CN215980362U

CN215980362U - Single-side tightening bolt for engine room cover

Info

Publication number: CN215980362U
Application number: CN202122621329.8U
Authority: CN
Inventors: 江小军; 肖航; 陶艳明
Original assignee: CSIC Haizhuang Windpower Co Ltd
Current assignee: CSIC Haizhuang Windpower Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-08
Anticipated expiration: 2031-10-29

Abstract

The utility model provides a unilateral tightening bolt for an engine room cover, which comprises a bolt body and a sealing plug; the bolt body comprises a waist-shaped plate, a screw and a rod head; the waist-shaped plate is used for penetrating through the cabin cover through a waist-shaped hole formed in the shell of the cabin cover, one end of the screw is fixedly connected with one side surface of the waist-shaped plate, the other end of the screw is provided with a rod head, the rod head is in a regular polygon shape, the outer wall of the rod head is provided with a rotation in-place mark, and the rotation in-place mark is parallel to or perpendicular to the vertical line of the axial lead of the rod head and the long axis of the waist-shaped hole; the sealing plug is in threaded connection with the screw rod. The outer wall of the cabin cover is provided with a waist-shaped hole, a waist-shaped plate penetrates into the cabin cover through the waist-shaped hole and rotates by 80-100 degrees, so that the long axis of the waist-shaped plate is perpendicular or approximately perpendicular to the long axis of the waist-shaped hole, then the mounting hole of the piece to be mounted and the locking nut are sleeved on the periphery of the screw rod, the head of the rod is clamped by a wrench to limit the rotation freedom degree of the bolt body, and finally the nut is screwed to finish the unilateral mounting operation of the piece to be mounted on the outer wall of the cabin cover.

Description

Single-side tightening bolt for engine room cover

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a single-side tightening bolt for a cabin cover.

Background

With the continuous change of the wind generating set technology, new technology which is not used in the design of a plurality of machine types can be additionally installed at the later stage according to the requirement, and if the installation interface is required to be additionally arranged on the side wall or the bottom of the composite material cabin cover, the operation is inconvenient in high altitude. Meanwhile, some technical improvement projects also need to connect bolts on the cabin cover, and the bolts are inconvenient for operators to tighten for the operation only on one side. That is, when an operator can only operate on one side of the connecting surface and needs to connect the bolt pair on the connecting surface, the bolt cannot be fixed on the other side of the connecting surface.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the single-side screwing bolt for the engine room cover solves the technical problem that when an operator only can operate on one side of the connecting surface and needs to connect a bolt pair on the connecting surface, the bolt cannot be fixed on the other side of the connecting surface.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the utility model provides a unilateral tightening bolt for an engine room cover, which comprises a bolt body and a sealing plug; the bolt body comprises a waist-shaped plate, a screw rod and a rod head; the waist-shaped plate is used for penetrating through the cabin cover through a waist-shaped hole formed in the shell of the cabin cover, one end of the screw is fixedly connected with one side surface of the waist-shaped plate, the other end of the screw is provided with the rod head, the rod head is in a regular polygon shape so as to be convenient for spanner operation, the outer wall of the rod head is provided with a rotation in-place mark, and the rotation in-place mark and a perpendicular line of the axial lead of the rod head are parallel to or perpendicular to the long axis of the waist-shaped hole; the sealing plug is in threaded connection with the screw, and the outer contour of the sealing plug is matched with the inner contour of the waist-shaped hole so as to be embedded into the waist-shaped hole.

Optionally, the contour of the side surface of the sealing plug facing away from the kidney plate is greater than the contour of the side surface of the sealing plug facing towards the kidney plate.

Optionally, the thickness of the sealing plug is smaller than the wall thickness of the nacelle cover.

Optionally, the sealing plug is made of glass fiber reinforced nylon plastic.

Optionally, the screw rod is provided with an annular groove towards the periphery of one end of the waist-shaped plate.

Optionally, the sealing plug is formed by left seal and the concatenation of right seal, left semicircle screw has been seted up towards right seal one side to left seal, right semicircle screw has been seted up towards left seal one side to right seal, left semicircle screw and right semicircle screw amalgamation are in order to form complete screw hole.

Optionally, the rotation in-place mark comprises a through hole, and the through hole is formed in the outer peripheral wall of the club head.

According to the technical scheme, the utility model has the beneficial effects that:

the utility model provides a unilateral tightening bolt for an engine room cover, which comprises a bolt body and a sealing plug; the bolt body comprises a waist-shaped plate, a screw rod and a rod head; the waist-shaped plate is used for penetrating through the cabin cover through a waist-shaped hole formed in the shell of the cabin cover, one end of the screw is fixedly connected with one side surface of the waist-shaped plate, the other end of the screw is provided with the rod head, the rod head is in a regular polygon shape so as to be convenient for spanner operation, the outer wall of the rod head is provided with a rotation in-place mark, and the rotation in-place mark and a perpendicular line of the axial lead of the rod head are parallel to or perpendicular to the long axis of the waist-shaped hole; the sealing plug is in threaded connection with the screw, and the outer contour of the sealing plug is matched with the inner contour of the waist-shaped hole so as to be embedded into the waist-shaped hole. The waist-shaped plate of the unilaterally screwed bolt penetrates into the cabin cover through the waist-shaped hole and rotates by 80-100 degrees by forming the waist-shaped hole in the outer wall of the cabin cover, so that the long axis of the waist-shaped plate is perpendicular or approximately perpendicular to the long axis of the waist-shaped hole, then the mounting hole of the piece to be mounted and the locking nut are sleeved on the periphery of the screw rod, the wrench is used for clamping the rod head to limit the rotation freedom degree of the bolt body, and finally the nut is screwed to finish the unilaterally mounting operation of the piece to be mounted on the outer wall of the cabin cover. The problem of when operating personnel can only be connected face one side and operate, need connect on the face bolt pair simultaneously, can't be connecting the face opposite side fixing bolt is solved.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of an outer wall of a nacelle cover;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic structural view of the bolt body;

FIG. 5 is a schematic view of the structure of the interior of the nacelle cover;

FIG. 6 is a partial exploded view of the nacelle cover;

FIG. 7 is a comparison view of the use state of the single-side tightening bolt for the nacelle cover;

reference numerals:

1-cabin cover, 2-to-be-assembled part, 3-bolt body, 4-sealing plug and 5-nut;

11-waist-shaped hole, 21-ear plate, 31-waist-shaped plate, 32-screw, 33-rod head and 34-through hole.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1-7, the utility model provides a single-side tightening bolt for a nacelle cover 1, which comprises a bolt body 3 and a sealing plug 4. The bolt body 3 comprises a waist-shaped plate 31, a screw 32 and a rod head 33, which can be seen in fig. 4. The waist-shaped plate 31 is used for penetrating through the cabin cover 1 through a waist-shaped hole 11 formed in the shell of the cabin cover 1, one end of the screw rod 32 is fixedly connected with the surface of one side of the waist-shaped plate 31, the other end of the screw rod 32 is provided with the rod head 33, the rod head 33 is in a regular polygon shape so as to be convenient for wrench operation, the outer wall of the rod head 33 is provided with a rotation in-place mark, and the rotation in-place mark and a perpendicular line of the axial lead of the rod head 33 are parallel or perpendicular to the long axis of the waist-shaped hole 11; the sealing plug 4 is in threaded connection with the screw 32, and the outer contour of the sealing plug 4 is adapted to the inner contour of the kidney-shaped hole 11 so as to be embedded into the kidney-shaped hole 11. One embodiment, the pole head 33 is regular hexagon bodily form, rotatory sign that targets in place includes through-hole 34, through-hole 34 set up in the pole head 33 periphery wall specifically runs through the relative both sides of regular hexagon, and whether mutually perpendicular of waist type board 31 and waist type hole 11 can be judged to through-hole 34 on the one hand, and on the other hand can be in order to avoid the bolt high altitude to drop when dismantling, and available string penetrates through-hole 34 so that the hook is convenient.

The single-side bolt tightening method for the engine room cover 1 can be specifically used according to the following steps:

s1, marking a line on the shell of the cabin cover 1 according to the position of the mounting hole, and forming a waist-shaped hole 11;

s2, sleeving the sealing plug 4 on the periphery of the screw rod 32, enabling the sealing plug 4 to be attached to the surface of the waist-shaped plate 31 with the bolt screwed on one side, holding the screw rod 32 to enable the waist-shaped plate 31 to penetrate into the cabin cover 1 from the outside or penetrate out of the cabin cover 1 from the inside through the waist-shaped hole 11, simultaneously plugging the sealing plug 4 into the waist-shaped hole 11, screwing the screw rod 32 to rotate for 80-100 degrees, and enabling the long axis of the waist-shaped plate 31 to be perpendicular or approximately perpendicular to the long axis of the waist-shaped hole 11;

s3, the mounting hole of the to-be-mounted member 2 and the lock nut 5 are sequentially sleeved on the periphery of the screw 32, the wrench is used to clamp the rod head 33 to limit the rotational freedom of the bolt body 3, and finally the nut 5 is tightened to complete the single-side mounting operation of the to-be-mounted member 2 on the inner wall or the outer wall of the cabin cover 1. Specifically, the periphery of the to-be-mounted part 2 is provided with an ear plate 21, and the ear plate 21 is provided with the mounting hole. Preferably, before the part 2 to be mounted is mounted, glue is applied to the joint between the sealing plug 4 and the screw 32 and between the sealing plug 4 and the kidney-shaped hole 11 for sealing.

In step S2, since the sealing plug 4 is screwed to the screw rod 32 and is attached to the surface of the kidney-shaped plate 31, and the sealing plug 4 is also in the shape of a kidney and is embedded in the kidney-shaped hole 11, the screw rod 32 can only rotate in one direction (i.e., rotate left or right, and is related to the surface thread direction), after being screwed 80 to 100 degrees, the long axis of the sealing plug 4 is perpendicular or approximately perpendicular to the long axis of the kidney-shaped plate 31, and at the same time, the sealing plug 4 forms a certain gap with the kidney-shaped plate 31. In order not to affect the tight fit between the to-be-installed part 2 and the surface of the nacelle cover 1, the thickness of the sealing plug 4 is preferably smaller than the wall thickness of the nacelle cover 1, and the material of the sealing plug 4 may be glass fiber reinforced nylon plastic.

When the unit need install some later stage detachable equipment when the design, generally adopt welded nut fixed at present, but welded nut uses rivet fixation, and the reliability is not high, and the later stage also can use this article to put forward the vice substitution of bolt in the mounted position to higher requirement.

As a further improvement to the above scheme, the sealing plug 4 is made of a material with a certain elastic deformation, and the contour of the surface of the sealing plug 4 far away from the waist plate 31 is larger than the contour of the surface of the sealing plug 4 facing the waist plate 31. I.e. the outer periphery of the sealing plug 4 is bevelled to facilitate insertion into the kidney-shaped hole 11.

As a further improvement to the above scheme, an annular groove is formed in the periphery of one end of the screw 32 facing the waist-shaped plate 31. The waist-shaped plate 31 is connected with the screw 32, and can be welded in small batch and die-forged in large batch. When welding processing is adopted, the annular groove is used as a receiving groove of a welding line, so that the contour of the welding line does not exceed the contour of the external thread, and the sealing plug 4 can be attached to the surface of the waist-shaped plate 31 after being sleeved into the screw 32; when die forging is used, the annular groove serves as a thread relief groove.

As a further improvement to the above-mentioned scheme, the sealing plug 4 is formed by splicing a left sealing body (not shown) and a right sealing body (not shown), a left semicircular screw hole is formed in one side of the left sealing body facing the right sealing body, a right semicircular screw hole is formed in one side of the right sealing body facing the left sealing body, and the left semicircular screw hole and the right semicircular screw hole are spliced to form a complete threaded hole. The processing mode is that firstly, a waist-shaped block is cut from a raw material, a threaded hole is processed in the middle, and then the middle of the threaded hole is cut into two parts. Therefore, when the bolt body 3 is inserted, the left sealing body and the right sealing body can be directly pressed at the bottom of the screw rod 32 and pushed into the kidney-shaped hole 11 without screwing in from the top end of the screw rod 32, and the screw rod 32 is prevented from being too long and the operation time is too long. Preferably, the left sealing body and the right sealing body are pressed after glue is applied to the left semicircle screw hole and the right semicircle screw hole.

The unilateral screwing bolt for the engine room cover solves the problem that when an operator only can operate on one side of the connecting surface and needs to connect a bolt pair on the connecting surface, the bolt cannot be fixed on the other side of the connecting surface. In the later maintenance process of the unit, when equipment and instruments need to be additionally arranged at the bottom or the side edge of the cabin cover, a more firm and stable installation mode is provided.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. A unilateral tightening bolt for an engine room cover is characterized by comprising a bolt body (3) and a sealing plug (4); the bolt body (3) comprises a waist-shaped plate (31), a screw rod (32) and a rod head (33); the waist-shaped plate (31) is used for penetrating through the cabin cover (1) through a waist-shaped hole (11) formed in the shell of the cabin cover (1), one end of the screw rod (32) is fixedly connected with the surface of one side of the waist-shaped plate (31), the other end of the screw rod (32) is provided with the rod head (33), the rod head (33) is in a regular polygon shape so as to be convenient for spanner operation, the outer wall of the rod head (33) is provided with a rotation in-place mark, and the vertical line of the axis of the rotation in-place mark and the rod head (33) is parallel to or perpendicular to the long axis of the waist-shaped hole (11); the sealing plug (4) is in threaded connection with the screw rod (32), and the outer contour of the sealing plug (4) is matched with the inner contour of the waist-shaped hole (11) so as to be embedded into the waist-shaped hole (11).

2. The single-sided screw bolt for an engine room cover according to claim 1, wherein the contour of the surface of the sealing plug (4) on the side away from the waist plate (31) is larger than the contour of the surface of the sealing plug (4) on the side toward the waist plate (31).

3. Single-hand-screwed bolt for nacelle covers according to claim 1, wherein the thickness of the sealing plug (4) is smaller than the wall thickness of the nacelle cover (1).

4. The single-side tightening bolt for the nacelle cover as claimed in claim 3, wherein the material of the sealing plug (4) is glass fiber reinforced nylon plastic.

5. The single-side tightening bolt for the nacelle cover according to claim 1, wherein an annular groove is formed in the outer periphery of one end of the screw (32) facing the waist plate (31).

6. The unilateral tightening bolt for the nacelle cover according to any one of claims 1 to 5, wherein the sealing plug (4) is formed by splicing a left sealing body and a right sealing body, wherein a left semicircular screw hole is formed in one side, facing the right sealing body, of the left sealing body, a right semicircular screw hole is formed in one side, facing the left sealing body, of the right sealing body, and the left semicircular screw hole and the right semicircular screw hole are spliced to form a complete threaded hole.

7. The single-side-tightening bolt for the nacelle cover according to any one of claims 1 to 5, wherein the rotation-in-place indicator includes a through hole (34), and the through hole (34) is provided in the outer peripheral wall of the shaft head (33).