阅读说明：本技术 一种机舱罩吊物孔盖固定结构 (Cabin cover hangs thing handhole door fixed knot and constructs ) 是由 褚景春 袁凌 刘梅 杨潺 刘广 赵亚男 姜宏业 冀亚涛 于 2019-11-07 设计创作，主要内容包括：本发明公开了一种机舱罩吊物孔盖固定结构,包括：套筒,包括一体成型的固定法兰和圆柱筒,固定设置在吊物孔盖的内表面边缘上,圆柱筒靠近机舱罩的外部设置,圆柱筒上纵向设置有凹槽；L型螺栓,包括一体成型的螺柱和卡头,卡头用于紧固机舱罩,L型螺栓套设在套筒的圆柱筒内,L型螺栓的螺柱可在套筒的圆柱筒内上下、旋转移动,带动卡头沿圆柱筒的凹槽上下移动,以实现靠近机舱罩的外部并卡紧机舱罩。本发明结构简单紧凑、稳定可靠,且成本低廉；安全可靠,无需额外的高空安装作业,无需操作人员探出机舱罩安装、调整,降低操作人员风险；使用方便,按压旋转即可方便、快捷的打开或关闭风电机组机舱吊物孔盖。(The invention discloses a fixing structure of an object hanging hole cover of an engine room cover, which comprises: the sleeve comprises a fixed flange and a cylindrical barrel which are integrally formed, the fixed flange and the cylindrical barrel are fixedly arranged on the edge of the inner surface of the hanging hole cover, the cylindrical barrel is arranged close to the outer part of the cabin cover, and a groove is longitudinally formed in the cylindrical barrel; l type bolt, including integrated into one piece's double-screw bolt and dop, the dop is used for fastening cabin cover, and L type bolt cover is established in telescopic cylinder, and the double-screw bolt of L type bolt can be in telescopic cylinder upper and lower, rotary motion, drives the dop and reciprocates along the recess of cylinder to the outside and the chucking cabin cover that are close to cabin cover of realization. The invention has simple and compact structure, stability, reliability and low cost; the safety and reliability are realized, extra high-altitude installation operation is not needed, an operator does not need to extend out of the cabin cover for installation and adjustment, and the risk of the operator is reduced; the use is convenient, and the wind turbine generator cabin hanging hole cover can be conveniently and quickly opened or closed by pressing and rotating.)

1. A nacelle cover hoisted hole cover fixing structure is characterized by comprising: the sleeve (2) comprises a fixed flange (21) and a cylindrical barrel (22) which are integrally formed, the fixed flange and the cylindrical barrel are fixedly arranged on the edge of the inner surface of the object hanging hole cover, the cylindrical barrel (22) is arranged close to the outer part of the cabin cover (7), and a groove (23) is longitudinally formed in the cylindrical barrel (22);

l type bolt (1), including integrated into one piece's double-screw bolt and dop, the dop is used for fastening cabin cover, and L type bolt (1) cover is established in cylinder section of thick bamboo (22) of sleeve (2), and the double-screw bolt of L type bolt (1) can be about, rotary motion in cylinder section of thick bamboo (22) of sleeve (2), drives the dop and reciprocates along recess (23) of cylinder section of thick bamboo (22) to the outside and the chucking cabin cover that realize being close to cabin cover (7).

2. The nacelle cover hanger hole cover fixing device according to claim 1, wherein the fixing flange (21) of the sleeve (2) is provided with a plurality of through holes through which the sleeve (2) is fixed to the inner surface edge of the hanger hole cover by a plurality of fixing members.

3. The cabin cover lifting hole cover fixing device is characterized in that a spring (3) and a nut (4) are sleeved on a stud of an L-shaped bolt (1), the nut (4) is in threaded connection with the stud of the L-shaped bolt, one end of the spring (3) is connected with the nut (4), the other end of the spring (3) is connected with a fixing flange (21) of a cylindrical barrel (2), the tightness of the spring (3) is adjusted by rotating the nut (4), so that the L-shaped bolt (1) is driven to rotate and move relative to the sleeve (2), and the L-shaped bolt (1) is clamped with a cabin cover (7).

4. The cabin cover lifting hole cover fixing device is characterized in that a handle (5) is arranged at the top end of a stud of the L-shaped bolt (1), and the handle (5) is pressed and rotated to adjust the tightness of the spring (3) and control the L-shaped bolt (1) to move up and down and rotate.

5. The nacelle cover hanging hole cover fixing device according to claim 1, characterized in that the outer surface of the hanging hole cover is provided with a bending plate (6), the bending plate (6) is fixed with the hanging hole cover for clamping the nacelle cover (7), and the bending plate (6) is arranged at the position of the hanging hole cover close to the machine head.

6. The nacelle cover hanger hole cover fixing device according to claim 1, wherein a lateral width of the chuck in the L-bolt (1) is smaller than a lateral width of the groove (23).

Technical Field

The invention relates to the field of accessories of wind driven generators, in particular to a fixing structure for a hanging hole cover of an engine room cover.

Background

Wind generators typically require a tower mounted at a height of more than 60m from the ground, with the generator set mounted on top of the tower. When the unit is maintained and overhauled, an operator needs to hoist required materials into a cabin. Therefore, a nacelle hanging hole is generally designed at the bottom of the nacelle cover. The object lifting hole is provided with an object lifting hole cover which is in a closed state in daily life and is opened when materials are lifted. The conventional hoisting hole cover plate is separated, i.e. can be completely removed from the hoisting hole. When the device is installed, the object hanging hole cover is placed on the object hanging hole, the C-shaped buckle is inserted into one side of the object hanging hole cover, and the other side of the object hanging hole cover is fixed by the bolt after the object hanging hole cover is properly placed.

Along with the operation of the wind turbine generator, the lifting hole cover is damaged in different degrees, and some parts of the lifting hole cover are lost. This requires reconfiguration of the manhole cover. The bottom of the cabin cover has a certain radian, radians made by different manufacturers have a certain difference, and the positions of holes are also different when the object hanging holes are opened, so that the radians of the object hanging holes of the cabin covers are different. Moreover, cabin covers of glass fiber reinforced plastic material may deform to different degrees due to different hang-up times. These factors all make the curvature of the reconfigured sling opening cover impractical for all nacelle covers. The radian of the lifting hole cover cannot be completely matched with the type, a certain gap exists between the cabin cover and the lifting hole cover, and the original bolt on the cabin cover cannot fix the lifting hole cover. Even if some of the pins are damaged or lost. Meanwhile, most cabin hanging holes are very small in space from the rack, the bolts are installed and adjusted again, or other fixing mechanisms are additionally arranged on the cabin cover, operation is not easy, and great potential safety hazards can be brought to operators. These are all issues that must be addressed to reconfigure the drop hole cover.

Disclosure of Invention

The invention aims to provide a fixing device for a nacelle cover hanging hole cover, which has the advantages of simple structure, convenience in use and lower cost.

In order to achieve the purpose, the specific technical scheme of the fixing structure of the nacelle cover hanging hole cover is as follows:

a nacelle cover flap cover fixing structure comprising: the sleeve comprises a fixed flange and a cylindrical barrel which are integrally formed, the fixed flange and the cylindrical barrel are fixedly arranged on the edge of the inner surface of the hanging hole cover, the cylindrical barrel is arranged close to the outer part of the cabin cover, and a groove is longitudinally formed in the cylindrical barrel; l type bolt, including integrated into one piece's double-screw bolt and dop, the dop is used for fastening cabin cover, and L type bolt cover is established in telescopic cylinder, and the double-screw bolt of L type bolt can be in telescopic cylinder upper and lower, rotary motion, drives the dop and reciprocates along the recess of cylinder to the outside and the chucking cabin cover that are close to cabin cover of realization.

Furthermore, a plurality of through holes are arranged on the fixing flange of the sleeve, and a plurality of fixing pieces penetrate through the through holes to fix the sleeve on the edge of the inner surface of the object hanging hole cover.

Furthermore, a spring and a nut are sleeved on a stud of the L-shaped bolt, the nut is in threaded connection with the stud of the L-shaped bolt, one end of the spring is connected with the nut, the other end of the spring is connected with a fixing flange of the cylindrical barrel, and the tightness of the spring is adjusted by rotating the nut so as to drive the L-shaped bolt to rotate and move relative to the sleeve, so that the L-shaped bolt is clamped with the cabin cover. Furthermore, a handle is arranged at the top end of a stud of the L-shaped bolt, and the handle is pressed and rotated to adjust the tightness of the spring and control the L-shaped bolt to move up and down and rotate.

Furthermore, the outer surface of the hoisting hole cover is provided with a bending plate, the bending plate and the hoisting hole cover are fixed together and used for clamping the cabin cover, and the bending plate is arranged at the position, close to the machine head, of the hoisting hole cover.

Further, the transverse width of the clamping head in the L-shaped bolt is smaller than that of the groove.

The nacelle cover hanging hole cover fixing structure has the advantages that:

1) the structure is simple, compact, stable and reliable, and the cost is low;

2) the safety and reliability are realized, extra high-altitude installation operation is not needed, an operator does not need to extend out of the cabin cover for installation and adjustment, and the risk of the operator is reduced;

3) the use is convenient, and the wind turbine generator cabin hanging hole cover can be conveniently and quickly opened or closed by pressing and rotating.

Drawings

FIG. 1 is a schematic structural view of a nacelle cover hanging hole cover fixing device of the present invention;

fig. 2 is a schematic structural view of the sleeve of the present invention.

In the figure: 1. an L-shaped bolt; 2. a sleeve; 21. a fixed flange; 22. a cylindrical barrel; 3. a spring; 4. a nut; 5. a handle; 6. bending the plate; 7. a nacelle cover; 8. and (4) hanging hole covers.

Detailed Description

For better understanding of the objects, structure and functions of the present invention, a nacelle cover flap fixing structure according to the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 2, which illustrate a nacelle cover hanging hole cover fixing structure of the present invention, the structure includes an L-shaped bolt 1 and a sleeve 2, wherein the sleeve 2 includes an integrally formed fixing flange 21 and a cylindrical barrel 22, the fixing flange and the cylindrical barrel are fixedly disposed on an inner surface edge of a hanging hole cover 8, the cylindrical barrel 22 is disposed near an exterior of a nacelle cover, and a groove 23 is longitudinally disposed on the cylindrical barrel 22; the L-shaped bolt 1 comprises a stud and a chuck which are integrally formed, the chuck is used for fastening the cabin cover, the L-shaped bolt 1 is sleeved in the cylindrical barrel 22 of the sleeve 2, the stud of the L-shaped bolt 1 can move up and down or rotate in the cylindrical barrel 22 of the sleeve 2, and the chuck is driven to move up and down along the groove 23 of the cylindrical barrel 22 so as to be close to the outside of the cabin cover and clamp the cabin cover.

Further, a plurality of through holes (preferably, screw holes) are formed in the fixing flange 21 of the socket 2, and a plurality of fixing members (bolts matching the screw holes) are inserted through the through holes to fix the socket 2 to the edge of the inner surface of the manhole cover.

Further, the cover is equipped with spring 3 and nut 4 on L type bolt 1's the double-screw bolt, and nut 4 is threaded connection with L type bolt 1's double-screw bolt, and spring 3's one end links to each other with nut 4, and the other end links to each other with the mounting flange 21 of a cylinder section of thick bamboo 2, and the other end links to each other with nut 4, adjusts control spring 3's elasticity degree through swivel nut 4 to drive L type bolt 1 for sleeve 2 swivelling movement, thereby realize L type bolt 1 chucking cabin cover.

In addition, the invention can properly adjust the nut 4 according to the tightness degree of the spring 3, so that the L-shaped bolt 1 can further clamp the cabin cover. When the hanging hole cover is opened, the rotating handle 5 is pressed, so that the L-shaped bolt 1 moves out of the groove 23 and faces the inner side of the hanging hole cover, and the cabin cover can be opened.

Further, a handle 5 is arranged at the top end (the end not connected with the chuck) of the stud of the L-shaped bolt 1, so that an operator can control the tightness of the spring 3 and control the L-shaped bolt 1 to move up and down and rotate relative to the sleeve 2 by pressing and rotating the handle 5. And, the lateral width of the chuck in the L-bolt 1 is smaller than the lateral width of the groove 22.

Further, the outer surface of the lifting hole cover is provided with a bending plate 6, the bending plate 6 and the lifting hole cover are fixed together for clamping the cabin cover, and the bending plate 6 is arranged on the position, close to the machine head, of the lifting hole cover.

In the present invention, it is preferable that a plurality of nacelle cover flap fixing devices are provided at positions easy to handle according to the size of the flap and the arc trial conditions.

The working process of the nacelle cover hanging hole cover fixing structure of the invention is described below with reference to the accompanying drawings:

before the hanging hole cover is installed, the handle 5 and the compression spring 3 are pressed to enable the L-shaped bolt 1 to descend along the groove 23 in the sleeve 2, and after the length of the sleeve 2 is exceeded, the handle 5 is rotated to enable the L-shaped bolt 1 to face the inner side of the hanging hole cover.

When the lifting hole cover is installed, the bending plate 6 of the lifting hole cover is directed to a position close to the machine head so as to clamp the cabin cover 7. After the hoisting hole cover is placed in the hoisting hole, the rotating handle 5 is pressed to enable the L-shaped bolt 1 to rotate to the opening of the groove 23 of the sleeve 2, the handle 5 is loosened, the spring 3 bounces, and the L-shaped bolt 1 moves upwards to the sealing end of the groove 23 to clamp the cabin cover 7. Then, the nut 4 is appropriately adjusted according to the degree of tightness of the spring 3, and the L-bolt 1 is further tightened against the nacelle cover 7.

When the hanging hole cover is opened, the rotating handle 5 is pressed to move the L-shaped bolt 1 out of the groove 23 and towards the inner side of the hanging hole cover, so that the hanging hole cover can be opened.

The fixing structure of the nacelle cover hanging hole cover is simple and compact in structure, stable and reliable, and low in cost; the safety and reliability are realized, extra high-altitude installation operation is not needed, an operator does not need to extend out of the cabin cover for installation and adjustment, and the risk of the operator is reduced; the use is convenient, and the wind turbine generator cabin hanging hole cover can be conveniently and quickly opened or closed by pressing and rotating.

The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.