CN218206924U

CN218206924U - Cage type structure for positioning bolt hole of wind power blade test bed

Info

Publication number: CN218206924U
Application number: CN202221867632.4U
Authority: CN
Inventors: 邢晓坡; 朱英伟; 张桐; 王东
Original assignee: Zhongke Guofeng Technology Co ltd
Current assignee: Zhongke Guofeng Technology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-01-03
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a cage type structure for fixing a position wind-powered electricity generation blade test bench bolt hole, cage type structure is pouring the in-process pre-buried in test bench concrete foundation, and it is including the manhole steel pipe that is located central point, the manhole steel pipe outside has a plurality of rings groups that the structure is the same at length direction upward interval connection, and every ring group all includes a plurality of concentric, different diameters and is located the ring of coplanar, and all rings of every ring group are all connected fixedly through a plurality of radiation gusset, and the ring of minimum diameter is fixed on the manhole steel pipe, equal interval is provided with a plurality of round holes on every ring, utilizes seamless steel pipe to pass the round hole on the equal diameter ring in all ring groups to organize series connection with all rings. The utility model discloses simple structure, cost of manufacture are low, easily adjustment, can do benefit to and reduce construction cycle, have great application and spreading value for the inside locate mode of other forms of wind-powered electricity generation blade test bench.

Description

Cage type structure for positioning bolt hole of wind power blade test bed

Technical Field

The utility model belongs to the technical field of jumbo size structure mechanical testing equipment makes, concretely relates to cage type structure for fixing a position wind-powered electricity generation blade test bench bolt hole.

Background

The wind power blade is a key part for energy conversion of a wind generating set, the cost accounts for about 20% of the total cost of the set, but the failure rate is high, wherein more than 50% of failures are caused by serious defects of the design or process of the blade. The type test of new type blades or technically improved blades is an effective measure for avoiding design risks, and has become common in the industry. According to the industry statistics, 13 wind turbine blade detection laboratories are shared in China by 2021, and the laboratories need to fix detection objects on test beds during static strength testing, fatigue strength testing and related calibration work. The test bed bears all test loads, the test bed is required to have higher safety and rigidity, and the safety and the stability of the design directly influence the smooth execution of the test process and the accuracy and the reliability of test data.

Most of domestic wind power blade test benches adopt a large-volume reinforced concrete structure, the large-volume concrete pouring process is widely and skillfully mastered by construction units at present, and how to accurately position bolt holes of the test benches to meet the requirement of subsequently installing test blades is always a difficult point in the whole test bench construction link. The conventional method is that the positioning is carried out through the embedded bolt sleeve, and although the position accuracy of the embedded bolt sleeve is easily ensured in the construction process, the bearing capacity of the bolt sleeve is low, the test bed is unreasonable in stress, and the bolt sleeve cannot be replaced when damaged.

SUMMERY OF THE UTILITY MODEL

To the technical problem in the prior art, an object of the utility model is to provide a cage type structure for fixing a position wind-powered electricity generation blade test bench bolt hole.

For realizing the purpose of the utility model, the utility model provides a technical scheme as follows:

the utility model provides a cage type structure for fixing a position wind-powered electricity generation blade test bench bolt hole, cage type structure is pre-buried in test bench concrete foundation pouring the in-process, and it is including being located the manhole steel pipe at central point, the manhole steel pipe outside has a plurality of ring groups that the structure is the same at length direction interval connection, and every ring group all includes a plurality of concentric, different diameters and is located the coplanar ring, and all rings of every ring group are all connected fixedly through a plurality of radiation gusset, and the ring of minimum diameter is fixed on the manhole steel pipe, all intervals are provided with a plurality of round holes on every ring, utilize seamless steel pipe to pass the round hole on the equal diameter ring in all ring groups to organize series connection with all rings.

Wherein, a plurality of ring group interval is evenly set up.

Wherein, the round holes on each ring are evenly arranged at intervals.

Wherein, the radiation rib plates on each ring group are arranged at equal intervals.

And the pitch circle of the circular ring on each circular ring group is determined by the size requirement of the mounting pitch circle of the test bed.

The number of the circular ring groups is determined by the thickness of the test bed so as to ensure that the seamless steel pipe does not deform.

Wherein, the distance between the seamless steel pipes arranged on each circular ring is not less than 20cm.

Wherein the outer diameter of the circular hole is 5mm larger than that of the seamless steel pipe.

Compared with the prior art, the method has the following technical effects:

the utility model discloses a carry out simple combination concatenation to seamless steel pipe, ring, radiation gusset and manhole steel pipe, form a cage structure that is used for fixing a position wind-powered electricity generation blade test bench bolt hole, the steel pipe position degree and the structural rigidity of cage type structure have decided the position degree of bolt in the later stage use. This structure has realized the accurate location of test bench bolt and the substitutable nature of bolt, the utility model discloses simple structure, cost of manufacture are low, easily adjustment, can do benefit to and reduce construction cycle, have great application and spreading value for the inside locate mode of other forms of wind-powered electricity generation blade test bench.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a ring set according to an embodiment of the present application;

in the figure, a circular ring group 1, a circular hole 2, a radiation rib plate 3, a manhole steel pipe 4 and a seamless steel pipe 5.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2, the structure of the embodiment of the present application is shown.

The embodiment provides a cage type structure for fixing a position wind-powered electricity generation blade test bench bolt hole, cage type structure is pouring the in-process pre-buried in test bench concrete foundation, and it is including being located central point's manhole steel pipe 4, the manhole steel pipe 4 outside interval connection has a plurality of ring groups 1 that the structure is the same on length direction, and every ring group 1 all includes a plurality of concentric, different diameters and is located the coplanar ring, and all rings of every ring group 1 are all connected fixedly through a plurality of radiation gusset 3, and the ring of minimum diameter is fixed on manhole steel pipe 4, all intervals are provided with a plurality of round holes 2 on every ring, utilize seamless steel pipe 5 to pass round hole 2 on the equal footpath ring in all ring groups 1 to organize 1 series connection with all rings.

As shown in fig. 2, the present embodiment includes 3 circular ring groups 1 with the same structure, and each circular ring group 1 includes 4 circular rings.

It should be noted that the cage structure in the application is prefabricated before the test bed is poured, and is placed on a support at the bottom of the test bed to measure the position degree of the seamless steel pipe, the measurement result is qualified to pour, and the unqualified seamless steel pipe needs to be finely adjusted. The concrete foundation is embedded in the concrete foundation of the test bed in the pouring process and used for fixing the wind power generation blade, and the requirement for testing the strength of the wind power generation blade is met. The seamless steel pipe 5 is provided with a channel for the fixing bolt of the test bed. All the circular rings, the seamless steel pipes, the radiation rib plates and the manhole steel pipes of each circular ring group are all welded and connected.

The round hole 2 on the ring is the hole of machine tooling shaping, and seamless steel pipe 5 is established ties the equal footpath ring among a plurality of ring groups through round hole 2 on the ring.

It should be noted that the radiation rib plate 3 and the circular ring are fixed by welding.

It should be noted that the pitch circle of the circular rings in the same plane is determined by the size requirement of the mounting pitch circle of the test bed.

It should be noted that the circular hole is prefabricated on the circular ring and is used for the seamless steel pipe to pass through, and the outer diameter of the circular hole is 5mm larger than that of the seamless steel pipe, so as to achieve the purpose of micro adjustment of the position degree of the steel pipe.

It should be noted that the manhole steel pipe is used for realizing the purpose that personnel pass through the test bed and enter the interior of the wind turbine blade arranged on the test bed for inspection, and the reasonable inner diameter is 1.2 m-1.6 m.

It should be noted that the distance between the seamless steel pipes on the circular ring in the cage-shaped structure is not less than 20cm, so that the flow speed of the self-compacting concrete is not affected when the self-compacting concrete is adopted.

It should be noted that, the distance between the front and rear rings is determined according to the wall thickness of the seamless steel pipe, so as to prevent the seamless steel pipe from deforming in the concrete pouring process due to insufficient ring density, and generally, the distance is recommended to be not more than 3m.

In a preferred embodiment, the radial rib plates are uniformly arranged in the circumferential direction, and the rings with different diameters are connected into a whole by welding the radial rib plates.

The utility model relates to an important device in the large-scale test bench work progress of wind generating set wind turbine blade is exclusively used in, the device has realized the accurate location of test bench bolt and the substitutability of bolt. The device is prefabricated construction, can obviously shorten test bench construction cycle.

The cage-shaped structure is poured in the whole test bed foundation as a prefabricated whole. The cage type structure can be applied to wind power generation blade test beds and other similar large-volume concrete structures, such as bridges, dams and the like.

Finally, it should be noted that: the foregoing embodiments are provided for illustration and description of the invention and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed.

Claims

1. The utility model provides a cage type structure for fixing a position wind-powered electricity generation blade test bench bolt hole, a serial communication port, cage type structure is pouring the in-process pre-buried in test bench concrete foundation, and it is including manhole steel pipe (4) that are located central point, manhole steel pipe (4) outside interval connection has a plurality of rings group (1) that the structure is the same on length direction, and every ring group (1) all includes a plurality of concentric, different diameters and is located the coplanar ring, and all rings of every ring group (1) are all connected fixedly through a plurality of radiation gusset (3), and the ring of minimum diameter is fixed on manhole steel pipe (4), all intervals are provided with a plurality of round holes (2) on every ring, utilize seamless steel pipe (5) to pass round hole (2) on the equal footpath ring in all ring groups (1) to organize (1) series connection with all rings.

2. The cage structure for positioning the bolt holes of the wind turbine blade test bed according to claim 1, wherein a plurality of the ring groups (1) are uniformly arranged at intervals.

3. The cage type structure for positioning the bolt holes of the wind power blade test bed according to claim 1, wherein the circular holes (2) on each circular ring are uniformly arranged at intervals.

4. The cage type structure for positioning the bolt holes of the wind power blade test bed according to claim 1, wherein the radiation rib plates (3) on each ring group (1) are uniformly arranged at intervals.

5. The cage structure for positioning wind turbine blade test bed bolt holes of claim 1, characterized in that the pitch circle of the rings on each ring group (1) is determined by the test bed mounting pitch circle size requirement.

6. The cage type structure for positioning the bolt hole of the wind power blade test bed according to claim 1, wherein the number of the ring groups (1) is determined by the thickness of the test bed so as to ensure that the seamless steel pipe (5) does not deform.

7. The cage type structure for positioning the bolt hole of the wind power blade test bed according to the claim 1 is characterized in that the distance between the seamless steel pipes (5) arranged on each ring is not less than 20cm.

8. The cage structure for positioning wind turbine blade test bed bolt holes according to claim 1, characterized in that the outer diameter of the round hole (2) is 5mm larger than the outer diameter of the seamless steel tube (5).