CN-122009987-A - Ultrahigh wind power mixed tower hoisting attachment connection fixing device and construction method thereof

Abstract

The invention relates to the technical field of wind power mixed tower construction, in particular to an attaching and connecting fixing device for an ultrahigh wind power mixed tower crane and a construction method thereof, wherein the device comprises an attaching and connecting frame, a connecting and fixing mechanism and a steel wire rope fastening mechanism, the connecting and fixing mechanism comprises a hoop ring which is sleeved and arranged on the prefabricated concrete tower, a connecting support is arranged on the hoop ring, the attaching and connecting frame is respectively connected with the tower crane upright post and the connecting support, and the steel wire rope fastening mechanism is fastened and arranged on the outer side of the hoop ring. The tower crane disclosed by the invention is stable in operation, the attached connection fixing device is free from deformation and loosening, the tower barrel structure is free from damage, and the hoisting operation of the engine room and the hub of the 200m ultra-high wind power hybrid tower is successfully completed, so that compared with the ultra-large crawler crane, the mechanical cost is reduced by more than 60%, the land coordination difficulty is greatly reduced, and the construction efficiency is improved by 30%.

Inventors

• WANG DAIFA
• Wang Haohang
• WANG YUNA
• ZHANG JINPENG
• XU LEI
• JING CHAOYANG
• CHEN CHEN

Assignees

• 中国二十二冶集团有限公司

Dates

Publication Date

20260512

Application Date

20260323

Claims (8)

1. 1. The attachment and connection fixing device for the ultra-high wind power mixed tower crane is characterized by comprising an attachment and connection frame (9), a connection and fixing mechanism (10) and a steel wire rope fastening mechanism (11), wherein the connection and fixing mechanism (10) comprises a hoop ring (101) sleeved on a prefabricated concrete tower drum (2), a connection support (106) is arranged on the hoop ring (101), the attachment and connection frame (9) is respectively connected with a tower crane upright post (7) and the connection support (106), and the steel wire rope fastening mechanism (11) is fastened and installed on the outer side of the hoop ring (101).
2. 2. The device for attaching and fixing the ultrahigh wind power mixing tower crane according to claim 1, wherein the hoop (101) comprises a plurality of links, the ends of the links are fixedly connected with flange connecting plates (103), and the flange connecting plates (103) of two adjacent links are connected through connecting bolts (104).
3. 3. The attachment and connection fixing device for the ultra-high wind power mixing tower crane according to claim 2, wherein the outer side of the end part of the link is fixedly connected with a hoop flange reinforcing plate (102), and the flange connecting plate (103) is fixedly connected with the hoop flange reinforcing plate (102).
4. 4. The attachment and connection fixing device for the ultra-high wind power mixing tower crane according to claim 1, wherein the outer wall of the hoop (101) is fixedly connected with a support reinforcing plate (105), and the connection support (106) is fixedly connected with the support reinforcing plate (105).
5. 5. The attachment and connection fixing device for the ultra-high wind power mixing tower crane according to claim 1 is characterized in that a soft cushion layer (108) is arranged between the hoop (101) and the prefabricated concrete tower (2).
6. 6. The device for attaching and fixing the ultra-high wind power mixing tower crane according to claim 5, wherein the soft cushion layer (108) is a rubber cushion or a polyurethane cushion.
7. 7. The attachment and connection fixing device for the ultra-high wind power mixing tower crane according to claim 3, wherein vertical face reinforcing ribs (107) are fixedly connected between the hoop flange reinforcing plates (102) and the flange connecting plates (103).
8. 8. A construction method of the ultra-high wind power mixing tower crane attaching and connecting fixing device according to any one of claims 1 to 7, comprising the following steps: S1, manufacturing a connecting and fixing mechanism (10), namely manufacturing a plurality of links, welding hoop flange reinforcing plates (102) at two ends of each link, welding support reinforcing plates (105) on the outer walls of the links, welding flange connecting plates (103) and connecting supports (106), and preparing connecting bolts (104), pin shafts, soft cushion layers (108) and a steel wire rope fastening mechanism (11) in a matched mode; S2, assembling a connection fixing mechanism (10), namely setting attachment points at corresponding elevations of prefabricated concrete tower drums (2) according to a tower crane construction scheme, installing hoop rings (101) on the corresponding prefabricated concrete tower drums (2) on the ground, adjusting the direction of a connection support (106) to enable the connection support (106) to be matched with the lifting direction of the tower crane, splicing the connection support and the tower crane into a whole through a connection bolt (104), fully paving a soft cushion layer (108) between the hoop rings (101) and tower tube sheets, splicing a plurality of links into a whole structure through the connection bolt (104), and installing a steel wire rope fastening mechanism (11); s3, installing the prefabricated concrete tower barrel (2), namely sequentially hoisting the O-shaped ring tower barrel pipe sections which are assembled in a preassembled mode by adopting a special hoisting tool according to the requirements of construction drawings and related specifications and manuals, hoisting to the designed height, and hoisting a steel conversion section (4) finally to ensure coaxiality; s4, stretching the in-vivo prestress steel strand, namely penetrating a low-relaxation prestress steel strand into the prefabricated concrete tower (2), stretching according to the design stress, grouting a pore canal by adopting grouting materials after stretching, and curing to the design strength; s5, constructing a tower crane foundation (6), assembling a tower crane upright post (7), a sleeve frame assembly, a slewing mechanism and a tower crane balance arm (8), starting self-elevating jacking, performing perpendicularity monitoring in the jacking process, ensuring that perpendicularity deviation of the tower crane upright post (7) is within a standard allowable range, connecting an attaching connecting frame (9) with a connecting support (106) at corresponding elevation positions through pin shafts, performing anti-loosening treatment, and completing attaching reinforcement step by step; S6, checking and handing over, namely carrying out no-load, rated load and overload tests on the tower crane and the device, wherein test data all meet design requirements; s7, attaching and detaching, namely detaching the attachment in time in the descending process by utilizing the tower crane.

Description

Ultrahigh wind power mixed tower hoisting attachment connection fixing device and construction method thereof Technical Field The invention relates to the technical field of wind power mixed tower construction, in particular to an attachment and connection fixing device for ultrahigh wind power mixed tower hoisting and a construction method thereof. Background In recent years, the wind power industry in China realizes high-speed development, the installed capacity of wind power is continuously increased, and the fan type is gradually upgraded to a large-sized and high-hub height direction. The concrete-steel mixed tower (hereinafter referred to as mixed tower) fan has the advantages of low engineering cost and strong structural stability under the application scene of high wind speed area and high hub height, and gradually replaces the traditional all-steel tower fan, so that the concrete-steel mixed tower fan becomes one of the main stream models of the onshore wind power project. However, as the height of the fan tower is increased to 180m or more, the operation height and hoisting load of the traditional large crawler crane and hydraulic crane cannot meet the hoisting operation demands of a heavier engine room and a hub, and if the ultra-large crawler crane or hydraulic crane is adopted to finish hoisting, on one hand, extremely high mechanical leasing and using cost can be generated, and on the other hand, the engineering construction cost is greatly increased, and on the other hand, the operation of the ultra-large crane needs to occupy a large amount of land resources, so that the difficulty of project land coordination is remarkably improved, and the core technical pain point of the ultra-high wind power mixing tower construction of 200m or more is formed. At present, the construction mode of self-elevating type and adhesive connection of a tower crane is mature in the civil ultra-high building field, but the adhesive connection technology cannot be directly applied to wind power mixing tower construction, wherein the wind power mixing tower is of a circular thin-wall structure formed by splicing precast concrete C-shaped pipe pieces, the pipe pieces are connected into an O-shaped ring through pairing grouting, the structural strength and the damage resistance are far lower than those of reinforced concrete structures of civil buildings, if an embedded part is arranged on a wind power mixing tower barrel for adhesive connection, the on-site welding operation is easy to cause damage to the concrete barrel wall and grouting vertical joints, and the overall structural stability of the tower barrel is damaged, so that serious construction safety hazards exist. In conclusion, the prior art lacks a tower crane attaching and connecting fixing device which is adaptive to the structural characteristics of the ultra-high wind power mixing tower, low in cost and easy to construct and a matched construction method, so that the high-efficiency and safe hoisting of the ultra-high wind power mixing tower with the thickness of more than 200m can not be realized, and the development process of the large-scale and high hub height of a wind power generator is restricted. Disclosure of Invention In order to solve the problems in the prior art, the invention provides an attaching and connecting fixing device for an ultrahigh wind power mixing tower crane and a construction method thereof. According to the technical scheme, the attaching and connecting fixing device comprises an attaching and connecting frame, a connecting and fixing mechanism and a steel wire rope fastening mechanism, wherein the connecting and fixing mechanism comprises a hoop ring sleeved on a prefabricated concrete tower, a connecting support is arranged on the hoop ring, the attaching and connecting frame is respectively connected with a tower crane upright post and the connecting support, and the steel wire rope fastening mechanism is fastened and installed on the outer side of the hoop ring. Preferably, the hoop ring comprises a plurality of links, the end parts of the links are fixedly connected with flange connecting plates, and the flange connecting plates of two adjacent links are connected through connecting bolts. Preferably, the outer side of the end part of the link is fixedly connected with a hoop flange reinforcing plate, and the flange connecting plate is fixedly connected with the hoop flange reinforcing plate. Preferably, the outer wall of the hoop ring is fixedly connected with a support reinforcing plate, and the connecting support is fixedly connected with the support reinforcing plate. Preferably, a soft cushion layer is arranged between the hoop ring and the prefabricated concrete tower. Preferably, the cushion layer is a rubber pad or a polyurethane pad. Preferably, a vertical face reinforcing rib is fixedly connected between the hoop flange reinforcing plate and the flange connecting plate. In a second aspect, the invention prov