inner support 2 and the two outer support 1.

[0050] The flagpole 30 is equipped with a lifting mechanism for raising and lowering the flag. The lifting mechanism includes a windward ball head 31, a steel wire rope 32, mounting components 33, a sleeve 34, a limiting ring 35, two central shaft tubes 36, two drums 37, and a drive mechanism for rotating the drums 37. The windward ball head 31 is rotatably mounted on the top of the flagpole 30. A fixed pulley is fixedly installed inside the windward ball head 31. The steel wire rope 32 passes through the flagpole 30, passes around the fixed pulley, and extends to the outside of the windward ball head 31. Both mounting components 33 are fixedly sleeved on the steel wire rope 32. The sleeve 34 has two... The ends are respectively threaded onto the two mounting parts 33. The sleeve rod 34 is used to hold the flag. The limiting ring 35 is fixed on the mounting part 33 below and is slidably sleeved on the flagpole 30. The two central shaft tubes 36 are respectively rotatably mounted on the bearing seats on the inner walls of both sides of the flagpole 30. The two drums 37 are respectively fixedly mounted on one end of the two central shaft tubes 36. The two ends of the wire rope 32 are respectively fixedly wound on the two drums 37. The drive mechanism is mounted on the drums 37, and the flag can be raised and lowered conveniently through the lifting mechanism.

[0051] The driving mechanism includes a rotating rod 38, a gear 39, and a throttle 40. Both of the two drums 37 have toothed grooves, and one of the drums 37 has a through hole that communicates with the toothed groove. The diameter of the through hole is larger than the maximum diameter of the toothed groove. The rotating rod 38 passes through the corresponding bearing seat and the central shaft tube 36 and extends into the toothed groove. The gear 39 is located at one end of the rotating rod 38 and is located in the two toothed grooves. The gear 39 meshes with the two toothed grooves and can move horizontally within the two toothed grooves. The driving mechanism is used to drive the two drums 37 respectively, so that the flag is raised or lowered, and can lock the two drums 37 in a locked state, thereby locking the flag at the top of the flagpole 30.

[0052] The flagpole 30 has an installation opening and a maintenance cover is fixedly installed thereon. The maintenance cover corresponds to the installation position of the two rollers 37. By opening the maintenance cover, it is convenient to install and maintain the components inside the flagpole 30.

[0053] The working principle of the combined flag-raising platform provided by this invention is as follows:

[0054] During installation, the two external load-bearing seats 1 are first positioned in the designated position on the concrete base using hoisting equipment and other devices. The precast bolt rods on the concrete base are then passed through the connecting holes on the external load-bearing seats 1 and installed on the precast bolt rods with nuts, so that the external load-bearing seats 1 are positioned and fixed on the concrete base.

[0055] Then, the inner bearing seat 2 is placed between the two outer bearing seats 1, and the connecting mechanism is placed in the fifth mounting slots corresponding to the outer bearing seat 1 and the inner bearing seat 2. By rotating the rotating threaded sleeve 27, the two threaded rods 28 are moved away from each other, so that the two square seats 29 are moved away from each other and extend into the rectangular steel box 26, thereby fixing the inner bearing seat 2 and the two outer bearing seats 1 together.

[0056] Then, install three supports 7, and fix the connecting plate 10 in the second mounting groove by threading the bolt rod with the threaded sleeve 9.

[0057] Next, the front support seat 3 is installed, and bolts are installed inside the second steel frame 12 and the third steel frame 13 to fix the front support seat 3 and the two outer support seats 1. During the tightening process of the front support seat 3 approaching the outer support seats 1, the locking block 17 presses against the stop block 19, causing the spring 22 to be compressed until the stop block 19 is as described. Figure 13 As shown, the block 17 is pressed against the front support seat 3, thereby connecting the front support seat 3 and the inner support seat 2.

[0058] Next, install the logo plate 4, the step plate 5, and the side decorative plates 6 on both sides. Then, hoist the three flagpoles 30 into the corresponding steel sleeves 8 to complete the installation.

[0059] In use, by pulling the handle 40 outward, the gear 39 is moved into the tooth groove of the corresponding drum 37, so that the gear 39 is not in contact with the other drum 37. Then, the handle 40 is rotated to make the corresponding drum 37 rotate to wind up the wire rope 32, which causes the mounting part 33 and the sleeve 34 on the wire rope 32 to descend. After descending to the lowest position, the sleeve 34 can be easily removed from the mounting part 33, and after the flag is put on, it can be reinstalled on the two mounting parts 33.

[0060] Finally, by pressing the throttle 40, the gear 39 is moved into the tooth groove of another drum 37. Then, by rotating the throttle 40, the corresponding drum 37 rotates to wind up the wire rope 32, thereby raising the flag on the pole 34 to the top of the flagpole 30 and moving the gear 39 into the tooth groove of the two drums 37. At this time, the two drums 37 will not rotate, so that the flag can be kept at the top of the flagpole 30 without falling.

[0061] Compared with related technologies, the combined flag-raising platform provided by the present invention has the following beneficial effects:

[0062] This invention provides a modular flag-raising platform. The front support 3, inner support 2, and two outer support 1 are pre-cast and can be assembled and fixed without on-site casting, thereby reducing the construction period on the construction site. It is equipped with a logo plate 4, step plate 5, and side decorative plate 6. The flag can be raised and lowered and locked in position through the lifting mechanism, making it convenient to use.

[0063] It should be noted that the device structure and accompanying drawings of this invention mainly describe the principle of this invention. In terms of the technical aspects of this design principle, the configuration of the device's power mechanism, power supply system, and control system is not fully described. However, those skilled in the art who understand the principle of the invention can clearly understand the specifics of its power mechanism, power supply system, and control system.

[0064] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A modular flagpole, comprising a counterweight base and a flagpole mounted on the counterweight base, characterized in that: The counterweight base is composed of an inner bearing seat, a front bearing seat, and two outer bearing seats, all of which are precast reinforced concrete. Both of the outer and inner load-bearing seats have a stepped design on one side, and multiple step plates are installed on them. Both of the two external load-bearing seats are fitted with side decorative panels on the sides that are far apart from each other; The counterweight base is fitted with a logo plate on one side and top for engraving the company name and logo; The front support seat has two third mounting slots on the side near the inner support seat, and each of the two third mounting slots is fitted with a fixing plate. Reinforcing bars, cast integrally with the front support seat, are welded onto the two fixing plates. The fixing plates are equipped with a fixing mechanism for securing the front support seat and the inner support seat. The fixing mechanism includes a mounting plate, a connecting column, a locking block, a fourth steel frame, a stop block, a sliding rod, a fixing block, a spring, and a limiting plate. The mounting plate is fixedly installed on the fixing plate. The connecting column is welded to one side of the mounting plate, and the locking block is welded to one end of the connecting column. The fourth steel frame is embedded in the inner support seat, and the stop block slides within the... On the inner wall of the fourth steel frame, the sliding rod is fixedly installed on the top of the stop block, the fixing block is fixedly installed on the inner wall of the fourth steel frame, the sliding rod is slidably connected to the fixing block, the spring is slidably sleeved on the sliding rod, the limiting plate is fixedly installed on the top of the sliding rod, the top of the limiting plate is fixedly installed with a fixing ring, and a pull rope is fixedly installed on the fixing ring. The top of the inner load-bearing seat is fixedly embedded with a steel channel seat, the steel channel seat is connected to the fourth steel frame through a plastic tube, the pull rope extends through the plastic tube into the fourth steel frame, and the top of the pull rope is fixedly connected with a pull ring for disassembling the inner load-bearing seat and the front load-bearing seat. The inner support and the two outer support are each pre-set with a number of fifth mounting slots and each is provided with a connecting mechanism. The connecting mechanism includes two rectangular steel boxes fixedly embedded in the corresponding two fifth mounting slots. The two rectangular steel boxes on the inner support and the two outer support are provided with the same rotating threaded sleeve. Both ends of the rotating threaded sleeve are threaded with threaded rods. The threads of the two threaded rods are opposite in direction. The ends of the two threaded rods that are far apart from each other are welded with square seats. The two square seats are slidably connected to the inner walls of the two rectangular steel boxes. The flagpole is equipped with a lifting mechanism for raising and lowering the flag. The lifting mechanism includes a windward ball head, a steel wire rope, mounting components, a sleeve, a limiting ring, two central tubes, two drums, and a drive mechanism for rotating the drums. The windward ball head is rotatably mounted on the top of the flagpole. A fixed pulley is fixedly installed inside the windward ball head. The steel wire rope passes through the flagpole, passes around the fixed pulley, and extends to the outside of the windward ball head. Both mounting components are fixedly sleeved on the steel wire rope. The two ends of the sleeve are threaded onto the two mounting components respectively. The sleeve is used to sleeve the flag. The limiting ring is fixed to the mounting component below and slidably sleeved on the flagpole. The two central tubes are rotatably mounted on bearing seats on the inner walls of both sides of the flagpole. The two drums are fixedly mounted on one end of the two central tubes respectively. The two ends of the steel wire rope are fixedly wound around the two drums respectively. The drive mechanism is mounted on the drums. The drive mechanism includes a rotating rod, a gear, and a throttle. Both drums have toothed grooves, and one of the drums has a through hole that communicates with the toothed groove. The diameter of the through hole is larger than the maximum diameter of the toothed groove. The rotating rod passes through the corresponding bearing seat and the central shaft tube and extends into the toothed groove. The gear is located at one end of the rotating rod and is located in the two toothed grooves. The gear meshes with the two toothed grooves and can move horizontally within the two toothed grooves.

2. The combined flag-raising platform according to claim 1, characterized in that, The inner load-bearing seat and the two outer load-bearing seats are all reserved with a first mounting groove. The first mounting groove is provided with a matching support. The support is provided with a fixing groove and a steel sleeve is fixedly installed. The flagpole is inserted into the steel sleeve.

3. The combined flag-raising platform according to claim 2, characterized in that, The inner support and the two outer support are each provided with a second mounting groove. A circular groove is opened in the second mounting groove and a fixed threaded sleeve is fixedly installed therein. Connecting plates are welded to both sides of the support, and the second connecting plates are fixedly installed in the second mounting groove by bolts that are threadedly connected to the fixed threaded sleeve.

4. The combined flag-raising platform according to claim 1, characterized in that, Both sides of the two external load-bearing seats are fixedly fitted with several first steel frames. The bottom of the external load-bearing seats is provided with several connecting holes that extend into several first steel frames. The ground for placing the counterweight base is precast with a concrete base. Several precast bolt rods are precast on the concrete base. The precast bolt rods pass through the connecting holes and extend into the first steel frames. Nuts are threaded on the precast bolt rods. The external load-bearing seats are positioned and fixed on the concrete base by the nuts, the precast bolt rods, and the first steel frames.

5. The combined flag-raising platform according to claim 1, characterized in that, Two second steel frames are embedded on both sides of the front bearing seat, and two third steel frames are embedded on the side of the two outer bearing seats that are far apart from each other. Bolt rods extending into the third steel frames are provided in the second steel frames and nuts are threaded on them to fix the front bearing seat and the two outer bearing seats respectively.

6. The combined flag-raising platform according to claim 1, characterized in that, The flagpole has an installation opening and a maintenance cover is fixedly installed thereon, and the maintenance cover corresponds to the installation position of the two rollers.

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