A flexible sling with adjustable load attitude and a hoisting method

Abstract

The present invention belongs to the technical field of hoisting equipment, and particularly relates to a flexible sling with adjustable load attitude and a hoisting method. The present invention includes a sling assembly, a hydraulic cylinder, a hanger, a dynamic biaxial inclination sensor, a pump station and a control center; the sling assembly has at least two limbs, one end of each sling assembly is a free end, and the other end is hinged on the upper surface of the hanger with the center of the hanger as the center of symmetry; the number of hydraulic cylinders matches the number of limbs of the sling assembly; each hydraulic cylinder is respectively hinged on the upper surface of the hanger and located on the connection line between the hinge point of the corresponding sling assembly and the hanger and the center of the hanger, and the output end of the hydraulic cylinder is hinged on the sling assembly of the corresponding limb; the pump station and the control center are connected to the hanger; the dynamic biaxial inclination sensor is connected to the load; the dynamic biaxial inclination sensor is electrically connected to the pump station and the control center. When hoisting the load, the present invention does not require adding slings, and the sling length can be adjusted by controlling the hydraulic cylinder, so as to achieve the purpose of accurately adjusting the load attitude.

Description

Technical Field

[0001] The invention belongs to the technical field of hoisting equipment, and particularly relates to a flexible sling with adjustable load attitude and a hoisting method. Background Technique

[0002] When using hoisting equipment such as truck cranes, crawler cranes, and floating cranes for hoisting large pieces, flexible slings such as steel wires, chains, and fiber ropes are usually used to connect the load and the hook. According to the different shapes of the load, structures such as single-leg slings, double-leg slings, and triple-leg slings are adopted.

[0003] When hoisting in this way, the attitude of the load is usually adjusted by slings of different lengths. When hoisting loads with different shapes and installation postures, it is necessary to frequently adjust the length of the slings, and the demand for slings is large, time-consuming and laborious. Since the elastic modulus of the sling is small, the length of the sling will change after being stressed, and there are also errors in the length of the sling during the manufacturing process. In construction scenarios where precise adjustment of the load attitude is required, it is difficult to use this hoisting method. Summary of the Invention

[0004] The invention provides a flexible sling with adjustable load attitude and a hoisting method, aiming to provide a sling and a method with adjustable sling length and capable of precisely controlling the load attitude.

[0005] To achieve the above object, the technical solution adopted by the invention is:

[0006] A flexible sling with adjustable load attitude includes a sling assembly, a hydraulic cylinder, a suspension bracket, a dynamic biaxial inclination sensor, a pumping station and a control center; the sling assembly has at least two legs, one end of each leg of the sling assembly is a free end, and the other end is hinged to the upper surface of the suspension bracket with the center of the suspension bracket as the center of symmetry; the number of hydraulic cylinders matches the number of legs of the sling assembly; each hydraulic cylinder is respectively hinged to the upper surface of the suspension bracket and is located on the connection line between the hinge point of the corresponding leg of the sling assembly and the suspension bracket and the center of the suspension bracket, and the output end of the hydraulic cylinder is hinged to the corresponding sling assembly; the pumping station and the control center are connected to the suspension bracket; the dynamic biaxial inclination sensor is placed on the load; the hydraulic cylinder is connected to the pumping station and the control center; there is an electrical signal connection between the dynamic biaxial inclination sensor and the pumping station and the control center, which is used to control the extension and retraction of different hydraulic cylinders and adjust the levelness of the load.

[0007] The sling assembly includes a hinge member and two sections of slings; the two sections of slings are connected by the hinge member; the hinge member is hinged to the output end of the hydraulic cylinder.

[0008] The hinge member is an integral structure composed of two support rods; the two support rods are arranged at an angle; a hinge hole is respectively opened at the outer ends of the two support rods, and a hinge hole is opened at the connection of the two support rods.

[0009] The hinge is a triangular integral structure formed by three support rods; a hinge hole is respectively opened at each of the three corners of the triangle.

[0010] The sling assembly is provided with four limbs; the four-limb sling assembly is hinged on the upper surface of the hanger in a rectangular matrix.

[0011] The hanger is a frame integral structure that is centrosymmetric and axisymmetric and is composed of cross bars, vertical bars and diagonal bars; the hanger is symmetrically connected with suspension rods for connecting with the suspended object.

[0012] There are two cross bars, five vertical bars and two diagonal bars; the two cross bars are arranged in parallel; the five vertical bars are connected to the two cross bars in parallel and are perpendicular to the cross bars; one of the vertical bars is connected to the central position of the cross bar, and two vertical bars are symmetrically and spacedly connected on both sides thereof; the two cross bars and the vertical bars adjacent to both sides of the vertical bar at the central position form a rectangle, and two diagonal bars are obliquely connected on the diagonal of the rectangle, and one limb of the sling assembly is hinged on the upper surface of each of the four corners of the rectangle; each end of each diagonal bar is respectively hinged with a hydraulic cylinder, and the axis line of the hydraulic cylinder coincides with the axis line of the diagonal bar.

[0013] A lifting method for a flexible lifting tool, using a flexible lifting tool with adjustable posture of the suspended object, includes the following steps:

[0014] Step 1: Connect the suspended object to the hanger;

[0015] Step 2: Connect the dynamic biaxial inclination sensor to the upper surface of the suspended object;

[0016] Step 3: Connect the free ends of the multi-limb sling assembly to the hook of the crane, and the crane lifts;

[0017] Step 4: The dynamic biaxial inclination sensor measures the inclination angle of the suspended object and sends the inclination angle data to the pump station and the control center; the corresponding hydraulic cylinders are controlled to extend or retract through the pump station and the control center, so as to change the length of the sling in the sling assembly corresponding to the hinged hydraulic cylinder until the suspended object is adjusted to a horizontal state.

[0018] Beneficial effects:

[0019] (1) The present invention is organically composed of a sling assembly, a hydraulic cylinder, a hanger, a dynamic biaxial inclination sensor, a pump station and a control center. When hoisting a suspended object, the present invention does not need to add a sling, and only by controlling the extension or retraction of the hydraulic cylinder, the adjustment of the sling length can be realized, which is simple, convenient and easy to implement.

[0020] (2) In the present invention, the sling is designed to be in two sections. The two sections of the sling are connected by a hinge member, and the output end of the hydraulic cylinder is hinged to this hinge member. By extending or retracting the hydraulic cylinder, the sling in a straight line in its original position is bent, thus achieving the purpose of changing the length of the sling, which saves time and effort.

[0021] (3) Through the cooperation of the dynamic biaxial inclination sensor with the pumping station and the control center in the present invention, the adjustment accuracy is greatly improved, thus achieving the purpose of accurately adjusting the attitude of the lifted object.

[0022] (4) The present invention can use slings with different numbers of limbs according to the different shapes of the lifted object, expanding its scope of application.

[0023] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and to be implemented in accordance with the content of the description, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of the flexible lifting device in the present invention.

[0026] Figure 2 It is a plane structure diagram of the lifting frame in the flexible lifting device of the present invention.

[0027] Figure 3 It is a schematic structural diagram of the hinge member in the flexible lifting device of the present invention Figure 1 .

[0028] Figure 4 It is a schematic structural diagram of the hinge member in the flexible lifting device of the present invention Figure 2 .

[0029] Figure 5 It is a schematic diagram of the flexible lifting device of the present invention when hoisting a precast concrete beam.

[0030] Figure 6 It is a schematic diagram of the flexible lifting device of the present invention when using one of the hinge members to lift an object in a horizontal state.

[0031] Figure 7 It is Figure 6 a schematic diagram of the adjusted state.

[0032] Figure 8This is a schematic diagram of the flexible sling of the present invention when lifting an object with another hinge piece in a horizontal state.

[0033] Figure 9 It is Figure 8 A schematic diagram of the adjusted state.

[0034] Figure 10 This is a schematic diagram of the structure of the sling assembly in the present invention when it adopts three limbs.

[0035] In the figure: 1. sling assembly; 2. hydraulic cylinder; 3. hanging frame; 4. hanging rod; 5. hinge piece; 6. cross bar; 7. vertical bar; 8. inclined bar; 9. lifted object; 10. hook; 11. dynamic biaxial inclination sensor; 12. pump station and control center; 13. crawler crane; 14. precast concrete beam; 15. flexible sling with adjustable lifted object attitude; 16. first hydraulic cylinder; 17. second hydraulic cylinder; 18. first hinge point; 19. second hinge point; 20. third hinge point; 21. fourth hinge point; 22. fifth hinge point. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1:

[0038] According to Figures 1 - 9 A flexible sling with adjustable lifted object attitude as shown, including a sling assembly 1, a hydraulic cylinder 2, a hanging frame 3, a dynamic biaxial inclination sensor 11 and a pump station and control center 12; at least two limbs are provided for the sling assembly 1, one end of each limb of the sling assembly 1 is a free end, and the other end is hinged on the upper surface of the hanging frame 3 with the center of the hanging frame 3 as the symmetry center; the number of the hydraulic cylinders 2 matches the number of limbs of the sling assembly 1; each of the hydraulic cylinders 2 is respectively hinged on the upper surface of the hanging frame 3 and is located on the connection line between the hinge point of the corresponding limb of the sling assembly 1 and the hanging frame 3 and the center of the hanging frame 3, and the output end of the hydraulic cylinder 2 is hinged on the corresponding limb of the sling assembly 1; the pump station and control center 12 is connected to the hanging frame 3; the dynamic biaxial inclination sensor 11 is connected to the lifted object 9; the hydraulic cylinder 2 is connected to the pump station and control center 12; an electrical signal connection is provided between the dynamic biaxial inclination sensor 11 and the pump station and control center 12, which is used to control the extension and retraction of different hydraulic cylinders 2 and adjust the levelness of the lifted object 9.

[0039] During actual use, first connect the suspended load 9 to the hanging bracket 3, and connect the dynamic biaxial inclination sensor 11 to the upper surface of the suspended load 9; then, connect the free end of the multi-leg sling assembly 1 to the hook 10 of the crane, and the crane lifts the load; the dynamic biaxial inclination sensor 11 measures the inclination angle of the suspended load 9 and sends the inclination angle data to the pump station and control center 12; the pump station and control center 12 control the corresponding hydraulic cylinders 2 to extend or retract, changing the length of the sling in the sling assembly 1 hinged to the hydraulic cylinder 2 until the suspended load 9 is adjusted to a horizontal state.

[0040] The adjustment principle of the present invention is as follows:

[0041] The present invention provides a dynamic biaxial inclination sensor 11 on the suspended load 9. The dynamic biaxial inclination sensor 11 measures the inclination data of the suspended load 9; the pump station and control center 12 adjust the extension or retraction of the hydraulic cylinder 2 based on the obtained inclination data, thereby adjusting the sling length, achieving the adjustment of the sling length, and thus achieving the purpose of adjusting the angle of the suspended load 9.

[0042] In the pump station and control center 12 in this embodiment, the pump stations are respectively connected to each hydraulic cylinder 2 for supplying oil and returning oil to the hydraulic cylinder 2; the control center in the pump station and control center 12 uses existing technologies, and at least includes a signal receiving module, a signal sending module, and a calculation module. The signal receiving module is electrically connected to the dynamic biaxial inclination sensor 11 for receiving the inclination angle data of the suspended load 9 obtained by the dynamic biaxial inclination sensor 11; the calculation module is electrically connected to the signal receiving module and the pump station respectively for data comparison, and sends the corresponding action instructions to the pump station through the signal sending module to supply oil or return oil to the corresponding hydraulic cylinder 2, realizing the adjustment of the sling length.

[0043] The present invention adjusts at the hinge point position through the hydraulic cylinder 2, with a large adjustment weight, suitable for heavy lifting.

[0044] The dynamic biaxial inclination sensor 11 in this embodiment uses existing technologies.

[0045] Embodiment Two:

[0046] According to Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7 shown in a flexible sling with adjustable attitude of the suspended load, the difference from Embodiment One is that: the sling assembly 1 includes a hinge member 5 and a sling; the hinge member 5 is connected to the lower end of the sling; the hinge member 5 is hinged to the output end of the hydraulic cylinder 2.

[0047] Furthermore, the hinge member 5 is a triangular integral structure formed by three support rods; a hinge hole is respectively opened at each of the three corners of the triangle, one of the hinge holes is hinged to the bottom end of the sling, another hinge hole is hinged to the output end of the hydraulic cylinder 2, and the third hinge hole is hinged to the hanging bracket 3.

[0048] The specific process of adjusting the angle of the suspended object 9 by using the hinge member 5 of this technical solution is as follows:

[0049] When the suspended object 9 is in a horizontal state, as Figure 6 shown.

[0050] When it is necessary to adjust the attitude of the suspended object 9, the extended length of the first hydraulic cylinder 16 in the flexible sling 15 with adjustable suspended object attitude increases, and the hinge member 5 of the limb sling assembly 1 corresponding to the first hydraulic cylinder 16 moves outward from the sling, and the hinge point hinged to the hanging bracket 3 moves downward. The second hydraulic cylinder 17 remains stationary, so that the distance between the hook 10 and the hinge point between the sling and the hanging bracket 3 is shortened (equivalent to the shortening of the left sling length), and the left side of the suspended object 9 is raised, as Figure 7 .

[0051] Embodiment III:

[0052] According to Figure 1 , Figure 3 , Figure 4 , Figures 8 - 10 shown, a flexible sling with adjustable suspended object attitude, the difference from Embodiment I is that: the hinge member 5 is an integral structure composed of two support rods; the two support rods are arranged at an angle; a hinge hole is respectively opened at the outer ends of the two support rods, and a hinge hole is opened at the connection of the two support rods.

[0053] The specific process of adjusting the angle of the suspended object by using the hinge member 5 of this technical solution is as follows:

[0054] When the suspended object 9 is in a horizontal state, as Figure 8 shown. At this time, the fifth hinge point 22, the third hinge point 20, and the first hinge point 18 are always on the same straight line. The connection structure between the third hinge point 20, the second hinge point 19, and the first hinge point 18 belongs to a completely tensioned structure, and the structure is lighter.

[0055] When adjusting the attitude of the suspended object 9, the extended length of the first hydraulic cylinder 16 in the flexible sling 15 with adjustable suspended object attitude increases, and the second hinge point 19 at the hinge 5 of the limb sling assembly 1 corresponding to the first hydraulic cylinder 16 moves outward from the sling. The vertical projection point of the hook 10 is at the center position of the suspension bracket 3, and the first hinge point 18 and the fourth hinge point 21 of the same limb flexible sling are on a straight line with the hook projection point. The projection line of the axis of the hydraulic cylinder 2 on the suspension bracket 3 is collinear with the connection line of the hook projection point and the projection point of the first hinge point 18, ensuring that the fifth hinge point 22 and the hydraulic cylinder 2 only bear axial forces and preventing the structure from being twisted. As Figure 9 shown.

[0056] In actual use, each limb sling is added with a hinge. When adjusting the angle of the suspended object, the output end of the corresponding hydraulic cylinder 2 is extended or retracted, so that the originally straight sling assembly 1 becomes a broken line, thereby changing its length, and finally achieving the purpose of changing the attitude of the suspended object 9.

[0057] In specific applications, the position of the connection point between the present invention and the suspended object 9 is determined by the shape of the suspended object 9, and the first hinge point 18 is as close as possible to the connection point between the suspension bracket 3 and the suspended object 9. The angle between the two struts is designed from the perspective of reasonable structure. If the sling assembly 1 adopts a three-limb design, the angle formed by the two struts is 120°, as Figure 10 shown; similarly, if the sling assembly 1 adopts a five-limb sling design, the angle between the two struts is 72°. For the sling of the four-limb sling, when the first hinge point 18 is arranged in a square, the angle between the two struts is 90°.

[0058] Embodiment 4:

[0059] According to Figure 1 , Figure 3 and Figure 4 shown, a flexible sling with adjustable suspended object attitude is different from Embodiment 1 or Embodiment 2 in that: the sling assembly 1 is provided with four limbs; the four-limb sling assembly 1 is hinged on the upper surface of the suspension bracket 3 in a rectangular matrix.

[0060] In the technical solution of this embodiment, the sling assembly 1 is provided with four limbs, which can be used for lifting most suspended objects, and the operation is stable, and the production of the matching suspension bracket 3 is more convenient.

[0061] Embodiment 5:

[0062] According to Figure 1 , Figure 2 and Figure 10 shown, a flexible sling with adjustable suspended object attitude is different from Embodiment 4 in that: the suspension bracket 3 is a frame integral structure with central and axial symmetry composed of a cross bar 6, a vertical bar 7 and a diagonal bar 8; the suspension bracket 3 is symmetrically connected with a suspension rod 4 for connecting with the suspended object.

[0063] Furthermore, two cross bars 6, five vertical bars 7 and two diagonal bars 8 are provided; the two cross bars 6 are arranged in parallel; the five vertical bars 7 are connected to the two cross bars 6 in parallel and are perpendicular to the cross bars 6; one of the vertical bars 7 is connected to the central position of the cross bar 6, and two vertical bars 7 are symmetrically and spacedly connected on both sides thereof; the two cross bars 6 and the vertical bars 7 adjacent to both sides of the vertical bar 7 at the central position form a rectangle, and two diagonal bars 8 are obliquely connected on the diagonal of the rectangle, and a sling assembly 1 is hinged on the upper surface of each of the four corners of the rectangle; each end of each diagonal bar 8 is hinged with a hydraulic cylinder 2, and the axis line of the hydraulic cylinder coincides with the axis line of the diagonal bar 8.

[0064] During actual use, the suspended object 9 is fixed to the lower bottom surface of the hanging bracket 3 through the hanging rod 4. When the crane hook 10 lifts the top ends of all the sling assemblies 1, the projection of the crane hook 10 on the hanging bracket 3 is located at the central position of the hanging bracket 3.

[0065] In this embodiment, the intersection point of the two diagonal bars coincides with the projection point of the hook 10 on the hanging bracket 3.

[0066] During specific application, the number of limbs of the sling assembly 1 can be determined according to the shape of the suspended object 9, so as to determine the specific shape of the hanging bracket 3. For example, if three limbs are adopted, the shape of the hanging bracket 3 can be an equilateral triangle, as Figure 10 shown, so that the projection of the crane hook 10 on the hanging bracket 3 is at the center of the hanging bracket 3 after lifting the slings on all limbs of the sling assembly 1.

[0067] Embodiment Six:

[0068] Referring to Figures 1 - 10 , a lifting method of a flexible sling, using a flexible sling with adjustable suspended object attitude, includes the following steps:

[0069] Step 1: Connect the suspended object 9 to the hanging bracket 3;

[0070] Step 2: Connect the dynamic biaxial inclination sensor 11 to the flat surface of the suspended object 9 to facilitate measuring the inclination state of the suspended object;

[0071] Step 3: Connect the free ends of the multi-limb sling assemblies 1 to the crane hook 10, and the crane lifts;

[0072] Step 4: The dynamic biaxial inclination sensor 11 measures the inclination angle of the suspended object 9 and sends the inclination angle data to the pump station and control center 12; the pump station and control center 12 control the corresponding hydraulic cylinders 2 to extend or retract, changing the lengths of the slings in the sling assemblies 1 corresponding to the hinged hydraulic cylinders 2 until the suspended object 9 is adjusted to a horizontal state.

[0073] The present invention is composed of a sling assembly, a hydraulic cylinder, a suspension bracket, a dynamic biaxial inclination sensor, a pump station and a control center. When hoisting an object, the present invention does not require adding slings, and only by controlling the extension or retraction of the hydraulic cylinder can the length of the sling be adjusted, which is simple, convenient and easy to implement.

[0074] The sling of the present invention is designed into two sections, and the two sections of the sling are connected by a hinge, and the output end of the hydraulic cylinder is hinged to the hinge. By extending or retracting the hydraulic cylinder, the straight sling in the original position is bent, so as to achieve the purpose of changing the length of the sling, saving time and effort.

[0075] Through the cooperation of the dynamic biaxial inclination sensor with the pump station and the control center, the adjustment accuracy of the present invention is greatly improved, so as to achieve the purpose of accurately adjusting the attitude of the hoisted object.

[0076] The present invention can adopt slings with different numbers of limbs according to the different shapes of the hoisted objects, expanding its application range.

[0077] Embodiment Seven:

[0078] A flexible sling with adjustable hoisting object attitude is used in precast concrete beams, and the construction situation is as Figures 5 - 7 shown.

[0079] Use a large crawler crane 13 to hoist a precast concrete beam 14 as Figure 5 shown, and the hook 10 of the crawler crane 13 is connected to the sling assembly 1.

[0080] The crawler crane 13 turns the precast concrete beam 14 to the installation position. After the flexible sling 15 with adjustable hoisting object attitude accurately adjusts the installation angle of the precast concrete beam 14, the precast concrete beam 14 is installed to the designed position.

[0081] During the precasting process of the precast concrete beam 14, a connecting suspension rod 4 is embedded, and the connecting suspension rod 4 is threaded to firmly connect the precast concrete beam 14 with the suspension bracket 3. A dynamic biaxial inclination sensor 11 is installed on the plane where the installation angle of the precast concrete beam 14 needs to be controlled, usually installed on the top or bottom surface of the precast beam.

[0082] The installation of the precast concrete beam 14 is usually divided into three steps: 1. The precast concrete beam 14 is transported to the bridge position by a transport vehicle; 2. The crawler crane 13 hoists it to the installation position; 3. Install it in place according to the cross slope and longitudinal slope required by the design.

[0083] In the second operation, it is required that the precast concrete beam 14 be kept in a horizontal state. Usually, due to reasons such as the asymmetric shape of the precast concrete beam 14 itself, uneven distribution of steel bars, uniform density of concrete, and deviation in the embedded position of the connecting suspension rod, the precast concrete beam 14 is usually in an inclined state during the hoisting process. The flexible sling 15 with adjustable load attitude measures the inclination angle of the precast concrete beam 14 through the dynamic biaxial inclination sensor 11, and controls the extension length of the hydraulic cylinder 2 through the pump station and control center 12 to change the length of the sling, so as to keep the precast concrete beam 14 in a horizontal state.

[0084] In the second operation, the pump station and control center 12 control the extension length of the hydraulic cylinder 2 to change the length of the sling, so as to keep the precast concrete beam 14 at the installation angle required by the design. After judging that the angle of the precast concrete beam 14 meets the design requirements through the measurement data of the dynamic biaxial inclination sensor 11, the crawler crane 13 hoists the precast concrete beam 14 to the installation position.

[0085] Without conflict, those skilled in the art can combine the relevant technical features in the above examples according to the actual situation to achieve the corresponding technical effects. The specific combinations are not elaborated herein one by one.

[0086] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.

[0087] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0088] The above is only a preferred embodiment of the present invention. The present invention will not be limited to these embodiments shown herein, but rather should conform to the broadest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A flexible sling with adjustable posture, characterized in that: The invention comprises a sling assembly (1), a hydraulic cylinder (2), a hanger (3), a dynamic dual-axis tilt sensor (11), a pump station and a control center (12); the sling assembly (1) is provided with at least two limbs, one end of each limb of the sling assembly (1) is a free end, and the other end is hinged to the upper surface of the hanger (3) with the center of the hanger (3) as the symmetric center; the number of the hydraulic cylinders (2) matches the number of the limbs of the sling assembly (1); each of the hydraulic cylinders (2) is hinged to the upper surface of the hanger (3), and is located between the corresponding limb sling assembly (1) and the hanger ( On the line connecting the hinge point of the hydraulic cylinder (3) and the center of the hanger (3), the output end of the hydraulic cylinder (2) is hinged on the sling assembly (1) of the corresponding limb; the pump station and the control center (12) are connected to the hanger (3); the dynamic dual-axis inclination sensor (11) is connected to the hanging object (9); the hydraulic cylinder (2) is connected to the pump station and the control center (12); the dynamic dual-axis inclination sensor (11) is connected to the pump station and the control center (12) through electrical signal connection, which is used to control the extension and retraction of different hydraulic cylinders (2) and adjust the horizontality of the hanging object (9); The sling assembly (1) comprises a hinge (5) and two slings of different lengths; the two slings are connected via the hinge (5); the hinge (5) is hinged to the output end of the hydraulic cylinder (2); The hanger (3) is a frame-integrated structure composed of a horizontal rod (6), a vertical rod (7) and an inclined rod (8) and presents a central and axial symmetry. The hanger (3) is symmetrically connected with a hanger rod (4) for connecting with a hanged object. Two cross bars (6), five vertical bars (7) and two diagonal bars (8) are provided; the two cross bars (6) are arranged in parallel; the five vertical bars (7) are connected in parallel to the two cross bars (6) and are arranged perpendicular to the cross bars (6); one of the vertical bars (7) is connected to the center of the cross bar (6), and two vertical bars (7) are symmetrically connected on both sides of the vertical bar (7); the two cross bars (6) and the vertical bars (7) adjacent to the vertical bar (7) at both sides of the center position form a rectangle, two diagonal bars (8) are obliquely connected on the diagonal lines of the rectangle, and the upper surfaces of the four corners of the rectangle are respectively hinged with a sling assembly (1); a hydraulic cylinder (2) is hinged at both ends of each diagonal bar (8), and the axis center line of the hydraulic cylinder coincides with the axis center line of the diagonal bar (8).

2. A flexible sling with adjustable posture for slinging objects as claimed in claim 1, characterized in that: The hinged member (5) is an integral structure consisting of two support rods; the two support rods are arranged at an angle; a hinge hole is respectively provided at the outer end of the two support rods, and a hinge hole is provided at the connection point of the two support rods.

3. A flexible sling with adjustable posture for slinging objects as claimed in claim 1, characterized in that: The hinged member (5) is a triangular integrated structure formed by three support rods; a hinge hole is respectively provided at the three corners of the triangle.

4. A flexible sling with adjustable posture for slinging objects as claimed in claim 1, characterized in that: The sling assembly (1) is provided with four limbs; the four limbs of the sling assembly (1) are hinged on the upper surface of the hanger (3) in a rectangular matrix.

5. A lifting method of a flexible lifting device, characterized in that: The method of using a flexible sling with adjustable posture of a sling as claimed in any one of claims 1 to 4 comprises the following steps: Step 1: Connect the hanging object (9) to the hanger (3); Step 2: Connect the dynamic dual-axis tilt sensor (11) to the upper surface of the hanging object (9); Step 3, connecting the free end of the multi-limb sling assembly (1) to the hook (10) of the crane, and lifting the crane; Step 4: The dynamic dual-axis inclination sensor (11) measures the inclination angle of the suspended object (9) and sends the inclination angle data to the pump station and control center (12); the pump station and control center (12) control the corresponding hydraulic cylinder (2) to extend or retract, and change the length of the sling in the corresponding hinged sling assembly (1) of the hydraulic cylinder (2) until the suspended object (9) is adjusted to a horizontal state.

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