CN218817505U - Bolt fracture anti-falling device and positioning system - Google Patents

Abstract

The utility model discloses a bolt fracture anti falling device and positioning system, include, traction unit, including the protective sheath, set up in a plurality of knot caps of the outer circumference of protective sheath to and set up in the locking bolt at protective sheath top. The beneficial effects of the utility model are that can pull the fracture bolt fracture of the variable pitch bearing of fan paddle flange department fixedly, the fracture bolt that prevents to drop causes the harm to other parts of unit or component.

Description

Bolt fracture anti-falling device and positioning system

Technical Field

The utility model relates to a technical field, especially a bolt fracture anti falling device and positioning system are maintained to fan paddle.

Background

In the running process of a wind turbine generator, workers frequently find that bolts of a pitch bearing of the wind turbine generator are frequently broken due to uneven stress or transverse shearing force of the bearing, wind power cannot timely find the breaking condition of the bolts of the wind turbine generator after breaking, so that the broken bolts of the pitch bearing of the wind turbine generator break a sensor or a limiting baffle, a device capable of protecting the broken bolts from falling out of screw holes is designed, the bolts are guaranteed not to fall out or clamp a flange surface under the breaking condition, and accessories in a pitch shaft cabinet of the wind turbine generator are not broken due to falling out of the broken bolts.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

In view of the above-mentioned prior art problem, the utility model discloses.

The utility model aims at providing a bolt fracture anti-drop device, its aim at solve wind turbine generator system become oar bearing bolt and lead to the bolt frequent fracture because of the atress is inhomogeneous or receive the horizontal shearing force of bearing, lead to the paddle bolt to beat the problem of bad sensor or limit baffle.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a bolt fracture anti-drop device, its includes the traction unit, including the protective sheath, set up in a plurality of knot caps of the outer circumference of protective sheath, and set up in the locking bolt at protective sheath top.

As the utility model discloses bolt fracture anti-drop device's an preferred scheme, wherein: the protective sheath including set up in the first screw thread of its inner wall, set up in a plurality of backup pads of the outer circumference of protective sheath, and set up in the buckle at backup pad top.

As the utility model discloses bolt fracture anti-drop device's an preferred scheme, wherein: the buckle includes the arc of a plurality of circumference array distributions, and set up in the taper piece at arc top.

As the utility model discloses bolt fracture anti-drop device's an preferred scheme, wherein: gaps are reserved between the arc plates.

As the utility model discloses bolt fracture anti-drop device's an preferred scheme, wherein: the snap cap includes a pair of ring blocks and a flexible rod disposed between the pair of ring blocks.

As the utility model discloses bolt fracture anti-drop device's an preferred scheme, wherein: the locking bolt comprises a matching groove arranged on the outer circumference of the locking bolt and a plurality of locking holes which are arranged on the top of the locking bolt in a penetrating way.

As the utility model discloses bolt fracture anti-drop device's an preferred scheme, wherein: and the locking hole is internally provided with a thread.

As the utility model discloses bolt fracture anti falling device's an optimal selection scheme, wherein: the buckle cap is respectively connected with two adjacent protective sleeves.

The utility model discloses a bolt fracture anti-drop device's beneficial effect does: the broken bolts of the variable-pitch bearing at the flange of the fan blade can be broken and fixed, and the broken bolts which fall off are prevented from damaging other parts or elements of the unit.

Another object of the utility model is to provide a positioning system, its aim at solve the difficult problem of fixing and aiming at the paddle pivot of position sensor.

In order to solve the technical problem, the utility model discloses still provide following technical scheme: a positioning system comprising a bolt fracture drop prevention device; and the bearing unit comprises a bracket and a plurality of ties.

As the utility model discloses a preferred scheme of positioning system, wherein: the support includes the annular cover to and set up in the support bar of annular cover one side.

The utility model discloses a positioning system beneficial effect does: the position sensor can be fixed and its orientation can be adjusted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:

fig. 1 is an overall three-dimensional view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a local effect display diagram of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 3, for the first embodiment of the present invention, this embodiment provides a bolt breakage anti-drop device, which includes a traction unit 100, including a protection sleeve 101, a plurality of caps 102 arranged on the outer circumference of the protection sleeve 101, and a locking bolt 103 arranged on the top of the protection sleeve 101.

Further, the protection sleeve 101 includes a first thread 101a disposed on an inner wall thereof, a plurality of support plates 101b disposed on an outer circumference of the protection sleeve 101, and a buckle 101c disposed on a top of the support plates 101 b.

Further, the buckle 101c comprises a plurality of arc-shaped plates 101c-1 distributed in a circumferential array, and a conical block 101c-2 arranged at the top of the arc-shaped plates 101 c-1.

Further, there is a gap between the arc-shaped plates 101 c-1.

Further, the snap cap 102 includes a pair of ring blocks 102a, and a flexible rod 102b disposed between the pair of ring blocks 102a.

Further, the locking bolt 103 includes a fitting groove 103a provided at an outer circumference thereof, and a plurality of locking holes 103b penetrating a top portion of the locking bolt 103.

Further, the locking hole 103b is internally threaded.

Further, the snap caps 102 are respectively connected to two adjacent protective sleeves 101.

It should be noted that, in order to solve the problem of unit faults caused by damage to a blade position sensor after a unit variable-pitch bolt M is broken, a reliable protection device is researched to fix the broken bolt, a screw hole is not thrown out by the bolt under a stress condition, and equipment in a shaft cabinet is not damaged, the variable-pitch bolt M at 0-90-degree positions of three blades of the unit is designed to be connected in series in a hand-in-hand manner, and a plurality of nuts are connected through a chain. Fig. 1 is a schematic view of the installation effect.

Preferably, the pulling unit 100 needs two or more than two to function, the protective sleeve 101 can be directly screwed with the pitch bolt M through the first thread 101a, the protective sleeve 101 can still be in a connected state when the pitch bolt M is broken, the support plates 101b are arrayed and fixed at the circumference of the protective sleeve 101, four in this embodiment, at least two support plates 101b are needed in practical use, a buckle 101c is fixed on the surface of each support plate 101b and used for matching with the annular block 102a, the buckle 101c is composed of four arc-shaped plates 101c-1 distributed in a circumferential array, the conical block 101c-2 is fixed at the top of each arc-shaped plate 101c-1, the conical block 101c-2 is also arc-shaped and has a maximum radius slightly larger than that of the arc-shaped plates 101c-1, when the annular block 102a is buckled to the buckle 101c, firstly, the conical block 101c-2 enters the annular block 102a, then the annular block 102a is compressed under the annular block 102a inner wall, each conical block 101c-2 points to a circle through a gap between the arc-shaped plates 101c-1, until the buckle 101c-1 completely bends and the annular block 101c can not pass through the buckle 101c-1, and then the annular block 101c can not be restored to the conical block 101c-2, and the buckle 101c can not be connected to the conical block 101c can be connected to the conical block 101 c-1.

Preferably, there are two ring blocks 102a on the snap cap 102. The two annular blocks 102a are fixedly connected through the flexible rod 102b, the flexible rod 102b can be bent and has certain toughness, therefore, the buckle cap 102 can simultaneously connect two adjacent protective sleeves 101 through respective buckles 101c, and when one of the protective sleeves 101 falls off, the protective sleeve can be pulled through the flexible rod 102b to prevent falling.

Preferably, the locking bolt 103 can be in the top or below of protective sheath 101, with become oar bolt M threaded connection, the cooperation groove 103a is located the outer wall middle section part of locking bolt 103, can be used for installing support 201, on the corner of locking bolt 103, be equipped with the three locking hole 103b that runs through completely, locking hole 103b inner wall has the screw thread, can be connected with the bolt, three locking hole 103b is evenly distributed state, consequently, locking bolt 103 no matter the positive and negative all can be put into little bolt in arbitrary locking hole 103b and fix support 201.

When the device is used, the protective sleeves 101 are fixed by threads at the positions of the variable pitch bolts M at 0-90 degrees of the blades, then the protective sleeves 101 which are installed in pairs are clamped and connected by the buckles 101c of the protective sleeves through the buckle caps 102, and finally the corresponding variable pitch bolts M are connected with the locking bolts 103 through threads until the installation is finished.

In conclusion, this design can be with the fracture of the fracture bolt fracture of fan paddle flange department change oar bearing pull fixedly, prevents that the fracture bolt that drops from causing the harm to other parts or components of unit.

Example 2

Referring to fig. 1 and 3, a second embodiment of the present invention further provides a positioning system. Comprising a carrying unit 200 comprising a bracket 201 and a plurality of straps.

Further, the bracket 201 includes a ring-shaped sleeve 201a, and a supporting bar 201b disposed on one side of the ring-shaped sleeve 201 a.

It should be noted that, the bracket 201 can be matched with the matching groove 103a through the annular sleeve 201a, so that the bracket 201 can rotate at the matching groove 103a, the supporting strip 201b is fixedly connected with the annular sleeve 201a, and plays a role of pointing to the rotating shaft of the blade, and when a locking hole 103b is optionally arranged on one surface of the locking bolt 103 and the bolt is screwed in, the locking and fixing of the bracket 201 can be realized. The support bars 201b are used for mounting and bearing the position sensor, and the bandage can directly fix the position sensor and the support bars 201b, so that the position sensor points to the blade rotating shaft.

Preferably, the conventional position sensor is an infrared sensor, and most of the shape is cylindrical.

Preferably, the orientation of each support bar 201b does not need to specifically point to a certain intersection nine, and the position sensor can judge that the position sensor and the rotating shaft of the blade change.

When the locking device is used, after the traction unit 100 is installed, the rotating position of the support 201 is adjusted, the support bar 201b points to the rotating shaft of the blade, and finally, a bolt is screwed into any one of the locking holes 103b to lock the support 201.

At this time, if the pitch bolt M is broken, the position sensor drops along with the position sensor, and the position sensor can send a signal after the position is changed, and the position sensor is also dragged by the buckle cap 102.

Specifically, the protection position sensor or the distance sensor sends an alarm signal to the PLC, and the wind power plant completes the replacement of the variable-pitch bolt M at the first time after receiving the signal, so that the damage of unnecessary spare parts of the unit and the unplanned shutdown are avoided. The position sensor is installed near a nut of each variable pitch bolt M and is responsible for monitoring the distance between the support 201 and a blade rotating shaft, after the distance changes, position signals are transmitted to the master control through the PLC, the master control sends out alarm signals, operation and maintenance personnel finish corresponding patrol and replacement of the variable pitch bolt M according to the signals, each variable pitch bolt M and an actual change position can be practically protected, the operation condition of the variable pitch bolt M is accurately judged, and the bolt fracture protection device is provided.

In conclusion, the design can fix the position sensor and adjust the direction of the position sensor.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a bolt fracture anti-drop device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the traction unit (100) comprises a protective sleeve (101), a plurality of buckle caps (102) arranged on the outer circumference of the protective sleeve (101), and a locking bolt (103) arranged at the top of the protective sleeve (101).

2. The bolt breakage falling prevention device according to claim 1, wherein:

the protective sleeve (101) comprises a first thread (101 a) arranged on the inner wall of the protective sleeve, a plurality of supporting plates (101 b) arranged on the outer circumference of the protective sleeve (101), and a buckle (101 c) arranged at the top of the supporting plates (101 b).

3. The bolt breakage falling prevention device according to claim 2, wherein:

the buckle (101 c) comprises a plurality of arc-shaped plates (101 c-1) distributed in a circumferential array, and a conical block (101 c-2) arranged at the top of each arc-shaped plate (101 c-1).

4. The bolt breakage fall prevention device according to claim 3, characterized in that:

gaps are reserved between the arc plates (101 c-1).

5. The bolt breakage falling prevention device according to any one of claims 1 to 4, wherein:

the snap cap (102) includes a pair of ring blocks (102 a), and a flexible rod (102 b) disposed between the pair of ring blocks (102 a).

6. The bolt breakage falling prevention device according to claim 5, wherein:

the locking bolt (103) comprises a matching groove (103 a) arranged on the outer circumference of the locking bolt and a plurality of locking holes (103 b) arranged on the top of the locking bolt (103) in a penetrating way.

7. The bolt breakage falling prevention device according to claim 6, wherein:

the locking hole (103 b) is internally provided with threads.

8. The bolt breakage falling prevention device according to claim 7, wherein:

the buckle cap (102) is respectively connected with two adjacent protective sleeves (101).

9. A positioning system, characterized by: comprising the bolt breakage falling prevention device according to any one of claims 1 to 8; and the number of the first and second groups,

a load carrying unit (200) comprising a bracket (201) and a plurality of straps.

10. The positioning system of claim 9, wherein:

the support (201) comprises an annular sleeve (201 a) and a supporting strip (201 b) arranged on one side of the annular sleeve (201 a).

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