A hanging device and method for installing a basket arch

Abstract

The present invention provides a hanging device and method for installing a basket arch, which is used to connect a fixing ring of an arch rib, and includes: a bearing frame having a channel penetrating through both ends thereof, and mounting seats are provided at both ends of the channel, so that hoisting parts for hoisting the bearing frame are formed at both ends of the channel; a suspension cable disposed in the channel of the bearing frame, and both ends of the suspension cable respectively extend out of both ends of the bearing frame to form hoisting segments, and hooks are fixedly provided on both hoisting segments, and the hooks are connected to the corresponding fixing rings; an adjusting unit, which includes a slider slidably disposed in the channel of the bearing frame and a driving member disposed in the channel of the bearing frame, the driving member is connected to the slider, the slider is provided with a connecting block, and the suspension cable is fixedly connected to the connecting block. By means of the slider, the position of the suspension cable in the bearing frame is changed, and the length of the suspension cable extending out of both ends of the bearing frame is changed. During the hoisting process by the cable, the inclination angle adjustment of the arch rib can be realized through the synchronous movement of the driving member, reducing the complexity of the previous construction operations and improving the work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a basket arch installation hanger and a method thereof. Background Art

[0002] Basket arch bridges are generally used to cross rivers and valleys with large spans. They are a type of bridge structure with strong spanning capacity, beautiful appearance, and increasing application. The arch ribs of the bridge, as the most important load-bearing structure of this type of bridge structure, are generally installed by segmented hoisting. Commonly used hoisting equipment cannot meet construction needs, so cable cranes are usually used for installation. Since the arch ribs are arc-shaped, it is difficult to control their position in the air by segmented hoisting, which makes it particularly difficult to ensure their precise positioning in the air.

[0003] For example, Chinese patent "CN107338733B" discloses "a hoisting device and hoisting method for adjusting and positioning the aerial posture of steel box arch ribs". This hoisting device is independently controlled by a single lifting point, including the lifting height of the jack and the rotation of the shaft of the hoisting mechanism, which can adjust the vertical tilt angle; the angle of the steel box arch rib can be more accurately fine-tuned by rotating the shaft and the lifting lug of the steel box arch rib, reducing the repeated adjustment workload caused by equipment manufacturing errors and insufficient aerial posture accuracy during installation during traditional hoisting, and ensuring rapid and accurate positioning of the steel box arch rib during installation. When the above-mentioned hoisting device is working, it is necessary to use a hand winch to assist in the installation of the steel strand, and the hand winch needs to be disassembled after installation. The pre-construction operations are relatively cumbersome, and the equipment used is large, and the operation and control are inconvenient. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a basket arch installation sling and method, which solves the problem of the arch rib lifting device in the prior art being difficult to operate.

[0005] According to an embodiment of the present invention, a basket arch mounting sling, used for connecting a fixing ring of an arch rib, comprises:

[0006] The carrier frame has a channel running through both ends thereof, and mounting seats are provided at both ends of the channel so that both ends of the channel form a lifting portion for lifting the carrier frame;

[0007] A sling is provided in the channel of the carrier frame, and both ends of the sling extend out of the two ends of the carrier frame to form a lifting section, and both lifting sections are fixed with a hook, which is connected to the corresponding fixing ring;

[0008] The adjusting unit includes a slider slidably arranged in the carrier channel and a driving member arranged in the carrier channel, the driving member is connected to the slider, the slider is provided with a connecting block, and the sling is fixedly connected to the connecting block;

[0009] Wherein, when the driving member slides the slider along the channel of the bearing frame, the sling follows the slider to slide synchronously, so as to change the lengths of the two hoisting sections and adjust the inclination angle of the arch rib.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In this solution, when hoisting the arch rib on the deck or on the shore, by respectively corresponding the two hoisting sections of the sling to the two fixing rings of the arch rib and installing the sling rings of the hoisting sections on the fixing rings, during the hoisting process of the cable crane, the two ends of the arch rib can be lifted simultaneously through the two ends of the sling, so that the arch rib is separated from the deck or the ground. At the same time, with the cooperation of the driving member, the slider can be driven to slide along the channel of the bearing frame, so as to change the position of the sling in the bearing frame through the slider, and further change the lengths of the sling extending from both ends of the bearing frame. During the hoisting process of the cable crane, the inclination angle adjustment of the arch rib can be realized through the synchronous movement of the driving member, reducing the complexity of the pre-construction operations, improving the work efficiency, and only using one driving member to adjust the arch rib, reducing the cost.

[0012] Preferably, the driving member is a driving jack, the bearing frame is provided with an installation groove, the driving jack is arranged in the installation groove, and the telescopic end of the driving jack extends along the channel of the bearing frame and is fixedly connected to the slider.

[0013] Preferably, convex blocks are fixedly arranged at both ends of the bearing frame, first guide wheels are rotatably arranged on the convex blocks, and the sling is arranged in the outer circular groove of the first guide wheels.

[0014] Preferably, it further includes two sliding seats. A limiting groove is formed on the side surface of the bearing frame along its length direction, the sliding seats are slidably clamped in the limiting groove, a guide seat is arranged at the bottom end of the sliding seats, the hoisting section of the sling passes through the guide seat, and a transmission member is further arranged at the bottom end of the bearing frame. The transmission member is connected between the two sliding seats and is used to control the distance between the two sliding seats.

[0015] Preferably, the transmission member is a two-way jack, a fixed seat is arranged at the bottom end of the bearing frame, the two-way jack is arranged on the fixed seat, and the two telescopic ends of the two-way jack are respectively connected to the two sliding seats.

[0016] Preferably, a second guide wheel is rotatably arranged on the guide seat, and the hoisting section of the sling is arranged in the outer circular groove of the second guide wheel.

[0017] Preferably, a sliding groove is formed on the inner side of the channel of the bearing frame, and the slider slides in the sliding groove.

[0018] Preferably, sling rings are fixedly arranged on both mounting seats.

[0019] According to an embodiment of the present invention, a method for installing a basket arch includes a hoisting tool for installing a basket arch, and further includes the following steps:

[0020] S1: According to the construction requirements, before construction, use simulation software to simulate and loft the arch rib to determine the installation inclination requirements of the arch rib;

[0021] S2: Install the lifting hook of the cable crane on the two lifting parts of the bearing frame and keep the bearing frame horizontal. Install the sling extending from both ends of the bearing frame to the fixing ring of the arch rib through the hooks provided thereon. The cable crane hoists to lift the arch rib off the ground;

[0022] S3: According to the installation inclination requirements of the arch rib, start the driving member to change the position of the slider on the bearing frame, so as to lift and lower the two ends of the arch rib respectively through the two lifting sections of the sling until the arch rib meets the installation requirements;

[0023] S4: The cable crane continues to hoist and transports the arch rib to the designated installation position, and disconnect the hook from the fixing ring until the arch rib is installed;

[0024] S5: Repeat S2 - S4 to complete the installation of all arch ribs.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] By using simulation software to pre - determine the installation inclination requirements of the arch rib, it ensures that the operation can be carried out according to accurate design parameters during actual construction. At the same time, the driving member is used to adjust the position of the slider to control the length of the sling, so as to achieve precise lifting and lowering of the two ends of the arch rib, enabling the arch rib to quickly reach the required installation angle, reducing the time cost of repeated adjustment, and greatly improving the construction efficiency.

[0027] Preferably, in S2, before the hook is connected to the fixing ring, ensure that the lengths of the two lifting sections of the sling are equal. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of hoisting an arch rib with one sling in an embodiment of the present invention.

[0030] Figure 2 It is a schematic structural diagram of hoisting an arch rib with two slings in an embodiment of the present invention.

[0031] Figure 3 It is a schematic structural diagram of hoisting an arch rib with four slings in an embodiment of the present invention.

[0032] Figure 4 This is a schematic structural diagram of the spreader before lifting the arch rib in the embodiment of the present invention.

[0033] Figure 5 This is a schematic structural diagram of the spreader after lifting the arch rib in the embodiment of the present invention.

[0034] Figure 6 This is a schematic cross-sectional structural diagram of the carrier in the embodiment of the present invention.

[0035] In the figure:

[0036] 1. Arch rib; 101. Fixed ring; 2. Carrier; 201. Mounting seat; 202. Limiting groove; 203. Fixed seat; 204. Protrusion; 205. Slide groove; 206. Installation groove; 3. Suspension cable; 301. Hook; 4. Hoisting ring; 5. Two-way jack; 6. First guide wheel; 7. Slide block; 701. Guide seat; 702. Second guide wheel; 8. Driving jack; 9. Slide block; 901. Connecting block.

[0037] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0038] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, terms such as "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] The technical solutions in the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] As Figures 1 to 6 shown, the embodiment of the present invention provides a suspension spreader for basket arch installation, which is used to connect the fixed ring 101 of the arch rib 1 and includes:

[0041] A carrier 2 having a channel penetrating through both ends thereof, and mounting seats 201 are provided at both ends of the channel, so that hoisting parts for hoisting the carrier 2 are formed at both ends of the channel;

[0042] A suspension cable 3 is arranged in the channel of the carrier 2, and both ends of the suspension cable 3 extend out of both ends of the carrier 2 to form hoisting sections, and hooks 301 are fixedly provided at both hoisting sections, and the hooks 301 are connected to the corresponding fixed rings 101;

[0043] Adjusting unit, including a slider 9 slidably disposed in the channel of the carrier 2 and a driving member disposed in the channel of the carrier 2. The driving member is connected to the slider 9. The slider 9 is provided with a connecting block 901, and the sling 3 is fixedly connected to the connecting block 901;

[0044] Wherein, when the driving member makes the slider 9 slide along the channel of the carrier 2, the sling 3 follows the slider 9 to slide synchronously, so as to change the lengths of the two hoisting sections and adjust the inclination angle of the arch rib 1.

[0045] In an embodiment of the present invention, before construction, the arch rib 1 is placed on the deck of the transport ship or the shore of the construction site. After installing equipment such as a cable crane before the pre-construction sequence, by installing the sling of the cable crane at the two lifting parts at both ends of the carrier 2, when the cable crane hoists and rises, it simultaneously carries the carrier 2 to lift. During the lifting process of the carrier 2, according to the center of the carrier 2, ensure that the carrier 2 always remains horizontal. When the carrier 2 is moved to the position of the arch rib by the cable crane, the slider 9 in the adjusting unit is in the initial position, that is, the lengths of the two ends of the sling 3 extending out of the carrier 2 are the same. At the same time, according to the simulated lofting of the arch rib, determine the installation inclination angle of the arch rib and the center and center position of the arch rib 1 itself, so as to embed two corresponding fixing rings 101 at both ends of the arch rib, and install the hooks 301 at both ends of the sling 3 into the corresponding two fixing rings 101 to realize the connection between the sling 3 and the arch rib 1. The hook 301 adopts a conventional detachable structure, and the connection and disassembly of the hook 301 and the fixing ring 101 can be completed by pressing to open the opening of the hook 301 or by using a screw to open and close the opening of the hook 301.

[0046] When preparing for hoisting, as Figure 4 shown, both hoisting sections of the sling 3 are in a straightened state. Taking the two hoisting sections of the sling 3 as the lengths of H1 and H2 respectively, when tightened, the length of H1 and the length of H2 are equal. When controlling the cable crane to hoist again, the driving member in the adjusting unit can be moved synchronously, so that the slider 9 slides along the channel of the carrier 2. Since the arch rib 1 is already in the air at this time, both hoisting sections will be affected by the gravity of the arch rib 1. When the slider 9 drives the sling 3 to move on the carrier 2, as Figure 5 shown, it will cause the left-end hoisting section of the sling 3 to elongate due to gravity, and the right-end hoisting section will be shortened by the tension of the slider 9, making H1 > H2. The two hoisting sections move synchronously, and the arch rib 1 rotates around point A, so as to adjust the inclination angle of the arch rib 1 until the specified inclination angle α is reached, then stop adjusting the slider 9, ensure the angle of the arch rib 1 to continue to be lifted to the specified installation position, without the need to continue adjusting the arch rib at high altitude and without manual intervention. Moreover, when using a single sling 3 for synchronous adjustment at both ends, the adjustment stroke is shorter, the time spent is less, and the entire construction period is further reduced. Among them, the movement and stop of the slider 9 are both carried out by the driving member. The driving member can be electric, hydraulic, oil pressure telescopic control, or screw control.

[0047] In order to ensure the stability during the hoisting of the arch rib 1, two slings can be placed at intervals on both sides of the arch rib 1, and four fixing rings 101 are pre-installed on the arch rib 1, which increases the contact area during its hoisting. The adjusting units of the two slings are adjusted synchronously to ensure the stability of the transportation, adjustment and installation of the arch rib 1.

[0048] During the construction of some shaped bridges, it is necessary to avoid the arch rib 1 having not only an inclination in the length direction but also a deflection in the width direction. For example, Figure 3 As shown, when the heights of the cable cranes are the same, two slings can be used to hoist the arch rib 1 according to the above method, and the inclination of the arch rib 1 is adjusted. Then, two slings are selected to be located at the top of the working slings and perpendicular to the working slings. Among them, two slings are located in the L2 area, and two slings are located in the L1 area. The two slings in the L1 area are connected to the cable crane and are guaranteed to be parallel and at the same height. The two slings in the L2 area are connected between the arch rib 1 and the slings in the L1 area. The two slings in the L1 area are adjusted synchronously. When the suspension ropes 3 of the slings in the L1 area are moved and adjusted, the heights of the two slings in the L2 area are conveniently deviated, so that the arch rib 1 deflects sideways, thereby realizing the deflection adjustment of the arch rib 1, making this solution have more usage scenarios and stronger versatility.

[0049] Specifically, as Figure 6 shown, the driving member is a driving jack 8. The bearing frame 2 is provided with an installation groove 206. The driving jack 8 is arranged in the installation groove 206, and the telescopic end of the driving jack 8 extends along the channel of the bearing frame 2 and is fixedly connected to the slider 9.

[0050] In order to simplify the structure and achieve the same adjustment work, the driving member is a driving jack 8. The driving jack 8 is horizontally installed in the installation groove 206, and the telescopic end of the driving jack 8 is fixedly connected to the slider 9. By providing a stable linear motion to the slider 9 through the driving jack 8, the precise control of the position of the slider 9 can be realized, making the length adjustment of the suspension rope 3 more accurate, thereby improving the accuracy of the inclination adjustment of the arch rib 1. At the same time, the driving jack 8 is arranged in the installation groove 206 of the bearing frame 2, which not only saves space but also ensures the compactness and aesthetics of the overall structure.

[0051] As Figure 4As shown in the figure, bump 204 is fixedly provided at both ends of the carrier 2. The first guide wheel 6 is rotatably provided on the bump 204. The sling 3 is arranged in the outer circular groove of the first guide wheel 6. Under the action of the first guide wheel 6, the part of the sling 3 extending out of the carrier 2 is wound around the first guide wheel 6, reducing the direct friction between the sling 3 and the carrier 2, reducing the wear speed of the sling 3, and reducing the heat generated by friction. At the same time, the first guide wheel 6 ensures that the sling 3 maintains a correct path during the sliding process, avoiding the risk of the sling 3 shifting or winding.

[0052] Based on the above solution, as Figure 4 shown, it further includes two sliding seats 7. A limiting groove 202 is opened on the side surface of the carrier 2 along its length direction. The sliding seat 7 is slidably clamped in the limiting groove 202. A guide seat 701 is provided at the bottom end of the sliding seat 7. The hoisting section of the sling 3 passes through the guide seat 701. A transmission member is further provided at the bottom end of the carrier 2. The transmission member is connected between the two sliding seats 7 and is used to control the distance between the two sliding seats 7.

[0053] When installing the sling 3, when the sling 3 is wound around the first guide wheel 6, the sling 3 passes through the bottom of the first guide wheel 6 and is placed on the guide seat 701, so that the sling 3 moves vertically downward after passing through the guide seat 701. When the transmission member moves, it can synchronously push the two sliding seats 7 to slide on the carrier 2, and make the two sliding seats 7 approach or move away from each other, thereby changing the positions of the two hooks 301, suitable for hoisting arch ribs 1 of different lengths, increasing the applicability.

[0054] Specifically, the transmission member is a two-way jack 5. A fixed seat 203 is provided at the bottom end of the carrier 2. The two-way jack 5 is arranged on the fixed seat 203. The two telescopic ends of the two-way jack 5 are respectively connected to the two sliding seats 7. The two-way jack 5 is installed on the fixed seat 203 at the bottom end of the carrier 2, and the two sliding seats 7 are respectively connected to the two telescopic ends of the two-way jack 5. When the two-way jack 5 works, it can synchronously drive the two sliding seats 7 to approach or move away from each other. When the two-way jack 5 stops, the positioning of the sliding seat 7 can be realized.

[0055] Specifically, as Figure 4 shown, a second guide wheel 702 is rotatably provided on the guide seat 701. The hoisting section of the sling 3 is arranged in the outer circular groove of the second guide wheel 702. The outer circular groove of the second guide wheel 702 can effectively guide and support the sling 3, reducing the direct friction between the sling 3 and the guide seat 701, thereby extending the service life of the sling 3.

[0056] Specifically, as Figure 6As shown, a chute 205 is provided inside the channel of the carrier 2, and the slider 9 is slidably arranged in the chute 205; the chute 205 limits the slider 9, provides an accurate guiding path for the slider 9, ensures the linearity and stability of the slider 9 during movement, and at the same time bears the slider 9, ensuring that the driving jack 8 will not be subjected to excessive radial forces and improving the service life of the driving jack 8.

[0057] Specifically, as Figure 1 shown, lifting rings 4 are fixedly provided on both mounting seats 201; the lifting rings 4 provide standardized connection points, enabling the lifting hook of the cable crane to be conveniently connected to the carrier 2.

[0058] The embodiment of the present invention also proposes a method for installing a basket arch, including the above-mentioned basket arch installation sling, and further includes the following steps:

[0059] S1: According to the construction requirements, before construction, use simulation software to simulate the lofting of the arch rib 1 to determine the installation inclination requirements of the arch rib 1;

[0060] S2: Install the lifting hook of the cable crane on the two lifting parts of the carrier 2, and keep the carrier 2 horizontal. Install the suspension cables 3 extending from both ends of the carrier 2 to the fixing rings 101 of the arch rib 1 through the hooks 301 provided thereon, and the cable crane lifts the arch rib 1 into the air;

[0061] S3: According to the installation inclination requirements of the arch rib 1, start the driving member to change the position of the slider 9 on the carrier 2, so as to lift and lower the two ends of the arch rib 1 respectively through the two lifting sections of the suspension cable 3 until the arch rib 1 meets the installation requirements;

[0062] S4: The cable crane continues to lift and transports the arch rib 1 to the designated installation position, and disconnects the hook 301 from the fixing ring 101 until the installation of the arch rib 1 is completed;

[0063] S5: Repeat S2 - S4 to complete the installation of all arch ribs 1.

[0064] Specifically, in S2, before the hook 301 is connected to the fixing ring 101, ensuring that the lengths of the two lifting sections of the suspension cable 3 are equal can ensure that after the arch rib 1 is lifted, the arch rib 1 is in a state of horizontal stability.

[0065] In the above steps, the installation inclination requirements of the arch rib 1 are determined in advance through simulation software, ensuring that operations can be carried out according to accurate design parameters during actual construction. At the same time, the length of the suspension cable 3 is controlled by adjusting the position of the slider using the driving member, thereby realizing the precise lifting and lowering of the two ends of the arch rib 1, enabling the arch rib 1 to quickly reach the required installation angle, reducing the time cost of repeated adjustment, improving the construction efficiency, and the synchronous lowering and lifting of the arch rib 1 can significantly reduce the adjustment time and greatly improve the efficiency.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A hanging device for installing a basket arch, which is used to connect a fixing ring (101) of an arch rib (1), and is characterized in that, Comprising: A carrier frame (2) having a channel passing through both ends thereof, and mounting seats (201) are provided at both ends of the channel, so that hoisting portions for hoisting the carrier frame (2) are formed at both ends of the channel; A sling (3) is provided in the channel of the carrier frame (2), and both ends of the sling (3) extend out of both ends of the carrier frame (2) to form hoisting segments, and hooks (301) are fixedly provided at both hoisting segments, and the hooks (301) are connected to the corresponding fixing rings (101); An adjusting unit includes a slider (9) slidably provided in the channel of the carrier frame (2) and a driving member provided in the channel of the carrier frame (2), the driving member is connected to the slider (9), the slider (9) is provided with a connecting block (901), and the sling (3) is fixedly connected to the connecting block (901); Wherein, when the driving member makes the slider (9) slide along the channel of the carrier frame (2), the sling (3) slides synchronously with the slider (9) to change the lengths of the two hoisting segments and adjust the inclination angle of the arch rib (1); It further includes two sliding seats (7), a limiting groove (202) is formed on the side surface of the carrier frame (2) along its length direction, the sliding seats (7) are slidably clamped in the limiting groove (202), a guiding seat (701) is provided at the bottom end of the sliding seat (7), the hoisting segment of the sling (3) passes through the guiding seat (701), and a transmission member is further provided at the bottom end of the carrier frame (2), and the transmission member is connected between the two sliding seats (7) for controlling the distance between the two sliding seats (7).

2. The lifting sling for installing a basket arch according to claim 1, characterized in that, The driving member is a driving jack (8), the carrier frame (2) is provided with a mounting groove (206), the driving jack (8) is provided in the mounting groove (206), and the telescopic end of the driving jack (8) extends along the channel of the carrier frame (2) and is fixedly connected to the slider (9).

3. The lifting sling for installing a basket arch according to claim 1, characterized in that Convex blocks (204) are fixedly provided at both ends of the carrier frame (2), and first guiding wheels (6) are rotatably provided on the convex blocks (204), and the sling (3) is provided in the outer circular groove of the first guiding wheel (6).

4. A lifting sling for the installation of a basket arch according to claim 1, characterized in that, The transmission member is a two-way jack (5), a fixed seat (203) is provided at the bottom end of the carrier frame (2), the two-way jack (5) is provided in the fixed seat (203), and the two telescopic ends of the two-way jack (5) are respectively connected to the two sliding seats (7).

5. A hanging device for installing a basket arch according to claim 1, characterized in that A second guiding wheel (702) is rotatably provided on the guiding seat (701), and the hoisting segment of the sling (3) is provided in the outer circular groove of the second guiding wheel (702).

6. The hanging device for installing a basket arch according to claim 1, wherein A sliding groove (205) is formed on the inner side of the channel of the carrier frame (2), and the slider (9) is slidably provided in the sliding groove (205).

7. The lifting sling for installing a basket arch according to claim 1, characterized in that, Hoisting rings (4) are fixedly provided on both of the mounting seats (201).

8. A method for installing a basket arch, characterized in that, Including a basket arch installation sling according to any one of claims 1-7, further Including the following steps: S1: According to the construction requirements, before construction, use simulation software to simulate the lofting of the arch rib (1) to determine the installation inclination angle requirements of the arch rib (1); S2: Install the lifting hook of the cable crane on the two hoisting parts of the bearing frame (2), keep the bearing frame (2) horizontal, and install the sling (3) extending from both ends of the bearing frame (2) to the fixed ring (101) of the arch rib (1) through the hook (301) provided thereon. Then, the cable crane hoists the arch rib (1) into the air; S3: According to the installation inclination requirement of the arch rib (1), start the driving member to change the position of the slider (9) on the bearing frame (2), so as to lift and lower the two ends of the arch rib (1) respectively through the two hoisting sections of the sling (3) until the arch rib (1) meets the installation requirements; S4: The cable crane continues to hoist and transports the arch rib (1) to the designated installation position. After the arch rib (1) is installed, disconnect the hook (301) from the fixed ring (101); S5: Repeat S2 - S4 to complete the installation of all arch ribs (1).

9. The lifting sling for installing a basket arch according to claim 8, characterized in that, In S2, before the hook (301) is connected to the fixed ring (101), ensure that the lengths of the two hoisting sections of the sling (3) are equal.

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