Crane and self-disassembly system, self-assembly method and self-disassembly method thereof

Abstract

The present application belongs to the crane field, disclose a kind of crane and its self disassembly system, self assembly method and self disassembly method, by being equipped with self disassembly system in the tail of rotary table, can be hoisted by the lifting hoisting mechanism in self disassembly system to the front section component of folding mechanism of expansion mechanism in superlift counterweight luffing system, realize the lifting of front section component.In the case where the front end of front section component is hinged to the tail of rotary table, the folding mechanism of expansion mechanism can be integrally pulled by the pulling swing mechanism in self disassembly system, so that it can swing up and down around the tail of rotary table.Therefore, whether it is assembly or disassembly of folding mechanism of expansion mechanism, its whole suspension can be realized by self disassembly system, so that it can be quickly completed disassembly and assembly with the aid thereof.During the self disassembly process of folding mechanism of expansion mechanism, no additional crane needs to be rented, and there is no problem of difficult coordination of multiple cranes, so that the disassembly and assembly cost and difficulty can be greatly reduced, and the disassembly and assembly efficiency can be greatly improved.

Description

Technical Field

[0001] This invention relates to the field of crane technology, and more specifically, to a self-assembly and disassembly system for cranes, a crane, a crane self-assembly method, and a crane self-disassembly method. Background Technology

[0002] To ensure stability and prevent overturning accidents during operation, large and extra-large tonnage cranes typically have a super-lift counterweight luffing system installed at the rear of the crane. These systems include types such as suspended, linear, and folding types. For folding super-lift counterweight luffing systems, refer to... Figure 12 and Figure 13 The folding and unfolding mechanism in the system involves a process of overall suspension during assembly and disassembly. Since the existing cranes cannot disassemble and assemble the folding and unfolding mechanism by their own structure, it is necessary to use 1 to 2 rented cranes to lift the folding and unfolding mechanism to achieve overall suspension, thereby assisting in the assembly or disassembly.

[0003] However, renting a crane inevitably brings higher operating costs. When using two cranes for hoisting at the same time, if the folding and unfolding mechanism needs to perform folding and unfolding actions, the two cranes need to have a high degree of coordination. However, this coordination is often difficult, time-consuming and labor-intensive, and it is difficult to achieve rapid disassembly and assembly of the folding and unfolding mechanism. Summary of the Invention

[0004] In view of at least one of the above-mentioned defects or deficiencies in the prior art, the present invention provides a crane and its self-disassembly and assembly system, self-assembly method and self-disassembly method, which can use the crane's own structure to self-disassemble and assemble the folding and unfolding mechanism in the super-lift counterweight luffing system, so as to achieve the purpose of reducing disassembly and assembly costs, reducing disassembly and assembly difficulty and improving disassembly and assembly efficiency.

[0005] To achieve the above objectives, a first aspect of the present invention provides a self-disassembly and assembly system for a crane, comprising:

[0006] A lifting and hoisting mechanism is provided in the crane. This mechanism is capable of raising the front section of the folding and retracting mechanism to hinge the front end of the front section to the rear of the turntable, or of lowering the front section while the front end of the front section is disengaged from the rear of the turntable.

[0007] A traction swing mechanism is provided in the crane, which is capable of traction swinging the folding and unfolding mechanism up and down around the tail of the turntable while the front end of the front section component is hinged to the tail of the turntable.

[0008] In particular, with the cooperation of the lifting and hoisting mechanism, the crane is able to self-assemble and disassemble the folding and unfolding mechanism.

[0009] Optionally, the self-disassembly system further includes a common support extending backward from the top surface of the turntable tail to beyond the turntable tail. The lifting and hoisting mechanism includes a telescopic lifting device capable of being suspended from the top of the common support to hoist the front component. The traction swing mechanism includes a winch traction device disposed on the top surface of the turntable tail and a pulley disposed in the common support. The traction cable release section of the winch traction device is attached to the pulley and capable of tractioning the folding and unfolding mechanism.

[0010] Optionally, the top end of the telescopic lifting device is hinged to the top end of the common support, and the telescopic lifting device can swing back and forth around the top end of the common support.

[0011] Optionally, the telescopic lifting device includes a traction connection structure that can be detachably connected to the outer end of the traction cable release section and a standby locking structure that can be detachably connected to the common bracket. The telescopic lifting device can swing between the lifting and hoisting position and the standby locking position by the traction of the traction cable release section.

[0012] In the lifting and hoisting position, the telescopic lifting device is vertically positioned to hoist the front component. In the backup locking position, the telescopic lifting device is tilted and can be locked in the common support by the backup locking structure.

[0013] Optionally, the common support is a turntable A-frame or turntable mast for installation on the top surface of the turntable's rear end.

[0014] A second aspect of the present invention provides a crane including the self-disassembly and assembly system for the crane described above.

[0015] A third aspect of the present invention provides a crane self-assembly method, comprising:

[0016] Place the folding and unfolding mechanism to be assembled at the rear of the turntable;

[0017] The front section component is lifted by a lifting and hoisting mechanism to hinge the front end of the front section component to the rear end of the turntable;

[0018] The folding and unfolding mechanism is pulled upward around the tail of the turntable by the traction swing mechanism to hinge the rear end of the rear component, the bottom end of the super-lift counterweight suspension plate and the top end of the super-lift counterweight base.

[0019] Optionally, before the folding and unfolding mechanism is tractioned by the traction swing mechanism to swing upward around the tail of the turntable, the pipeline of the folding and unfolding mechanism is installed first, and then the angle between the front component and the rear component is reduced by the folding and unfolding device in the folding and unfolding mechanism.

[0020] Optionally, raising the front section component via a lifting and hoisting mechanism to hinge the front end of the front section component to the rear end of the turntable includes:

[0021] Connect the outer end of the release section of the traction cable in the winch traction equipment to the traction connection structure in the telescopic lifting equipment;

[0022] Unlock the shared bracket from the spare locking structure in the telescopic lifting device;

[0023] The extension section of the traction cable is released by the winch traction device to adjust the telescopic lifting device from an inclined position to a vertical position;

[0024] The front section component is hoisted by the vertically positioned telescopic lifting device to hinge the front end of the front section component to the rear end of the turntable.

[0025] Optionally, the folding and unfolding mechanism is traction-driven to swing upwards around the tail of the turntable via a traction swing mechanism to hinge the rear end of the rear section component, the bottom end of the super-lift counterweight suspension plate, and the top end of the super-lift counterweight base, including:

[0026] Disconnect the outer end of the traction cable release section from the traction connection structure;

[0027] Connect the outer end of the traction cable release section to the folding and unfolding mechanism;

[0028] The winch traction device recovers and shortens the release section of the traction cable to pull the folding and unfolding mechanism to swing upward around the tail of the turntable.

[0029] Optionally, before disconnecting the outer end of the traction cable release section from the traction connection structure, the traction cable release section is shortened by the winch traction device to adjust the telescopic lifting device from a vertical position to an inclined position, so that the inclined telescopic lifting device is relocked in the common bracket by the spare locking structure.

[0030] A fourth aspect of the present invention provides a crane self-disassembly method, comprising:

[0031] The traction swing mechanism is connected to the folding and retracting mechanism assembled in the crane, and the hinges of the rear end of the rear component, the bottom end of the superlift counterweight suspension plate, and the top end of the superlift counterweight base are disconnected.

[0032] The traction swing mechanism pulls the folding and unfolding mechanism downward around the tail of the turntable so that the rear end of the rear component is supported on the ground.

[0033] The lifting and hoisting mechanism is connected to the front component and the hinge between the front end of the front component and the rear end of the turntable is disconnected.

[0034] The lifting and hoisting mechanism lowers the front section component so that its front end is supported on the ground.

[0035] Optionally, before disconnecting the hinge between the front end of the front component and the rear end of the turntable, the included angle between the front component and the rear component is increased by the folding and unfolding device in the folding and unfolding mechanism, and then the pipeline of the folding and unfolding mechanism is disassembled.

[0036] Optionally, when the folding and retracting mechanism is pulled by the traction swing mechanism, the outer end of the release section of the traction cable of the winch traction device is connected to the folding and retracting mechanism.

[0037] Optionally, forming a hoisting connection between the lifting and hoisting mechanism and the front component includes:

[0038] The outer end of the traction cable release section is connected to the traction connection structure of the telescopic lifting device;

[0039] Unlock the shared bracket from the spare locking structure in the telescopic lifting device;

[0040] The extension section of the traction cable is released by the winch traction device to adjust the telescopic lifting device from an inclined position to a vertical position;

[0041] The vertically positioned telescopic lifting device is hoisted and connected to the front component.

[0042] This invention utilizes a self-disassembly and assembly system installed at the rear of a crane's turntable. The lifting mechanism within this system allows for the hoisting of the front component of the folding / unfolding mechanism in the super-lift counterweight luffing system, enabling the lifting and lowering of this component. With the front end of the component hinged to the rear of the turntable, a traction swing mechanism within the self-disassembly and assembly system provides overall traction to the folding / unfolding mechanism, allowing it to swing up and down around the rear of the turntable. Therefore, whether assembling or disassembling the folding / unfolding mechanism, the combined use of the lifting and hoisting mechanism and the traction swing mechanism ensures the entire mechanism is suspended in the air, facilitating rapid assembly or disassembly. Furthermore, this invention eliminates the need for additional crane rental during the self-disassembly and assembly process, avoiding the problem of multiple cranes being difficult to coordinate. This significantly reduces assembly and disassembly costs and difficulty, greatly improving efficiency.

[0043] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0044] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0045] Figure 1 This is a partial schematic diagram of a crane according to a specific embodiment of the present invention, in which the telescopic lifting device is in a standby locked position;

[0046] Figure 2 for Figure 1 A partial schematic diagram of a crane in another state, showing the telescopic lifting device in the lifting and hoisting position;

[0047] Figure 3 for Figure 1 A partial schematic diagram of the crane in another state, showing the telescopic lifting device in the standby locked position and the outer end of the traction cable release section disconnected from the telescopic lifting device;

[0048] Figures 4 to 11 This is a schematic diagram illustrating multiple steps that can be executed sequentially in a crane self-assembly method according to a specific embodiment of the present invention;

[0049] Figure 12 This is a schematic diagram of a crane equipped with a folding superlift counterweight luffing system in the prior art;

[0050] Figure 13 for Figure 12 The diagram shows a crane in another state, with the folding mechanism of the folding superlift counterweight luffing system in the fully extended state.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Shared support frame; 2. Telescopic lifting equipment.

[0053] 3. Winch traction equipment 4. Pulley

[0054] 5 Turntable 6 Superlift Counterweight Suspension Plate

[0055] 7. Super-lift counterweight base; 8. Folding and unfolding mechanism.

[0056] 11 Turntable A-frame 21 Traction connection structure

[0057] 22 Backup locking structure 31 Traction cable release section

[0058] 81 Front section component 82 Rear section component

[0059] 83 Folding and unfolding device Detailed Implementation

[0060] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0061] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0062] In the embodiments of the present invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positional relationships of the components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0063] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0064] Reference Figures 1 to 11 The first exemplary embodiment of the present invention provides a crane, which includes a turntable 5, a super-lift counterweight luffing system and a self-disassembly system, wherein the super-lift counterweight luffing system is a folding super-lift counterweight luffing system.

[0065] Reference Figure 11 The folding superlift counterweight luffing system includes a superlift counterweight suspension plate 6, a superlift counterweight base 7, and a folding and retracting mechanism 8. The superlift counterweight suspension plate 6 and the superlift counterweight base 7 are spaced apart and positioned behind the tail of the turntable. The front end of the folding and retracting mechanism 8 is hinged to the tail of the turntable, and the rear end of the folding and retracting mechanism 8, the bottom end of the superlift counterweight suspension plate 6, and the top end of the superlift counterweight base 7 are hinged together. More specifically, the top end of the superlift counterweight suspension plate 6 is suspended from the top of the superlift mast. The folding and retracting mechanism 8 includes a front section member 81 and a rear section member 82 hinged together, and a folding and retracting device 83 (e.g., a telescopic cylinder) hinged at both ends to the front section member 81 and the rear section member 82, respectively. The front end of the front section member 81 is the front end of the folding and retracting mechanism 8, and the rear end of the rear section member 82 is the rear end of the folding and retracting mechanism 8.

[0066] The folding and unfolding device 83 drives the front component 81 and the rear component 82 to fold and unfold, thereby adjusting the distance between the tail of the turntable and the super-lift counterweight base 7. That is, when the folding and unfolding device 83 drives the front component 81 and the rear component 82 to unfold, the included angle between the front component 81 and the rear component 82 increases, thereby increasing the distance between the tail of the turntable and the super-lift counterweight base 7; when the folding and unfolding device 83 drives the front component 81 and the rear component 82 to fold, the included angle between the front component 81 and the rear component 82 decreases, thereby shortening the distance between the tail of the turntable and the super-lift counterweight base 7.

[0067] Furthermore, the self-assembly / disassembly system is located at the rear of the turntable and includes a lifting and hoisting mechanism and a traction swing mechanism. On one hand, the lifting and hoisting mechanism can be used to hoist the front component 81, enabling its lifting and lowering. On the other hand, with the front end of the front component 81 hinged to the rear of the turntable, the traction swing mechanism can be used to pull the folding and unfolding mechanism 8 as a whole, allowing it to swing up and down around the rear of the turntable. Therefore, whether assembling or disassembling the folding and unfolding mechanism 8, the lifting and hoisting mechanism and the traction swing mechanism can work together to suspend the entire folding and unfolding mechanism 8, thus assisting in the rapid assembly or disassembly of the folding and unfolding mechanism 8.

[0068] As can be seen, this exemplary embodiment does not require additional crane rental during the self-disassembly and assembly process of the folding and unfolding mechanism 8, and there is no problem of multiple cranes being difficult to coordinate. Therefore, it can significantly reduce disassembly and assembly costs and difficulties, and greatly improve disassembly and assembly efficiency.

[0069] More specific solutions for the crane to self-assemble or self-disassemble the folding and unfolding mechanism 8 will be discussed later. Before that, different embodiments of the self-assembly and disassembly system will be introduced below.

[0070] In one embodiment, reference is made to... Figures 1 to 3 The self-disassembly system also includes a common support 1 that extends backward from the top of the turntable tail and beyond the turntable tail. The common support 1 can be a newly added special support or an existing structure set on the turntable tail. For example, the existing turntable A-frame 11 or turntable mast set on the top surface of the turntable tail in the crane can be used as the common support 1.

[0071] The lifting and hoisting mechanism may include a telescopic lifting device 2, which can be suspended at the top of the common support 1. Since the top of the common support 1 extends beyond the tail of the turntable, the telescopic lifting device 2 can hoist the front component 81 without interference and drive the front component 81 to rise and fall through its own vertical telescopic movement, ensuring that the front component 81 can be driven to rise and fall without colliding with the tail of the turntable.

[0072] The traction swing mechanism may include a winch traction device 3 disposed on the top surface of the turntable tail and a pulley 4 disposed in the common support 1. The winch traction device 3 includes a drum and a traction cable wound on the drum. By rotating the drum, the traction cable can be released or retrieved. The outwardly released portion of the traction cable forms a traction cable release section 31, which overlaps with the pulley 4 and can pull the folding and unfolding mechanism 8 to any position. Thus, the folding and unfolding mechanism 8 can be pulled as a whole when the front end of the front component 81 is hinged to the turntable tail. By rotating the drum, the folding and unfolding mechanism 8 can be driven to swing up and down around the turntable tail.

[0073] Furthermore, the top of the telescopic lifting device 2 and the top of the common support 1 can be hinged together, allowing the telescopic lifting device 2 to swing back and forth around the top of the common support 1. Thus, when it is necessary to hoist the front component 81, the telescopic lifting device 2 can be swung to a specific position to hoist the front component 81 without interference, ensuring that the front component 81 can be lifted and lowered without colliding with the tail of the turntable. When it is not necessary to hoist the front component 81, the telescopic lifting device 2 can be swung to another specific position for backup. For example, when the folding and unfolding mechanism 8 is pulled as a whole by the traction swing mechanism, the telescopic lifting device 2 can be used as a backup. In this case, if the telescopic lifting device 2 is tilted relative to the horizontal plane and close to the common support 1, it can prevent the bottom of the telescopic lifting device 2 from colliding with the folding and unfolding mechanism 8 when it swings upwards, ensuring that the folding and unfolding mechanism 8 can smoothly perform the upward swing action.

[0074] It should be noted that this embodiment does not limit the way the telescopic lifting device 2 can swing back and forth as a whole. For example, a telescopic mechanism, a folding mechanism, or other special mechanism can be set between the telescopic lifting device 2 and the common support 1 to drive the telescopic lifting device 2 to swing back and forth as a whole. Alternatively, to simplify the composition of the self-disassembly and assembly system, a traction swing mechanism can be used to drive the telescopic lifting device 2 to swing back and forth as a whole, without the need to set up an additional special mechanism for driving the telescopic lifting device 2 to swing back and forth as a whole.

[0075] In an embodiment where the telescopic lifting device 2 can be driven to swing back and forth as a whole using a traction swing mechanism, the telescopic lifting device 2 includes a traction connection structure 21 that can be detachably connected to the outer end of the traction cable release section 31 and a spare locking structure 22 that can be detachably connected to the common support 1. The traction connection structure 21 can be, for example, a lifting ring, and the spare locking structure 22 can be, for example, a pin engagement structure. By rotating the drum to adjust the length of the traction cable release section 31, the telescopic lifting device 2 can swing between the lifting and hoisting position and the spare locking position under the traction of the traction cable release section 31.

[0076] In the lifting and hoisting position, the telescopic lifting device 2 is vertically positioned to lift the front component 81. In the standby locking position, the telescopic lifting device 2 is tilted and can be locked in the common support 1 by the standby locking structure 22. With the telescopic lifting device 2 locked in the common support 1, it is not necessary to continue to pull the telescopic lifting device 2, so the connection between the outer end of the traction cable release section 31 and the traction connection structure 21 can be disconnected.

[0077] Furthermore, when it is necessary to use a traction swing mechanism to pull the folding and unfolding mechanism 8 as a whole when the front end of the front component 81 is hinged to the rear end of the turntable, the connection between the outer end of the traction cable release section 31 and the traction connection structure 21 can be disconnected, and the outer end of the traction cable release section 31 can be connected to any position of the folding and unfolding mechanism 8 to achieve overall traction of the folding and unfolding mechanism 8.

[0078] In one embodiment, the existing A-frame 11 or mast of the turntable located on the top surface at the rear of the turntable in the crane is used as a common support 1, and the telescopic lifting device 2 is driven to swing back and forth as a whole by a traction swing mechanism. In this way, the composition of the self-disassembly and assembly system can be greatly simplified, the number of components in the system can be reduced, the total weight of the crane can be reduced, and production and installation costs can be saved.

[0079] A second exemplary embodiment of the present invention also provides a crane self-assembly method, wherein the crane includes a self-assembly / disassembly system disposed at the rear of a turntable. The self-assembly / disassembly system includes a lifting and hoisting mechanism capable of raising and lowering a front section component 81, and a traction swinging mechanism capable of traction and swinging a folding and unfolding mechanism 8 around the rear of the turntable while the front end of the front section component 81 remains hinged to the rear of the turntable. The crane self-assembly method of this exemplary embodiment includes:

[0080] Step S1: Place the folding and unfolding mechanism 8 to be assembled at the rear of the turntable;

[0081] Step S2: The front section component 81 is lifted by the lifting and hoisting mechanism to hinge the front end of the front section component 81 to the rear end of the turntable;

[0082] Step S3: The folding and unfolding mechanism 8 is pulled upward around the tail of the turntable by the traction swing mechanism to hinge the rear end of the rear component 82, the bottom end of the super-lift counterweight suspension plate 6 and the top end of the super-lift counterweight base 7.

[0083] By executing steps S1 to S3, the crane can use the cooperation of the lifting and hoisting mechanism and the traction swing mechanism to achieve self-assembly of the folding and unfolding mechanism 8, thus eliminating the need to rent additional cranes and avoiding the problem of multiple cranes being difficult to coordinate. Therefore, it can significantly reduce assembly costs and assembly difficulty, and greatly improve assembly efficiency.

[0084] It should be noted that before performing the crane self-assembly method of this exemplary embodiment, the top end of the superlift counterweight suspension plate 6 is usually pre-suspended on the top end of the superlift mast, so the relative position of the bottom end of the superlift counterweight suspension plate 6 and the tail of the turntable has been pre-determined.

[0085] After step S2 and before step S3, if the distance between the hinge point of the front end of the folding / unfolding mechanism 8 and the rear end of the turntable and the bottom end of the super-lift counterweight suspension plate 6 is less than the distance between the front and rear ends of the folding / unfolding mechanism 8 at this time, then the distance between the front and rear ends of the folding / unfolding mechanism 8 needs to be appropriately shortened so that when step S3 is executed, the folding / unfolding mechanism 8 can swing upwards to a position where it can hinge with the bottom end of the super-lift counterweight suspension plate 6. For this situation, refer to... Figure 6 and Figure 7 Before performing step S3, the pipelines (e.g., hydraulic lines, electrical lines, etc.) of the folding and unfolding mechanism 8 can be installed first, allowing the crane to control the folding and unfolding device 83 in the folding and unfolding mechanism 8. By controlling the folding and unfolding device 83, the included angle between the front component 81 and the rear component 82 can be reduced, thereby appropriately shortening the distance between the front and rear ends of the folding and unfolding mechanism 8. Obviously, in the step of reducing the included angle between the front component 81 and the rear component 82, the crane does not use an external device to control the folding and unfolding device 83. Therefore, this step also belongs to a specific implementation scheme under the self-assembly method.

[0086] In one embodiment, the self-assembly system includes a common support 1 extending backwards from the top of the turntable's rear end and beyond the turntable's rear end. The lifting and hoisting mechanism includes a telescopic lifting device 2, which is capable of being suspended from the top of the common support 1. The traction swing mechanism includes a winch traction device 3 disposed on the top surface of the turntable's rear end and a pulley 4 disposed in the common support 1. The winch traction device 3 includes a drum and a traction cable wound on the drum; rotation of the drum releases or retracts the traction cable. The outwardly released portion of the traction cable forms a traction cable release section 31, which overlaps with the pulley 4 and is capable of pulling the folding and unfolding mechanism 8 to any position. Rotation of the drum causes the folding and unfolding mechanism 8 to swing up and down around the turntable's rear end.

[0087] More specifically, the top end of the telescopic lifting device 2 is hinged to the top end of the common support 1, allowing the telescopic lifting device 2 to swing back and forth around the top end of the common support 1. The telescopic lifting device 2 includes a traction connection structure 21 detachably connected to the outer end of the traction cable release section 31 and a spare locking structure 22 detachably connected to the common support 1. By rotating the drum to adjust the length of the traction cable release section 31, the telescopic lifting device 2 can swing between a lifting and hoisting position and a spare locking position under the traction of the traction cable release section 31. In the lifting and hoisting position, the telescopic lifting device 2 is vertically positioned to hoist the front component 81. In the spare locking position, the telescopic lifting device 2 is tilted and can be locked in the common support 1 by the spare locking structure 22.

[0088] Based on the structural configuration of this embodiment, step S2 may include:

[0089] Step S21: Connect the outer end of the release section 31 of the traction cable in the winch traction device 3 to the traction connection structure 21 in the telescopic lifting device 2;

[0090] Step S22: Unlock the shared bracket 1 from the spare locking structure 22 in the telescopic lifting device 2;

[0091] Step S23: Release the extended traction cable release section 31 by the winch traction device 3 to adjust the telescopic lifting device 2 from an inclined position to a vertical position;

[0092] Step S24: The front section component 81 is hoisted up by the vertically placed telescopic lifting device 2 so as to hinge the front end of the front section component 81 to the rear end of the turntable.

[0093] If step S2 includes steps S21 to S24, then step S3 may include:

[0094] Step S31: Disconnect the outer end of the release section 31 of the traction cable from the traction connection structure 21;

[0095] Step S32: Connect the outer end of the traction cable release section 31 to the folding and unfolding mechanism 8;

[0096] Step S33: The shortened release section 31 of the traction cable is retrieved by the winch traction device 3 to pull the folding and unfolding mechanism 8 to swing upward around the tail of the turntable.

[0097] If step S3 includes steps S31 to S33, before executing step S31, the hoisting traction device 3 can retract the shortened release section 31 of the traction cable to adjust the telescopic lifting device 2 from a vertical position to an inclined position, so that the inclined telescopic lifting device 2 is relocked in the common support 1 by the spare locking structure 22. In this way, the folding and unfolding mechanism 8 can be prevented from colliding with the bottom end of the telescopic lifting device 2 when executing step S33, ensuring that the folding and unfolding mechanism 8 can smoothly perform the upward swing action.

[0098] In one specific embodiment, the crane self-assembly method can be executed sequentially. Figures 4 to 11 The multiple steps shown, in which, during execution Figure 6 During the process, the pipeline for the folding and unfolding mechanism 8 needs to be installed.

[0099] A third exemplary embodiment of the present invention also provides a crane self-disassembly method, wherein the crane includes a self-disassembly system disposed at the rear of a turntable. The self-disassembly system includes a lifting and hoisting mechanism capable of raising and lowering a front section component 81, and a traction swinging mechanism capable of traction a folding and unfolding mechanism 8 to swing around the rear of the turntable while the front end of the front section component 81 remains hinged to the rear of the turntable. The crane self-disassembly method of this exemplary embodiment includes:

[0100] Step S1': Connect the traction swing mechanism to the folding and unfolding mechanism 8 assembled in the crane and disconnect the hinges of the rear end of the rear component 82, the bottom end of the superlift counterweight suspension plate 6 and the top end of the superlift counterweight base 7.

[0101] Step S2': The folding and unfolding mechanism 8 is pulled downward around the tail of the turntable by the traction swing mechanism so that the rear end of the rear component 82 is supported on the ground;

[0102] Step S3': Connect the lifting and hoisting mechanism to the front component 81 and disconnect the hinge between the front end of the front component 81 and the rear end of the turntable;

[0103] Step S4': The front component 81 is lowered by the lifting and hoisting mechanism so that the front end of the front component 81 is supported on the ground.

[0104] By executing steps S1' to S4', the crane can use the cooperation of the lifting and hoisting mechanism and the traction swing mechanism to achieve self-disassembly of the folding and unfolding mechanism 8, thus eliminating the need to rent additional cranes and avoiding the problem of multiple cranes being difficult to coordinate. Therefore, it can significantly reduce disassembly costs and disassembly difficulty, and greatly improve disassembly efficiency.

[0105] In one embodiment, before disconnecting the hinge between the front end of the front component 81 and the rear end of the turntable (e.g., after performing step S2' and before performing step S3'), the angle between the front component 81 and the rear component 82 can be increased by the folding and unfolding device 83 in the folding and unfolding mechanism 8 (e.g., the angle between the front component 81 and the rear component 82 can be adjusted to the maximum so that the folding and unfolding mechanism 8 can be fully unfolded), and then the pipelines (e.g., hydraulic pipelines, electrical pipelines, etc.) of the folding and unfolding mechanism 8 can be disassembled.

[0106] In this way, when performing step S4', the folding and unfolding mechanism 8 can be placed more stably on the ground (especially when the folding and unfolding mechanism 8 is fully unfolded, the stability is the highest), reducing the probability of the folding and unfolding mechanism 8 falling to the side, thereby reducing the risk of safety accidents and the risk of the folding and unfolding mechanism 8 being damaged or broken. On the other hand, disassembling the pipeline of the folding and unfolding mechanism 8 before disconnecting the hinge between the front end of the front component 81 and the rear end of the turntable can prevent the pipeline from being pulled when the front component 81 descends, thus preventing pipeline damage at the source.

[0107] Obviously, before the pipeline of the folding and unfolding mechanism 8 is disassembled, the step of the folding and unfolding device 83 adjusting the angle between the front component 81 and the rear component 82 can be directly controlled by the crane without the aid of external devices. Therefore, this step is also a specific implementation of the self-disassembly method.

[0108] In one embodiment, the self-assembly system includes a common support 1 extending backwards from the top surface of the turntable's rear end beyond the turntable's rear end. The traction swing mechanism includes a winch traction device 3 disposed on the top surface of the turntable's rear end and a pulley 4 disposed in the common support 1. The winch traction device 3 includes a drum and a traction cable wound on the drum; rotation of the drum releases or retracts the traction cable. The outwardly released portion of the traction cable forms a traction cable release section 31, which overlaps with the pulley 4 and can pull the folding and unfolding mechanism 8 to any position. Rotation of the drum causes the folding and unfolding mechanism 8 to swing up and down around the turntable's rear end.

[0109] Based on the structural configuration of this embodiment, step S2' may include:

[0110] When the folding and unfolding mechanism 8 is pulled by the traction swing mechanism, the outer end of the traction cable release section 31 of the winch traction device 3 is connected to the folding and unfolding mechanism 8.

[0111] Thus, by releasing the extended traction cable release section 31, the folding and unfolding mechanism 8 can swing downward around the tail of the turntable to support the rear end of the rear component 82 on the ground.

[0112] Furthermore, the lifting and hoisting mechanism includes a telescopic lifting device 2, which is suspended from the top of the common support 1. The top of the telescopic lifting device 2 is hinged to the top of the common support 1, allowing the telescopic lifting device 2 to swing back and forth around the top of the common support 1. The telescopic lifting device 2 includes a traction connection structure 21 detachably connected to the outer end of the traction cable release section 31 and a standby locking structure 22 detachably connected to the common support 1. By rotating the drum to adjust the length of the traction cable release section 31, the telescopic lifting device 2 can swing between the lifting and hoisting position and the standby locking position under the traction of the traction cable release section 31. In the lifting and hoisting position, the telescopic lifting device 2 is vertically positioned to hoist the front component 81. In the standby locking position, the telescopic lifting device 2 is tilted and can be locked in the common support 1 by the standby locking structure 22.

[0113] Based on the structural configuration of this embodiment, step S3' may include:

[0114] Step S31': Connect the outer end of the release section 31 of the traction cable to the traction connection structure 21 of the telescopic lifting device 2;

[0115] Step S32': Unlock the shared bracket 1 from the spare locking structure 22 in the telescopic lifting device 2;

[0116] Step S33': Release the extended traction cable release section 31 by the winch traction device 3 to adjust the telescopic lifting device 2 from an inclined position to a vertical position;

[0117] Step S34': Connect the vertically positioned telescopic lifting device 2 to the front component 81 for hoisting.

[0118] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0119] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0120] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A crane self-assembly method, comprising: Place the folding and unfolding mechanism (8) to be assembled behind the tail of the turntable; The front section component (81) is lifted by a lifting and hoisting mechanism to hinge the front end of the front section component (81) to the rear end of the turntable; The folding and unfolding mechanism (8) is tractioned by the traction swing mechanism to swing upward around the tail of the turntable to hinge the rear end of the rear section component (82), the bottom end of the super-lift counterweight suspension plate (6) and the top end of the super-lift counterweight base (7); the lifting and hoisting mechanism includes a telescopic lifting device (2) that can be suspended at the top of the common support (1) to hoist the front section component (81); the traction swing mechanism includes a winch traction device (3) for being set on the top surface of the tail of the turntable and a pulley (4) set in the common support (1); the traction cable release section (31) in the winch traction device (3) is attached to the pulley (4) and can traction the folding and unfolding mechanism (8); Before the folding and unfolding mechanism (8) is tugged upward around the tail of the turntable by the traction swing mechanism, the pipeline of the folding and unfolding mechanism (8) is installed first, and then the included angle between the front component (81) and the rear component (82) is reduced by the folding and unfolding device (83) in the folding and unfolding mechanism (8). The process of hoisting the front section component (81) using a lifting and hoisting mechanism to hinge the front end of the front section component (81) to the rear end of the turntable includes: The outer end of the traction cable release section (31) in the winch traction device (3) is connected to the traction connection structure (21) in the telescopic lifting device (2). Unlock the shared bracket (1) from the spare locking structure (22) in the telescopic lifting device (2); The extension section (31) of the traction cable is released by the winch traction device (3) to adjust the telescopic lifting device (2) from an inclined position to a vertical position; The front section component (81) is hoisted by the vertically positioned telescopic lifting device (2) to hinge the front end of the front section component (81) to the rear end of the turntable; The method of using a traction swing mechanism to pull the folding and unfolding mechanism (8) upward around the tail of the turntable to hinge the rear end of the rear section component (82), the bottom end of the super-lift counterweight suspension plate (6), and the top end of the super-lift counterweight base (7) includes: Disconnect the outer end of the traction cable release section (31) from the traction connection structure (21); The outer end of the traction cable release section (31) is connected to the folding and unfolding mechanism (8). The winch traction device (3) retracts and shortens the release section (31) of the traction cable to pull the folding and unfolding mechanism (8) to swing upward around the tail of the turntable; Before disconnecting the outer end of the traction cable release section (31) from the traction connection structure (21), the traction cable release section (31) is shortened by the winch traction device (3) to adjust the telescopic lifting device (2) from a vertical position to an inclined position, so that the inclined telescopic lifting device (2) is relocked in the common bracket (1) by the spare locking structure (22).

2. A method for self-disassembling a crane, comprising: The traction swing mechanism is connected to the folding and unfolding mechanism (8) assembled in the crane and the hinge of the rear end of the rear section component (82), the bottom end of the superlift counterweight suspension plate (6) and the top end of the superlift counterweight base (7) is disconnected. The traction swing mechanism pulls the folding and unfolding mechanism (8) to swing downward around the tail of the turntable so that the rear end of the rear component (82) is supported on the ground. The lifting and hoisting mechanism is connected to the front component (81) and the hinge between the front end of the front component (81) and the tail of the turntable is disconnected. The lifting and hoisting mechanism drives the front section component (81) to descend so that the front end of the front section component (81) is supported on the ground; The lifting and hoisting mechanism includes a telescopic lifting device (2) that can be suspended at the top of the common support (1) to hoist the front section component (81). The traction swing mechanism includes a winch traction device (3) for being installed on the top surface of the turntable tail and a pulley (4) installed in the common support (1). The traction cable release section (31) in the winch traction device (3) is attached to the pulley (4) and can pull the folding and unfolding mechanism (8). Before disconnecting the hinge between the front end of the front component (81) and the rear end of the turntable, the angle between the front component (81) and the rear component (82) is increased by the folding and unfolding device (83) in the folding and unfolding mechanism (8), and then the pipeline of the folding and unfolding mechanism (8) is disassembled. When the folding and unfolding mechanism (8) is pulled by the traction swing mechanism, the outer end of the traction cable release section (31) of the winch traction device (3) is connected to the folding and unfolding mechanism (8). The process of connecting the lifting and hoisting mechanism with the front component (81) includes: The outer end of the traction cable release section (31) is connected to the traction connection structure (21) of the telescopic lifting device (2). Unlock the shared bracket (1) from the spare locking structure (22) in the telescopic lifting device (2); The extension section (31) of the traction cable is released by the winch traction device (3) to adjust the telescopic lifting device (2) from an inclined position to a vertical position; The vertically positioned telescopic lifting device (2) is hoisted and connected to the front component (81).

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