Hoisting mechanism and use method

Abstract

The present invention relates to the field of hoisting technology, and in particular to a hoisting mechanism and a method of use. The present invention provides a hoisting mechanism, comprising a main frame, at least two adjustable hoisting points, at least two fixed hoisting points, at least two sling tools and at least two sling rope tools; the adjustable hoisting points are installed on two opposite sides of the main frame, and the fixed hoisting points are installed on two opposite sides of the top of the main frame; at least one sling rope tool is installed on each of the adjustable hoisting points, and the position of the adjustable hoisting point on the main frame is adjustable; one end of the sling tool is connected to the fixed hoisting point, and the other end is connected to the lifting device. When it is found that the center of gravity of the hoisted object is unstable or the levelness exceeds the standard, the levelness and the force of the sling can be adjusted under load, without the need for repeated hoisting for verification, which reduces the labor intensity of the operator and shortens the adjustment steps and time.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting, and in particular to a hoisting mechanism and a use method thereof. Background Art

[0002] In large-scale construction projects, there are numerous equipment, modules, and components that require lifting and hoisting. Different objects have varying requirements for structure, weight, length, center of gravity, number and location of lifting points, and many require more than six lifting points and vertical hoisting. Before the lifting operation begins, calculations and planning must be conducted based on the actual conditions of the object being hoisted, along with the design of specialized lifting equipment and the selection of appropriate slings. During the lifting process, if uneven force is applied to the slings, the object's center of gravity is unstable, or the levelness exceeds the specified level, the object is typically lowered and manually adjusted on-site using tools such as hand hoists or adjustable pull rods to ensure levelness and uniformity of force. Failure to do so may result in undesirable consequences such as overloading the slings and damage to the object's structure, making lifting risks difficult to control.

[0003] After the hoisted object falls back, tools are manually added for adjustment. The final effect of the adjustment requires multiple hoisting verifications. It is impossible to adjust directly in the hoisting state. The adjustment process is cumbersome and the work efficiency is low. Summary of the Invention

[0004] (1) The problem to be solved by the present invention is that after the hoisted object falls back, manual tools are added for adjustment. The final effect of the adjustment requires multiple hoisting verifications, and it is impossible to adjust directly in the hoisting state. The adjustment process is cumbersome and the work efficiency is low.

[0005] (2) Technical solution

[0006] A lifting mechanism comprises a main frame, at least two adjustable lifting points, at least two fixed lifting points, at least two lifting sling tools and at least two lifting rope tools;

[0007] The adjustable hanging points are installed on two opposite sides of the main frame, and the fixed hanging points are installed on two opposite sides of the top of the main frame;

[0008] At least one of the sling tools is installed on each of the adjustable sling points, and the positions of the adjustable sling points on the main frame are adjustable;

[0009] One end of the sling tool is connected to the fixed lifting point, and the other end is connected to the lifting device. The length of the sling tool is adjustable.

[0010] According to one embodiment of the present invention, the sling tool includes a hydraulic cylinder and a secondary beam sling, one end of the hydraulic cylinder is connected to the fixed sling point through the secondary beam sling, and the other end is connected to the lifting device through the secondary beam sling.

[0011] According to one embodiment of the present invention, the main frame includes two main beams arranged in parallel, and a plurality of secondary beams are fixed between the two main beams along the length direction of the main beams. The secondary beams are arranged perpendicular to the main beams, and at least one fixed hanging point is fixed on the top of the secondary beams.

[0012] According to one embodiment of the present invention, four sling tools are provided, two secondary beams are fixed between the two symmetrical sides of the main beam, and a fixed sling point is welded at each end of the secondary beam. One end of the four sling tools is connected to the four fixed sling points respectively.

[0013] According to one embodiment of the present invention, the adjustable hanging point includes a base, two rollers, at least one clamp and at least one U-shaped hook, and the main beam is an I-beam; the base includes a block and two side plates, the two side plates are symmetrically fixed on the top of the block, the two rollers are rotatably mounted on the inner sides of the two side plates, and the U-shaped hook is welded to the lower surface of the block;

[0014] At least one rack is fixed to the web of the main beam along the length direction of the main beam, and the clamp cooperates with the rack to lock the adjustable hanging point.

[0015] According to one embodiment of the present invention, a shaft rod is installed on the side panel, and the shaft rod is arranged perpendicular to the side panel. The roller and the clamp are installed on the shaft rod in sequence. The clamp includes a sleeve, a first clamp rod, a second clamp rod and a spring. The sleeve is welded and fixed to the shaft rod, one end of the first clamp rod and one end of the second clamp rod are hinged to the sleeve, and the spring is fixed between the first clamp rod and the second clamp rod.

[0016] According to one embodiment of the present invention, a hydraulic pump station is installed on the main frame, and the hydraulic pump station is connected to the hydraulic cylinder through a hydraulic oil pipe.

[0017] According to one embodiment of the present invention, the fixed lifting point includes a lifting point block, which is fixed to the secondary beam by bolts, and the lifting point block is provided with a through hole for the secondary beam lifting cable to pass through.

[0018] According to one embodiment of the present invention, the sling tool includes a main beam sling and a locking member, and one end of the main beam sling is connected to the adjustable sling point through the locking member.

[0019] A method for using a lifting mechanism, using the above-mentioned lifting mechanism, includes the following steps:

[0020] S1: Connect the two ends of the hydraulic cylinder to the fixed lifting point and the hook of the lifting device respectively through the secondary beam lifting cable;

[0021] S2: Arrange lifting lugs at designated locations on the object being lifted, and then connect the main beam slings to the adjustable lifting points in sequence according to the number and location of the lifting lugs;

[0022] S3: The lifting device lifts and moves the entire lifting mechanism above the object to be lifted, ensuring that the hook and the calculated center of gravity of the object are on the same vertical line. Then, the position of the adjustable lifting point is adjusted according to the position of the lifting lug, ensuring that the adjustable lifting point is directly above the lifting lug.

[0023] S4: Connect the main beam slings to the lifting lugs of the object being lifted in sequence. If necessary, adjust the adjustable lifting points again to ensure that the main beam slings are in a vertical or slightly tilted state, and then lock the adjustable lifting points.

[0024] S5: Use measuring instruments to check the levelness of the hoisted object. If it exceeds the standard requirements, adjust the hydraulic cylinder by controlling the extension and contraction of the hydraulic pump station until the levelness of the hoisted object meets the standard requirements.

[0025] S6: The lifting device continues to lift the object to the predetermined position and then unloads it to complete the lifting work.

[0026] Beneficial effects of the present invention:

[0027] The present invention provides a lifting mechanism, comprising a main frame, at least two adjustable lifting points, at least two fixed lifting points, at least two lifting tools and at least two lifting rope tools; the adjustable lifting points are installed on two opposite side surfaces of the main frame, and the fixed lifting points are installed on two opposite sides of the top of the main frame; at least one lifting rope tool is installed on each of the adjustable lifting points, and the position of the adjustable lifting points on the main frame is adjustable; one end of the lifting tool is connected to the fixed lifting point, and the other end is connected to the lifting device, and the length of the lifting tool is adjustable.

[0028] Since the length of the sling tool can be adjusted according to actual conditions, when it is found that the center of gravity of the hoisted object is unstable or the levelness exceeds the standard, the levelness and the force of the sling can be adjusted under load. There is no need to repeatedly lift for verification, which reduces the labor intensity of the operator, shortens the adjustment steps and time, and the hoisting work can be completed with one lift. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A perspective view of an embodiment of the present invention;

[0031] Figure 2 A first assembly diagram of the adjustable suspension points and main beams provided in an embodiment of the present invention;

[0032] Figure 3 This is a second assembly diagram of the adjustable suspension points and main beams provided in an embodiment of the present invention.

[0033] Icons: 1-Hydraulic oil pipe; 2-Secondary beam; 201-Fixed lifting point; 3-Main beam; 301-Rack; 4-Hydraulic cylinder; 401-First locking buckle; 402-Second locking buckle; 5-Hydraulic pump station; 6-Cross beam; 7-Adjustable lifting point; 701-Block; 702-Side plate; 703-Roller; 704-Clip; 705-Rack plate; 706-Micro hydraulic cylinder; 8-Main beam sling; 801-Locking piece; 9-Lifted object; 901-Lifting ear; 10-Secondary beam sling. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a lifting mechanism, comprising a main frame, at least two adjustable lifting points 7, at least two fixed lifting points 201, at least two lifting tools and at least two lifting rope tools;

[0036] The adjustable hanging points 7 are installed on two opposite sides of the main frame, and the fixed hanging points 201 are installed on two opposite sides of the top of the main frame;

[0037] At least one lifting rope tool is installed on each adjustable lifting point 7, and the position of the adjustable lifting point 7 on the main frame is adjustable;

[0038] One end of the sling tool is connected to the fixed lifting point 201, and the other end is connected to the lifting device. The length of the sling tool is adjustable.

[0039] In this embodiment, the adjustable lifting point 7 can be moved along the main frame, facilitating flexible adjustment of its position. After reaching a desired position, the adjustable lifting point 7 is locked to the main frame. Furthermore, the adjustable lifting point 7 can be unlocked for further adjustment. This allows the position of the adjustable lifting point 7 to be flexibly changed according to the position of the lifting lug 901 on the object to be hoisted, enabling the hoisting of objects of varying sizes.

[0040] In this embodiment, the length of the sling tool can be adjusted according to actual conditions. When it is found that the center of gravity of the hoisted object is unstable or the horizontality exceeds the standard, the hoisted object does not need to be lowered back, but can be adjusted directly, shortening the adjustment steps and time, and the hoisting work can be completed with one lift.

[0041] Preferably, the slings are mounted on opposite sides of the main frame. Specifically, there can be two, four, or six slings, with no specific limit. However, at least two slings are required, as a single sling has a weak load-bearing capacity and is unstable and prone to shaking during lifting. If there are two slings, they are symmetrically arranged about the main frame, forming an inverted V-shape. If there are four slings, two are on one side of the main frame, and the other two are on the other side.

[0042] Preferably, Figure 1 As shown, the sling tool includes a hydraulic cylinder 4 and two secondary beam slings 10. The lower end of the hydraulic cylinder 4 is connected to a fixed lifting point 201 via one secondary beam sling 10, and the top end is connected to the hook of the lifting device via another secondary beam sling 10. By changing the extension and contraction of the hydraulic cylinder 4, the length of the sling tool can be changed.

[0043] For example, when there are two sling tools, namely a first sling tool and a second sling tool, assuming that the levelness of the hoisted object exceeds the standard, the end of the hoisted object close to the first sling tool is slightly higher, and the end of the hoisted object close to the second sling tool is slightly lower, then at this time the length of the hydraulic cylinder 4 close to the first sling tool can be increased, or the length of the hydraulic cylinder 4 close to the second sling tool can be shortened to adjust the levelness of the hoisted object.

[0044] In addition, in some scenarios, the suspended object 9 needs to be transported at an angle. For example, in a complex factory environment, the forward route is blocked by equipment and must be lifted at an angle. At this time, the inclination of the suspended object 9 can be adjusted by a sling tool.

[0045] Preferably, a first lock buckle 401 and a second lock buckle 402 are respectively provided at both ends of the hydraulic cylinder 4, the first lock buckle 401 is fixed to the bottom end of the hydraulic cylinder 4 by bolts, and the second lock buckle 402 is fixed to the top end of the hydraulic cylinder 4 by bolts, a secondary beam sling 10 is connected between the first lock buckle 401 at the bottom end of the hydraulic cylinder 4 and the fixed lifting point 201, and another secondary beam sling 10 is connected to the second lock buckle 402 at the top end of the hydraulic cylinder 4, and then the secondary beam sling 10 is hung on the hook of the lifting equipment.

[0046] Preferably, the main frame includes two main beams 3 arranged in parallel, and multiple secondary beams 2 are fixed between the two main beams 3 along the length direction of the main beam 3. The secondary beams 2 are arranged perpendicular to the main beams 3, and at least one fixed hanging point 201 is fixed on the top of the secondary beam 2.

[0047] In this embodiment, if Figure 1 As shown, two main beams 3 are arranged in parallel, the side end of one main beam 3 is flush with the side end of the other main beam 3, the two main beams 3 have the same length, two secondary beams 2 are provided, and the two secondary beams 2 are respectively arranged at the opposite ends of the main beam 3, and the secondary beams 2 are welded and fixed to the main beam 3. Specifically, the secondary beams 2 are welded to the upper surface of the main beam 3.

[0048] Preferably, a fixed lifting point 201 is welded on the front and rear ends of each secondary beam 2, with a total of four fixed lifting points 201. In this way, four lifting tools can be installed to lift the main frame from the four corners of the main frame, which has better stability and the main frame is not easy to shake during the lifting process.

[0049] Optionally, two secondary beams 2 are provided, and a fixed lifting point 201 is welded to the middle position of the upper surface of each secondary beam 2, for a total of two fixed lifting points 201. In this way, two lifting tools are used to lift objects. This setting is convenient for lifting lighter equipment. While being able to adjust the levelness of the equipment, it appropriately reduces the number of lifting tools and reduces costs.

[0050] Preferably, the fixed lifting point 201 includes a lifting point block, which is fixed to the secondary beam 2 by bolts or directly welded to the secondary beam 2. The lifting point block is provided with a through hole for the secondary beam lifting cable 10 to pass through.

[0051] Optionally, the length of the main beam 3 and the width and number of the secondary beams 2 can be flexibly set according to actual conditions. For example, the length of the main beam 3 can be extended to arrange more adjustable lifting points 7 to lift objects with long lengths; more secondary beams 2 can also be set on the main beam 3 to adjust the lifting points, which can also enhance the strength of the main frame.

[0052] Furthermore, two cross beams 6 are welded between the two main beams 3. The cross beams 6 are arranged perpendicular to the main beams 3. The lower surface of the cross beams 6 is welded to the upper surface of the main beam 3. The two cross beams 6 are located between the two secondary beams 2. The cross beams 6 serve to connect the two main beams 3 and strengthen the overall strength of the main frame.

[0053] Preferably, the main beam 3 is an I-beam, and a rack 301 is welded to both sides of the inner top wall of the main beam 3 , and the length of the rack 301 is slightly smaller than the length of the main beam 3 .

[0054] Preferably, the adjustable hanging point 7 includes a base, two rollers 703, at least one clamp 704 and at least one U-shaped hook. The base includes a block 701 and two side panels 702. The two side panels 702 are symmetrically fixed on the top of the block 701. The two rollers 703 are rotatably installed on the inner sides of the two side panels 702 respectively. The U-shaped hook is welded to the lower surface of the block 701. The clamp 704 cooperates with the rack 301 to lock the adjustable hanging point 7.

[0055] Figure 2 This is a front view of the adjustable lifting point 7. Specifically, the block 701 is a rectangular block, with side panels 702 symmetrically located at the front and rear ends of the top of the rectangular block. Two rollers 703 are rotatably mounted on the two side panels 702. The two rollers 703 rest on the inner bottom wall of the I-beam and are separated by a web. The position of the adjustable lifting point 7 on the main beam 3 can be adjusted by pushing the block 701 left or right. The position of the adjustable lifting point 7 can be flexibly changed according to the position of the lifting lugs 901 on the object to be hoisted, allowing objects of different sizes to be hoisted.

[0056] Optionally, the block 701 and the side plate 702 are integrally formed, a U-shaped hook is welded to the lower surface of the block 701, and a locking member 801 is provided at one end of the main beam sling 8, which is connected to the U-shaped hook through the locking member 801 to lift objects.

[0057] Preferably, Figure 2 As shown, a shaft is installed on the side plate 702, and the shaft is arranged perpendicular to the side plate 702. The roller 703 and the clamp 704 are installed on the shaft in sequence. The clamp 704 is close to the side plate 702 and the roller 703 and the clamp 704 are separated by a certain distance.

[0058] Specifically, the clamp 704 includes a sleeve, a first clamping rod, a second clamping rod, and a spring. The sleeve is welded to the sleeve, one end of the first clamping rod and one end of the second clamping rod are hinged to the sleeve, and the spring is fixed between the first clamping rod and the second clamping rod. In the locked state, the clamp 704 is V-shaped, with one end of the first clamping rod clamped on the rack 301, and one end of the second clamping rod also clamped on the rack 301. When the lock is released, the first and second clamping rods are pressed downward at the same time, and the spring is stretched, and the clamp 704 gradually changes from a V-shape to a straight shape, causing the first and second clamping rods to disengage from the rack 301, thereby releasing the lock. After releasing the first and second clamping rods, the deformation of the spring causes the first and second clamping rods to automatically return to a V-shape, clamping the rack 301 again.

[0059] Optional, such as Figure 3 As shown, the block 701 is a rectangular block, and the side plates 702 are symmetrically arranged at the front and rear ends of the top of the rectangular block. The side plates 702 are rectangular blocks, and the two rollers 703 are rotatably installed on the two side plates 702. The two rollers 703 are respectively placed on the inner bottom wall of the I-beam and are separated by the web.

[0060] The clamping member 704 includes a tooth plate 705 and two micro hydraulic cylinders 706, wherein the upper surface of the tooth plate 705 is provided with a tooth groove that engages with the rack 301, and the tooth plate 705 is arranged directly above the side plate 702. Two micro hydraulic cylinders 706 are vertically installed at the left and right ends of the side plate 702, and the top ends of the micro hydraulic cylinders 706 are fixed to the lower end of the tooth plate 705.

[0061] Optional, such as Figure 3 As shown, the bottom end of the micro hydraulic cylinder 706 passes through the lower surface of the side plate 702, and the extended end of the micro hydraulic cylinder 706 is toward the bottom of the main beam 3, that is, the micro hydraulic cylinder 706 applies force toward the bottom of the main beam 3 without acting on the side plate 702. There is a certain gap between the lower surface of the side plate 702 and the bottom of the main beam 3. When the adjustable lifting point 7 moves, the side plate 702 does not contact the bottom of the main beam 3, reducing the friction during movement.

[0062] In this way, the micro hydraulic cylinder 706 is extended, and the rod end of the micro hydraulic cylinder 706 acts on the bottom of the main beam 3. As the micro hydraulic cylinder 706 extends, the tooth plate 705 is lifted upward, driving the tooth plate 705 to move toward the rack 301, so that the tooth plate 705 is engaged with the rack 301, thereby jamming the adjustable lifting point 7, making it unable to move further, and having the effect of braking at any time.

[0063] Optional, such as Figure 3 As shown, the block 701 is a rectangular block, and the side plates 702 are symmetrically arranged at the front and rear ends of the top of the rectangular block. The side plates 702 are rectangular blocks, and the two rollers 703 are rotatably installed on the inner side surfaces of the two side plates 702. The two rollers 703 are respectively placed on the inner bottom wall of the I-beam and are separated by the web.

[0064] The clamp 704 includes a tooth plate 705 and two top screws. Two threaded holes are symmetrically opened on the side plate 702. The two threaded holes pass through from the upper surface of the side plate 702 to the lower surface of the side plate 702. The lower surface of the two top screws of the side plate 702 is screwed into the two threaded holes. Two threaded holes are symmetrically opened on the lower surface of the tooth plate 705. The two threaded holes do not pass through the tooth plate 705. The top ends of the top screws are screwed into the two threaded holes on the lower surface of the tooth plate 705.

[0065] Under normal circumstances, the top end of the top screw is screwed into the threaded hole on the lower surface of the tooth plate 705, and the lower end of the top screw exceeds the lower surface of the side plate 702. There is a certain gap between the lower surface of the side plate 702 and the bottom of the main beam 3. When it is necessary to fix the adjustable hanging point 7, by turning the top screw, the top screw rotates and rises, thereby pushing the tooth plate 705 to move upward, so that the tooth plate 705 is engaged with the rack 301, thereby fixing the adjustable hanging point 7 so that it is limited and cannot move anymore.

[0066] During on-site construction, the appropriate lifting point position can be flexibly selected according to the environmental conditions of the construction site and the size of the hoisted object 9 to complete the lifting task, which greatly improves the adaptability of the lifting mechanism and can adapt to most complex lifting environments.

[0067] Preferably, a hydraulic pump station 5 is installed on the main frame, and the hydraulic pump station 5 is connected to the hydraulic cylinder 4 through a hydraulic oil pipe 1. The hydraulic pump station 5 drives the hydraulic cylinder 4 to work through the hydraulic oil pipe 1.

[0068] Specifically, a bottom plate is welded between the two main beams 3 , the bottom plate is located near the middle of the main beam 3 , and the hydraulic pump station 5 is installed on the bottom plate.

[0069] By installing a hydraulic pump station 5 on the main frame, the hydraulic pump station 5 is used in conjunction with a remote control device. The hydraulic pump station 5 is controlled by the remote control device, and the hydraulic pump station 5 controls the extension and contraction of the hydraulic cylinder 4. This achieves the adjustment of the horizontality and the stress of the sling in a loaded state after the hoisted object 9 is lifted. The entire adjustment process can be completed by a single person through remote control, without the need for repeated lifting for verification, reducing the labor intensity of the operator, and having strong practicality and ease of use.

[0070] In addition, the micro hydraulic cylinder 706 is electrically connected to the remote control device, and the extension or contraction of the micro hydraulic cylinder 706 is controlled by the remote control device, so that the position of the adjustable hanging point 7 can be fixed at any time, so that the adjustable hanging point 7 is stabilized at a certain position.

[0071] In this embodiment, due to the diversity of the hoisted objects 9, the lifting environment is complex. For example, in the case of lifting equipment, the equipment is heavy at the front and light at the back, and when the main beam slings 8 are of the same length and the lifting point heights are the same, the force on the main beam slings 8 at the front end of the equipment is less than the force on the main beam slings 8 at the rear end of the equipment, that is, uneven force occurs. At this time, the hydraulic cylinder 4 located above the front end of the equipment can be extended through the hydraulic pump station 5, or the hydraulic cylinder 4 located above the rear end of the equipment can be shortened, so that the front end of the equipment is lower than the rear end, and the center of gravity of the equipment gradually moves toward the front end of the equipment, so that the force on the front and rear main beam slings 8 gradually becomes uniform.

[0072] Or when lifting an object, due to the error in the length selection of the main beam sling 8, the object 9 may be tilted. At this time, the horizontality of the object 9 may also be adjusted by the hydraulic cylinder 4.

[0073] For example, Figure 1As shown, assuming that the upper surface of the suspended object 9 is horizontal, a main beam sling 8 is connected to each of the four corners of the suspended object 9. However, since the two main beam slings 8 on the left are longer than the main beam slings 8 on the right, the suspended object 9 tilts during lifting, that is, the left side of the suspended object 9 is lower than the right side. In this case, the hydraulic pump station 5 can be used to extend the two hydraulic cylinders 4 on the right or shorten the two hydraulic cylinders 4 on the left, so that the left end of the suspended object 9 gradually becomes flush with the right side, thereby adjusting the horizontality of the suspended object 9.

[0074] Alternatively, during lifting, some of the main beam slings 8 may be in an unstretched state, and all the weight may be borne by other main beam slings 8. For example, if the upper surface of the hoisted object 9 is horizontal, and a main beam sling 8 is connected to each of the four corners of the hoisted object 9, the main beam sling 8 at the left front end is longer, while the other three main beam slings 8 are the same length. At this time, the other three main beam slings 8 bear all the weight of the hoisted object 9, while the main beam sling 8 at the left front end is not stressed. At this time, the hydraulic cylinder 4 located above the left front end of the hoisted object 9 can be shortened by the hydraulic pump station 5. The hoisted object 9 will gradually tilt, but all four main beam slings 8 will be stressed, and the stress will be more evenly distributed.

[0075] Due to the wide variety of shapes and equipment types of the hoisted object 9 and the complexity of the hoisting environment, it is impossible to describe all situations, so examples will not be given one by one. Through this hoisting mechanism, the horizontality and the tension of the sling can be adjusted in the loaded state after the hoisted object 9 is lifted. The entire adjustment process can be completed by a single person remotely, without the need for repeated lifting and verification, reducing the operator's labor intensity and having strong practicality and convenience.

[0076] It should be noted that the hoisted object 9 is generally welded with a lifting lug 901 , which is cut off after the hoisting is completed.

[0077] A method for using a lifting mechanism comprises the following steps:

[0078] S1: Connect the two ends of the hydraulic cylinder 4 to the fixed lifting point 201 and the hook of the lifting device respectively through the secondary beam lifting cable 10;

[0079] S2: Arrange the lifting lugs 901 at the designated positions on the object to be lifted 9, and then connect the main beam slings 8 to the adjustable lifting points 7 in sequence according to the number and positions of the lifting lugs 901;

[0080] S3: The lifting device lifts and moves the entire lifting mechanism to just above the object 9 to ensure that the hook and the calculated center of gravity of the object 9 are on the same vertical line, and then adjusts the position of the adjustable lifting point 7 according to the position of the lifting lug 901 of the object 9 to ensure that the adjustable lifting point 7 is just above the lifting lug 901;

[0081] S4: Connect the main beam sling 8 to the lifting lugs 901 of the object 9 in sequence, and if necessary, adjust the position of the adjustable lifting point 7 again to ensure that the main beam sling 8 is in a vertical state or a slightly inclined state, and then lock the adjustable lifting point 7;

[0082] S5: Use a measuring instrument to check the levelness of the suspended object 9. If it exceeds the standard requirement, adjust the extension and contraction of the hydraulic cylinder 4 by the hydraulic pump station 5 until the levelness of the suspended object 9 meets the standard requirement.

[0083] S6: The lifting device continues to lift the object 9 to the predetermined position and then unloads it to complete the lifting work.

[0084] In the description of the present invention, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0085] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to connections between the internal parts of two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0086] 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lifting mechanism, characterized in that: It comprises a main frame, at least two adjustable lifting points (7), at least two fixed lifting points (201), at least two lifting tools and at least two lifting rope tools; The adjustable hanging points (7) are installed on two opposite side surfaces of the main frame, and the fixed hanging points (201) are installed on two opposite sides of the top of the main frame; At least one of the sling tools is installed on each of the adjustable sling points (7), and the position of the adjustable sling points (7) on the main frame is adjustable; One end of the sling tool is connected to the fixed lifting point (201), and the other end is connected to the lifting device. The length of the sling tool is adjustable. The sling tool comprises a hydraulic cylinder (4) and a secondary beam sling (10), one end of the hydraulic cylinder (4) is connected to the fixed sling point (201) via the secondary beam sling (10), and the other end thereof is connected to the lifting device via the secondary beam sling (10); The main frame comprises two parallel main beams (3), a plurality of secondary beams (2) are fixed between the two main beams (3) along the length direction of the main beams (3), the secondary beams (2) are arranged perpendicular to the main beams (3), and at least one fixed hanging point (201) is fixed to the top of the secondary beams (2); Four sling tools are provided, two secondary beams (2) are fixed between two symmetrical sides of the main beam (3), two ends of the secondary beam (2) are respectively welded with a fixed sling point (201), and one end of the four sling tools is respectively connected to the four fixed sling points (201); The adjustable hanging point (7) comprises a base, two rollers (703), at least one clamp (704) and at least one U-shaped hook, and the main beam (3) is an I-beam; The base comprises a block (701) and two side plates (702), the two side plates (702) are symmetrically fixed on the top of the block (701), the two rollers (703) are rotatably mounted on the inner sides of the two side plates (702), and the U-shaped hook is welded to the lower surface of the block (701); At least one rack (301) is fixed to the web of the main beam (3) along the length direction of the main beam (3), and the clamp (704) cooperates with the rack (301) to lock the adjustable suspension point (7); A shaft is mounted on the side plate (702), the shaft being perpendicular to the side plate (702), the roller (703) and the clamp (704) being mounted on the shaft in sequence, the clamp (704) comprising a shaft sleeve, a first clamp, a second clamp and a spring, the shaft sleeve being welded and fixed to the shaft, one end of the first clamp and one end of the second clamp being hinged to the shaft sleeve, and the spring being fixed between the first clamp and the second clamp.

2. A hoisting mechanism according to claim 1, characterized in that: A hydraulic pump station (5) is installed on the main frame, and the hydraulic pump station (5) is connected to the hydraulic cylinder (4) via a hydraulic oil pipe (1).

3. A hoisting mechanism according to claim 1, characterized in that: The fixed lifting point (201) comprises a lifting point block, the lifting point block is fixed to the secondary beam (2) by means of bolts, and a through hole is provided on the lifting point block for the secondary beam lifting rope (10) to pass through.

4. A hoisting mechanism according to claim 1, characterized in that: The sling tool comprises a main beam sling (8) and a locking member (801), and one end of the main beam sling (8) is connected to the adjustable sling point (7) via the locking member (801).

5. A method for using a lifting mechanism, using a lifting mechanism according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Connecting the two ends of the hydraulic cylinder (4) to the fixed lifting point (201) and the hook of the lifting device respectively through the secondary beam lifting rope (10); S2: Arranging lifting lugs (901) at designated positions on the object to be lifted (9), and then sequentially connecting the main beam slings (8) to the adjustable lifting points (7) according to the number and positions of the lifting lugs (901); S3: The lifting device lifts and moves the entire lifting mechanism to above the object to be lifted (9), ensuring that the calculated center of gravity of the hook and the object to be lifted (9) are on the same vertical line, and then adjusts the position of the adjustable lifting point (7) relative to the position of the lifting lug (901), ensuring that the adjustable lifting point (7) is located directly above the lifting lug (901); S4: sequentially connect the main beam sling (8) to the lifting lugs (901) of the object to be lifted (9), and if necessary, adjust the position of the adjustable lifting point (7) again to ensure that the main beam sling (8) is in a vertical state or a slightly inclined state, and then lock the adjustable lifting point (7); S5: Use a measuring instrument to check the horizontality of the suspended object (9). If it exceeds the standard requirement, adjust the extension and contraction of the hydraulic cylinder (4) by controlling the hydraulic pump station (5) until the horizontality of the suspended object (9) meets the standard requirement; S6: The lifting device continues to lift the object (9) to the predetermined position and then unloads it, completing the lifting work.

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