Tower crane lifting device

Abstract

The utility model provides a lifting device for a tower crane. The lifting device comprises a mounting seat, a bracket, a hanging bracket and a steel wire rope, the mounting seat is fixed to the top of a cabin, the support is mounted on the mounting seat, and the hanging bracket is arranged at the top of the support and provided with the hoisting pulley block. A lifting pulley block is arranged at the rear end of the on-tower crane, and when the on-tower crane is vertically arranged, the lifting pulley block and the hoisting pulley block are oppositely arranged; the hoisting pulley block comprises at least one hoisting pulley which is coaxially arranged, and the lifting pulley block comprises at least one lifting pulley which is coaxially arranged; a guide pulley block is arranged on a suspension arm of the on-tower crane; when the on-tower crane is lifted, one end of the steel wire rope is fixed on the on-tower crane or the hanging bracket, and the other end of the steel wire rope penetrates through the lifting pulley block, the hoisting pulley block and the guide pulley block and then is connected to a power unit arranged below the fan tower; the power unit tightens the steel wire rope to lift the on-tower crane.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, and in particular relates to a tower crane lifting device. Background Technology

[0002] With the increasing installed capacity of wind turbines and the growing service life of wind turbines, wind turbine units need to replace components, especially blades. A wind turbine unit includes a tower fixed to the ground, a nacelle installed on top of the tower, a hub installed in the nacelle, and blades installed in the hub.

[0003] Due to the weight of the blades and the height of the towers, large truck cranes are currently used for blade replacement in most wind turbines. Large-megawatt tower turbines require crawler cranes, while offshore wind turbines necessitate the use of outrigger boats. However, the use of large lifting equipment not only incurs high lifting costs but is also subject to environmental conditions.

[0004] Therefore, a tower crane for wind turbines is needed. The tower crane itself needs to be hoisted onto the nacelle for installation and fixation before it can be used. Therefore, it is necessary to provide a tower crane lifting device to solve the above problems. Utility Model Content

[0005] This utility model provides a tower crane lifting device, which uses a mounting base, bracket, hanger and lifting pulley block in conjunction with the tower crane's wire rope, lifting pulley block, guide pulley block and power unit to lift the tower crane.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] A tower crane lifting device includes a mounting base, a support, a hanger, and a wire rope. The mounting base is fixed to the top of the nacelle, the support is mounted on the mounting base, the hanger is located on the top of the support, and a lifting pulley block is provided on the hanger. A hoisting pulley block is provided at the rear end of the tower crane. When the tower crane is vertically positioned, the hoisting pulley block and the lifting pulley block are positioned opposite each other. The lifting pulley block includes at least one hoisting pulley coaxially arranged, and the hoisting pulley block includes at least one hoisting pulley coaxially arranged. A guide pulley block is provided on the boom of the tower crane.

[0008] When lifting the tower crane, one end of the wire rope is fixed to the tower crane or the lifting frame, and the other end passes through the lifting pulley block, the hoisting pulley block and the guide pulley block and is connected to the power unit located under the wind turbine tower; the power unit tightens the wire rope to lift the tower crane.

[0009] Preferably, the hoisting pulley block is two groups arranged side by side, the lifting pulley block is two groups arranged corresponding to the hoisting pulley block, the guide pulley block is two groups, and the two groups of guide pulley blocks are arranged on the two sides of the boom of the tower crane respectively; the steel wire rope is two, and the two steel wire ropes pass through a group of lifting pulley blocks, hoisting pulley blocks and guide pulley blocks respectively.

[0010] Preferably, the hoisting pulley of the hoisting pulley block is one, and the lifting pulley of the lifting pulley block is one; one end of the steel wire rope is fixed to the tower crane, and the other end is connected to the power unit after passing through the hoisting pulley and the guide pulley block in turn; or, one end of the steel wire rope is fixed to the hanger, and the other end is connected to the power unit after passing through the lifting pulley, the hoisting pulley and the guide pulley block in turn.

[0011] Preferably, the hoisting pulley of the hoisting pulley block is two, the lifting pulley of the lifting pulley block is one, one end of the steel wire rope is fixed to the tower crane, and the other end is connected to the power unit after passing through one of the hoisting pulleys, the lifting pulley, the other hoisting pulley and the guide pulley block in turn.

[0012] Preferably, the hoisting pulley of the hoisting pulley block is two, the lifting pulley of the lifting pulley block is two, one end of the steel wire rope is fixed to the hanger, and the other end is connected to the power unit after passing through one of the lifting pulleys, one of the hoisting pulleys, the other lifting pulley, the other hoisting pulley and the guide pulley block in turn.

[0013] Preferably, the guide pulley block comprises a first guide pulley arranged at the front end of the boom of the tower crane and a second guide pulley arranged at the rear end of the boom.

[0014] Preferably, the steel wire rope passes through the second guide pulley and the first guide pulley in turn and is connected to the power unit.

[0015] Preferably, the bracket is two, and the two brackets are arranged on the two sides of the top of the mounting seat respectively; the hanger is horizontally arranged at the front end of the top of the two brackets.

[0016] Preferably, the bracket comprises a main bracket and an extension bracket; the main bracket is overall in the shape of a chevron, and the extension bracket extends outward from the top of the main bracket towards the front end of the mounting seat.

[0017] Preferably, the top of the bracket is provided with a U-shaped fixing member, and the end of the hanger is clamped into the fixing member for fixation.

[0018] Compared with the prior art, the technical scheme of the embodiment of the utility model has beneficial effects.

[0019] For example, the tower crane lifting device provided by the utility model, the tower crane lifting device, the tower crane, the steel wire rope, the lifting pulley group, the lifting pulley group, the guide pulley group and the power unit are matched with the steel wire rope of the tower crane, the lifting pulley group, the guide pulley group and the power unit through the mounting seat, the support, the hanger and the lifting pulley group, the lifting of the tower crane is realized, and the installation and fixation of the tower crane are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the structure schematic view of the tower crane lifting device of the utility model embodiment hoisting the tower crane;

[0021] Figure 2 is the partial structure schematic view of the tower crane lifting device of the utility model embodiment;

[0022] Figure 3 is the structure schematic view of the tower crane of the utility model embodiment;

[0023] Figure 4 is the steel wire rope running direction schematic view of the tower crane lifting device of the utility model embodiment when lifting the tower crane;

[0024] Figure 5 is the steel wire rope running direction schematic view of the tower crane lifting device of the utility model embodiment Figure 1 ;

[0025] Figure 6 is the steel wire rope running direction schematic view of the tower crane lifting device of the utility model embodiment Figure 2 ;

[0026] Figure 7 is the steel wire rope running direction schematic view of the tower crane lifting device of the utility model embodiment Figure 3 ;

[0027] Figure 8 is the steel wire rope running direction schematic view of the tower crane lifting device of the utility model embodiment Figure 4 .

[0028] Reference signs:

[0029] 1, cabin; 2, tower crane; 3, mounting seat; 4, support; 5, hanger; 6, steel wire rope;

[0030] 21, jib; 22, hoisting pulley block; 221, hoisting pulley; 23, guide pulley block; 231, first guide pulley; 232, second guide pulley;

[0031] 41, fixing piece; 42, main frame; 43, extension frame;

[0032] 51, hoisting pulley block; 511, hoisting pulley. DETAILED DESCRIPTION

[0033] In order to make the purpose, features and beneficial effects of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in combination with the drawings. It can be understood that the specific embodiments described below are only used to explain the utility model, and are not a limitation on the utility model. In the drawings, the same or similar reference signs can be used to refer to the same or similar elements in different embodiments, and the description of the same or similar elements in different embodiments and the description of prior art elements, features, effects, etc. can be omitted.

[0034] With reference to Figures 1 to 8 , the utility model embodiment provides a tower crane lifting device.

[0035] Specifically, the tower crane lifting device comprises a mounting seat 3, a support 4, a hanger 5 and a steel wire rope 6; the mounting seat 3 is fixed at the top of the cabin 1, the support 4 is installed on the mounting seat 3, the hanger 5 is arranged at the top of the support 4, and the hoisting pulley block 51 is arranged on the hanger 5; the rear end of the tower crane 2 is provided with the hoisting pulley block 22, the hoisting pulley block 22 is arranged opposite to the hoisting pulley block 51 when the tower crane 2 is vertically arranged; the hoisting pulley block 51 comprises at least one hoisting pulley 511 arranged coaxially, the hoisting pulley block 22 comprises at least one hoisting pulley 221 arranged coaxially; the jib 21 of the tower crane 2 is provided with the guide pulley block 23;

[0036] When the tower crane 2 is vertically lifted, one end of the steel wire rope 6 is fixed on the tower crane 2 or the hanger 5, the other end passes through the hoisting pulley block 22, the hoisting pulley block 51 and the guide pulley block 23 and is connected to the power unit arranged under the fan tower; the power unit tightens the steel wire rope 6 to lift the tower crane 2.

[0037] In some embodiments, the hoisting pulley set 51 is two sets arranged side by side, the hoisting pulley set 22 is two sets arranged correspondingly with the hoisting pulley set 51, the guide pulley set 23 is two sets, and the two sets of guide pulley sets 23 are arranged on both sides of the boom 21 of the tower crane 2 respectively; the steel wire rope 6 is two, and the two steel wire ropes 6 pass through a set of hoisting pulley sets 22, hoisting pulley sets 51 and guide pulley sets 23 respectively.

[0038] Referring to Figure 5 In some embodiments, the hoisting pulley 511 of the hoisting pulley set 51 is one, and the hoisting pulley 221 of the hoisting pulley set 22 is one; one end of the steel wire rope 6 is fixed to the tower crane 2, and the other end is connected to the power unit after passing through the hoisting pulley 511 and the guide pulley set 23 in turn; the steel wire rope 6 needs to bear the full weight of the tower crane 2 when lifting.

[0039] Referring to Figure 6 In some embodiments, the hoisting pulley 511 of the hoisting pulley set 51 is one, and the hoisting pulley 221 of the hoisting pulley set 22 is one; one end of the steel wire rope 6 is fixed to the tower crane 2, and the other end is connected to the power unit after passing through the hoisting pulley 511 and the guide pulley set 23 in turn; the steel wire rope 6 needs to bear the full weight of the tower crane 2 when lifting.

[0040] Referring to Figure 7 In some embodiments, the hoisting pulley 511 of the hoisting pulley set 51 is two, and the hoisting pulley 221 of the hoisting pulley set 22 is one; one end of the steel wire rope 6 is fixed to the tower crane 2, and the other end is connected to the power unit after passing through one of the hoisting pulleys 511, the hoisting pulley 221, the other hoisting pulley 511 and the guide pulley set 23 in turn; the steel wire rope 6 only needs to bear 1 / 3 of the weight of the tower crane 2 when lifting.

[0041] Referring to Figure 8 In some embodiments, the hoisting pulley 511 of the hoisting pulley set 51 is two, and the hoisting pulley 221 of the hoisting pulley set 22 is two; one end of the steel wire rope 6 is fixed to the tower crane 2, and the other end is connected to the power unit after passing through one of the hoisting pulleys 511, one of the hoisting pulleys 221, the other hoisting pulley 511 and the guide pulley set 23 in turn; the steel wire rope 6 only needs to bear 1 / 4 of the weight of the tower crane 2 when lifting.

[0042] In some embodiments, the guide pulley set 23 includes a first guide pulley 231 arranged at the front end of the boom 21 of the tower crane 2 and a second guide pulley 232 arranged at the rear end of the boom 21.

[0043] In some embodiments, the steel wire rope 6 passes through the second guide pulley 232 and the first guide pulley 231 in turn and is connected to the power unit.

[0044] In some embodiments, the two supports 4 are arranged on the two sides of the top of the mounting base 3, and the hanger 5 is horizontally arranged on the front end of the top of the two supports 4.

[0045] In some embodiments, the support 4 comprises a main frame 42 and an extension frame 43; the main frame 42 is in the shape of a chevron as a whole, and the extension frame 43 is fixed to the top of the main frame 42 and extends outwardly towards the front end of the mounting base 3.

[0046] In some embodiments, the top of the support 4 is provided with a U-shaped fixing member 41, and the end of the hanger 5 is clamped into the fixing member 41 for fixation.

[0047] In the specific implementation, the lifting device for the tower-mounted crane provided by the utility model has the following installation and lifting steps:

[0048] S1: fixing the mounting base 3 in the cabin 1;

[0049] S2: installing the support 4 and the hanger 5 on the mounting base 3;

[0050] S3: passing the steel wire rope 6 through the hoisting pulley set 22, the hoisting pulley set 51 and the guide pulley set 23, and then connecting the steel wire rope 6 to the power unit arranged under the tower;

[0051] S4: tightening the steel wire rope 6 by the power unit to lift the tower-mounted crane 2.

[0052] In summary, the lifting device for the tower-mounted crane provided by the utility model comprises a mounting base 3, a support 4, a hanger 5 and a steel wire rope 6; the mounting base 3 is fixed to the top of the cabin 1, the support 4 is installed on the mounting base 3, the hanger 5 is arranged on the top of the support 4, and the hoisting pulley set 51 is arranged on the hanger 5; the rear end of the tower-mounted crane 2 is provided with the hoisting pulley set 22, the hoisting pulley set 22 is arranged opposite to the hoisting pulley set 51 when the tower-mounted crane 2 is vertically arranged; the hoisting pulley set 51 comprises at least one hoisting pulley 511 arranged coaxially, and the hoisting pulley set 22 comprises at least one hoisting pulley 221 arranged coaxially; the guide pulley set 23 is arranged on the boom 21 of the tower-mounted crane 2; when the tower-mounted crane 2 is vertically lifted, one end of the steel wire rope 6 is fixed to the tower-mounted crane 2 or the hanger 5, the other end of the steel wire rope 6 passes through the hoisting pulley set 22, the hoisting pulley set 51 and the guide pulley set 23 and is then connected to the power unit arranged under the tower; the power unit tightens the steel wire rope 6 to lift the tower-mounted crane 2; through the cooperation of the mounting base 3, the support 4, the hanger 5 and the hoisting pulley set 51, the steel wire rope 6 of the tower-mounted crane 2, the hoisting pulley set 22, the guide pulley set 23 and the power unit, the tower-mounted crane 2 is lifted, and the installation and fixation of the tower-mounted crane 2 are facilitated.

[0053] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of this utility model disclosure, even when only a single embodiment is described with respect to a particular feature. The feature examples provided in this utility model disclosure are intended to be illustrative and not limiting, unless otherwise stated. In practice, one or more technical features of the dependent claims may be combined with the technical features of the independent claims as needed and where technically feasible, and may be derived from the technical features of the respective independent claims in any suitable manner rather than solely by the specific combinations listed in the claims.

Claims

1. A tower crane hoisting device, characterized in that The tower crane is characterized in that the tower crane comprises a mounting base, a support, a hanger and a steel wire rope; the mounting base is fixed on the top of the cabin; the support is installed on the mounting base; the hanger is arranged on the top of the support; a hoisting pulley block is arranged on the hanger; the rear end of the tower crane is provided with a hoisting pulley block; when the tower crane is vertically arranged, the hoisting pulley block is arranged opposite to the hoisting pulley block; the hoisting pulley block comprises at least one hoisting pulley arranged coaxially; the hoisting pulley block comprises at least one hoisting pulley arranged coaxially; a guide pulley block is arranged on the hoisting arm of the tower crane. When the tower crane is lifted, one end of the steel wire rope is fixed on the tower crane or the hanger, and the other end of the steel wire rope is connected to a power unit arranged below the fan tower after passing through the hoisting pulley block, the hoisting pulley block and the guide pulley block; the power unit tightens the steel wire rope to lift the tower crane.

2. Tower crane hoist arrangement according to claim 1, characterized in that The hoisting pulley block is arranged in two groups side by side; the hoisting pulley block is arranged in two groups corresponding to the hoisting pulley block; the guide pulley block is arranged in two groups; the two groups of guide pulley blocks are arranged on the two sides of the hoisting arm of the tower crane respectively; the steel wire rope is arranged in two groups; the two groups of steel wire ropes pass through one group of hoisting pulley blocks, hoisting pulley blocks and guide pulley blocks respectively.

3. Tower crane hoist arrangement according to claim 1, characterized in that The hoisting pulley of the hoisting pulley block is one; the hoisting pulley of the hoisting pulley block is one; one end of the steel wire rope is fixed to the tower crane, and the other end of the steel wire rope is sequentially connected to the power unit after passing through the hoisting pulley and the guide pulley block; or one end of the steel wire rope is fixed to the hanger, and the other end of the steel wire rope is sequentially connected to the power unit after passing through the hoisting pulley, the hoisting pulley and the guide pulley block.

4. The tower crane hoist arrangement of claim 1, wherein, The hoisting pulley of the hoisting pulley block is two; the hoisting pulley of the hoisting pulley block is one; one end of the steel wire rope is fixed to the tower crane, and the other end of the steel wire rope is sequentially connected to the power unit after passing through one of the hoisting pulleys, the hoisting pulley and the guide pulley block.

5. The tower crane hoist arrangement of claim 1, wherein, The hoisting pulley of the hoisting pulley block is two; the hoisting pulley of the hoisting pulley block is two; one end of the steel wire rope is fixed to the hanger, and the other end of the steel wire rope is sequentially connected to the power unit after passing through one of the hoisting pulleys, one of the hoisting pulleys, the other of the hoisting pulleys and the guide pulley block.

6. The tower crane hoist arrangement of claim 1, wherein, The guide pulley block comprises a first guide pulley arranged at the front end of the hoisting arm of the tower crane and a second guide pulley arranged at the rear end of the hoisting arm.

7. Tower crane hoist arrangement according to claim 6, characterized in that The steel wire rope sequentially passes through the second guide pulley and the first guide pulley to be connected to the power unit.

8. The tower crane hoist arrangement of claim 1, wherein, The support is two; the two supports are arranged on the two sides of the top of the mounting base; the hanger is horizontally arranged at the front end of the top of the two supports.

9. The tower crane hoist arrangement of claim 1, wherein, The support comprises a main support and an extension support; the main support is in the shape of a chevron; the extension support is fixed to the top of the main support and extends outward to the front end of the mounting base.

10. The tower crane hoist arrangement of claim 1, wherein, The top of the support is provided with a U-shaped fixing part; the end of the hanger is clamped into the fixing part to be fixed.

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