A hanging basket bottom basket continuous small stroke lowering device and construction method

Abstract

The present invention provides a continuous small-stroke lowering device for a hanging basket bottom basket and a construction method. The device comprises a fixed anchor I arranged on a hanging basket bottom basket cross beam, a suspension mechanism evenly arranged on a hanging basket bracket, a fixed anchor II evenly fixed above a continuous beam, a suspension anchor evenly arranged between the suspension mechanism and the fixed anchor II, and a steel strand. Suspension ear plates are arranged on both sides of the hanging basket bottom basket cross beam, a lifting ring is arranged above the fixed anchor I, and connecting holes are arranged at corresponding positions of the lifting ring and the suspension ear plate. A fixing pin is arranged on the connecting hole, and the fixed anchor I is suspended and fixed to the hanging basket bottom basket cross beam. The top of the suspension mechanism is fixed on the hanging basket bracket, and the lower end is connected to the suspension anchor. The steel strand connects and fixes the fixed anchor I, the fixed anchor II, the suspension anchor, the continuous beam, and the hanging basket bottom basket cross beam as a whole. The present invention is easy to operate, takes both economy and safety into consideration, and can effectively ensure the safety of vehicles and pedestrians under the bridge when crossing an existing road.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a device for lowering a bottom basket of a hanging basket in a continuous small stroke and a construction method. Background Art

[0002] The variable cross-section continuous prestressed concrete continuous beam has high rigidity, light weight, good dynamic performance, small deformation, gentle deflection curve, and large spanning capacity. It has obvious economic advantages under conditions such as crossing rivers, lakes, seas, mountain valleys, and existing roads. During the construction of the variable cross-section continuous prestressed concrete continuous beam, a mobile hanging basket is required for construction. After the construction is completed, there are several conventional methods for dismantling the bottom basket of the mobile hanging basket: one is to use 4 hydraulic jacks to assist in lowering the fine-rolled threaded steel bars, and the other is to use 4 winches to assist in lowering the wire rope.

[0003] The prior art patent application No. 201710118314.5 discloses a device for lowering the bottom rail of a hanging basket on a high pier in a mountainous area, comprising a gear jack (1), finely rolled threaded steel (2), and a hydraulic through-hole jack (11), characterized in that: the gear jack (1) is placed on a box beam, and is connected to the bottom rail of the hanging basket by passing through the finely rolled threaded steel (2) passing through the wing plate of the box beam, and is used to lower the bottom rail of the hanging basket by 1.7 m; a node plate (3 ), the node plate (3) is fixedly connected to the finely rolled threaded steel (2) connected between the hydraulic through-hole jack (11) and the bottom rail of the hanging basket through the threaded steel connector (6) and the finely rolled nut, the hydraulic through-hole jack (11) is placed on the box beam through the longitudinal beam (18) and the cross beam (17), a pad is arranged on the hydraulic through-hole jack (11), and a finely rolled nut is arranged on the pad, a pad and a finely rolled nut are arranged in the middle of the two longitudinal beams (18), and the two finely rolled nuts are connected to the finely rolled steel bar (2). The jack is used to realize the stable lowering of the bottom basket.

[0004] The patent application No. 202020339395.9 discloses a lowering device for a hanging basket bottom support system, comprising a traction assembly (2) and a guide assembly (3), wherein the traction assembly (2) comprises a winch (21) and a steel wire rope (22), and the winch (21) is fixedly arranged on a bridge body (1); the guide assembly (3) comprises a three-phase fixed pulley (32), a three-phase movable pulley (33) and a guide pulley (34); the guide pulley (34) is fixedly arranged on the bridge body (1), and the three-phase fixed pulley (32) is fixedly hoisted on the bridge body (1). Below, the three-phase fixed pulley (32) is slidably connected to the three-phase movable pulley (33) through a steel wire rope (22); the three-phase movable pulley (33) is fixedly connected to the basket bottom support system (5); one end of the steel wire rope (22) is fixedly arranged in the hoist (21), and the other end of the steel wire rope (22) is sequentially bypassed by the guide pulley (34), the three-phase movable pulley (33), the three-phase fixed pulley (32), and then bypassed by the three-phase movable pulley (33) again; the terminal end of the steel wire rope (22) is fixedly connected to the three-phase fixed pulley (32), and the bottom basket is lowered by using the hoist and the steel wire rope.

[0005] Of the above two methods, method 1 can lower the steel bars in a relatively balanced and stable manner, but the fine-rolled threaded steel bars need to be connected with multiple connectors, which poses a great safety hazard and is not economical. Method 2 can lower the steel bars quickly, but it is difficult to control the balanced lowering of the four hanging points, and it is easy for the local lowering to be too fast or too slow, resulting in concentrated force at a single point and the hidden danger of the bottom basket being easily separated. Therefore, a device and method that can take into account both economy and safety and realize continuous and stable lowering of the bottom basket is needed. Summary of the invention

[0006] The present invention provides a device and a construction method for continuously lowering the bottom basket of a hanging basket in a small stroke, which can take into account both economy and safety, and is of great significance for the dismantling construction of the bottom basket of the hanging basket, especially under the condition of crossing existing roads, and can effectively ensure the safety of vehicles and pedestrians under the bridge.

[0007] The technical solution of the present invention is: a continuous small-stroke lowering device for a bottom basket of a hanging basket, comprising a fixed anchor I evenly arranged on a cross beam of a bottom basket of the hanging basket, a suspension mechanism evenly arranged on a bracket of the hanging basket, a fixed anchor II evenly fixed above the continuous beam, a suspension anchor evenly arranged between the suspension mechanism and the fixed anchor II, and a steel strand, suspension ear plates are provided on both sides of the cross beam of the bottom basket of the hanging basket, a lifting ring is provided above the fixed anchor I, connecting holes are provided at corresponding positions of the lifting ring and the suspension ear plate, a fixing pin is provided on the connecting hole, the fixing anchor I is suspended and fixed to the cross beam of the bottom basket of the hanging basket, the top end of the suspension mechanism is fixed on the bracket of the hanging basket, and the lower end is connected to the suspension anchor, and the steel strand connects and fixes the fixed anchor I, the fixed anchor II, the suspension anchor, the continuous beam, and the cross beam of the bottom basket of the hanging basket as a whole.

[0008] The solution further comprises: the fixed anchor I comprises a supporting steel plate I, a fixing nut I, an anchor I, a spring clip I, a limiting steel plate I, a limiting nut I, and a screw rod I. The anchor I is provided with a plurality of holes I, the steel strand passes through the central hole I, the screw rod I is symmetrically arranged on the holes I on both sides of the anchor I, the fixing nut I is arranged at both ends of the anchor I to fix the screw rod I, a supporting steel plate I is provided above the fixing nut I at the top, a limiting steel plate I and a limiting nut I are provided below the fixing nut I at the bottom, and the spring clip I is arranged between the anchor I and the limiting steel plate I.

[0009] The solution further comprises that the fixed anchor II comprises a supporting steel plate II, a fixing nut II, an anchor II, a spring clip II, a limiting steel plate II, a limiting nut II, and a screw rod II. The anchor II is provided with a plurality of holes II. The steel strand passes through the central hole II. The screw rod II is symmetrically arranged on the holes II on both sides of the anchor II. The fixing nut II is arranged at both ends of the anchor II to fix the screw rod II. A supporting steel plate II is provided below the fixing nut II at the bottom. A limiting steel plate II and a limiting nut II are provided above the fixing nut II at the top. The spring clip II is arranged between the anchor II and the limiting steel plate II.

[0010] The scheme further comprises that the suspension anchor comprises a suspension ring, a spring clip III, a limit nut III, a limit steel plate III, an anchor III, a fixing nut III and a screw rod III. The anchor III is provided with a plurality of holes III. The steel strand passes through the hole III in the center. The screw rod III is symmetrically arranged on the holes III on both sides of the anchor III. The suspension ring is a U-shaped structure. The two ends of the suspension ring are provided with anchor III on the two holes III close to the center. The fixing nut III is arranged on the screw rod III and the suspension ring at the bottom and top of the anchor III. A limit steel plate III and a limit nut III are provided on the fixing nut III at the top. The spring clip III is arranged between the anchor III and the limit steel plate III.

[0011] According to a further solution, the suspension mechanism includes a fall chain hoist and a suspension bracket, wherein the suspension bracket is fixed to the hanging basket bracket, one end of the fall chain hoist is fixed to the hanging basket bracket through the suspension bracket, and the other end is connected to the suspension ring of the suspension anchor.

[0012] According to a further solution, the continuous beam and the cross beam of the bottom basket of the hanging basket are provided with a hole IV.

[0013] According to a further solution, the lifting ring includes ear plates and connecting plates on both sides, the ear plates are fixed on both sides of the fixing anchor I, the connecting plate is provided with mounting holes, and the steel strands pass through the mounting holes, hole I, hole II, hole III, and hole IV to achieve connection.

[0014] According to a further solution, the suspension bracket includes two vertical rods and a horizontal rod, the vertical rods are fixed on the hanging basket bracket, the horizontal rod is arranged between the vertical rods, and the upper end of the chain hoist is suspended on the horizontal rod.

[0015] On the other hand, the present invention provides a construction method for continuously lowering a hanging basket with a small stroke, the steps of which include:

[0016] 1) Lower the required steel strands to the top of the continuous beam according to the lowering height of the bottom basket of the hanging basket, and install the suspension anchor, fixed anchor I, fixed anchor II and suspension mechanism;

[0017] 2) Loosen the limit nut I of the fixed anchor I and the limit nut II of the fixed anchor II, tighten the limit nut III of the suspension anchor, and clamp and fix the steel strand that is being lowered in a cycle by the suspension anchor;

[0018] 3) Adjust the chain hoist of the suspension mechanism to move the suspension anchor vertically downward;

[0019] 4) The steel strand moves downward with the suspension anchor, and the fixed anchor I on the crossbeam of the bottom basket of the hanging basket moves accordingly, lowering the bottom basket of the hanging basket downward for a stroke;

[0020] 5) Tighten the limit nut I of the fixed anchor I and the limit nut II of the fixed anchor II. At this time, the steel strand is clamped by the fixed nut I and the fixed nut II. Loosen the limit nut III of the suspension anchor, adjust the chain hoist, lift the suspension anchor to the top, tighten the limit nut III of the suspension anchor, loosen the limit nut I of the fixed anchor I and the limit nut II of the fixed anchor II, the steel strand is clamped by the fixed nut III, adjust the chain hoist to lower the suspension anchor, and lower the bottom basket of the hanging basket to the second stroke;

[0021] 6) Repeat steps 1) to 5) and lower the bottom basket of the hanging basket to the ground smoothly and evenly and remove it.

[0022] The advantages of the present invention are: by arranging multiple anchors, steel strands and suspension mechanisms on the hanging basket, various parts of the bottom basket of the hanging basket are evenly stressed and can be lowered smoothly until they hit the ground, and the operation is convenient, taking into account both economy and safety. It is of great significance for the dismantling construction of the bottom basket of the hanging basket, especially under the condition of crossing existing roads, and can effectively ensure the safety of vehicles and pedestrians under the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a longitudinal structural schematic diagram of a device for lowering a bottom basket of a hanging basket in a continuous small stroke according to the present invention;

[0024] Figure 2 It is a horizontal structural schematic diagram of a device for lowering a bottom basket of a hanging basket in a continuous small stroke according to the present invention;

[0025] Figure 3The invention relates to a hanging basket bottom basket continuous small stroke lowering device. Figure 2 The enlarged schematic diagram at A in the middle;

[0026] Figure 4 The invention relates to a hanging basket bottom basket continuous small stroke lowering device. Figure 2 The enlarged schematic diagram of point B in the middle;

[0027] Figure 5 It is a schematic diagram of a fixing anchor I of a hanging basket bottom basket continuous small stroke lowering device of the present invention;

[0028] Figure 6 It is a schematic diagram of a fixing anchor II of a continuous small-stroke lowering device for a hanging basket bottom basket of the present invention;

[0029] Figure 7 This is the structural intention of the suspension anchor of a hanging basket bottom basket continuous small stroke lowering device of the present invention;

[0030] Figure 8 This is the structural intention of the suspension mechanism of a hanging basket bottom basket continuous small stroke lowering device of the present invention;

[0031] Among them: 1. hanging basket bracket, 2. hanging basket bottom basket crossbeam, 3. fixed anchor Ⅰ, 31. supporting steel plate Ⅰ, 32. fixing nut Ⅰ, 33. anchor Ⅰ, 34. spring clip Ⅰ, 35. limiting steel plate Ⅰ, 36. limiting nut Ⅰ, 37. screw rod Ⅰ, 4. steel strand, 5. fixed anchor Ⅱ, 51. supporting steel plate Ⅱ, 52. fixing nut Ⅱ, 53. anchor Ⅱ, 54. limiting steel plate Ⅱ, 55. limiting nut Ⅱ, 56. screw rod Ⅱ, 57. spring clip Ⅱ, 6. suspension anchor, 61. suspension ring, 62. spring clip Ⅲ, 63. limiting nut Ⅲ, 64. limiting steel plate Ⅲ, 65. anchor Ⅲ, 66. fixing nut Ⅲ, 67. screw rod Ⅲ, 7. suspension mechanism, 8. continuous beam, 9. lifting ring, 10. fixed pin shaft, 11. suspension ear plate, 12. suspension bracket. DETAILED DESCRIPTION

[0032] The present invention is described clearly and completely below in conjunction with the accompanying drawings so that those skilled in the art can fully implement the present invention without having to make any creative work.

[0033] The specific implementation mode of the present invention is: Figure 1-8As shown, a continuous small-stroke lowering device for a hanging basket bottom basket comprises a fixed anchor Ⅰ3 evenly arranged on a hanging basket bottom basket cross beam 2 (including a front cross beam and a rear cross beam), a suspension mechanism 7 evenly arranged on a hanging basket bracket 2, a fixed anchor Ⅱ5 evenly fixed above a continuous beam 8, a suspension anchor 6 evenly arranged between the suspension mechanism 7 and the fixed anchor Ⅱ5, and a steel strand 4. Suspension ear plates 11 are arranged on both sides of the hanging basket bottom basket cross beam 2, a lifting ring 9 is arranged above the fixed anchor Ⅰ3, connecting holes are arranged at corresponding positions of the lifting ring 9 and the suspension ear plate 11, and a fixing pin 10 is arranged on the connecting hole to suspend and fix the fixed anchor Ⅰ3 to the hanging basket bottom basket cross beam 2. The top end of the suspension mechanism 7 is fixed on the hanging basket bracket 1, and the lower end is connected to the suspension anchor 6. The steel strand 4 connects and fixes the fixed anchor Ⅰ3, the fixed anchor Ⅱ5, the suspension anchor 6, the continuous beam 8, and the hanging basket bottom basket cross beam 2 as a whole.

[0034] Furthermore, the fixed anchor Ⅰ3 includes a supporting steel plate Ⅰ31, a fixing nut Ⅰ32, an anchor Ⅰ33, a spring clip Ⅰ34, a limiting steel plate Ⅰ35, a limiting nut Ⅰ36, and a screw rod Ⅰ37. The anchor Ⅰ33 is provided with a plurality of holes Ⅰ, the steel strand 4 passes through the central hole Ⅰ, the screw rod Ⅰ37 is symmetrically arranged on the holes Ⅰ on both sides of the anchor Ⅰ33, the fixing nut Ⅰ32 is arranged at both ends of the anchor Ⅰ33 to fix the screw rod Ⅰ37, a supporting steel plate Ⅰ31 is provided above the fixing nut Ⅰ32 at the top, a limiting steel plate Ⅰ35 and a limiting nut Ⅰ36 are provided below the fixing nut Ⅰ32 at the bottom, and the spring clip Ⅰ34 is arranged between the anchor Ⅰ33 and the limiting steel plate Ⅰ35.

[0035] Furthermore, the fixed anchor Ⅱ5 includes a supporting steel plate Ⅱ51, a fixing nut Ⅱ52, an anchor Ⅱ53, a spring clip Ⅱ57, a limiting steel plate Ⅱ54, a limiting nut Ⅱ55, and a screw rod Ⅱ56. The anchor Ⅱ53 is provided with a plurality of holes Ⅱ. The steel strand 4 passes through the central hole Ⅱ. The screw rod Ⅱ56 is symmetrically arranged on the holes Ⅱ on both sides of the anchor Ⅱ53. The fixing nut Ⅱ52 is arranged at both ends of the anchor Ⅱ53 to fix the screw rod Ⅱ56. A supporting steel plate Ⅱ51 is provided below the fixing nut Ⅱ52 at the bottom, and a limiting steel plate Ⅱ54 and a limiting nut Ⅱ55 are provided above the fixing nut Ⅱ52 at the top. The spring clip Ⅱ57 is arranged between the anchor Ⅱ53 and the limiting steel plate Ⅱ54.

[0036] Furthermore, the suspension anchor 6 includes a suspension ring 61, a spring clip III62, a limiting nut III63, a limiting steel plate III64, an anchor III65, a fixing nut III66, and a screw rod III67. The anchor III65 is provided with a plurality of holes III. The steel strand 4 passes through the central hole III. The screw rod III67 is symmetrically arranged on the holes III on both sides of the anchor III65. The suspension ring 61 is a U-shaped structure. The two ends of the suspension ring 61 are passed through the two holes III near the center of the anchor III65. The fixing nut III66 is arranged on the screw rod III67 and the suspension ring 61 at the bottom and top of the anchor III65. The fixing nut III66 at the top is provided with a limiting steel plate III64 and a limiting nut III63. The spring clip III62 is arranged between the anchor III65 and the limiting steel plate III64.

[0037] Furthermore, the suspension mechanism 7 includes a fall chain hoist and a suspension bracket 12, the suspension bracket 12 is fixed on the hanging basket bracket 1, one end of the fall chain hoist is fixed to the hanging basket bracket 1 through the suspension bracket 12, and the other end is connected to the suspension ring 61 of the suspension anchor 6.

[0038] Furthermore, the continuous beam 8 and the bottom basket cross beam 2 of the hanging basket are provided with a hole IV.

[0039] Furthermore, the lifting ring 9 includes ear plates and connecting plates on both sides, the ear plates are fixed on both sides of the fixing anchor Ⅰ3, the connecting plate is provided with mounting holes, and the steel strand 4 passes through the mounting holes, channel Ⅰ, channel Ⅱ, channel Ⅲ, and channel Ⅳ to achieve connection.

[0040] Furthermore, the suspension bracket 12 includes two vertical bars and a cross bar, the vertical bars are fixed on the hanging basket bracket 1, the cross bar is arranged between the vertical bars, and the upper end of the chain hoist is suspended on the cross bar.

[0041] On the other hand, the present invention provides a construction method for continuously lowering a hanging basket with a small stroke, the steps of which include:

[0042] 1) Lower the required steel strands 4 to the top of the continuous beam according to the lowering height of the bottom basket of the hanging basket, and install the suspension anchor 6, the fixed anchor I3, the fixed anchor II5 and the suspension mechanism 7;

[0043] 2) Loosen the limiting nut I36 of the fixing anchor I3 and the limiting nut II55 of the fixing anchor II5, tighten the limiting nut III63 of the suspension anchor 6, and clamp and fix the steel strand 4 that is being lowered in a cycle by the suspension anchor 6;

[0044] 3) Adjust the chain hoist of the suspension mechanism 7 to move the suspension anchor 6 vertically downward;

[0045] 4) The steel strand 4 moves downward along with the suspension anchor 6, and the fixed anchor Ⅰ3 on the bottom basket crossbeam 2 of the hanging basket moves accordingly, lowering the bottom basket of the hanging basket downward by one stroke;

[0046] 5) Tighten the limiting nut I36 of the fixed anchor I3 and the limiting nut II55 of the fixed anchor II5. At this time, the steel strand 4 is clamped by the fixing nut I32 and the fixing nut II52. Loosen the limiting nut III63 of the suspension anchor 6, adjust the chain hoist, lift the suspension anchor 6 to the uppermost end, tighten the limiting nut III63 of the suspension anchor 6, loosen the limiting nut I36 of the fixed anchor I3 and the limiting nut II55 of the fixed anchor II5, the steel strand 4 is clamped by the fixing nut III66, adjust the chain hoist to lower the suspension anchor 6, and lower the bottom basket of the hanging basket to the second stroke;

[0047] 6) Repeat steps 1) to 5) and lower the bottom basket of the hanging basket to the ground smoothly and evenly and remove it.

[0048] The preferred embodiments of the present invention are described above. It should be pointed out that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any simple modifications, equivalent changes and modifications made to the above embodiments by any technician familiar with the art based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hanging basket bottom basket continuous small stroke lowering device, characterized in that: The invention comprises a fixed anchor I evenly arranged on the cross beam of the bottom basket of the hanging basket, a suspension mechanism evenly arranged on the hanging basket bracket, a fixed anchor II evenly fixed on the continuous beam, a suspension anchor and a steel strand evenly arranged between the suspension mechanism and the fixed anchor II, the two sides of the cross beam of the bottom basket of the hanging basket are provided with suspension ear plates, a lifting ring is arranged above the fixed anchor I, connecting holes are arranged at corresponding positions of the lifting ring and the suspension ear plate, a fixing pin is arranged on the connecting hole, the fixed anchor I is suspended and fixed to the cross beam of the bottom basket of the hanging basket, the top end of the suspension mechanism is fixed on the hanging basket bracket, and the lower end is connected to the suspension anchor, the steel strand connects the fixed anchor I, the fixed anchor II, the suspension anchor, the continuous beam, the hanging basket The basket bottom and basket crossbeam are connected and fixed as a whole; the fixed anchor I includes a supporting steel plate I, a fixing nut I, an anchor I, a spring clip I, a limiting steel plate I, a limiting nut I, and a screw rod I. A plurality of holes I are provided on the anchor I. The steel strand passes through the hole I in the center. The screw rod I is symmetrically arranged on the holes I on both sides of the anchor I. The fixing nut I is arranged at both ends of the anchor I to fix the screw rod I. A supporting steel plate I is provided above the fixing nut I at the top, and a limiting steel plate I and a limiting nut I are provided below the fixing nut I at the bottom. The spring clip I is arranged between the anchor I and the limiting steel plate I; the fixed anchor II includes a supporting steel plate II, a fixing nut II, an anchor Ⅱ, spring clip II, limit steel plate II, limit nut II, screw rod II, the anchor II is provided with a plurality of holes II, the steel strand passes through the central hole II, the screw rod II is symmetrically arranged on the holes II on both sides of the anchor II, the fixing nut II is arranged at both ends of the anchor II to fix the screw rod II, a supporting steel plate II is arranged below the fixing nut II at the bottom, a limit steel plate II and a limit nut II are arranged above the fixing nut II at the top, the spring clip II is arranged between the anchor II and the limit steel plate II; the suspension anchor comprises a suspension ring, a spring clip III, a limit nut III, a limit steel plate III, an anchor III, a fixing nut III, screw rod III, the anchor III is provided with a plurality of holes III, The steel strand passes through the central hole III, the screw rod III is symmetrically arranged on the holes III on both sides of the anchor III, the suspension ring is a U-shaped structure, and the two ends of the suspension ring are passed through the anchor III on the two holes III close to the center, the fixing nut III is arranged on the screw rod III and the suspension ring at the bottom and top of the anchor III, and the fixing nut III at the top is provided with a limiting steel plate III and a limiting nut III, and the spring clip III is arranged between the anchor III and the limiting steel plate III; the suspension mechanism includes a fall chain hoist and a suspension bracket, the suspension bracket is fixed on the hanging basket bracket, one end of the fall chain hoist is fixed to the hanging basket bracket through the suspension bracket, and the other end is connected to the suspension ring of the suspension anchor.

2. The device for lowering the bottom basket of a hanging basket in a continuous small stroke according to claim 1 is characterized in that: The continuous beam and the cross beam of the bottom basket of the hanging basket are provided with a hole IV.

3. The device for lowering the bottom basket of a hanging basket in a continuous small stroke according to claim 2 is characterized in that: The lifting ring includes ear plates and connecting plates on both sides. The ear plates are fixed on both sides of the fixing anchor I. The connecting plate is provided with mounting holes. The steel strands pass through the mounting holes, hole I, hole II, hole III and hole IV to achieve connection.

4. The device for lowering the bottom basket of a hanging basket in a continuous small stroke according to claim 3 is characterized in that: The suspension bracket comprises two vertical bars and a cross bar, the vertical bars are fixed on the hanging basket bracket, the cross bar is arranged between the vertical bars, and the upper end of the chain hoist is suspended on the cross bar.

5. A construction method for continuously lowering a hanging basket with a small stroke using the device of claim 4, characterized in that: The steps include: 1) Lower the required steel strands to the top of the continuous beam according to the lowering height of the bottom basket of the hanging basket, and install the suspension anchor, fixed anchor I, fixed anchor II and suspension mechanism; 2) Loosen the limit nut I of the fixed anchor I and the limit nut II of the fixed anchor II, tighten the limit nut III of the suspension anchor, and clamp and fix the steel strand that is being lowered in a cycle by the suspension anchor; 3) Adjust the chain hoist of the suspension mechanism to move the suspension anchor vertically downward; 4) The steel strand moves downward with the suspension anchor, and the fixed anchor I on the crossbeam of the bottom basket of the hanging basket moves accordingly, lowering the bottom basket of the hanging basket downward for a stroke; 5) Tighten the limit nut I of the fixed anchor I and the limit nut II of the fixed anchor II. At this time, the steel strand is clamped by the fixed nut I and the fixed nut II. Loosen the limit nut III of the suspension anchor, adjust the chain hoist, lift the suspension anchor to the top, tighten the limit nut III of the suspension anchor, loosen the limit nut I of the fixed anchor I and the limit nut II of the fixed anchor II, the steel strand is clamped by the fixed nut III, adjust the chain hoist to lower the suspension anchor, and lower the bottom basket of the hanging basket to the second stroke; 6) Repeat steps 1) to 5) and lower the bottom basket of the hanging basket to the ground smoothly and evenly and remove it.

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