Lifting device and four-point lifting method

Abstract

The present invention provides a lifting device and a four-lifting-point lifting method, which relate to the technical field of lifting. The lifting device comprises a hydraulic compensating sling, a wire rope sling and a balance beam assembly. When the lifting device performs four-lifting-point lifting, a pipeline is used to connect the rod-side oil cylinder of a first hydraulic module with the rod-side oil cylinder of a second hydraulic module, and another pipeline is used to connect the bottom oil cylinder of the first hydraulic module with the bottom oil cylinder of the second hydraulic module, so that the lifting forces of the two hydraulic compensating slings, the first balance beam and the second balance beam can be made the same, and finally the two lifting points where the first balance beam and the second balance beam are located are always in an overall coordinated operation state, so that the stabilizing effect of three-lifting-point lifting can be exerted, and the safety and reliability of lifting can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting, and in particular to a hoisting device and a four-hoisting-point hoisting method. Background Art

[0002] Traditionally, slings are ropes made of steel wire ropes or synthetic fibers for lifting. For lifting large components, the most commonly used sling is a steel wire rope sling.

[0003] In the prior art, some lifting devices are provided with a hydraulic power unit, which is installed between an upper rigging and a lower rigging of the same lifting point, and the length of the lifting rigging is adjusted by the hydraulic power unit.

[0004] However, the hydraulic power unit can only adjust the length of the lifting sling and cannot balance the force and improve the lifting stability during the lifting process. Summary of the invention

[0005] The purpose of the present invention is to provide a lifting device to solve the technical problem of poor stability of the lifting device in the prior art.

[0006] The hoisting device provided by the present invention comprises a hydraulic compensating sling, a steel wire rope sling and a balance beam assembly;

[0007] The balance beam assembly comprises a first balance beam, a second balance beam, a third balance beam and a fourth balance beam; the first balance beam, the second balance beam, the third balance beam and the fourth balance beam are evenly spaced along the circumference of the hoisted component;

[0008] One end of the first balance beam close to the second balance beam is connected to the hoisted object through the hydraulic compensation sling, and one end of the first balance beam away from the second balance beam is connected to the hoisted object through the wire rope sling;

[0009] One end of the second balance beam close to the first balance beam is connected to the hoisted object through the hydraulic compensation sling, and one end of the second balance beam away from the first balance beam is connected to the hoisted object through the wire rope sling;

[0010] The two ends of the third balance beam are connected to the hoisted object through the steel wire rope sling; the two ends of the fourth balance beam are connected to the hoisted object through the steel wire rope sling;

[0011] The hydraulic compensating sling includes a hydraulic module; the hydraulic module of the hydraulic compensating sling connected to the first balance beam is a first hydraulic module, and the hydraulic module of the hydraulic compensating sling connected to the second balance beam is a second hydraulic module; the rod side cylinder of the first hydraulic module can be connected to the rod side cylinder of the second hydraulic module through a pipeline, and the bottom cylinder of the first hydraulic module can be connected to the bottom cylinder of the second hydraulic module through a pipeline.

[0012] Further, the hydraulic compensating sling also includes a first connecting rod and a second connecting rod;

[0013] The hydraulic module, the first connecting rod and the second connecting rod are connected in sequence through a pin shaft. The hydraulic rod of the hydraulic module is used to be connected to the first balance beam or the second balance beam through a pin shaft, and the second connecting rod is used to be connected to the hoisted component through a pin shaft.

[0014] Furthermore, a spare pin hole is provided on the first connecting rod.

[0015] Furthermore, a balancing weight is provided at one end of the first balancing beam away from the second balancing beam; and a balancing weight is provided at one end of the second balancing beam away from the first balancing beam.

[0016] Furthermore, it also includes a remote monitoring module;

[0017] The hydraulic module includes a solenoid valve and a stroke pressure sensor. The remote monitoring module is connected to the solenoid valve and can control the opening and closing of the solenoid valve. The remote monitoring module is connected to the stroke pressure sensor and can obtain data detected by the stroke pressure sensor.

[0018] Furthermore, the hydraulic module also includes a power and signal unit, which can provide power to the hydraulic module, and the power and signal unit can transmit a wireless signal to the remote monitoring module to wirelessly connect the hydraulic module to the remote monitoring module.

[0019] Further, it also includes a hydraulic power module;

[0020] The hydraulic power module can be communicated with the rod-side cylinder of the hydraulic module through a pipeline, and the hydraulic power module can be communicated with the bottom cylinder of the hydraulic module through a pipeline.

[0021] The present invention also aims to provide a four-hanging-point hoisting method, comprising the following steps:

[0022] The steps of assembling and installing the lifting device are as follows: assembling the hydraulic compensating sling, the wire rope sling and the balance beam assembly to form the lifting device provided by the present invention;

[0023] Connecting the rod-side cylinder of the first hydraulic module to the rod-side cylinder of the second hydraulic module through a pipeline, and connecting the bottom cylinder of the first hydraulic module to the bottom cylinder of the second hydraulic module through a pipeline;

[0024] Lifting step: Use the lifting device provided by the present invention to lift the hoisted part. During the lifting process, the vertical forces of the two hydraulic compensation slings are equal, so that the first balance beam and the second balance beam move in coordination.

[0025] Furthermore, the method further comprises the following steps:

[0026] Preparation steps: connect the outlet of the hydraulic power module and the inlet of the hydraulic power module through two pipes in sequence, start the hydraulic pump of the hydraulic power module, fill the two pipes with hydraulic oil, and remove the two pipes separately.

[0027] Furthermore, the method further comprises the following steps:

[0028] Adjustment steps: connect the rod-side oil cylinder of the first hydraulic module with the hydraulic power module through a pipeline, connect the bottom oil cylinder of the first hydraulic module with the hydraulic power module through a pipeline, adjust the hydraulic rod stroke of the first hydraulic module to half of the total stroke, remove the pipeline between the rod-side oil cylinder of the first hydraulic module and the hydraulic power module, and adjust the bottom oil cylinder pressure of the first hydraulic module to a preset value;

[0029] Use pipelines to connect the rod-side oil cylinder of the second hydraulic module with the hydraulic power module, use pipelines to connect the bottom oil cylinder of the second hydraulic module with the hydraulic power module, adjust the hydraulic rod stroke of the second hydraulic module to half of the total stroke, remove the pipeline between the rod-side oil cylinder of the second hydraulic module and the hydraulic power module, and adjust the bottom oil cylinder pressure of the second hydraulic module to a preset value;

[0030] The hydraulic rod stroke of the first hydraulic module is the same as the hydraulic rod stroke of the second hydraulic module, and the bottom cylinder pressure of the first hydraulic module is the same as the bottom cylinder pressure of the second hydraulic module.

[0031] The hoisting device provided by the present invention comprises a hydraulic compensating sling, a steel wire rope sling and a balance beam assembly; the balance beam assembly comprises a first balance beam, a second balance beam, a third balance beam and a fourth balance beam; the first balance beam, the second balance beam, the third balance beam and the fourth balance beam are evenly spaced along the circumference of the hoisted part; the end of the first balance beam close to the second balance beam is connected to the hoisted part through the hydraulic compensating sling, and the end of the first balance beam away from the second balance beam is connected to the hoisted part through the steel wire rope sling; the end of the second balance beam close to the first balance beam is connected to the hoisted part through the hydraulic compensating sling, and the end of the second balance beam away from the first balance beam is connected to the hoisted part through the steel wire rope One end of a balance beam is connected to the suspended part through the wire rope sling; both ends of the third balance beam are respectively connected to the suspended part through the wire rope sling; both ends of the fourth balance beam are respectively connected to the suspended part through the wire rope sling; the hydraulic compensation sling includes a hydraulic module; the hydraulic module of the hydraulic compensation sling connected to the first balance beam is a first hydraulic module, and the hydraulic module of the hydraulic compensation sling connected to the second balance beam is a second hydraulic module; the rod side cylinder of the first hydraulic module can be connected to the rod side cylinder of the second hydraulic module through a pipeline, and the bottom cylinder of the first hydraulic module can be connected to the bottom cylinder of the second hydraulic module through a pipeline. When the lifting device performs four-point lifting, one pipeline is used to connect the rod-side cylinder of the first hydraulic module with the rod-side cylinder of the second hydraulic module, and another pipeline is used to connect the bottom cylinder of the first hydraulic module with the bottom cylinder of the second hydraulic module. This can make the lifting forces of the two hydraulic compensation slings, the first balance beam and the second balance beam the same, and ultimately make the two lifting points where the first balance beam and the second balance beam are located always in an overall coordinated operation state, which can give play to the stabilizing effect of three-point lifting and greatly improve the safety and reliability of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 is a structural schematic diagram of a hoisting device provided by an embodiment of the present invention;

[0034] Figure 2 It is a structural schematic diagram of a crane hook of a hoisting device provided in an embodiment of the present invention;

[0035] Figure 3is a structural schematic diagram of a first balance beam of a hoisting device provided in an embodiment of the present invention;

[0036] Figure 4 is a schematic diagram of the structure of a hydraulic compensating sling of a hoisting device provided in an embodiment of the present invention;

[0037] Figure 5 is a schematic structural diagram of a steel wire rope sling of a hoisting device provided in an embodiment of the present invention;

[0038] Figure 6 is a schematic structural diagram of a hoisted component provided by an embodiment of the present invention;

[0039] Figure 7 is a structural schematic diagram of a hydraulic power module of a hoisting device provided in an embodiment of the present invention;

[0040] Figure 8 is a schematic structural diagram of a hose of a hoisting device provided in an embodiment of the present invention;

[0041] Fig. 9 It is a structural schematic diagram of a balancing block of a hoisting device provided in an embodiment of the present invention;

[0042] Fig.10 is a structural schematic diagram of a hydraulic module of a hoisting device provided in an embodiment of the present invention;

[0043] Fig.11 This is a diagram of a state of use in which an outlet of a hydraulic power module and an inlet of a hydraulic power module provided by an embodiment of the present invention are connected in sequence through two pipelines;

[0044] Fig.12 is a diagram of a state of use in which a hydraulic power module provided by an embodiment of the present invention is connected to a hydraulic module;

[0045] Fig.13 is a diagram of a usage state in which a first hydraulic module and a second hydraulic module are connected to each other according to an embodiment of the present invention;

[0046] Fig.14 It is a motion state diagram of applying a force T1 on a lifting point where a steel wire rope sling is provided in an embodiment of the present invention;

[0047] Fig.15 It is a motion state diagram of applying a force T2 on a lifting point where a wire rope sling is provided in an embodiment of the present invention;

[0048] Fig.16 It is a motion state diagram of applying a force T3 on the lifting point where the hydraulic compensating sling is located, provided by an embodiment of the present invention.

[0049] Icons: 10-crane hook; 11-hook; 12-connecting rod; 20-first balance beam; 21-balance beam body; 22-first lifting hole; 23-second lifting hole; 24-second balance beam; 25-third balance beam; 26-assembly connecting shaft; 27-fourth balance beam; 30-hydraulic compensation sling; 31-first pin hole; 32-hydraulic rod; 33-hydraulic module; 34-first connecting rod; 35-spare pin hole; 36-second connecting rod; 37-second pin hole; 331-cylinder; 3311-rod side cylinder; 3312-bottom cylinder; 332-linear break safety valve; 333-solenoid valve; 334-two-way cartridge valve; 33 5-power and signal unit; 336-stroke pressure sensor; 337-quick interface; 40-wire rope sling; 41-third pin hole; 42-third connecting rod; 43-connector; 44-wire rope hook; 50-suspended part; 51-steel structure body; 52-lifting eye; 60-hydraulic power module; 61-hydraulic pump; 62-oil tank; 63-reversing valve; 64-power unit; 65-hydraulic power module quick interface; 70-hose; 71-hose body; 72-hose quick interface; 80-balance block; 81-round sling; 82-balance block hook; 83-lifting eye; 84-counterweight; 90-remote monitoring module. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first" and "second" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The present invention provides a lifting device and a four-lifting-point lifting method. A plurality of embodiments are given below to describe in detail the lifting device and the four-lifting-point lifting method provided by the present invention.

[0054] Example 1

[0055] The lifting device provided in this embodiment is as follows: Figures 1 to 16 As shown, it includes a hydraulic compensation sling 30, a wire rope sling 40 and a balance beam assembly; the balance beam assembly includes a first balance beam 20, a second balance beam 24, a third balance beam 25 and a fourth balance beam 27; the first balance beam 20, the second balance beam 24, the third balance beam 25 and the fourth balance beam 27 are evenly spaced along the circumference of the suspended component 50; the end of the first balance beam 20 close to the second balance beam 24 is connected to the suspended component 50 through the hydraulic compensation sling 30, and the end of the first balance beam 20 away from the second balance beam 24 is connected to the suspended component 50 through the wire rope sling 40; the end of the second balance beam 24 close to the first balance beam 20 is connected to the suspended component 50 through the hydraulic compensation sling 30, and the end of the second balance beam 24 away from the first balance beam 20 is connected to the suspended component 50 through the wire rope sling 40 The rope sling 40 is connected to the hoisted part 50; the two ends of the third balance beam 25 are respectively connected to the hoisted part 50 through the wire rope sling 40; the two ends of the fourth balance beam 27 are respectively connected to the hoisted part 50 through the wire rope sling 40; the hydraulic compensation sling 30 includes a hydraulic module 33; the hydraulic module 33 of the hydraulic compensation sling 30 connected to the first balance beam 20 is a first hydraulic module 33, and the hydraulic module 33 of the hydraulic compensation sling 30 connected to the second balance beam 24 is a second hydraulic module 33; the rod side cylinder 3311 of the first hydraulic module 33 can be connected to the rod side cylinder 3311 of the second hydraulic module 33 through a pipeline, and the bottom cylinder 3312 of the first hydraulic module 33 can be connected to the bottom cylinder 3312 of the second hydraulic module 33 through a pipeline.

[0056] When the lifting device provided in this embodiment is used for four-point lifting, a pipeline is used to connect the rod-side cylinder 3311 of the first hydraulic module 33 with the rod-side cylinder 3311 of the second hydraulic module 33, and another pipeline is used to connect the bottom cylinder 3312 of the first hydraulic module 33 with the bottom cylinder 3312 of the second hydraulic module 33. This can make the lifting forces of the two hydraulic compensation slings 30, the first balance beam 20 and the second balance beam 24 the same, and ultimately make the two lifting points where the first balance beam 20 and the second balance beam 24 are located always in an overall coordinated operation state, which can give play to the stabilizing effect of three-point lifting and greatly improve the safety and reliability of lifting.

[0057] The hydraulic rod 32 of the hydraulic module 33 can move in both directions within a stroke range of 300 mm, and has a large safety margin during the lifting process.

[0058] Specifically, four crane hooks 10 are included. One crane hook 10 is respectively provided on the first balance beam 20 , the second balance beam 24 , the third balance beam 25 and the fourth balance beam 27 . The crane hook 10 includes a hook 11 and a connecting rod 12 . The connecting rod 12 is fixedly connected to the hook 11 .

[0059] The first balance beam 20 , the second balance beam 24 , the third balance beam 25 and the fourth balance beam 27 have the same structure. The first balance beam 20 is taken as an example for description below, and the structures of the second balance beam 24 , the third balance beam 25 and the fourth balance beam 27 are not repeated.

[0060] The first balance beam 20 includes a balance beam body 21, which is a steel frame structure. A first hanging hole 22 is provided in the middle of the top of the balance beam body 21, and the first hanging hole 22 is connected to the hook 11 through an assembly connecting shaft 26. Three second hanging holes 23 with different loads are provided at one end area of ​​the bottom of the balance beam body 21, and three second hanging holes 23 with different loads are provided at the other end area of ​​the bottom of the balance beam body 21. The second hanging holes 23 with suitable loads can be selected for use according to the lifting components.

[0061] Furthermore, the hydraulic compensating sling 30 also includes a first connecting rod 34 and a second connecting rod 36; the hydraulic module 33, the first connecting rod 34 and the second connecting rod 36 are connected in sequence through a pin shaft, the hydraulic rod 32 of the hydraulic module 33 is used to be connected to the first balance beam 20 or the second balance beam 24 through a pin shaft, and the second connecting rod 36 is used to be connected to the hoisted component 50 through a pin shaft.

[0062] Specifically, a first pin hole 31 is provided at one end of the hydraulic rod 32 of the hydraulic module 33 , and a second pin hole 37 is provided at one end of the second connecting rod 36 away from the first connecting rod 34 .

[0063] During lifting, the first pin hole 31 of the first hydraulic module 33 is connected to the second lifting hole 23 of the first balance beam 20 through a pin shaft to realize the assembly of the hydraulic compensation sling 30 and the first balance beam 20, and the first pin hole 31 of the second hydraulic module 33 is connected to the second lifting hole 23 of the second balance beam 24 through a pin shaft to realize the assembly of the hydraulic compensation sling 30 and the second balance beam 24.

[0064] The second pin hole 37 is connected to the lifting ear 52 on the surface of the suspended component 50 through a pin shaft to achieve the connection between the hydraulic compensation sling 30 and the suspended component 50 .

[0065] One end of the hydraulic module 33 away from the hydraulic rod 32 is connected to one end of the first connecting rod 34 through a pin shaft, and the other end of the first connecting rod 34 is connected to one end of the second connecting rod 36 through a pin shaft.

[0066] The length of the hydraulic rod 32 extending out of the hydraulic module 33 can be adjusted when the hydraulic compensation sling 30 is connected to the hydraulic power module 60. The specific adjustment method is shown in Example 2 and will not be repeated here.

[0067] Furthermore, a spare pin hole 35 is provided on the first connecting rod 34 .

[0068] A spare pin hole 35 is provided in the middle of the first connecting rod 34 , and a pin shaft can be passed through the spare pin hole 35 and the second connecting rod 36 , so that the first connecting rod 34 and the second connecting rod 36 are connected through the spare pin hole 35 and the pin shaft.

[0069] The first connecting rod 34 and the second connecting rod 36 can be connected to the pin shaft through the spare pin hole 35, or through the pin hole and the pin shaft at the end of the first connecting rod 34 close to the second connecting rod 36. In this way, two different lengths can be selected when assembling the hydraulic compensating sling 30, thereby improving its scope of application.

[0070] The wire rope sling 40 includes a third connecting rod 42, a connecting piece 43 and a wire rope hook 44. One end of the third connecting rod 42 is provided with a third pin hole 41, the other end of the third connecting rod 42 is fixedly connected to one end of the connecting piece 43, the other end of the connecting piece 43 is connected to the wire rope hook 44 through a pin shaft, the wire rope hook 44 is connected to the ear 52 on the surface of the hoisted component 50 through a pin shaft, the third pin hole 41 is connected to the second hanging hole 23 through a pin shaft (the second hanging hole 23 can be any suitable second hanging hole 23 on the first balance beam 20, the second balance beam 24, the third balance beam 25 and the fourth balance beam 27), so as to realize the assembly of the wire rope sling 40 with any suitable balance beam among the first balance beam 20, the second balance beam 24, the third balance beam 25 and the fourth balance beam 27.

[0071] The hoisted component 50 includes a steel structure body 51 , and eight lifting ears 52 are provided on the surface of the steel structure body 51 , wherein two lifting ears 52 are connected to the hydraulic compensation sling 30 via pins, and the remaining six lifting ears 52 are connected to the wire rope sling 40 via pins.

[0072] Furthermore, a balancing block 80 is disposed at one end of the first balancing beam 20 away from the second balancing beam 24 ; and a balancing block 80 is disposed at one end of the second balancing beam 24 away from the first balancing beam 20 .

[0073] The balancing weight 80 includes a circular sling 81, a balancing weight hook 82, a lifting eye 83 and a counterweight 84 which are connected in sequence, and the lifting eye 83 is threadedly connected to the counterweight 84. The circular sling 81 is connected to the second lifting hole 23 of the first balancing beam 20 through a pin, and the circular sling 81 is connected to the second lifting hole 23 of the second balancing beam 24 through a pin.

[0074] Furthermore, it also includes a remote monitoring module 90; the hydraulic module 33 includes a solenoid valve 333 and a stroke pressure sensor 336, the remote monitoring module 90 is connected to the solenoid valve 333, and the remote monitoring module 90 can control the opening and closing of the solenoid valve 333; the remote monitoring module 90 is connected to the stroke pressure sensor 336, and the remote monitoring module 90 can obtain the data detected by the stroke pressure sensor 336.

[0075] The remote monitoring module 90 can monitor the working status of the hydraulic compensation sling 30, read the stroke and pressure data of the hydraulic module 33 in real time and issue an early warning to avoid safety accidents.

[0076] The hydraulic module 33 includes an oil cylinder 331 , a linear fracture safety valve 332 , a solenoid valve 333 , a two-way cartridge valve 334 , a power and signal unit 335 , a stroke pressure sensor 336 and a quick interface 337 .

[0077] The lower part of the hydraulic rod 32 is in the oil cylinder 331 and can move up and down relative to the oil cylinder 331. The oil cylinder 331 includes a rod-side oil cylinder 3311 and a bottom oil cylinder 3312.

[0078] The linear rupture safety valve 332 is connected to the rod side cylinder 3311, which can keep the system pressure below the set value, thereby ensuring that the system will not have accidents due to high pressure.

[0079] One solenoid valve 333 is connected to the rod-side cylinder 3311 , and the other solenoid valve 333 is connected to the bottom cylinder 3312 . The solenoid valve 333 can be opened and closed under the control of the remote monitoring module 90 , thereby opening and closing the hydraulic compensation function.

[0080] One two-way cartridge valve 334 is connected to the rod-side cylinder 3311, and the other two-way cartridge valve 334 is connected to the bottom cylinder 3312. The two-way cartridge valve 334 allows bidirectional flow of hydraulic oil, thereby maintaining equal pressure and load in the connected hydraulic cylinders.

[0081] The stroke pressure sensor 336 can monitor the stroke and pressure status of the hydraulic cylinder in real time, and reflect the numerical values ​​to the remote monitoring module 90 in real time.

[0082] The quick interface 337 is connected to different components according to different uses.

[0083] Furthermore, the hydraulic module 33 also includes a power and signal unit 335 , which can provide power to the hydraulic module 33 , and the power and signal unit 335 can transmit a wireless signal to the remote monitoring module 90 to wirelessly connect the hydraulic module 33 to the remote monitoring module 90 .

[0084] The power and signal unit 335 provides power support for the hydraulic module 33 and has the ability to transmit wireless signals, thereby wirelessly connecting to the remote monitoring module 90 .

[0085] Furthermore, it also includes a hydraulic power module 60; the hydraulic power module 60 can be connected to the rod-side cylinder 3311 of the hydraulic module 33 through a pipeline, and the hydraulic power module 60 can be connected to the bottom cylinder 3312 of the hydraulic module 33 through a pipeline.

[0086] The hydraulic power module 60 includes a hydraulic pump 61, an oil tank 62, a reversing valve 63, a power supply unit 64 and a hydraulic power module quick interface 65. The hydraulic power module quick interface 65 is connected to different components according to different uses.

[0087] The hydraulic power module 60 is connected to the rod-side cylinder 3311 and the bottom cylinder 3312 through pipelines, and can adjust the stroke of the hydraulic rod 32 and the pressure of the bottom cylinder 3312 to a preset value. The specific adjustment method is shown in Example 2.

[0088] In this embodiment, the pipeline is a hose 70, and the hose 70 includes a hose body 71 and a hose quick connector 72. The hose quick connector 72 is connected to different components according to different uses.

[0089] The lifting device provided by the present embodiment has the characteristics of strong load-carrying capacity, adjustable stroke, collaborative operation, and remote monitoring. It overcomes the technical problem of "four lifting points, three balances", improves the lifting stability and safety, and reduces the upper load limit requirements of the crane and the hanging rails.

[0090] Example 2

[0091] The four-hanging-point hoisting method provided in this embodiment includes the following steps:

[0092] Assembling and installing the lifting device step: assembling the hydraulic compensating sling 30, the wire rope sling 40 and the balance beam assembly to form the lifting device provided in Example 1;

[0093] The rod-side cylinder 3311 of the first hydraulic module 33 is connected to the rod-side cylinder 3311 of the second hydraulic module 33 through a pipeline, and the bottom cylinder 3312 of the first hydraulic module 33 is connected to the bottom cylinder 3312 of the second hydraulic module 33 through a pipeline;

[0094] Lifting steps: Use the lifting device provided by the present invention to lift the hoisted component 50. During the lifting process, the vertical forces of the two hydraulic compensation slings 30 are equal, so that the first balance beam 20 and the second balance beam 24 move in coordination.

[0095] When using the four-point lifting method provided in this embodiment for lifting, two hoses 70 are used to connect the rod-side cylinder 3311 and the bottom cylinder 3312 of the two hydraulic compensation slings 30, so that the lifting forces of the two hydraulic compensation slings 30 and the two balance beams where they are located are the same, and ultimately the two lifting points where the two balance beams are located are always in an overall coordinated operation state, which can bring into play the stabilizing effect of three-point lifting and greatly improve the safety and reliability of lifting.

[0096] The hydraulic rod 32 of the hydraulic compensating sling 30 of the present invention can move in both directions within a stroke range of 300 mm, and has a large safety margin during the lifting process. Two different lengths can be selected when assembling the hydraulic sling, which increases its scope of application. The remote monitoring module 90 can monitor the working status of the hydraulic compensating sling 30, read the stroke and pressure in real time, and issue an early warning to avoid safety accidents.

[0097] Specifically, the four-hanging-point hoisting method provided in this embodiment includes the following steps:

[0098] Step S1: Fig.11 As shown, the preparation steps are: connecting the outlet of the hydraulic power module 60 and the inlet of the hydraulic power module 60 through two pipelines in sequence, starting the hydraulic pump 61 of the hydraulic power module 60, filling the two pipelines with hydraulic oil, and removing the two pipelines respectively.

[0099] Specifically, one end of a pipeline is connected to the outlet of the hydraulic power module 60, the other end of a pipeline is connected to one end of another pipeline, and the other end of the other pipeline is connected to the inlet of the hydraulic power module 60. At this time, the two pipelines and the hydraulic power module 60 are combined into a loop. The hydraulic pump 61 is turned on to fill the two pipelines with hydraulic oil. The two pipelines are removed from the hydraulic power module 60 respectively. At this time, the two pipelines are ready for installation.

[0100] Step S2: Fig.12 As shown, the adjustment steps are: use pipelines to connect the rod-side oil cylinder 3311 of the first hydraulic module 33 with the hydraulic power module 60, use pipelines to connect the bottom oil cylinder 3312 of the first hydraulic module 33 with the hydraulic power module 60, adjust the stroke of the hydraulic rod 32 of the first hydraulic module 33 to half of the total stroke, remove the pipeline between the rod-side oil cylinder 3311 of the first hydraulic module 33 and the hydraulic power module 60, and adjust the pressure of the bottom oil cylinder 3312 of the first hydraulic module 33 to a preset value;

[0101] Use pipelines to connect the rod-side oil cylinder 3311 of the second hydraulic module 33 with the hydraulic power module 60, use pipelines to connect the bottom oil cylinder 3312 of the second hydraulic module 33 with the hydraulic power module 60, adjust the stroke of the hydraulic rod 32 of the second hydraulic module 33 to half of the total stroke, remove the pipeline between the rod-side oil cylinder 3311 of the second hydraulic module 33 and the hydraulic power module 60, and adjust the pressure of the bottom oil cylinder 3312 of the second hydraulic module 33 to a preset value;

[0102] The stroke of the hydraulic rod 32 of the first hydraulic module 33 is the same as that of the hydraulic rod 32 of the second hydraulic module 33 , and the pressure of the bottom cylinder 3312 of the first hydraulic module 33 is the same as that of the bottom cylinder 3312 of the second hydraulic module 33 .

[0103] Specifically, the rod-side oil cylinder 3311 of the first hydraulic module 33 is connected to the hydraulic power module 60 through a pipeline, the bottom oil cylinder 3312 of the first hydraulic module 33 is connected to the hydraulic power module 60 through a pipeline, the hydraulic pump 61 is turned on, and the remote monitoring module 90 is connected to the hydraulic power module 60 through the wireless signal transmitted by the hydraulic power module 60. The first hydraulic module 33 and the remote monitoring module 90 are also connected through wireless signals. The lower end surface of the hydraulic rod 32 is controlled by the remote control module to be in the middle position of the stroke of the oil cylinder 331, so as to adjust the stroke of the hydraulic rod 32 of the first hydraulic module 33 to half of the total stroke, the hydraulic pump 61 is turned off, the pipeline between the rod-side oil cylinder 3311 of the first hydraulic module 33 and the hydraulic power module 60 is removed, the hydraulic pump 61 is turned on, and the pressure of the bottom oil cylinder 3312 is increased to a preset value and then the hydraulic pump 61 is turned off. In this embodiment, the preset value of the pressure of the bottom oil cylinder 3312 is 6.5 bar.

[0104] Repeat the steps in the previous paragraph to adjust the second hydraulic module 33 so that the stroke of the hydraulic rod 32 of the first hydraulic module 33 is the same as that of the second hydraulic module 33, and the pressure of the bottom cylinder 3312 of the first hydraulic module 33 is the same as that of the bottom cylinder 3312 of the second hydraulic module 33, and the installation conditions are met.

[0105] Step S3: Fig.13As shown, the steps of assembling and installing the lifting device are as follows: assembling the hydraulic compensating sling 30, the wire rope sling 40 and the balance beam assembly to form the lifting device provided in Example 1;

[0106] The rod-side cylinder 3311 of the first hydraulic module 33 is connected to the rod-side cylinder 3311 of the second hydraulic module 33 through a pipeline, and the bottom cylinder 3312 of the first hydraulic module 33 is connected to the bottom cylinder 3312 of the second hydraulic module 33 through a pipeline.

[0107] Specifically, the sling is assembled and installed, and two hydraulic compensating slings 30 are installed side by side on two adjacent balance beams (a first balance beam 20 and a second balance beam 24), and the rod side cylinder 3311 of the first hydraulic module 33 is connected with the rod side cylinder 3311 of the second hydraulic module 33 through a pipeline, and the bottom cylinder 3312 of the first hydraulic module 33 is connected with the bottom cylinder 3312 of the second hydraulic module 33 through a pipeline.

[0108] Step S4: Hoisting step: Use the hoisting device provided by the present invention to hoist the hoisted component 50. During the hoisting process, the vertical forces of the two hydraulic compensation slings 30 are equal, so that the first balance beam 20 and the second balance beam 24 move in coordination.

[0109] Specifically, during the hoisting process, the remote control module is used to monitor the stroke and pressure signal of the hydraulic compensating sling 30 in real time. During the hoisting process, the vertical forces of the two hydraulic compensating slings 30 are always equal, so the balance beams where the two hydraulic compensating slings 30 are located move in coordination.

[0110] like Figures 14 to 16 As shown, when a force T1 or T2 is applied to the lifting point where the wire rope sling 40 is located, the hoisted part 50 will perform R1 or R2 flipping along the line connecting the center of the lifting point where the two hydraulic compensating slings 30 are located and the lifting point where the other wire rope sling 40 is located. When a force T3 is applied to the lifting point where the hydraulic compensating sling 30 is located, the hoisted part 50 will perform R3 flipping along the line connecting the lifting points where the two wire rope slings 40 are located. Therefore, although the lifting is 4-lifting point lifting, the actual effect is equivalent to 3-lifting point lifting, avoiding the "four lifting points, three balances" problem and improving the lifting stability.

[0111] During the lifting process, the rod-side cylinders 3311 and the bottom cylinders 3312 of the two hydraulic compensating slings 30 are connected, and the hydraulic oil can automatically move between the connected cylinders 331 to keep the load of the cylinders 331 in a balanced state, so that the vertical force of the hydraulic compensating slings 30 is the same, and then the force of the two balance beams (the first balance beam 20 and the second balance beam 24) where the two hydraulic compensating slings 30 are located is the same.

[0112] 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 it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting device, characterized in that: Includes hydraulically compensated slings, wire rope slings and balance beam assemblies; The balance beam assembly comprises a first balance beam, a second balance beam, a third balance beam and a fourth balance beam; the first balance beam, the second balance beam, the third balance beam and the fourth balance beam are evenly spaced along the circumference of the hoisted component; One end of the first balance beam close to the second balance beam is connected to the hoisted object through the hydraulic compensation sling, and one end of the first balance beam away from the second balance beam is connected to the hoisted object through the wire rope sling; One end of the second balance beam close to the first balance beam is connected to the hoisted object through the hydraulic compensation sling, and one end of the second balance beam away from the first balance beam is connected to the hoisted object through the wire rope sling; The two ends of the third balance beam are connected to the hoisted object through the steel wire rope sling; the two ends of the fourth balance beam are connected to the hoisted object through the steel wire rope sling; The hydraulic compensating sling includes a hydraulic module; the hydraulic module of the hydraulic compensating sling connected to the first balance beam is a first hydraulic module, and the hydraulic module of the hydraulic compensating sling connected to the second balance beam is a second hydraulic module; the rod side cylinder of the first hydraulic module can be connected to the rod side cylinder of the second hydraulic module through a pipeline, and the bottom cylinder of the first hydraulic module can be connected to the bottom cylinder of the second hydraulic module through a pipeline.

2. The lifting device according to claim 1, characterized in that: The hydraulic compensating sling also includes a first connecting rod and a second connecting rod; The hydraulic module, the first connecting rod and the second connecting rod are connected in sequence through a pin shaft. The hydraulic rod of the hydraulic module is used to be connected to the first balance beam or the second balance beam through a pin shaft, and the second connecting rod is used to be connected to the hoisted component through a pin shaft.

3. The lifting device according to claim 2, characterized in that: The first connecting rod is provided with a spare pin hole.

4. The lifting device according to claim 1, characterized in that: A balancing weight is provided at one end of the first balancing beam away from the second balancing beam; and a balancing weight is provided at one end of the second balancing beam away from the first balancing beam.

5. The lifting device according to claim 1, characterized in that: It also includes a remote monitoring module; The hydraulic module includes a solenoid valve and a stroke pressure sensor. The remote monitoring module is connected to the solenoid valve and can control the opening and closing of the solenoid valve. The remote monitoring module is connected to the stroke pressure sensor and can obtain data detected by the stroke pressure sensor.

6. The lifting device according to claim 5, characterized in that: The hydraulic module further comprises a power and signal unit, which can provide power to the hydraulic module and transmit a wireless signal to the remote monitoring module so that the hydraulic module is wirelessly connected to the remote monitoring module.

7. The lifting device according to claim 1, characterized in that: Also included is a hydraulic power module; The hydraulic power module can be communicated with the rod-side cylinder of the hydraulic module through a pipeline, and the hydraulic power module can be communicated with the bottom cylinder of the hydraulic module through a pipeline.

8. A four-point lifting method, characterized in that: The following steps are involved: Assembling and installing the lifting device step: assembling the hydraulic compensating sling, the wire rope sling and the balance beam assembly to form the lifting device described in any one of claims 1 to 7; Connecting the rod-side cylinder of the first hydraulic module to the rod-side cylinder of the second hydraulic module through a pipeline, and connecting the bottom cylinder of the first hydraulic module to the bottom cylinder of the second hydraulic module through a pipeline; Lifting step: Use the lifting device described in any one of claims 1 to 7 to lift the hoisted object. During the lifting process, the vertical forces of the two hydraulic compensation slings are equal, so that the first balance beam and the second balance beam move in coordination.

9. The four-point hoisting method according to claim 8, characterized in that: The following steps are also included: Preparation steps: connect the outlet of the hydraulic power module and the inlet of the hydraulic power module through two pipes in sequence, start the hydraulic pump of the hydraulic power module, fill the two pipes with hydraulic oil, and remove the two pipes separately.

10. The four-point hoisting method according to claim 8, characterized in that: The following steps are also included: Adjustment steps: connect the rod-side oil cylinder of the first hydraulic module with the hydraulic power module through a pipeline, connect the bottom oil cylinder of the first hydraulic module with the hydraulic power module through a pipeline, adjust the hydraulic rod stroke of the first hydraulic module to half of the total stroke, remove the pipeline between the rod-side oil cylinder of the first hydraulic module and the hydraulic power module, and adjust the bottom oil cylinder pressure of the first hydraulic module to a preset value; Use pipelines to connect the rod-side oil cylinder of the second hydraulic module with the hydraulic power module, use pipelines to connect the bottom oil cylinder of the second hydraulic module with the hydraulic power module, adjust the hydraulic rod stroke of the second hydraulic module to half of the total stroke, remove the pipeline between the rod-side oil cylinder of the second hydraulic module and the hydraulic power module, and adjust the bottom oil cylinder pressure of the second hydraulic module to a preset value; The hydraulic rod stroke of the first hydraulic module is the same as the hydraulic rod stroke of the second hydraulic module, and the bottom cylinder pressure of the first hydraulic module is the same as the bottom cylinder pressure of the second hydraulic module.

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