Adjustable sling system of bridge hanging basket

Abstract

The invention belongs to the technical field of bridge hanging basket construction, and particularly relates to an adjustable sling system of a bridge hanging basket. The adjustable sling system comprises a fine adjustment seat and a coarse adjustment mechanism, a plurality of holes are formed in the steel plate sling at intervals, and adjusting pin shafts are detachably arranged in the holes, close to the coarse adjustment mechanism, of the steel plate sling; the coarse adjustment mechanism comprises support frames which are arranged on the fine adjustment seat in pairs; the rotating assembly is rotationally arranged between the pair of supporting frames, and a plurality of transmission shafts distributed in the circumferential direction are arranged on the rotating assembly; through rotation of the rotating assembly, the multiple transmission shafts are driven to be in meshing transmission with the multiple adjusting pin shafts on the steel plate hanging belt in sequence, and the transmission shafts are made to support the adjusting pin shafts. In the adjustable sling system, the height of the steel plate sling is roughly adjusted through the rough adjusting mechanism, the height of the steel plate sling is finely adjusted through the fine adjusting seat, and therefore millimeter-level accurate adjustment of the height of the steel plate sling is achieved, and the height adjusting efficiency of the steel plate sling is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge hanging basket construction, and particularly relates to an adjustable suspension strap system for a bridge hanging basket. Background Art

[0002] A bridge hanging basket is the main equipment for pouring concrete in cantilever construction, and is usually used for the sectional construction of prestressed concrete continuous beams, T-shaped steel structures and cantilever beams. The hanging basket can move forward integrally along the track; the hanging basket is often used in the construction of large-span and ultra-wide bridges, and has the advantages of light structure, simple and convenient assembly, no dead weight, etc. compared with other methods; its design principles include light self-weight, simple structure, firm and stable, convenient for forward movement, installation and disassembly, strong reusability, and small deformation after being stressed, which can greatly improve the bridge construction efficiency.

[0003] The hanging devices of traditional hanging baskets mostly adopt single high-strength threaded steel suspenders or steel plate suspension straps. The steel plate suspension straps have the advantages of large bearing capacity and small deformation; however, generally, a hole is arranged every 15 cm on the steel plate suspension strap. The height of the steel plate suspension strap is adjusted by a hoisting device, and after the steel plate suspension strap is adjusted in place, it is fixed in a hole of the steel plate suspension strap by a pin shaft to realize the adjustment of the lifting movement of the steel plate suspension strap. The adjustment of the height of the steel plate suspension strap is limited by the distance between the holes, which not only makes it difficult to adjust the height of the steel plate suspension strap, but also has a low adjustment accuracy of the height of the steel plate suspension strap, and it is impossible to achieve precise adjustment of the steel plate suspension strap at the millimeter level, resulting in extremely low efficiency of adjusting the height of the steel plate suspension strap.

[0004] Therefore, an improved technical solution is needed to address the above deficiencies in the prior art. Contents of the Invention

[0005] The purpose of the invention is to provide an adjustable suspension strap system for a bridge hanging basket to at least solve the above problems existing in the prior art.

[0006] To achieve the above purpose, the invention provides the following technical solutions:

[0007] An adjustable suspension strap system for a bridge hanging basket, the bridge hanging basket at least includes a front cross beam and a steel plate suspension strap, the adjustable suspension strap system includes a fine adjustment seat and a coarse adjustment mechanism, the fine adjustment seat is arranged above the front cross beam, and the coarse adjustment mechanism is arranged above the fine adjustment seat;

[0008] A plurality of holes are arranged at intervals on the steel plate suspension strap, and adjusting pin shafts are detachably arranged in the holes on the steel plate suspension strap close to the coarse adjustment mechanism;

[0009] The coarse adjustment mechanism includes:

[0010] Support frames, the support frames are arranged in pairs on the fine adjustment seat;

[0011] A rotating assembly, the rotating assembly is rotatably arranged between a pair of support frames, and a plurality of transmission shafts distributed in a circumferential manner are arranged on the rotating assembly;

[0012] By the rotation of the rotating assembly, a plurality of transmission shafts are driven to be meshed and transmitted with a plurality of adjusting pin shafts on the steel plate sling in sequence, so that the transmission shafts support the adjusting pin shafts.

[0013] For the adjustable sling system of the bridge hanging basket as described above, preferably, both ends of the adjusting pin shaft extend out of both sides of the steel plate sling;

[0014] There are two rotating assemblies, which are respectively a first rotating assembly and a second rotating assembly. The first rotating assembly and the second rotating assembly are respectively meshed and transmitted with both ends of the same adjusting pin shaft;

[0015] The first rotating assembly and the second rotating assembly rotate in opposite directions.

[0016] For the adjustable sling system of the bridge hanging basket as described above, preferably, the coarse adjustment mechanism further includes a support sub-frame, and the rotating assembly further includes a rotating shaft;

[0017] A first gear is coaxially arranged on the rotating shaft of the first rotating assembly, and a second gear is coaxially arranged on the rotating shaft of the second rotating assembly;

[0018] Both the first gear and the second gear are rotatably arranged between the support frame and the support sub-frame.

[0019] For the adjustable sling system of the bridge hanging basket as described above, preferably, a first transmission gear and a second transmission gear are arranged between the first gear and the second gear. The first gear is meshed and transmitted with the first transmission gear, the first transmission gear is meshed and transmitted with the second transmission gear, and the second transmission gear is meshed and transmitted with the second gear.

[0020] For the adjustable sling system of the bridge hanging basket as described above, preferably, the coarse adjustment mechanism further includes a coarse adjustment driving gear, and the coarse adjustment driving gear is meshed and transmitted with the first gear or the second gear.

[0021] For the adjustable sling system of the bridge hanging basket as described above, preferably, the coarse adjustment mechanism further includes a coarse adjustment driving source. The coarse adjustment driving source is arranged on one side of the coarse adjustment driving gear, and the coarse adjustment driving source is in transmission connection with the coarse adjustment driving gear.

[0022] For the adjustable sling system of the bridge hanging basket as described above, preferably, the rotating assembly includes two discs. A plurality of transmission shafts are arranged between the two discs, and the plurality of transmission shafts are distributed in a circumferential manner on the discs; A rotating shaft is arranged at the center of the two discs, and the rotating assembly is rotatably mounted between a pair of support frames through the rotating shaft.

[0023] The adjustable sling system of the bridge hanging basket as described above. Preferably, the fine-tuning seat includes a fine-tuning top seat and a fine-tuning bottom seat. A double-headed stud is arranged between the fine-tuning top seat and the fine-tuning bottom seat. The double-headed stud is threadedly connected to both the fine-tuning top seat and the fine-tuning bottom seat, and the thread directions at both ends of the double-headed stud are opposite.

[0024] The adjustable sling system of the bridge hanging basket as described above. Preferably, a fine-tuning driven gear is sleeved at the central position of the double-headed stud, and a fine-tuning driving gear is meshed and driven on one side of the fine-tuning driven gear.

[0025] The adjustable sling system of the bridge hanging basket as described above. Preferably, the fine-tuning seat further includes a fine-tuning driving source, the fine-tuning driving source is drivingly connected to the fine-tuning driving gear, and the fine-tuning driving source is arranged on the fine-tuning bottom seat.

[0026] Beneficial effects:

[0027] In this adjustable sling system, by driving the rotating assembly to perform a self-rotating motion, multiple transmission shafts rotate clockwise or counterclockwise around the central axis of the rotating assembly; when the transmission shaft meshed with the adjusting pin rotates upward, under the meshing and driving action of the transmission shaft, the adjusting pin is driven to lift upward, thereby realizing the rapid upward lifting of the steel plate sling; when the transmission shaft meshed with the adjusting pin rotates downward, under the meshing and driving action of the transmission shaft, the adjusting pin is driven to fall downward, thereby realizing the rapid downward lowering of the steel plate sling; that is, the coarse adjustment mechanism realizes the rapid coarse adjustment of the height of the steel plate sling, and can greatly improve the efficiency of adjusting the height of the steel plate sling.

[0028] One end of the fine-tuning top seat facing the fine-tuning bottom seat is provided with a threaded hole, and one end of the fine-tuning bottom seat facing the fine-tuning top seat is also provided with a threaded hole, and the thread directions in both threaded holes are opposite. The top end of the double-headed stud is threadedly connected to the fine-tuning top seat, and the bottom end of the double-headed stud is threadedly connected to the fine-tuning bottom seat. By rotating the double-headed stud, the double-headed stud is retracted into or extended out of the fine-tuning top seat and the fine-tuning bottom seat, thereby realizing the stepless adjustment of the height of the fine-tuning seat.

[0029] That is, in this adjustable sling system, the height of the steel plate sling is coarsely adjusted by the coarse adjustment mechanism, and the height of the steel plate sling is finely adjusted by the fine-tuning seat, thereby realizing the precise adjustment of the height of the steel plate sling at the millimeter level, and greatly improving the efficiency of adjusting the height of the steel plate sling. Description of the drawings

[0030] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0031] Figure 1Front view of an adjustable sling system according to an embodiment of the present invention

[0032] Figure 2 Side view of the position of the rotating assembly in an adjustable sling system according to an embodiment of the present invention

[0033] Figure 3 Diagram of the transmission connection relationship between the first gear and the second gear according to an embodiment of the present invention

[0034] In the figure: 1. First rotating assembly; 2. Support frame; 3. Coarse adjustment driving gear; 4. Support sub-frame; 5. Coarse adjustment driving source; 6. Fine adjustment top seat; 7. Fine adjustment base; 8. Double-headed stud; 9. Fine adjustment driven gear; 10. Second rotating assembly; 11. Transmission shaft; 12. Fine adjustment driving gear; 13. Fine adjustment driving source; 14. First gear; 15. First transmission gear; 16. Second transmission gear; 17. Second gear; 100. Steel plate sling; 101. Adjusting pin; 200. Front cross beam. Detailed implementation manners

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0036] In the description of the present invention, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0038] According to a specific embodiment of the present invention, as Figures 1-3As shown in the figure, the present invention provides an adjustable sling system for a bridge hanging basket. The bridge hanging basket at least includes a front cross beam 200 and a steel plate sling 100. The adjustable sling system includes a fine adjustment seat and a coarse adjustment mechanism. The fine adjustment seat is arranged above the front cross beam 200, and the coarse adjustment mechanism is arranged above the fine adjustment seat. In this embodiment, perforations are provided at corresponding positions on the fine adjustment seat and the front cross beam 200 for the steel plate sling 100. The coarse adjustment mechanism is movably connected to the upper part of the steel plate sling 100. The middle and lower parts of the steel plate sling 100 penetrate through the perforations on the fine adjustment seat and the front cross beam 200 and extend downward.

[0039] A plurality of holes are arranged at intervals on the steel plate sling 100. Adjusting pins 101 are detachably arranged in the holes on the steel plate sling 100 close to the coarse adjustment mechanism. In this embodiment, the adjusting pins 101 are only arranged in the holes on the steel plate sling 100 close to the coarse adjustment mechanism. The adjusting pins 101 in the holes on the steel plate sling 100 far from the coarse adjustment mechanism can be removed. The adjusting pin 101 can be installed and connected to the hole on the steel plate sling 100 through detachable connection methods such as key connection or interference fit connection.

[0040] The coarse adjustment mechanism includes:

[0041] Support frames 2, and the support frames 2 are arranged in pairs on the fine adjustment seat.

[0042] A rotating assembly, the rotating assembly is rotatably arranged between a pair of support frames 2, and a plurality of transmission shafts 11 distributed in a circumferential manner are arranged on the rotating assembly.

[0043] By rotating the rotating assembly, a plurality of transmission shafts 11 are driven to be meshed and transmitted with a plurality of adjusting pins 101 on the steel plate sling 100 in sequence, so that the transmission shafts 11 support the adjusting pins 101.

[0044] In this adjustable sling system, by driving the rotating assembly to perform a self-rotating motion, a plurality of transmission shafts 11 rotate clockwise or counterclockwise around the central axis of the rotating assembly. When the transmission shaft 11 meshed and transmitted with the adjusting pin 101 rotates upward, under the meshing and transmission action of the transmission shaft 11, the adjusting pin 101 is driven to lift upward, so as to realize the rapid upward lifting of the steel plate sling 100. When the transmission shaft 11 meshed and transmitted with the adjusting pin 101 rotates downward, under the meshing and transmission action of the transmission shaft 11, the adjusting pin 101 is driven to descend, so as to realize the rapid downward lowering of the steel plate sling 100. That is, in this application, the setting of the coarse adjustment mechanism realizes the rapid coarse adjustment of the height of the steel plate sling 100, and can greatly improve the efficiency of height adjustment of the steel plate sling 100.

[0045] Both ends of the adjusting pin shaft 101 extend on both sides of the steel plate sling 100; in this embodiment, after the adjusting pin shaft 101 passes through the hole of the steel plate sling 100, both ends of the adjusting pin shaft 101 are respectively located on both sides of the steel plate sling 100. At this time, the adjusting pin shaft 101 is symmetrically arranged along the center line of the steel plate sling 100.

[0046] There are two rotating components, namely the first rotating component 1 and the second rotating component 10. The first rotating component 1 and the second rotating component 10 are respectively meshed and driven with both ends of the same adjusting pin shaft 101; the rotating directions of the first rotating component 1 and the second rotating component 10 are opposite.

[0047] In an embodiment of the present application, the first rotating component 1 and the second rotating component 10 are respectively located on both sides of the steel plate sling 100. When both ends of the adjusting pin shaft 101 are respectively meshed and driven with a rotating component, the force on the adjusting pin shaft 101 can be made more uniform, which is more convenient for quickly and efficiently adjusting the height of the steel plate sling 100.

[0048] The coarse adjustment mechanism further includes a supporting sub-frame 4, and the rotating component further includes a rotating shaft.

[0049] A first gear 14 is coaxially arranged on the rotating shaft of the first rotating component 1, and a second gear 17 is coaxially arranged on the rotating shaft of the second rotating component 10.

[0050] Both the first gear 14 and the second gear 17 are rotatably arranged between the support frame 2 and the supporting sub-frame 4.

[0051] In an embodiment of the present application, the first rotating component 1 and the second rotating component 10 are arranged between two support frames 2, so that the two support frames 2 can provide sufficient supporting force for the rotating component; and the gear structure (including the first gear 14 and the second gear 17) for driving the rotating component to rotate is arranged between the support frame 2 and the supporting sub-frame 4, so that the support frame 2 and the supporting sub-frame 4 can provide sufficient supporting force for the gear structure. Both the support frame 2 and the supporting sub-frame 4 are arranged on the fine adjustment seat.

[0052] A first transmission gear 15 and a second transmission gear 16 are arranged between the first gear 14 and the second gear 17. The first gear 14 is meshed and driven with the first transmission gear 15, the first transmission gear 15 is meshed and driven with the second transmission gear 16, and the second transmission gear 16 is meshed and driven with the second gear 17.

[0053] In an embodiment of the present application, the first transmission gear 15 is rotatably arranged between the support frame 2 and the support sub-frame 4 through a rotating shaft, and the second transmission gear 16 is rotatably arranged between the support frame 2 and the support sub-frame 4 through a rotating shaft; by arranging the first transmission gear 15 and the second transmission gear 16 between the first gear 14 and the second gear 17, under the transmission cooperation of the first transmission gear 15 and the second transmission gear 16, the first gear 14 and the second gear 17 present opposite rotation directions, so that the sides of the first rotating assembly 1 and the second rotating assembly 10 close to the steel plate sling 100 can rotate upward or downward synchronously, enabling the steel plate sling 100 to perform height adjustment more stably.

[0054] The coarse adjustment mechanism further includes a coarse adjustment driving gear 3, and the coarse adjustment driving gear 3 is in meshing transmission with the first gear 14 or the second gear 17.

[0055] In an embodiment of the present application, the coarse adjustment driving gear 3 is rotatably arranged between the support frame 2 and the support sub-frame 4 through a rotating shaft; taking the coarse adjustment driving gear 3 driving the first gear 14 to rotate as an example, by rotating the coarse adjustment driving gear 3 to drive the first gear 14 to rotate, the first gear 14 drives the second gear 17 to rotate through the meshing transmission of the first transmission gear 15 and the second transmission gear 16, so that the first gear 14 and the second gear 17 rotate synchronously in the opposite direction, that is, driving the first rotating assembly 1 and the second rotating assembly 10 to rotate synchronously in the opposite direction.

[0056] The coarse adjustment mechanism further includes a coarse adjustment driving source 5, the coarse adjustment driving source 5 is arranged on one side of the coarse adjustment driving gear 3, and the coarse adjustment driving source 5 is in transmission connection with the coarse adjustment driving gear 3.

[0057] In an embodiment of the present application, the coarse adjustment driving source 5 is arranged on the side of the support sub-frame 4 away from the coarse adjustment driving gear 3. In other embodiments, according to the size of the coarse adjustment driving source 5, the coarse adjustment driving source 5 can also be arranged on the side of the support frame 2 away from the coarse adjustment driving gear 3.

[0058] In this embodiment, the coarse adjustment driving source 5 can be a direct driving structure such as a motor or an engine, or a composite driving structure such as a motor or an engine with a reducer, and is specifically selected according to actual engineering needs.

[0059] The rotating assembly includes two discs, and a plurality of transmission shafts 11 are arranged between the two discs; the plurality of transmission shafts 11 are circumferentially distributed on the discs; a rotating shaft is arranged at the centers of the two discs, and the rotating assembly is rotatably mounted between a pair of support frames 2 through the rotating shaft.

[0060] The fine adjustment seat includes a fine adjustment top seat 6 and a fine adjustment bottom seat 7. A double-headed stud 8 is arranged between the fine adjustment top seat 6 and the fine adjustment bottom seat 7. The double-headed stud 8 is threadedly connected to both the fine adjustment top seat 6 and the fine adjustment bottom seat 7, and the thread directions at both ends of the double-headed stud 8 are opposite.

[0061] In one embodiment of the present application, a threaded hole is provided at one end of the fine-tuning top seat 6 facing the fine-tuning base 7, and a threaded hole is also provided at one end of the fine-tuning base 7 facing the fine-tuning top seat 6, and the threads in the two threaded holes have opposite rotation directions. The top end of the stud 8 is threadedly connected to the fine-tuning top seat 6, and the bottom end of the stud 8 is threadedly connected to the fine-tuning base 7. By rotating the stud 8, the stud 8 is retracted into or extended into the fine-tuning top seat 6 and the fine-tuning base 7, thereby realizing stepless adjustment of the height of the fine-tuning seat; that is, in this adjustable sling system, the height of the steel plate sling 100 is coarsely adjusted by the coarse adjustment mechanism, and the height of the steel plate sling 100 is fine-tuned by the fine-tuning seat, thereby realizing millimeter-level precise adjustment of the height of the steel plate sling 100, greatly improving the height adjustment efficiency of the steel plate sling 100.

[0062] In this embodiment, the centers of the fine-tuning top seat 6 , the stud 8 and the fine-tuning base 7 are all provided with through holes for the steel plate sling 100 to pass through; the entire coarse adjustment mechanism is arranged on the fine-tuning top seat 6 .

[0063] A fine-tuning driven gear 9 is sleeved at the center of the stud 8, and one side of the fine-tuning driven gear 9 is meshed with a fine-tuning driving gear 12. In one embodiment of the present application, the fine-tuning driven gear 9 is driven to rotate by rotating the fine-tuning driving gear 12, so that the stud 8 rotates synchronously with the fine-tuning driven gear 9, and the height of the fine-tuning seat is adjusted, which can greatly improve the adjustment efficiency of the fine-tuning seat.

[0064] The fine-tuning seat also includes a fine-tuning driving source 13 , which is in transmission connection with the fine-tuning driving gear 12 , and the fine-tuning driving source 13 is disposed on the fine-tuning base 7 .

[0065] In one embodiment of the present application, the fine-tuning drive source 13 can be a direct drive structure such as a motor or an engine, or a composite drive structure such as a motor or an engine with a reducer, and the selection is made based on actual engineering needs.

[0066] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A bridge hanging basket adjustable sling system, the bridge hanging basket at least comprising a front crossbeam and a steel plate sling, characterized in that: The adjustable sling system includes a fine-adjustment seat and a coarse-adjustment mechanism, wherein the fine-adjustment seat is arranged above the front crossbeam, and the coarse-adjustment mechanism is arranged above the fine-adjustment seat; The steel plate sling is provided with a plurality of holes at intervals, and adjustment pins are detachably provided in the holes near the coarse adjustment mechanism on the steel plate sling; The coarse adjustment mechanism comprises: Support frames, the support frames are arranged in pairs on the fine-tuning seat; A rotating assembly, the rotating assembly is rotatably disposed between a pair of support frames, and the rotating assembly is provided with a plurality of transmission shafts distributed in a circumference; The rotating assembly rotates to drive multiple transmission shafts to mesh with multiple adjustment pins on the steel plate sling in turn, so that the transmission shafts support the adjustment pins.

2. The adjustable sling system for the bridge hanging basket according to claim 1 is characterized in that: The two ends of the adjusting pin are cantilevered on both sides of the steel plate sling; The rotating assembly is provided with two, namely a first rotating assembly and a second rotating assembly, and the first rotating assembly and the second rotating assembly are respectively meshed and driven with two ends of the same adjusting pin shaft; The first rotating component and the second rotating component rotate in opposite directions.

3. The adjustable sling system for the bridge hanging basket according to claim 2 is characterized in that: The coarse adjustment mechanism further includes a supporting sub-frame, and the rotating assembly further includes a rotating shaft; A first gear is coaxially arranged on the rotating shaft of the first rotating assembly, and a second gear is coaxially arranged on the rotating shaft of the second rotating assembly; The first gear and the second gear are both rotatably arranged between the support frame and the support sub-frame.

4. The adjustable sling system for the bridge hanging basket according to claim 3 is characterized in that: A first transmission gear and a second transmission gear are arranged between the first gear and the second gear, the first gear meshes with the first transmission gear for transmission, the first transmission gear meshes with the second transmission gear for transmission, and the second transmission gear meshes with the second gear for transmission.

5. The adjustable sling system for the bridge hanging basket according to claim 4 is characterized in that: The coarse adjustment mechanism further comprises a coarse adjustment driving gear, and the coarse adjustment driving gear is meshed with the first gear or the second gear for transmission.

6. The adjustable sling system for the bridge hanging basket according to claim 5 is characterized in that: The coarse adjustment mechanism further comprises a coarse adjustment driving source, which is arranged at one side of the coarse adjustment driving gear, and the coarse adjustment driving source is connected with the coarse adjustment driving gear by transmission.

7. The adjustable sling system for the bridge hanging basket according to claim 3 is characterized in that: The rotating assembly includes two discs, a plurality of transmission shafts are arranged between the two discs, and the plurality of transmission shafts are distributed on the discs in a circumferential manner; a rotating shaft is arranged at the center of the two discs, and the rotating assembly is rotatably mounted between a pair of support frames through the rotating shaft.

8. The adjustable sling system for the bridge hanging basket according to claim 1 is characterized in that: The fine-tuning seat comprises a fine-tuning top seat and a fine-tuning base, a stud is arranged between the fine-tuning top seat and the fine-tuning base, the stud is threadedly connected to the fine-tuning top seat and the fine-tuning base, and the threads at both ends of the stud have opposite rotation directions.

9. The adjustable sling system for the bridge hanging basket according to claim 8 is characterized in that: A fine-tuning driven gear is sleeved at the center of the stud, and a fine-tuning driving gear is meshed and driven on one side of the fine-tuning driven gear.

10. The adjustable sling system for the bridge hanging basket according to claim 9 is characterized in that: The fine-tuning seat also includes a fine-tuning driving source, which is transmission-connected to the fine-tuning active gear and is arranged on the fine-tuning base.

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