CN116768082A - Crane, self-dismounting system, self-assembling method and self-dismounting method thereof - Google Patents

Abstract

The invention belongs to the field of cranes, and discloses a crane, a self-dismounting system, a self-assembling method and a self-dismounting method thereof. Under the condition that the front end of the front section component is hinged with the tail part of the turntable, the folding and unfolding mechanism can be integrally pulled by means of a traction swinging mechanism in the self-dismounting system, so that the folding and unfolding mechanism can swing up and down around the tail part of the turntable. Therefore, no matter the folding and unfolding mechanism is assembled or disassembled, the whole suspension of the folding and unfolding mechanism can be realized through the self-dismounting system, so that the folding and unfolding mechanism can be assisted to quickly finish dismounting. Because the folding mechanism does not need to additionally rent a crane in the self-dismounting process, the problem that a plurality of cranes are difficult to cooperate is solved, so that the dismounting cost and the dismounting difficulty can be greatly reduced, and the dismounting efficiency is greatly improved.

Description

Crane, self-dismounting system, self-assembling method and self-dismounting method thereof

Technical Field

The invention relates to the technical field of cranes, in particular to a self-dismounting system for a crane, the crane, a crane self-assembly method and a crane self-dismounting method.

Background

In order to ensure the stability of the crane body and prevent capsizing accidents during operation of large-tonnage and super-tonnage cranes, a super-lifting counterweight luffing system is usually arranged at the rear part of the crane body, for example, the super-lifting counterweight luffing system is of a suspended type, a linear type, a folding type and the like. For a folding super-lifting counterweight luffing system, referring to fig. 12 and 13, the folding and unfolding mechanism in the system has an integral suspension process during assembly and disassembly, and the folding and unfolding mechanism cannot be self-assembled and disassembled by means of the self-structure of the existing crane, so that the folding and unfolding mechanism is required to be hoisted by means of rented 1-2 cranes to realize integral suspension, and further the folding and unfolding mechanism is assisted to complete assembly or disassembly.

However, the renting crane inevitably brings higher operation cost, and when two cranes are used for hoisting at the same time, if the folding and unfolding mechanism needs to execute folding and unfolding actions, the two cranes are required to have higher cooperation mercy, but the cooperation difficulty is often larger, time and labor are consumed, and the quick disassembly and assembly of the folding and unfolding mechanism are difficult to realize.

Disclosure of Invention

In order to overcome at least one of the defects or shortcomings in the prior art, the invention provides a crane, a self-dismounting system, a self-assembling method and a self-dismounting method thereof, which can self-dismount a folding and unfolding mechanism in an ultra-lifting counterweight amplitude changing system by means of the self-structure of the crane so as to achieve the purposes of reducing dismounting cost, reducing dismounting difficulty, improving dismounting efficiency and the like.

To achieve the above object, a first aspect of the present invention provides a self-dismounting system for a crane, comprising:

the lifting and hoisting mechanism is arranged in the crane and can drive a front section component of the folding and unfolding mechanism to rise so as to hinge the front end of the front section component with the tail part of the turntable or drive the front section component to descend in a state that the front end of the front section component is disconnected and hinged with the tail part of the turntable; and

the traction swing mechanism is arranged in the crane and can draw the folding and unfolding mechanism to swing up and down around the tail of the turntable under the state that the front end of the front section component is kept hinged with the tail of the turntable;

wherein, through the cooperation of lift hoist mechanism is used, the crane can be right folding receipts exhibition mechanism carries out from the dismouting.

Optionally, the self-dismounting system further comprises a common support which is used for extending backwards from the top surface of the tail part of the turntable to be beyond the tail part of the turntable, the lifting and hanging mechanism comprises a telescopic lifting device which can be hung at the top end of the common support to hang the front section of the member, the traction and swinging mechanism comprises a hoisting traction device which is used for being arranged on the top surface of the tail part of the turntable and a pulley which is arranged in the common support, and a traction rope release section in the hoisting traction device is lapped on the pulley and can pull the folding and unfolding mechanism.

Optionally, the top of flexible elevating equipment is articulated with the top of sharing support, flexible elevating equipment can around the top of sharing support back and forth swing.

Optionally, the telescopic lifting device comprises a traction connection structure detachably connected with the outer end of the traction rope release section and a standby locking structure detachably connected with the common support, and the telescopic lifting device can swing between a lifting position and a standby locking position through traction of the traction rope release section;

in the lifting position, the telescopic lifting device is vertically arranged so as to be capable of lifting the front section member, and in the standby locking position, the telescopic lifting device is obliquely arranged and can be locked in the common support through the standby locking structure.

Optionally, the common support is a turret propeller strut or turret mast for being disposed on a top surface of the turret tail.

The second aspect of the invention provides a crane comprising the self-dismounting system for the crane.

The third aspect of the invention provides a crane self-assembly method, comprising:

placing a folding and unfolding mechanism to be assembled behind the tail part of the turntable;

lifting the front-section component by a lifting mechanism so as to hinge the front end of the front-section component with the tail of the turntable;

and the folding and unfolding mechanism is pulled by the traction swing mechanism to swing upwards around the tail part of the turntable so as to hinge the rear end of the rear section member, the bottom end of the super-lifting counterweight hanging pull plate and the top end of the super-lifting counterweight base.

Optionally, before the folding and unfolding mechanism is pulled by the traction and swinging mechanism to swing upwards around the tail part of the turntable, a pipeline of the folding and unfolding mechanism is installed, and then an included angle between the front section component and the rear section component is reduced by a folding and unfolding device in the folding and unfolding mechanism.

Optionally, lifting the front-section member by a lifting mechanism to hinge the front end of the front-section member with the turntable tail comprises:

the outer end of a traction rope releasing section in hoisting traction equipment is connected with a traction connection structure in telescopic lifting equipment;

unlocking the shared bracket and a standby locking structure in the telescopic lifting equipment;

releasing and extending the traction rope release section through the hoisting traction equipment so as to adjust the telescopic lifting equipment from an inclined arrangement to a vertical arrangement;

and lifting the front section member by the vertically arranged telescopic lifting equipment so as to hinge the front end of the front section member with the tail part of the turntable.

Optionally, the step of driving the folding and unfolding mechanism to swing upwards around the tail of the turntable by the driving swing mechanism so as to hinge the rear end of the rear section member, the bottom end of the super-lifting counterweight hanging pull plate and the top end of the super-lifting counterweight base comprises the following steps:

disconnecting the outer end of the traction cable release section from the traction connection structure;

connecting the outer end of the traction rope release section to the folding and unfolding mechanism;

and recovering and shortening the traction rope releasing section through the hoisting traction equipment so as to draw the folding and unfolding mechanism to swing upwards around the tail part of the turntable.

Optionally, before disconnecting the outer end of the traction rope releasing section from the traction connection structure, recovering and shortening the traction rope releasing section by the hoisting traction device to adjust the telescopic lifting device from the vertical setting to the inclined setting, so that the telescopic lifting device in the inclined setting is locked in the common support again by the standby locking structure.

The fourth aspect of the invention provides a crane self-dismounting method, comprising the following steps:

the traction swinging mechanism and a folding and unfolding mechanism assembled in the crane form traction connection and are disconnected with the rear end of the rear section member, the bottom end of the super-lifting counterweight hanging pulling plate and the top end of the super-lifting counterweight base;

the folding and unfolding mechanism is pulled by the pulling and swinging mechanism to swing downwards around the tail part of the turntable so that the rear end of the rear section member is supported on the ground;

the lifting and hoisting mechanism and the front section component are connected in a hoisting way, and the front end of the front section component is hinged with the tail part of the turntable;

the front-section component is driven to descend through the lifting mechanism, so that the front end of the front-section component is supported on the ground.

Optionally, before the front end of the front section member is disconnected from the hinge of the tail part of the turntable, an included angle between the front section member and the rear section member is enlarged by a folding device in the folding mechanism, and then a pipeline of the folding mechanism is detached.

Optionally, when the folding and unfolding mechanism is towed by the towing swing mechanism, the outer end of the towing rope releasing section of the hoisting towing device is connected to the folding and unfolding mechanism.

Optionally, forming the lifting attachment of the lifting attachment mechanism to the anterior-segment component includes:

the outer end of the traction rope release section is connected with a traction connection structure of the telescopic lifting equipment;

unlocking the shared bracket and a standby locking structure in the telescopic lifting equipment;

releasing and extending the traction rope release section through the hoisting traction equipment so as to adjust the telescopic lifting equipment from an inclined arrangement to a vertical arrangement;

and the vertically arranged telescopic lifting equipment and the front-section component form hoisting connection.

According to the invention, the self-dismounting system is arranged at the tail part of the turntable of the crane, so that the front-section component of the folding and unfolding mechanism in the super-lifting counterweight amplitude-changing system can be hoisted by means of the lifting hoisting mechanism in the self-dismounting system, and the lifting of the front-section component is realized. Under the condition that the front end of the front section component is hinged with the tail part of the turntable, the folding and unfolding mechanism can be integrally pulled by virtue of a traction swinging mechanism in the self-dismounting system, so that the folding and unfolding mechanism can swing up and down around the tail part of the turntable. Therefore, no matter the folding and unfolding mechanism is assembled or disassembled, the whole suspension of the folding and unfolding mechanism can be realized through the cooperation of the lifting and hanging mechanism and the traction swing mechanism, so that the folding and unfolding mechanism can be assisted to rapidly complete the assembly or the disassembly. Therefore, the folding and unfolding mechanism does not need to additionally rent cranes in the self-dismounting process of the folding and unfolding mechanism, and the problem that a plurality of cranes are difficult to cooperate is solved, so that the dismounting cost and the dismounting difficulty can be greatly reduced, and the dismounting efficiency is greatly improved.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:

FIG. 1 is a partial schematic view of a crane according to an embodiment of the invention, illustrating a telescopic lifting apparatus in a standby locked position;

FIG. 2 is a partial schematic view of the crane of FIG. 1 in another state, with the telescopic lifting apparatus shown in a lifting position;

FIG. 3 is a partial schematic view of the crane of FIG. 1 in another condition, illustrating the telescopic lift apparatus in a standby locked position and with the outer end of the traction cable release section disconnected from the telescopic lift apparatus;

FIGS. 4 to 11 are schematic views showing steps that can be sequentially performed in a crane self-assembly method according to an embodiment of the present invention;

FIG. 12 is a schematic illustration of a prior art crane having a folding superlift counterweight luffing system;

fig. 13 is a schematic view of the crane of fig. 12 in another state, with the folding retraction mechanism of the folding super-lift counterweight luffing system shown in a fully deployed state.

Reference numerals illustrate:

1. telescopic lifting equipment with shared support 2

3. Hoisting traction equipment 4 pulley

5. Super-lifting counterweight suspension pull plate of turntable 6

7. Folding and unfolding mechanism for super-lifting counterweight base 8

11. Traction connection structure of turntable propeller strut 21

22. Spare locking structure 31 traction cable releasing section

81. Front section member 82 rear section member

83. Folding and unfolding device

Detailed Description

The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the embodiments of the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" or "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the positional relationship of the various components with respect to one another in the vertical, vertical or gravitational directions.

The invention will be described in detail below with reference to the drawings in connection with exemplary embodiments.

Referring to fig. 1 to 11, a first exemplary embodiment of the present invention provides a crane including a turntable 5, a super-lift counterweight luffing system, and a self-dismounting system, wherein the super-lift counterweight luffing system employs a folding super-lift counterweight luffing system.

Referring to fig. 11, the folding superlift counterweight luffing system includes a superlift counterweight suspension pulling plate 6, a superlift counterweight base 7, and a folding retraction mechanism 8. The super-lift counterweight hanging pull plate 6 and the super-lift counterweight base 7 are arranged at the rear of the tail part of the turntable at intervals, the front end of the folding and unfolding mechanism 8 is hinged with the tail part of the turntable, and the rear end of the folding and unfolding mechanism 8, the bottom end of the super-lift counterweight hanging pull plate 6 and the top end of the super-lift counterweight base 7 are hinged. More specifically, the top end of the super-lift counterweight suspension boom 6 is suspended from the top end of the super-lift mast, and the folding and unfolding mechanism 8 includes a front-section member 81 and a rear-section member 82 that are hinged to each other, and a folding and unfolding device 83 (for example, a telescopic cylinder) whose both ends are respectively hinged to the front-section member 81 and the rear-section member 82. The front end of the front section member 81 is the front end of the folding mechanism 8, and the rear end of the rear section member 82 is the rear end of the folding mechanism 8.

The folding and unfolding device 83 drives the front section member 81 and the rear section member 82 to form folding and unfolding actions, so that the distance between the tail of the turntable and the super-lifting counterweight base 7 can be adjusted. That is, when the folding and unfolding device 83 drives the front section member 81 and the rear section member 82 to form a unfolding action, the angle between the front section member 81 and the rear section member 82 becomes large, so that the distance between the turntable tail and the super-lift counterweight base 7 can be increased; when the folding and unfolding device 83 drives the front section member 81 and the rear section member 82 to form a folding action, the included angle between the front section member 81 and the rear section member 82 becomes smaller, so that the distance between the tail of the turntable and the super-lifting counterweight base 7 can be shortened.

In addition, the self-dismounting system is arranged at the tail part of the turntable and comprises a lifting and hoisting mechanism and a traction swing mechanism. On the one hand, the front-stage member 81 can be lifted by means of the lifting mechanism, so that the front-stage member 81 can be lifted. On the other hand, when the front end of the front member 81 is hinged to the turntable tail, the folding and unfolding mechanism 8 can be integrally pulled by the pulling and swinging mechanism, so that the folding and unfolding mechanism 8 can swing up and down around the turntable tail. Therefore, no matter the folding and unfolding mechanism 8 is assembled or disassembled, the whole suspension of the folding and unfolding mechanism 8 can be realized through the cooperation of the lifting and hanging mechanism and the traction swing mechanism, so that the folding and unfolding mechanism 8 can be assisted to rapidly complete the assembly or the disassembly.

Therefore, in the self-dismounting process of the folding and unfolding mechanism 8, the additional renting crane is not needed, and the problem that a plurality of cranes are difficult to cooperate is solved, so that the dismounting cost and the dismounting difficulty can be greatly reduced, and the dismounting efficiency is greatly improved.

More specific embodiments of the self-assembly or self-disassembly of the folding and unfolding mechanism 8 by the crane will be described further below, before this, the different embodiments of the self-assembly and disassembly system will be described below.

In an embodiment, referring to fig. 1 to 3, the self-dismounting system further comprises a common support 1 extending obliquely backward from the top surface of the turntable tail to beyond the turntable tail, wherein the common support 1 can be a new special support or an existing structure arranged on the turntable tail, for example, a turntable propeller strut 11 or a turntable mast arranged on the top surface of the turntable tail existing in a crane can be used as the common support 1.

The lifting and lifting mechanism can comprise a telescopic lifting device 2, the telescopic lifting device 2 can be hung at the top end of the shared support 1, and the top end of the shared support 1 exceeds the tail part of the turntable, so that the telescopic lifting device 2 can lift the front-section member 81 without interference and drive the front-section member 81 to lift through the vertical telescopic action of the telescopic lifting and lifting device, and the front-section member 81 can be driven to lift and the front-section member 81 can not collide with the tail part of the turntable when being lifted.

The traction swing mechanism may include a winding traction apparatus 3 provided at the top surface of the turntable tail and a pulley 4 provided in the common support 1, the winding traction apparatus 3 including a drum and a traction rope wound on the drum, the traction rope being releasable or retractable by rotation of the drum. The part of the traction cable which is released outwards is formed into a traction cable release section 31, and the traction cable release section 31 is lapped on the pulley 4 and can pull any position of the folding and unfolding mechanism 8, so that the folding and unfolding mechanism 8 can be integrally pulled under the condition that the front end of the front section member 81 is hinged with the tail part of the turntable, and the folding and unfolding mechanism 8 can be driven to swing up and down around the tail part of the turntable through the rotation of the winding drum.

Further, the top end of the telescopic lifting apparatus 2 and the top end of the common bracket 1 may be provided to be hinged to each other, so that the telescopic lifting apparatus 2 can swing back and forth around the top end of the common bracket 1. Thus, when the front section member 81 needs to be lifted, the telescopic lifting device 2 can be swung to a specific position to lift the front section member 81 without interference, so that the front section member 81 can be driven to lift and the front section member 81 can not collide with the tail of the turntable when lifted. When the front section member 81 is not required to be lifted, the telescopic lifting device 2 can be swung to another specific position for standby, for example, when the folding and unfolding mechanism 8 is integrally pulled by the traction swinging mechanism, the telescopic lifting device 2 can be used for standby, and at the moment, if the telescopic lifting device 2 is obliquely arranged relative to the horizontal plane and is close to the shared bracket 1, the telescopic lifting device can be prevented from colliding with the bottom end of the telescopic lifting device 2 when the folding and unfolding mechanism 8 integrally swings upwards, so that the folding and unfolding mechanism 8 can smoothly execute the upward swinging operation.

Note that, in this embodiment, the manner of driving the entire telescopic lifting apparatus 2 to swing back and forth is not limited, and for example, a dedicated mechanism such as a telescopic mechanism or a folding mechanism may be provided between the telescopic lifting apparatus 2 and the common support 1 to drive the entire telescopic lifting apparatus 2 to swing back and forth. Alternatively, in order to simplify the assembly and disassembly of the self-assembly and disassembly system, the traction swing mechanism can be used for driving the whole telescopic lifting device 2 to swing back and forth, and a special mechanism for driving the whole telescopic lifting device 2 to swing back and forth is not required to be additionally arranged.

In an embodiment in which the telescopic lifting apparatus 2 can be driven to swing back and forth as a whole by using the traction swing mechanism, the telescopic lifting apparatus 2 includes a traction connection structure 21 detachably connected to the outer end of the traction cable releasing section 31 and a standby locking structure 22 detachably connected to the common support 1, and the traction connection structure 21 may be, for example, a hanging ring or the like, and the standby locking structure 22 may be, for example, a pin-shaft fitting structure or the like. By means of the rotation of the drum for adjusting the length of the traction cable release section 31, the telescopic lifting device 2 can be swung between a lifting and hoisting position and a standby locking position under traction of the traction cable release section 31.

In the lifting position, the telescopic lifting apparatus 2 is vertically set so as to be able to lift the front-stage member 81. In the standby locked position, the telescopic lifting apparatus 2 is tilted and can be locked in the common support 1 by the standby locking structure 22, and in the case where the telescopic lifting apparatus 2 is already locked in the common support 1, it is unnecessary to continue pulling the telescopic lifting apparatus 2, so that the connection of the outer end of the traction cable release section 31 and the traction connection structure 21 can be disconnected.

In addition, when the folding and unfolding mechanism 8 needs to be integrally towed by the towing swing mechanism under the condition that the front end of the front section member 81 is hinged with the tail part of the turntable, the outer end of the towing rope releasing section 31 can be disconnected from the towing connection structure 21, and the outer end of the towing rope releasing section 31 is connected to any position of the folding and unfolding mechanism 8, so that the integral towing of the folding and unfolding mechanism 8 is realized.

In one embodiment, a turret propeller frame 11 or a turret mast which is arranged on the top surface of the tail part of the turret and is existing in the crane is used as a shared bracket 1, and the traction swing mechanism is utilized to drive the whole telescopic lifting device 2 to swing back and forth. Therefore, the composition of the self-dismounting system can be greatly simplified, the number of parts in the system is reduced, the total weight of the crane is reduced, and the production and installation costs are saved.

The second exemplary embodiment of the present invention also provides a crane self-assembly method, wherein the crane includes a self-assembly and disassembly system disposed at the tail of the turntable, the self-assembly and disassembly system including a lifting and hoisting mechanism capable of driving the front section member 81 to lift and a traction swing mechanism capable of towing the folding and unfolding mechanism 8 to swing around the tail of the turntable in a state that the front end of the front section member 81 is kept hinged with the tail of the turntable. The crane self-assembly method of the present exemplary embodiment includes:

step S1: the folding and unfolding mechanism 8 to be assembled is placed at the rear of the tail part of the turntable;

step S2: lifting the front section member 81 by a lifting mechanism to hinge the front end of the front section member 81 with the tail of the turntable;

step S3: the folding and unfolding mechanism 8 is pulled to swing upwards around the tail of the turntable by the traction swing mechanism so as to hinge the rear end of the rear section member 82, the bottom end of the super-lifting counterweight hanging pull plate 6 and the top end of the super-lifting counterweight base 7.

By executing the steps S1 to S3, the crane can realize the self-assembly of the folding and unfolding mechanism 8 by utilizing the cooperation of the lifting and hoisting mechanism and the traction swing mechanism, so that additional renting cranes are not needed, the problem that a plurality of cranes are difficult to cooperate is solved, the assembly cost and the assembly difficulty can be greatly reduced, and the assembly efficiency is greatly improved.

It should be noted that, before the crane self-assembly method of the present exemplary embodiment is performed, the top end of the super-lift counterweight suspension pull plate 6 is generally suspended in advance from the top end of the super-lift mast, and thus the relative position of the bottom end of the super-lift counterweight suspension pull plate 6 and the turret tail has been predetermined.

After step S2 and before step S3 is performed, if the distance between the hinge between the front end of the folding mechanism 8 and the tail of the turntable and the bottom end of the super-lift weight hanging plate 6 is smaller than the distance between the front and rear ends of the folding mechanism 8 at this time, the distance between the front and rear ends of the folding mechanism 8 needs to be properly shortened, so that the folding mechanism 8 swings upward to be just in a position capable of being hinged to the bottom end of the super-lift weight hanging plate 6 when step S3 is performed. For this case, referring to fig. 6 and 7, before step S3 is performed, a pipeline (e.g., a hydraulic pipeline, an electric pipeline, etc.) of the folding and unfolding mechanism 8 may be installed, so that the crane may control the folding and unfolding device 83 in the folding and unfolding mechanism 8, so as to reduce the included angle between the front section member 81 and the rear section member 82 by controlling the folding and unfolding device 83, thereby properly shortening the distance between the front end and the rear end of the folding and unfolding mechanism 8. Obviously, in the step of reducing the angle between the front section member 81 and the rear section member 82, the crane does not control the folding and unfolding apparatus 83 by means of an external apparatus, and therefore this step also belongs to a specific embodiment under the self-assembly method.

In one embodiment, the self-dismounting system comprises a common bracket 1 extending obliquely backwards from the top surface of the turntable tail to beyond the turntable tail. The lifting mechanism comprises a telescopic lifting device 2, and the telescopic lifting device 2 can be suspended at the top end of the shared bracket 1. The traction swing mechanism comprises a winch traction device 3 arranged on the top surface of the tail part of the turntable and a pulley 4 arranged in the shared bracket 1, wherein the winch traction device 3 comprises a winding drum and a traction rope wound on the winding drum, and the traction rope can be released or recovered through the rotation of the winding drum. The part of the traction cable which is released outwards is formed into a traction cable release section 31, the traction cable release section 31 is lapped on the pulley 4 and can traction any position of the folding and unfolding mechanism 8, and the folding and unfolding mechanism 8 can be driven to swing up and down around the tail of the rotating table through the rotation of the winding drum.

More specifically, the top end of the telescopic lifting apparatus 2 is hinged to the top end of the common bracket 1 so that the telescopic lifting apparatus 2 can swing back and forth around the top end of the common bracket 1. The telescopic lifting apparatus 2 comprises a traction connection structure 21 detachably connectable to the outer end of the traction cable release section 31 and a back-up locking structure 22 detachably connectable to the common support 1. By means of the rotation of the drum for adjusting the length of the traction cable release section 31, the telescopic lifting device 2 can be swung between a lifting and hoisting position and a standby locking position under traction of the traction cable release section 31. In the lifting position, the telescopic lifting apparatus 2 is vertically set so as to be able to lift the front-stage member 81. In the standby locked position, the telescopic lifting device 2 is tilted and can be locked in the common support 1 by the standby locking structure 22.

Based on the structural arrangement of the present embodiment, step S2 may include:

step S21: the outer end of a traction rope releasing section 31 in the hoisting traction equipment 3 is connected with a traction connection structure 21 in the telescopic lifting equipment 2;

step S22: unlocking the common bracket 1 from the standby locking structure 22 in the telescopic lifting device 2;

step S23: releasing the extension traction rope release section 31 by the hoisting traction apparatus 3 to adjust the telescopic lifting apparatus 2 from the inclined setting to the vertical setting;

step S24: the front-stage member 81 is lifted by the vertically placed telescopic lifting apparatus 2 to hinge the front end of the front-stage member 81 with the turntable tail.

In the case where step S2 includes steps S21 to S24, step S3 may include:

step S31: disconnecting the outer end of the traction cable release section 31 from the traction connection structure 21;

step S32: the outer end of the traction rope releasing section 31 is connected with the folding and unfolding mechanism 8;

step S33: the shortened traction rope releasing section 31 is recovered by the hoisting traction equipment 3 to draw the folding and unfolding mechanism 8 to swing upwards around the tail of the revolving stage.

In the case where step S3 includes steps S31 to S33, the shortening traction rope releasing section 31 may be recovered by the hoisting traction apparatus 3 to adjust the telescopic lifting apparatus 2 from the vertical setting to the tilt setting before step S31 is performed, so that the tilt-set telescopic lifting apparatus 2 is re-locked in the common bracket 1 by the standby 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 step S33 is performed, and the folding and unfolding mechanism 8 can be ensured to smoothly perform the upward swing operation.

In one embodiment, the crane self-assembly method may sequentially perform the steps shown in fig. 4 to 11, wherein the pipeline of the folding and unfolding mechanism 8 is installed when the step of fig. 6 is performed.

The third exemplary embodiment of the present invention also provides a self-dismounting method for a crane, wherein the crane includes a self-dismounting system disposed at the tail of the turntable, the self-dismounting system includes a lifting and hoisting mechanism capable of driving the front section member 81 to lift and a traction swing mechanism capable of towing the folding and unfolding mechanism 8 to swing around the tail of the turntable in a state that the front end of the front section member 81 is kept hinged with the tail of the turntable. The crane self-disassembly method of the present exemplary embodiment includes:

step S1': the traction swing mechanism and a folding and unfolding mechanism 8 assembled in the crane are connected in a traction way, and the rear end of the rear section member 82, the bottom end of the super-lifting counterweight hanging pull plate 6 and the top end of the super-lifting counterweight base 7 are hinged;

step S2': the folding and unfolding mechanism 8 is pulled to swing downwards around the tail of the turntable by the traction swinging mechanism so that the rear end of the rear section member 82 is supported on the ground;

step S3': the lifting and hoisting mechanism and the front section member 81 are connected in a hoisting way, and the front end of the front section member 81 is hinged with the tail part of the turntable;

step S4': the front-section member 81 is driven to descend by the lifting and hanging mechanism so that the front end of the front-section member 81 is supported on the ground.

Through executing step S1 'to step S4', the crane can realize the self-disassembly of the folding and unfolding mechanism 8 by utilizing the cooperation of the lifting and hanging mechanism and the traction swing mechanism, so that an additional renting crane is not needed, the problem that a plurality of cranes are difficult to cooperate is solved, the disassembly cost and the disassembly difficulty can be greatly reduced, and the disassembly efficiency is greatly improved.

In one embodiment, before the front end of the front section member 81 is disconnected from the turntable tail (e.g., after step S2 'is performed and before step S3' is performed), the angle between the front section member 81 and the rear section member 82 may be increased by the folding device 83 in the folding mechanism 8 (e.g., the angle between the front section member 81 and the rear section member 82 is maximized so that the folding mechanism 8 is fully unfolded), and then the lines (e.g., hydraulic lines, electric lines, etc.) of the folding mechanism 8 may be removed.

In this way, when step S4' is performed, the folding and unfolding mechanism 8 can be placed on the ground more stably (especially, the stability is the highest when the folding and unfolding mechanism 8 is fully unfolded), so that the probability that the folding and unfolding mechanism 8 falls down along the lateral direction is reduced, the risk of occurrence of a safety accident is reduced, and the risk of crashing or damaging the folding and unfolding mechanism 8 is reduced. On the other hand, the pipeline of the folding and unfolding mechanism 8 is detached before the front end of the front section member 81 is disconnected from the hinge of the tail part of the turntable, so that the pipeline is prevented from being pulled when the front section member 81 is lowered, and the pipeline is prevented from being damaged from the root.

Obviously, the step of the folding and unfolding apparatus 83 for enlarging the included angle between the front section member 81 and the rear section member 82 before the pipeline of the folding and unfolding mechanism 8 is detached can be directly performed by the crane without being controlled by an external device, and thus belongs to a specific embodiment under the self-detaching method.

In one embodiment, the self-dismounting system comprises a common bracket 1 extending obliquely backwards from the top surface of the turntable tail to beyond the turntable tail. The traction swing mechanism comprises a winch traction device 3 arranged on the top surface of the tail part of the turntable and a pulley 4 arranged in the shared bracket 1, wherein the winch traction device 3 comprises a winding drum and a traction rope wound on the winding drum, and the traction rope can be released or recovered through the rotation of the winding drum. The part of the traction cable which is released outwards is formed into a traction cable release section 31, the traction cable release section 31 is lapped on the pulley 4 and can traction any position of the folding and unfolding mechanism 8, and the folding and unfolding mechanism 8 can be driven to swing up and down around the tail of the rotating table through the rotation of the winding drum.

Based on the structural arrangement of the present embodiment, step S2' may include:

when the folding and unfolding mechanism 8 is pulled by the traction swing mechanism, the outer end of the traction rope release section 31 of the hoisting traction device 3 is connected to the folding and unfolding mechanism 8.

In this manner, the folding and unfolding mechanism 8 can be swung down around the platform tail by releasing the extended traction cable release section 31 to support the rear end of the rear section member 82 on the ground.

Further, the lifting mechanism comprises a telescopic lifting device 2, and the telescopic lifting device 2 can be suspended at the top end of the shared bracket 1. The top end of the telescopic lifting device 2 is hinged with the top end of the shared bracket 1, so that the telescopic lifting device 2 can swing back and forth around the top end of the shared bracket 1. The telescopic lifting apparatus 2 comprises a traction connection structure 21 detachably connectable to the outer end of the traction cable release section 31 and a back-up locking structure 22 detachably connectable to the common support 1. By means of the rotation of the drum for adjusting the length of the traction cable release section 31, the telescopic lifting device 2 can be swung between a lifting and hoisting position and a standby locking position under traction of the traction cable release section 31. In the lifting position, the telescopic lifting apparatus 2 is vertically set so as to be able to lift the front-stage member 81. In the standby locked position, the telescopic lifting device 2 is tilted and can be locked in the common support 1 by the standby locking structure 22.

Based on the structural arrangement of the present embodiment, step S3' may include:

step S31': the outer end of the traction rope releasing section 31 is connected with the traction connecting structure 21 of the telescopic lifting equipment 2;

step S32': unlocking the common bracket 1 from the standby locking structure 22 in the telescopic lifting device 2;

step S33': releasing the extension traction rope release section 31 by the hoisting traction apparatus 3 to adjust the telescopic lifting apparatus 2 from the inclined setting to the vertical setting;

step S34': the vertically arranged telescopic lifting device 2 is in a lifting connection with the front section member 81.

The foregoing details of the optional implementation of the embodiment of the present invention have been described in detail with reference to the accompanying drawings, but the embodiment of the present invention is not limited to the specific details of the foregoing implementation, and various simple modifications may be made to the technical solution of the embodiment of the present invention within the scope of the technical concept of the embodiment of the present invention, and these simple modifications all fall within the protection scope of the embodiment of the present invention.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

In addition, any combination of various embodiments of the present invention may be performed, so long as the concept of the embodiments of the present invention is not violated, and the disclosure of the embodiments of the present invention should also be considered.

Claims (15)

1. A self-dismounting system for a crane, comprising:

the lifting hoisting mechanism is arranged in the crane and can drive a front section member (81) of the folding and unfolding mechanism (8) to rise so as to hinge the front end of the front section member (81) with the tail part of the turntable or drive the front section member (81) to descend in a state that the front end of the front section member (81) is disconnected and hinged with the tail part of the turntable; and

the traction swing mechanism is arranged in the crane and can draw the folding and unfolding mechanism (8) to swing up and down around the tail of the turntable under the state that the front end of the front section member (81) is kept hinged with the tail of the turntable;

wherein, through the cooperation of lift hoist mechanism is used, the crane can be right folding receipts exhibition mechanism (8) is from the dismouting.

2. Self-dismounting system for a crane according to claim 1, wherein the self-dismounting system further comprises a common support (1) for extending obliquely backwards from the top surface of the turret tail to beyond the turret tail, the lifting and lowering mechanism comprises a telescopic lifting device (2) capable of being suspended from the top end of the common support (1) for lifting the front section member (81), the traction and swinging mechanism comprises a hoisting traction device (3) for being arranged on the top surface of the turret tail and a pulley (4) arranged in the common support (1), and a traction cable release section (31) in the hoisting traction device (3) is lapped on the pulley (4) and capable of towing the folding and unfolding mechanism (8).

3. Self-dismounting system for cranes according to claim 2, wherein the top end of the telescopic lifting device (2) is hinged to the top end of the common support (1), the telescopic lifting device (2) being able to swing back and forth around the top end of the common support (1).

4. A self-dismounting system for a crane according to claim 3, wherein the telescopic lifting device (2) comprises a traction connection structure (21) detachably connectable with the outer end of the traction cable release section (31) and a stand-by locking structure (22) detachably connectable with the common bracket (1), the telescopic lifting device (2) being capable of swinging between a lifting hoisting position and a stand-by locking position by traction of the traction cable release section (31);

in the lifting and hoisting position, the telescopic lifting device (2) is vertically arranged so as to be capable of hoisting the front section member (81), and in the standby locking position, the telescopic lifting device (2) is obliquely arranged and can be locked in the common support (1) through the standby locking structure (22).

5. Self-dismounting system for a crane according to claim 2, wherein the common support (1) is a turret propeller strut (11) or turret mast for being arranged on the top surface of the turret tail.

6. A crane comprising a self-dismounting system for a crane according to any one of claims 1 to 5.

7. A crane self-assembly method comprising:

the folding and unfolding mechanism (8) to be assembled is placed at the rear part of the tail part of the turntable;

lifting the front section member (81) by a lifting mechanism so as to hinge the front end of the front section member (81) with the tail part of the turntable;

the folding and unfolding mechanism (8) is pulled by the traction swing mechanism to swing upwards around the tail part of the turntable so as to hinge the rear end of the rear section component (82), the bottom end of the super-lifting counterweight hanging pull plate (6) and the top end of the super-lifting counterweight base (7).

8. The crane self-assembly method according to claim 7, wherein the pipeline of the folding and unfolding mechanism (8) is installed before the folding and unfolding mechanism (8) is pulled to swing upwards around the tail part of the turntable by the traction swing mechanism, and then an included angle between the front section member (81) and the rear section member (82) is reduced by a folding and unfolding device (83) in the folding and unfolding mechanism (8).

9. The crane self-assembly method according to claim 7, wherein lifting a front-stage member (81) by a lifting and hoisting mechanism to hinge a front end of the front-stage member (81) with the turret tail comprises:

the outer end of a traction rope releasing section (31) in hoisting traction equipment (3) is connected with a traction connection structure (21) in telescopic lifting equipment (2);

unlocking the common support (1) from a standby locking structure (22) in the telescopic lifting device (2);

releasing and extending the traction rope releasing section (31) through the hoisting traction device (3) so as to adjust the telescopic lifting device (2) from an inclined arrangement to a vertical arrangement;

and lifting the front section member (81) by the vertically arranged telescopic lifting device (2) so as to hinge the front end of the front section member (81) with the tail of the turntable.

10. The crane self-assembly method according to claim 9, wherein towing the folding and unfolding mechanism (8) to swing upward around the turret tail by a towing swing mechanism to hinge the rear end of the rear section member (82), the bottom end of the superlift counterweight suspension pulling plate (6), and the top end of the superlift counterweight base (7) includes:

disconnecting the outer end of the traction cable release section (31) from the traction connection structure (21);

connecting the outer end of the traction rope release section (31) to the folding and unfolding mechanism (8);

and recovering and shortening the traction rope releasing section (31) through the hoisting traction equipment (3) so as to draw the folding and unfolding mechanism (8) to swing upwards around the tail part of the turntable.

11. Crane self-assembly method according to claim 10, wherein before disconnecting the outer end of the traction rope release section (31) from the traction connection structure (21), shortening the traction rope release section (31) is retrieved by the hoisting traction device (3) to adjust the telescopic lifting device (2) from a vertical setting to a tilt setting such that the tilt-set telescopic lifting device (2) is re-locked in the common bracket (1) by the back-up locking structure (22).

12. A crane self-disassembly method comprising:

the traction swinging mechanism and a folding and unfolding mechanism (8) assembled in the crane are connected in a traction way and are disconnected with the rear end of a rear section member (82), the bottom end of the super-lifting counterweight hanging pull plate (6) and the top end of the super-lifting counterweight base (7) in a hinging way;

the folding and unfolding mechanism (8) is pulled to swing downwards around the tail of the rotating table by the pulling and swinging mechanism so that the rear end of the rear section member (82) is supported on the ground;

lifting and hoisting mechanisms and front-section members (81) are connected in a hoisting manner, and the front ends of the front-section members (81) are disconnected from the tail part of the turntable in a hinged manner;

the front-section member (81) is driven to descend through the lifting and hoisting mechanism, so that the front end of the front-section member (81) is supported on the ground.

13. The crane self-disassembly method according to claim 12, wherein before the front end of the front section member (81) is disconnected from the turntable tail, the included angle between the front section member (81) and the rear section member (82) is enlarged by a 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.

14. Crane self-dismounting method according to claim 12, wherein the outer end of the traction cable release section (31) of the hoisting traction device (3) is connected to the folding and unfolding mechanism (8) when the folding and unfolding mechanism (8) is towed by the traction swing mechanism.

15. The crane self-disassembly method according to claim 14, wherein forming a lifting connection of the lifting hoisting mechanism with the front section member (81) comprises:

the outer end of the traction rope release section (31) is connected with a traction connection structure (21) of the telescopic lifting equipment (2);

unlocking the common support (1) from a standby locking structure (22) in the telescopic lifting device (2);

releasing and extending the traction rope releasing section (31) through the hoisting traction device (3) so as to adjust the telescopic lifting device (2) from an inclined arrangement to a vertical arrangement;

and the vertically arranged telescopic lifting device (2) and the front section member (81) form hoisting connection.