Folding type wind collecting system for crane and using method of folding type wind collecting system

Abstract

The invention relates to the technical field of crane hoisting, in particular to a folding type wind collecting system for a crane and a using method.The folding type wind collecting system comprises an arm frame, the arm frame is provided with a wind collecting mechanism, the wind collecting mechanism comprises a top folding support, a driving assembly, a wind collecting rope, a hook assembly and a first winch, and one end of the wind collecting rope is hinged to the top folding support; the other end of the wind cable is connected with a winding drum of the first winch after bypassing the hook assembly. In the process of hoisting the heavy object, through cooperation of the driving assembly and the first winch, the hook assembly ascends along with ascending of the heavy object, so that the pulling force in the horizontal direction is jointly provided for the heavy object through the wind cable rope and the hook assembly, the stability of the heavy object hoisting process is ensured, and use is easy and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of crane hoisting, and in particular to a foldable wind-catching system for a crane and a method of using the system. Background Art

[0002] When using a crane to lift large heavy objects, the heavy objects will inevitably shake in the air as they rise, especially in windy weather, when the wind in the environment causes the heavy objects to swing in the air, such as during the lifting process of offshore wind turbine blades.

[0003] Therefore, in the actual lifting process, it is usually necessary to use wind-catching wire ropes to assist in the lifting of heavy objects, that is, by connecting one end of multiple wind-catching wire ropes to the heavy objects, and the other end is pulled by multiple workers. During the lifting process of the heavy objects, the wind-catching wire ropes are manually pulled to provide pulling force in all directions to the heavy objects, thereby ensuring the stability of the heavy object's rising process.

[0004] However, the above-mentioned method of manually pulling the wind-catching wire rope, in actual use, on the one hand, has high requirements on labor costs and coordination, and on the other hand, in windy weather, manual pulling is more strenuous, and it is difficult to ensure the stability of the heavy object lifting process. The overall use is relatively inconvenient and there is room for improvement. Summary of the invention

[0005] In order to solve the problem that it is inconvenient to use the method of manually pulling the wind-catching wire rope in heavy object lifting operations, the present application provides a foldable wind-catching system for a crane and a method of using it.

[0006] In the first aspect, the present application provides a foldable wind-catching system for a crane, which adopts the following technical solution: A foldable wind-catching system for a crane comprises a boom of the crane, wherein the boom is provided with a wind-catching mechanism for assisting in lifting heavy objects, the wind-catching mechanism comprising a top folding bracket rotatably connected to the boom, a driving assembly arranged on the boom for driving the top folding bracket to rotate, a wind-catching rope arranged between the top folding bracket and the boom, a hook assembly arranged on the wind-catching rope, and a first winch arranged on the boom for driving the wind-catching rope to be retracted and unreeled, wherein one end of the wind-catching rope is hinged to the top folding bracket, and the other end of the wind-catching rope is connected to the drum of the first winch after passing around the hook assembly.

[0007] By adopting the above technical scheme, when in use, through the coordinated use of the wind rope, the hook assembly and the first winding machine, the lifting and lowering of the hook assembly is realized during the winding and unwinding process of the wind rope, so that when the hook assembly is connected to the heavy object, the hook assembly and the wind rope jointly provide horizontal pulling force to the heavy object, thereby ensuring the stability of the heavy object lifting process. The use is simple and convenient. At the same time, through the cooperation of the top folding bracket and the driving assembly, the spacing between the hook assemblies in the two groups of wind-catching mechanisms can be adjusted to adapt to heavy objects of different sizes. At the same time, the top folding bracket can be rotated and folded when not in use, which is convenient for the storage of the arm, and the overall device is more convenient to use.

[0008] Preferably, the driving assembly includes a first guide wheel rotatably arranged on the arm, a track guide rope arranged between the top folding bracket and the first guide wheel, and a second winch arranged on the arm for retracting and unwinding the track guide rope, one end of the track guide rope is hinged on the top folding bracket, and the other end of the track guide rope is hinged to the top folding bracket after passing through the first guide wheel and the drum of the second winch in sequence, and a follower pulley group is arranged between the track guide rope and the wind rope.

[0009] By adopting the above technical solution, when in use, the track guide rope forms a closed-loop connection through the cooperation of the second winch and the first guide wheel, that is, one end of the track guide rope is unwound and the other end is synchronously reeled in, thereby realizing the synchronization of unwinding and reeling of the track guide rope, thereby ensuring that the track guide rope is always in a tensioned state. At the same time, when the second winch stops unwinding, the mechanical locking of the track guide rope is also achieved, indirectly improving the carrying capacity of the track guide rope.

[0010] Preferably, the hook assembly includes a mounting seat, a second guide wheel rotatably arranged at one end of the mounting seat, and a hook body fixedly connected to an end of the mounting seat away from the second guide wheel. One end of the wind rope is connected to the drum of the first winch after passing around the follower pulley group and the second guide wheel.

[0011] By adopting the above technical solution, when in use, through the cooperation of the second guide wheel and the guy rope, the hook assembly as a whole can be dynamically adjusted as the weight is lifted, thereby ensuring the stability of the connection between the hook body and the weight.

[0012] Preferably, the follower pulley group includes a triangular seat body, a first guide wheel, a second guide wheel and a third guide wheel rotatably arranged on the triangular seat body, the first guide wheel, the second guide wheel and the third guide wheel are distributed in a triangle, one end of the track guide rope passes through the first guide wheel, the first guide wheel and the drum of the second winch in sequence and is hinged to the top folding bracket, one end of the wind rope passes through the second guide wheel, the second guide wheel and the third guide wheel in sequence and is connected to the drum of the first winch.

[0013] By adopting the above technical solution, when in use, through the cooperation of the first guide wheel, the second guide wheel and the third guide wheel, the synchronous movement of the triangular seat is achieved under the action of the wind rope and the track guide rope, thereby ensuring that during the lifting process of the heavy object, the wind rope always provides horizontal pulling force to the heavy object, thereby ensuring the stability of the heavy object lifting process.

[0014] Preferably, a limiting component for limiting the rotation angle of the top folding bracket is also provided between the top folding bracket and the arm bracket.

[0015] By adopting the above technical solution, when in use, the rotation angle of the top folding bracket is limited by the limiting component, thereby ensuring the stability of the top folding bracket and the track guide rope during the lifting of heavy objects, thereby ensuring the movement stability of the follower pulley group.

[0016] Preferably, the limiting assembly includes an ear seat fixed on the arm, and a lifting wire rope arranged between the ear seat and the top folding bracket, one end of the lifting wire rope is hinged to the ear seat, and the other end of the lifting wire rope is hinged to one end of the top folding bracket away from the arm.

[0017] By adopting the above technical solution, when in use, by setting the lifting wire rope, the rotation process of the top folding bracket is limited without affecting the rotation, folding and storage of the top folding bracket, which is simple and convenient to use.

[0018] Preferably, the first winch is provided with a first clamping assembly for ensuring the winding tightness of the wind rope, and the second winch is provided with a second clamping assembly for ensuring the winding tightness of the track guide rope.

[0019] By adopting the above technical solution, when in use, through the cooperation of the first clamping assembly and the second clamping assembly, the tension of the wind rope and the track guide rope is ensured during the winding and unwinding process of the wind rope and the track guide rope, thereby ensuring the stability of the heavy object lifting process.

[0020] In a second aspect, the present application provides a method for using a foldable wind-catching system for a crane, which adopts the following technical solution: A method for using a foldable wind-catching system for a crane comprises the following steps: S1. Install the wind-catching system on the boom of the crane, adjust the tightness of the wind-catching rope, track guide rope and lifting wire rope, and connect the main lifting device on the boom of the crane with the heavy object; S2, unwinding the second hoist drum by rotation, driving the top folding bracket (21) to rotate and unfold; S3, unwind the windlass by the first winch to ensure that the windlass is unwound to a certain length, and then the staff connects the hook assembly to the designated position of the heavy object; S4, start the crane, and while the weight is slowly rising, control the first winch to reel in the guy rope so that the guy rope provides horizontal pulling force for the weight; S5. When the heavy object is lifted to the specified height and installed, the staff separates the hook assembly from the heavy object, and then controls the first winch to reel in the windlass to the initial state; S6, controlling the second winch drum to rotate in the opposite direction to reel in, thereby driving the top folding bracket to fold to the initial state, so as to facilitate the subsequent storage of the crane boom.

[0021] By adopting the above technical solution, during the process of lifting heavy objects, the amplitude of the shaking of the heavy objects due to the influence of external wind force is reduced, thereby ensuring the stability of the heavy object's rising process. On the one hand, it ensures the safety of the heavy object lifting process, and on the other hand, it improves the convenience of the overall use of the device.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the coordinated use of the wind rope, the hook assembly and the first winding machine, the lifting and lowering of the hook assembly is realized during the winding and unwinding process of the wind rope, so that when the hook assembly is connected to the heavy object, the hook assembly and the wind rope jointly provide horizontal pulling force to the heavy object, thereby ensuring the stability of the heavy object hoisting process. The use is simple and convenient. At the same time, through the coordination of the top folding bracket and the driving assembly, the spacing of the hook assemblies in the two sets of wind-grabbing mechanisms can be adjusted to adapt to heavy objects of different sizes. At the same time, the top folding bracket can be rotated and folded when not in use, which is convenient for the storage of the boom, and the overall device is more convenient to use; 2. The closed-loop connection of the track guide rope realizes the synchronization of reeling and unreeling of the track guide rope, thereby ensuring that the track guide rope is always in a tensioned state. At the same time, when the second winch stops unreeling, the mechanical locking of the track guide rope is also realized, which indirectly improves the bearing capacity of the track guide rope; 3. By setting up the lifting wire rope, the rotation process of the top folding bracket is limited without affecting the rotation, folding and storage of the top folding bracket, which further ensures the stability of the track wire rope during the lifting of heavy objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram mainly showing the overall structure in the first embodiment of the present application; Figure 2 It is a schematic diagram mainly showing the structure of the wind-catching mechanism in the first embodiment of the present application; Figure 3 It is a schematic diagram mainly showing the top folding bracket structure in the first embodiment of the present application; Figure 4 It is a schematic diagram mainly showing the structure of the driving assembly in the first embodiment of the present application; Figure 5 It is a schematic diagram mainly showing the structure of the second clamping assembly in the first embodiment of the present application; Figure 6 It is a schematic diagram mainly showing the structure of the follower pulley block in the first embodiment of the present application; Figure 7 It is a schematic diagram mainly showing the structure of the first clamping assembly in the first embodiment of the present application; Figure 8 It is a schematic diagram mainly showing the structure of the limit assembly in the first embodiment of the present application; Fig. 9 It is a schematic diagram mainly showing the initial state of the heavy object lifting process in the first embodiment of the present application; Fig.10 It is a schematic diagram mainly showing the initial state of the heavy object lifting process in the first embodiment of the present application; Fig.11 It is a schematic diagram mainly showing the intermediate state of the heavy object lifting process in the first embodiment of the present application; Fig.12 It is a schematic diagram mainly showing the final state of the heavy object lifting process in the first embodiment of the present application; Fig.13 It is a schematic diagram mainly showing the unfolded state of the top folding bracket in the second embodiment of the present application; Fig.14 It is a schematic diagram mainly showing the extended state of the top folding bracket in the second embodiment of the present application; Fig.15 It is a schematic diagram mainly showing the installation structure of the top folding bracket in the third embodiment of the present application; Fig.16 yes Fig.15 The enlarged view of the structure of part A is mainly shown in the figure; Fig.17 It is a schematic diagram mainly showing the structure of the traction mechanism 8 in the fourth embodiment of the present application; Fig.18 It is a schematic diagram mainly showing the structure of the top support rod 81 in the fourth embodiment of the present application.

[0024] Figure numerals: 1, arm; 11, sliding seat; 12, second hydraulic cylinder; 13, positioning pin; 14, driven gear; 15, winding wheel; 16, guide rope; 17, rack; 2, wind-catching mechanism; 21, top folding bracket; 211, first frame; 212, second frame; 213, first hydraulic cylinder; 22, driving assembly; 221, first guide wheel; 222, track guide rope; 2221, load-bearing guide rope; 2222, folding and retracting rope; 223, second winch; 23, wind-catching rope; 24, hook assembly; 241, mounting seat; 242, second guide wheel; 243, hook body; 25, first winch; 26, connecting seat; 3, follower pulley block; 31, Triangular seat body; 32, first guide wheel; 33, second guide wheel; 34, third guide wheel; 4, limit assembly; 41, ear seat; 42, pulling wire rope; 5, first clamping assembly; 51, second fixed seat; 52, second support arm; 53, second abutment wheel; 54, tension spring; 6, second clamping assembly; 61, first fixed seat; 62, first support arm; 63, first abutment wheel; 64, abutment bolt; 7, third winch; 8, traction mechanism; 81, top support rod; 811, first rod body; 812, second rod body; 813, third hydraulic cylinder; 82, third fixed seat; 83, fourth winch; 84, lateral traction rope; 9, drive motor; 10, top traction rope. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 -Attached Fig.18 This application is described in further detail.

[0026] The embodiment of the present application discloses a foldable wind-catching system for a crane and a method of using the system.

[0027] Embodiment 1: Reference Figure 1 and Figure 2 A foldable wind-catching system for a crane comprises a horizontally placed crane boom 1, on which a wind-catching mechanism 2 is arranged, and the wind-catching mechanism 2 is used to assist in lifting heavy objects to ensure the stability of the heavy object lifting process. The wind-catching mechanism 2 is arranged in several groups. In the present embodiment, the wind-catching mechanism 2 is preferably arranged in two groups, and the two groups of wind-catching mechanisms 2 are symmetrically distributed on both sides of the boom 1 in the width direction.

[0028] Reference Figure 2 and Figure 3The wind-grabbing mechanism 2 includes a top folding bracket 21, a driving assembly 22, a wind-grabbing rope 23, a hook assembly 24 and a first winch 25, wherein one end of the top folding bracket 21 is hinged to the boom 1, and the other end of the top folding bracket 21 is welded and fixed with a connecting seat 26, the driving assembly 22 is arranged on the boom 1, and the driving assembly 22 is used to drive the top folding bracket 21 to rotate and adjust the angle, the first winch 25 is installed on the boom 1, the wind-grabbing rope 23 is arranged between the top folding bracket 21 and the first winch 25, and one end of the wind-grabbing rope 23 is hinged to the connecting seat 26, and the other end of the wind-grabbing rope 23 is connected to the drum of the first winch 25, and the hook assembly 24 is installed on the wind-grabbing rope 23, and the hook assembly 24 is used to connect heavy objects.

[0029] Reference Figure 3 and Figure 4 The driving assembly 22 consists of a first guide wheel 221, a track guide rope 222 and a second winch 223. The first guide wheel 221 is rotatably connected to the boom 1, and the first guide wheel 221 is located above the top folding bracket 21. The second winch 223 is installed on the boom 1, and the second winch 223 is located below the top folding bracket 21. The track guide rope 222 is located between the first guide wheel 221 and the second winch 223. One end of the track guide rope 222 is hinged to the connecting seat 26, and the other end of the track guide rope 222 is hinged to the bottom end of the connecting seat 26 after passing through the drums of the first guide wheel 221 and the second winch 223 in turn. A second clamping assembly 6 is also provided on the second winch 223.

[0030] Reference Figure 3 and Figure 4 When in use, the winding mode of the track guide rope 222 forms a closed-loop connection, so that when the second winch 223 unwinds, the track guide rope 222 moves accordingly, and under the guidance of the first guide wheel 221, one end of the track guide rope 222 unwinds and the other end reels synchronously, that is, the retraction and unwinding synchronization of the track guide rope 222 is achieved, and at the same time, the second clamping assembly 6 is cooperated to ensure that the track guide rope 222 always remains in a tensioned state, thereby driving the top folding bracket 21 to rotate stably.

[0031] Reference Figure 4 and Figure 5 The second clamping assembly 6 includes a first fixed seat 61 fixed to the second hoist 223 by bolts, a first support arm 62 rotating on the first fixed seat 61, a first abutment wheel 63 rotatably connected to the first support arm 62 at one end away from the first fixed seat 61, and an abutment bolt 64 arranged on the first fixed seat 61, the first abutment wheel 63 abuts against the track guide rope 222 wound on the drum of the second hoist 223, the abutment bolt 64 is threadedly connected to the first fixed seat 61, and the end of the abutment bolt 64 passes through the first fixed seat 61 and abuts against the side wall of the first support arm 62.

[0032] Reference Figure 4 and Figure 5 When in use, first adjust the position of the first abutment wheel 63 by rotating the first support arm 62 until the first abutment wheel 63 presses the track guide rope 222 onto the drum of the second winch 223, then screw the abutment bolt 64 so that the end of the abutment bolt 64 abuts against the first support arm 62, thereby limiting the first support arm 62, thereby fixing the position of the first abutment wheel 63, and the overall use is simple and convenient.

[0033] Reference Figure 3 and Figure 6 A follower pulley group 3 is arranged between the track guide rope 222 and the wind rope 23, and the follower pulley group 3 includes a triangular seat body 31, a first guide wheel 32, a second guide wheel 33 and a third guide wheel 34. The triangular seat body 31 is a triangle as a whole. The first guide wheel 32, the second guide wheel 33 and the third guide wheel 34 are respectively located at a corner of the triangular seat body 31, and the first guide wheel 32, the second guide wheel 33 and the third guide wheel 34 are all rotatably connected to the triangular seat body 31. One end of the track guide rope 222 successively passes around the first guide wheel 221, the first guide wheel 32 and the drum of the second winch 223 and is hinged to the top folding bracket 21.

[0034] Reference Figure 4 and Figure 6 The hook assembly 24 includes a mounting seat 241, a second guide wheel 242 and a hook body 243. The second guide wheel 242 is rotatably connected to the left end of the mounting seat 241, and the hook body 243 is threadedly connected to the right end of the mounting seat 241. One end of the wind rope 23 passes through the second guide wheel 33, the second guide wheel 242 and the third guide wheel 34 in sequence and is connected to the drum of the first winch 25. At the same time, a first clamping assembly 5 is provided on the first winch 25. The first clamping assembly 5 is used to ensure that the wind rope 23 wound on the drum of the first winch 25 is always in a taut state.

[0035] Reference Figure 4 and Figure 7 The first clamping assembly 5 includes a second fixed seat 51 fixed to the first winch 25 by bolts, a second support arm 52 rotatably connected to the second fixed seat 51, a second abutment wheel 53 rotatably connected to one end of the second support arm 52 away from the second fixed seat 51, and a tension spring 54 arranged between the second fixed seat 51 and the second support arm 52. In this embodiment, the second support arm 52 is arranged in an L shape, and the second abutment wheel 53 presses the wind rope 23 against the drum of the first winch 25. One end of the tension spring 54 is hung on the second fixed seat 51, and the other end of the tension spring 54 is hung on the second support arm 52. When in use, the tension of the tension spring 54 on the second support arm 52 ensures that the position of the second abutment wheel 53 is fixed.

[0036] Reference Figure 2 and Figure 3 The first winch 25 unwinds the guy rope 23 and changes the distance between the mounting seat 241 and the boom 1, thereby facilitating the worker to connect the hook body 243 to the heavy object. During the lifting process of the heavy object, the first winch 25 rewinds the guy rope 23, and cooperates with the first clamping assembly 5 to ensure that the follower pulley group 3 and the second guide wheel 242 are always in a taut state, thereby ensuring the traction force of the guy rope 23 on the heavy object, and further ensuring the stability of the heavy object lifting process.

[0037] Reference Figure 2 and Figure 3 In addition, during the rising process of the heavy object, with the cooperation of the first guide wheel 32, the second guide wheel 33, the third guide wheel 34, the second guide wheel 242, the track guide rope 222 and the guy rope 23, the winding of the guy rope 23 will drive the follower pulley group 3 and the hook assembly 24 to move upward as a whole, and during the upward movement, the distance of the guy rope 23 between the follower pulley group 3 and the hook assembly 24 is gradually shortened, thereby ensuring that the guy rope 23 always provides horizontal pulling force to the heavy object.

[0038] Reference Figure 2 and Figure 8 In order to ensure that the top folding bracket 21 does not rotate downward during the lifting of heavy objects, a limiting assembly 4 is further arranged between the top folding bracket 21 and the arm 1. The limiting assembly 4 includes an ear seat 41 and a lifting wire rope 42. The ear seat 41 is fixed to the arm 1 by bolts, and the ear seat 41 is located above the top folding bracket 21. One end of the lifting wire rope 42 is hinged to the ear seat 41, and the other end of the lifting wire rope 42 is hinged to the end of the top folding bracket 21 away from the arm 1. When the lifting wire rope 42 is tightened, under the tension of the lifting wire rope 42, the top folding bracket 21 reaches the maximum rotation angle. In this embodiment, the maximum rotation angle is reached when the top folding bracket 21 is rotated to a horizontal state.

[0039] Reference Fig. 9 , Fig.10 , Fig.11 and Fig.12 A method for using a foldable wind-catching system for a crane comprises the following steps: S1. When the crane boom 1 is in a horizontal storage state, the wind-catching system is installed on the crane boom 1, and the tightness of the wind-catching rope 23, the track guide rope 222 and the lifting wire rope 42 is adjusted. Then, the crane is controlled to adjust the boom 1 to the hoisting state, and the main hoisting device on the crane boom 1 is connected to the heavy object; S2. According to the size of the heavy object to be hoisted, the track guide rope 222 is unwound by the second hoist 223 to adjust the unfolding angle of the top folding bracket 21. When the top folding bracket 21 is rotated to a horizontal state, under the pulling force of the lifting wire rope 42, the top folding bracket 21 reaches the maximum rotation angle, and the spacing between the two sets of wind-catching mechanisms 2 can also be adjusted to match the width of the heavy object; S3, unwinding the windlass 23 through the first winch 25, so that the follower pulley block 3 and the hook assembly 24 are lowered to a position convenient for the staff to move, and then the windlass 23 is continuously unwound under the pulling action of the staff until the staff connects the hook assembly to the designated position of the weight, so as to ensure that the windlass 23 is in a tensioned state during the unwinding process, so as to facilitate the subsequent rewinding; S4, control the crane to start hoisting the heavy object, and during the slow ascent of the heavy object, control the first hoist 25 to reel in the windlass 23, so that the windlass 23 is in a taut state, and the windlass 23 provides horizontal pulling force for the heavy object; S5. When the heavy object is lifted to the specified height and installed, the worker separates the hook assembly 24 from the heavy object, and then controls the first winch 25 to reel in the windlass 23 to restore the initial state; S6, controlling the second hoist 223 to reel in the track guide rope 222, thereby driving the top folding bracket 21 to rotate and fold to the initial state, so as to facilitate the subsequent storage of the crane boom 1.

[0040] The implementation principle of the embodiment of the present application is as follows: when in use, the track guide rope 222 is first unwound by the second hoist 223 to rotate the top folding bracket 21 to a horizontal state, and then the first hoist 25 is controlled to unwind the wind rope 23, so as to guide the follower pulley block 3 and the hook assembly 24 to descend close to the heavy object, and then the staff connects the hook body 243 with the heavy object, and controls the main hoisting device on the crane boom 1 to connect with the heavy object, and then the heavy object can be hoisted by the crane. During the hoisting process of the heavy object, the wind rope 23 is unwound by the first hoist 25. The wind-up makes the guy rope 23 always in a taut state, so that the guy rope 23 and the hook assembly 24 jointly provide horizontal pulling force to the weight, so as to ensure the stability of the weight rising process. After the weight rises to the specified position, the hook assembly 24 can be separated from the weight by the staff, and then the guy rope 23 is wound up by the first winch 25, and the track guide rope 222 is wound up by the second winch 223, so that the top folding bracket 21 is restored to the folded state, so as to facilitate the storage of the boom 1. The overall lifting process is safe and stable, and it is simple and convenient to use.

[0041] Embodiment 2: Reference Fig.12 and Fig.13The difference between this embodiment and embodiment 1 is that the top folding bracket 21 is composed of three parts: a first frame 211, a second frame 212 and a first hydraulic cylinder 213, wherein one end of the first frame 211 is hinged on the arm 1, the second frame 212 is slidably connected to the first frame 211, the cylinder body of the first hydraulic cylinder 213 is fixed on the first frame 211, and the piston rod of the first hydraulic cylinder 213 is fixedly connected to the second frame 212; when in use, the second frame 212 is controlled to slide by the extension and retraction of the piston rod of the first hydraulic cylinder 213, so as to adjust the length of the top folding bracket 21, so that the top folding bracket 21 can adapt to heavy objects of different sizes after being unfolded.

[0042] Reference Fig.12 and Fig.13 At the same time, a third winch 7 is installed on the boom 1 near the ear seat 41, one end of the pulling wire rope 42 is hinged to the end of the top folding bracket 21 away from the boom 1, and the other end of the pulling wire rope 42 is connected to the drum of the third winch 7 after passing around the ear seat 41; when in use, the ear seat 41 is used to limit the force angle between the pulling wire rope 42 and the top folding bracket 21 to ensure the stability of the top folding bracket 21 after positioning, and the third winch 7 is used to reel in and unreel the pulling wire rope 42, so that the pulling wire rope 42 can provide stable pulling force to the top folding bracket 21 with different inclination angles.

[0043] Reference Fig.12 and Fig.13 In addition, in the present embodiment, the track guide rope 222 is composed of two ropes: a load-bearing guide rope 2221 and a folding and releasing rope 2222. Among them, one end of the load-bearing guide rope 2221 is hinged to the connecting seat 26, and the other end of the load-bearing guide rope 2221 is fixed to the side wall of the drum of the second winch 223 after passing through the first guide wheel 221 and the first guide wheel 32 in sequence. One end of the folding and releasing rope 2222 is fixed to the side wall of the drum of the second winch 223, and the other end of the folding and releasing rope 2222 is hinged on the connecting seat 26; that is, when in use, the drum of the second winch 223 rotates clockwise, driving the load-bearing guide rope 2221 to reel in, and the folding and releasing rope 2222 to unreel synchronously, thereby driving the top folding bracket 21 to rotate to the folded state; the drum of the second winch 223 rotates counterclockwise, driving the load-bearing guide rope 2221 to unreel, and the folding and releasing rope 2222 to reel in synchronously, thereby driving the top folding bracket 21 to rotate to the unfolded state.

[0044] The implementation principle of the embodiment of the present application is as follows: when in use, the second winch 223 drum is first rotated clockwise to drive the load-bearing guide rope 2221 to be reeled in and the folding and releasing rope 2222 to be unreeled, so that the top folding bracket 21 is rotated to a specified angle until the distance between the two follower pulley groups 3 on both sides of the boom 1 matches the size of the weight and the rotation can be stopped. At this time, the second winch 223 pulls the track guide rope 222, and the third winch 7 pulls the lifting wire rope 42 to ensure the stability of the top folding bracket 21. If the distance between the two follower pulley groups 3 is still unable to adapt to the size of the weight when the top folding bracket 21 is rotated to a horizontal state, the track guide rope 222 can be unreeled by the second winch 223, the lifting wire rope 42 can be unreeled by the third winch 7, and the piston rod of the first hydraulic cylinder 213 is extended, thereby driving the second winch 223 to unreel the track guide rope 222, the third winch 7 to unreel the lifting wire rope 42, and the piston rod of the first hydraulic cylinder 213 to extend. The frame 212 slides out, thereby increasing the length of the top folding bracket 21. After the two follower pulley groups 3 are adapted to the size of the weight, the second frame 212 can be fixed, and then the first winch 25 unwinds the wind rope 23 to guide the follower pulley group 3 and the hook assembly 24 to descend close to the weight. Finally, the staff connects the hook body 243 with the weight and controls the main hoisting device on the crane boom 1 to connect with the weight, so that the weight can be hoisted by the crane. During the hoisting process, the unfolded state of the top folding bracket 21 is fixed by pulling the wire rope 42 and the track guide rope 222, and the moving direction of the follower pulley group 3 is guided by the load-bearing guide rope 2221. The traction of the heavy object is achieved through the cooperation of the wind rope 23, the follower pulley group 3 and the hook assembly 24, thereby ensuring that the overall hoisting process is safe and stable, and the use is simpler and more convenient.

[0045] Embodiment 3: Reference Fig.15 and Fig.16 The difference between this embodiment and embodiment 2 is that a sliding seat 11 is slidably arranged on the boom 1, and the sliding direction of the sliding seat 11 is parallel to the height direction of the boom 1. A second hydraulic cylinder 12 is arranged on the sliding seat 11, and a locating pin 13 is fixed to the piston rod end of the second hydraulic cylinder 12. A locating hole is opened at the top of the boom 1, and the locating pin 13 is plugged into the locating hole. A position sensor is installed at the top of the boom 1 near the locating hole, and the position sensor is used to detect the position of the sliding seat 11.

[0046] Reference Fig.15 and Fig.16The top folding bracket 21 is hingedly set on the sliding seat 11, and a driven gear 14, a winding wheel 15 and a guide rope 16 are also set on the sliding seat 11. The driven gear 14 and the winding wheel 15 are both rotatably set on the sliding seat 11, and the driven gear 14 and the winding wheel 15 are coaxially fixedly connected. A rack 17 is set on the arm 1, and the rack 17 extends along the height direction of the arm 1. The rack 17 is meshed with the driven gear 14. One end of the guide rope 16 is fixed to the top of the arm 1, and the other end of the guide rope 16 is fixed to the side wall of the winding wheel 15.

[0047] Reference Fig.15 and Fig.16 When in use, first the second hydraulic cylinder 12 is used to drive the positioning pin 13 to disengage from the positioning hole, and then the second winch 223 drum rotates counterclockwise to drive the load-bearing guide rope 2221 to unwind, and the folding and releasing rope 2222 to rewind synchronously, and at the same time, the third winch 7 unwinds and pulls the wire rope 42. At this time, the sliding seat 11 gradually descends under the action of gravity and the downward pulling force of the folding and releasing rope 2222. The sliding of the sliding seat 11 drives the driven gear 14 to rotate, thereby driving the reeling wheel 15 to synchronously unwind the guide rope 16, thereby ensuring the stability of the sliding seat 11 and the top folding bracket 21 during the descending process, until the top folding bracket 21 descends to the lowest point, it is convenient for the staff to maintain or disassemble and install the top folding bracket 21.

[0048] Reference Fig.15 and Fig.16 After the maintenance is completed, the drum of the second winch 223 rotates clockwise to drive the load-bearing guide rope 2221 to be reeled in, and the folding and releasing rope 2222 to be unreeled synchronously. Driven by the upward pulling force of the load-bearing guide rope 2221, the sliding seat 11 gradually rises, and at the same time, the third winch 7 reels in and pulls the wire rope 42; during the upward movement of the sliding seat 11, the driven gear 14 rotates in the opposite direction and drives the reeling wheel 15 to reel in the guide rope 16, thereby ensuring the stability of the sliding seat 11 and the top folding bracket 21 during the rising process. Until the position sensor detects that the sliding seat 11 has moved to the specified position, the second winch 223 can be controlled to stop running. At this time, the second hydraulic cylinder 12 drives the positioning pin 13 to be inserted into the positioning hole, so as to fix the sliding seat 11 on the top of the boom 1, and then continue to start the second winch 223 to realize the rotation and folding of the top folding bracket 21.

[0049] Reference Fig.15 and Fig.16 In addition, several groups of positioning holes can be opened on the arm 1, and the groups of positioning holes are evenly spaced along the height direction of the arm 1, so that the position of the sliding seat 11 can be adjusted by inserting the positioning pin 13 into the positioning holes at different positions, so as to be suitable for different working conditions and improve the overall application range of the device.

[0050] Embodiment 4: Reference Fig.17 and Fig.18 The difference between this embodiment and embodiment 3 is that two groups of traction mechanisms 8 are arranged at the top of the boom 1, and the two groups of traction mechanisms 8 are symmetrically distributed on both sides of the width direction of the boom 1, that is, the two groups of traction mechanisms 8 are arranged in a one-to-one correspondence with the two groups of wind-grabbing mechanisms 2, and the traction mechanism 8 includes a top support rod 81 arranged on the side wall of the boom 1, a third fixed seat 82 arranged at the end of the top support rod 81 away from the boom 1, a fourth winch 83 installed on the third fixed seat 82, and a lateral traction rope 84 wound on the drum of the fourth winch 83, the fourth winch 83 is used for retracting and unwinding the lateral traction rope 84, the movable end of the lateral traction rope 84 is detachably connected to the main hoist on the boom 1, and the traction direction of the lateral traction rope 84 on the heavy object is away from the boom 1.

[0051] Reference Fig.17 and Fig.18 When in use, the movable end of the lateral traction rope 84 descends with the main hoisting device on the boom 1, and then the staff connects the main hoisting device to the top of the heavy object, connects the movable end of the lateral traction rope 84 to the side of the heavy object away from the boom 1, and connects the hook assembly 24 to the side of the heavy object facing the boom 1. Therefore, during the lifting process, traction is provided to the opposite sides of the heavy object through the wind rope 23 and the lateral traction rope 84, respectively, so as to ensure the stability of the lifting process of the heavy object, and also facilitate the subsequent assembly of the heavy object by the staff.

[0052] Reference Fig.17 and Fig.18 At the same time, in order to facilitate the storage of the top support rod 81, the top support rod 81 is rotatably connected to the arm 1 at one end away from the third fixed seat 82, and a linkage shaft is provided on the arm 1. The linkage shaft is coaxially fixedly connected with the rotation shaft of the arm 1 in the two sets of traction mechanisms 8. A driving motor 9 is also provided on the arm 1, and the output shaft of the driving motor 9 is coaxially fixedly connected with the linkage shaft; when in use, the linkage shaft is driven to rotate by the output shaft of the driving motor 9, thereby driving the two sets of top support rods 81 to rotate synchronously. When the top support rod 81 rotates to be parallel to the arm 1, it is in the storage state, and when the top support rod 81 rotates to a horizontal state, it is the maximum rotation angle.

[0053] Reference Fig.17 and Fig.18In addition, in order to increase the extension length of the top support rod 81, so that the lateral traction rope 84 can better provide lateral pulling force for the heavy object, in this embodiment, the top support rod 81 includes a first rod body 811, a second rod body 812 and a third hydraulic cylinder 813, wherein one end of the first rod body 811 is fixed to the linkage shaft, the other end of the first rod body 811 is hinged to the second rod body 812, the third fixed seat 82 is arranged at an end of the second rod body 812 away from the first rod body 811, the cylinder end of the third hydraulic cylinder 813 is hinged to the first rod body 811, and the piston rod end of the third hydraulic cylinder 813 is hinged to the second rod body 812, and a top traction rope 10 is also arranged between the third fixed seat 82 and the top end of the boom 1, and a fifth winch is arranged at the top end of the boom 1, one end of the top traction rope 10 is wound around the drum of the fifth winch, and the other end of the top traction rope 10 is hinged to the third fixed seat 82.

[0054] Reference Fig.17 and Fig.18 When in use, the piston rod of the third hydraulic cylinder 813 is extended and retracted to drive the second rod body 812 and the first rod body 811 to rotate relative to each other, so as to adjust the angle between the second rod body 812 and the first rod body 811, thereby adjusting the distance between the two ends of the top support rod 81, that is, when the piston rod of the third hydraulic cylinder 813 is in a retracted state, the second rod body 812 and the first rod body 811 are in a folded state, and the angle between the second rod body 812 and the first rod body 811 is an acute angle. When the piston rod of the third hydraulic cylinder 813 is extended until it is fully extended, the second rod body 812 and the first rod body 811 are in an unfolded state. At this time, the angle between the second rod body 812 and the first rod body 811 is an obtuse angle and is close to parallel. As the second rod body 812 rotates, the fifth winch is retracted and unreeled at the same time, and the chair adjusts the length of the top traction rope 10, thereby providing support for the third fixed seat 82 through the top traction rope 10.

[0055] The implementation principle of the embodiment of the present application is as follows: when it is necessary to hoist a heavy object, the movable end of the lateral traction rope 84 is lowered along with the main hoisting device of the boom 1 to be close to the heavy object, and the hook assembly 24 is also lowered to be close to the heavy object, and then the staff connects the main hoisting device, the hook assembly 24 and the lateral traction rope 84 to the heavy object respectively, and then the heavy object can be lifted by winding up the main hoisting device, winding up the wind rope and synchronously winding up the lateral traction rope 84. During the lifting process, the lateral traction rope 84 and the wind rope are used to pull the opposite sides of the heavy object, which ensures the stability of the heavy object lifting process on the one hand, and can also be adjusted by changing the tightness of the lateral traction rope 84 or the wind rope on the other hand. The lifting position of the heavy object is used to facilitate the subsequent assembly of the heavy object; when the heavy object is lifted to the specified position and fixed, the staff will separate the hook assembly 24, the main lifting device and the lateral traction rope 84 from the heavy object respectively, and re-hang the lateral traction rope 84 on the main lifting device, so that it gradually returns to its initial state as the main lifting device rises and resets; during use, the length of the top support rod 81 can also be adjusted by telescoping the piston rod of the third hydraulic cylinder 813, so as to adjust the direction of the traction force of the lateral traction rope 84 on the heavy object, which is more conducive to ensuring the stability of the lifting of the heavy object. The overall use is simple and convenient, and after use, the top support rod 81 can be rotated to make it rotated to a folded state for easy storage.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foldable wind-catching system for a crane, comprising a boom (1) of the crane, characterized in that: The boom (1) is provided with a wind-catching mechanism (2) for assisting the lifting of heavy objects, the wind-catching mechanism (2) comprising a top folding bracket (21) rotatably connected to the boom (1), a driving assembly (22) arranged on the boom (1) for driving the top folding bracket (21) to rotate, a wind-catching rope (23) arranged between the top folding bracket (21) and the boom (1), a hook assembly (24) arranged on the wind-catching rope (23), and a first winch (25) arranged on the boom (1) for driving the wind-catching rope (23) to be retracted and unreeled, one end of the wind-catching rope (23) being hinged on the top folding bracket (21), and the other end of the wind-catching rope (23) being connected to the drum of the first winch (25) after passing through the hook assembly (24).

2. A foldable wind-catching system for a crane according to claim 1, characterized in that: The driving assembly (22) comprises a first guide wheel (221) rotatably arranged on the boom (1), a track guide rope (222) arranged between the top folding bracket (21) and the first guide wheel (221), and a second winch (223) arranged on the boom (1) for retracting and unreeling the track guide rope (222); one end of the track guide rope (222) is hinged on the top folding bracket (21); the other end of the track guide rope (222) is hinged to the top folding bracket (21) after passing through the first guide wheel (221) and the drum of the second winch (223) in sequence; and a follower pulley group (3) is arranged between the track guide rope (222) and the wind rope (23).

3. A foldable wind-catching system for a crane according to claim 2, characterized in that: The hook assembly (24) comprises a mounting seat (241), a second guide wheel (242) rotatably arranged at one end of the mounting seat (241), and a hook body (243) fixedly connected to one end of the mounting seat (241) away from the second guide wheel (242); one end of the wind rope (23) passes around the follower pulley group (3) and the second guide wheel (242) and is connected to the drum of the first winch (25).

4. A foldable wind-catching system for a crane according to claim 3, characterized in that: The follower pulley group (3) comprises a triangular seat body (31), a first guide wheel (32), a second guide wheel (33) and a third guide wheel (34) rotatably arranged on the triangular seat body (31); the first guide wheel (32), the second guide wheel (33) and the third guide wheel (34) are distributed in a triangular shape; one end of the track guide rope (222) passes through the first guide wheel (221), the first guide wheel (32) and the drum of the second hoist (223) in sequence and is then hinged to the top folding bracket (21); one end of the wind rope (23) passes through the second guide wheel (33), the second guide wheel (242) and the third guide wheel (34) in sequence and is then connected to the drum of the first hoist (25).

5. The foldable wind-catching system for a crane according to claim 1, characterized in that: A limiting component (4) for limiting the rotation angle of the top folding bracket (21) is also provided between the top folding bracket (21) and the arm bracket (1).

6. A foldable wind-catching system for a crane according to claim 5, characterized in that: The limiting assembly (4) comprises an ear seat (41) fixed on the arm (1), and a pulling wire rope (42) arranged between the ear seat (41) and the top folding bracket (21), one end of the pulling wire rope (42) is hinged to the ear seat (41), and the other end of the pulling wire rope (42) is hinged to an end of the top folding bracket (21) away from the arm (1).

7. The foldable wind-catching system for a crane according to claim 4, characterized in that: The first hoist (25) is provided with a first clamping assembly (5) for ensuring the winding tightness of the wind rope (23), and the second hoist (223) is provided with a second clamping assembly (6) for ensuring the winding tightness of the track guide rope (222).

8. A method for using a foldable wind-grabbing system for a crane, which is implemented by using the foldable wind-grabbing system for a crane according to any one of claims 3 to 7, characterized in that: The steps include: S1. Install the wind-catching system on the boom (1) of the crane, adjust the tightness of the wind-catching rope (23), the track guide rope (222) and the lifting wire rope (42), and connect the main lifting device on the boom (1) of the crane to the heavy object; S2, unwinding the reel by rotating the second hoist (223), driving the top folding bracket (21) to rotate and unfold; S3, unwinding the wind rope (23) through the first hoist (25), ensuring that the wind rope (23) is unwound to a certain length, and then the staff connects the hook assembly (24) to the designated position of the heavy object; S4, starting the crane, and while the weight is slowly rising, controlling the first winch (25) to reel in the windlass (23), so that the windlass (23) provides horizontal pulling force for the weight; S5. When the weight is lifted to a specified height and installed, the worker separates the hook assembly from the weight, and then controls the first winch (25) to reel in the windlass (23) to an initial state; S6, controlling the second hoist (223) to rotate the drum in the opposite direction to reel in, thereby driving the top folding bracket (21) to fold to the initial state, so as to facilitate the subsequent storage of the crane boom (1).

Images