阅读说明：本技术 一种基于钛镍基合金记忆效应的隔离开关防松装置及方法 (Anti-loosening device and method for isolating switch based on titanium-nickel-based alloy memory effect ) 是由 乔小冬 王永峰 姜广鑫 刘斌 韩德玥 王英爽 郑春祥 杜亚男 胡健 白一男 张强 于 2019-11-12 设计创作，主要内容包括：本发明提供一种基于钛镍基合金记忆效应的隔离开关防松装置,包括垫片,所述垫片包括环体和止动耳,所述环体上设有止动耳,所述环体的端面设有防滑齿,所述环体和所述止动耳为一体结构,所述环体和所述止动耳的材质为镍钛形状记忆合金。本发明解决现有隔离开关螺栓连接部位的防松问题。(The invention provides an anti-loosening device of an isolating switch based on a titanium-nickel-based alloy memory effect, which comprises a gasket, wherein the gasket comprises a ring body and a stopping lug, the stopping lug is arranged on the ring body, anti-skidding teeth are arranged on the end surface of the ring body, the ring body and the stopping lug are of an integrated structure, and the ring body and the stopping lug are made of nickel-titanium shape memory alloy. The invention solves the anti-loosening problem of the bolt connection part of the existing isolating switch.)

1. The anti-loosening device for the isolating switch based on the titanium-nickel-based alloy memory effect is characterized by comprising a gasket, wherein the gasket comprises a ring body and a stopping lug, the stopping lug is arranged on the ring body, anti-skidding teeth are arranged on the end face of the ring body, the ring body and the stopping lug are of an integrated structure, and the ring body and the stopping lug are made of nickel-titanium shape memory alloy.

2. The anti-loose device for the disconnecting switch based on the memory effect of the titanium-nickel-based alloy according to claim 1, wherein the atomic ratio of nickel to titanium in the nickel-titanium shape memory alloy is 50.5:49.5, and the weight ratio of nickel to titanium in the nickel-titanium shape memory alloy is 55.57: 44.43.

3. the anti-loosening device for the isolating switch based on the memory effect of the titanium-nickel-based alloy as claimed in claim 1, wherein the anti-slipping teeth are arranged on one side or two side end faces of the ring body.

4. The anti-loosening device for the disconnecting switch based on the memory effect of the titanium-nickel-based alloy, as claimed in claim 1, wherein the tooth tip of the anti-slip tooth is arranged obliquely in a clockwise direction relative to the tooth root direction.

5. The anti-loosening device for the isolating switch based on the memory effect of the titanium-nickel-based alloy as claimed in claim 1, wherein the anti-slipping teeth are uniformly distributed on the end face of the ring body.

6. An anti-loosening method for an isolating switch based on a titanium-nickel-based alloy memory effect is characterized by comprising the following steps of: the gasket adopting the nickel-titanium shape memory alloy is arranged between the connected piece and the bolt or the nut, the locking lug on the gasket is heated by the heating source after the bolt or the nut is screwed, and the locking lug can deform to finish the anti-loose installation.

7. The anti-loosening method for the isolating switch based on the memory effect of the titanium-nickel-based alloy, as recited in claim 6, wherein a constant-temperature uniform blowing device is adopted as a heating source in the installation method.

Technical Field

The invention belongs to the technical field of anti-loosening of isolating switches, and particularly relates to an anti-loosening device and method for an isolating switch based on a titanium-nickel-based alloy memory effect.

Background

As is known to all, the isolating switch needs to bear large impact when being opened and closed, the existing bolt connection is easy to loosen under the impact and self vibration, and the loosening or falling of the bolt often causes equipment vibration and part damage. The common anti-loose methods for the isolating switch include three methods: friction locking, mechanical locking and permanent locking.

There are two important forms of existing mechanical anti-loosening of disconnectors: the method for manufacturing the round nut and the stop moving gasket comprises the following steps: the inner tongue of the washer is inserted into the groove of the bolt (shaft), and after the nut is tightened, a pleat of the outer tongue of the washer is inserted into a groove of the nut. The locking washer is made by bending and sticking the single-lug or double-lug locking washer to the side of the nut and the connected part respectively after the nut is screwed down, so as to realize locking. If two bolts need to be locked in a duplex way, a duplex stop washer can be adopted.

Above two kinds of locking forms all need the pliers to bend the locking ear after the nut is screwed up, and to the gasket of small dimension, because the gasket is thinner, stress is less during the bending, can bend the locking ear. However, the large-size gasket is not easy to bend due to large thickness, and if the gasket works at high altitude, the operation difficulty is increased. Leading to the increase of the maintenance time in power failure and the loss of social benefits.

Disclosure of Invention

The invention aims to provide a titanium-nickel-based alloy memory effect-based anti-loosening device and method for an isolating switch, and solves the anti-loosening problem of the bolt connection part of the existing isolating switch.

The invention provides the following technical scheme:

the utility model provides an isolator locking device based on titanium nickel base alloy memory effect, includes the gasket, the gasket includes ring body and locking ear, be equipped with the locking ear on the ring body, the terminal surface of ring body is equipped with anti-skidding tooth, the ring body with the locking ear structure as an organic whole, the ring body with the material of locking ear is nickel titanium shape memory alloy.

Preferably, the nickel-titanium shape memory alloy has an atomic ratio of nickel to titanium of 50.5:49.5, and the nickel-titanium shape memory alloy has a weight ratio of nickel to titanium of 55.57: 44.43.

preferably, the anti-slip teeth are arranged on one side or two side end faces of the ring body.

Preferably, the tooth tip of the anti-slip tooth is arranged obliquely in a clockwise direction relative to the tooth root direction.

Preferably, the anti-slip teeth are uniformly distributed on the end face of the ring body.

An anti-loosening method for an isolating switch based on a titanium-nickel-based alloy memory effect comprises the following steps: the gasket adopting the nickel-titanium shape memory alloy is arranged between the connected piece and the bolt or the nut, the locking lug on the gasket is heated by the heating source after the bolt or the nut is screwed, and the locking lug can deform to finish the anti-loose installation.

Preferably, the heating source in the installation method adopts a constant-temperature uniform air blowing device.

The invention has the beneficial effects that: the titanium-nickel-based alloy adopted by the invention is processed into the stop gasket based on the unique memory effect, and can be installed only by heating the stop lug during installation, so that the titanium-nickel-based alloy has the characteristics of simple and rapid installation and high reliability; the invention solves the difficult problem that the stop lug of the traditional large-size carbon steel or stainless steel stop gasket is not easy to bend due to the unique memory effect of the titanium-nickel alloy; the titanium-nickel-based memory alloy also has excellent corrosion resistance, is particularly suitable for long-term operation of the outdoor isolating switch in the environment of wind, frost, rain and snow, and can ensure that the fastening force is not loosened for a long time; the anti-loosening method for the isolating switch is quick to install, high in reliability, simple to process and stable in performance, and can reduce the field installation time and the installation difficulty of the isolating switch and reduce the power failure cost during operation and maintenance through test verification.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention before deformation;

FIG. 3 is a schematic view of the anti-slip tooth structure of the present invention;

FIG. 4 is a front view of the anti-slip tooth of the present invention;

FIG. 5 is a schematic view of the mounting structure of the present invention;

FIG. 6 is a graph showing the anti-loosening effect of the vibration test according to the present invention;

labeled as: 1. a ring body; 2. a stop lug; 3. anti-slip teeth; 31. a tooth tip; 32. a tooth root; 5. a connecting member; 61. a bolt; 62. and a nut.

Detailed Description

As shown in fig. 1-3, an anti-loose device for an isolating switch based on a memory effect of a titanium-nickel-based alloy comprises a ring body 1 and at least one locking lug 2, wherein the ring body 1 is made of an alloy with a shape memory effect, an anti-slip tooth 3 is arranged on an end surface of the ring body, the alloy with the shape memory effect is a nickel-titanium shape memory alloy, and the weight ratio of the nickel-titanium shape memory alloy to the anti-slip tooth is as follows: ti was 50.5:49.5 (atomic ratio), and the chemical composition (weight ratio) of the material (sampled from ingot) was as follows: ni: 55.57; ti: 44.43, respectively; co: less than or equal to 0.05; c: less than or equal to 0.01; cr: less than or equal to 0.01; fe: less than or equal to 0.05; c: less than or equal to 0.04; h: less than or equal to 0.005; o: less than or equal to 0.03.

Specifically, one or more stop lugs 2 are provided, and in the present embodiment, there are 2 stop lugs.

As shown in fig. 3 and 4, the ring body 1 is seen from the front, the tooth tips 31 of the anti-slip teeth 3 are inclined clockwise relative to the tooth root 32, the number of the anti-slip teeth 3 is one or more, the number of the anti-slip teeth is 4 in the embodiment, the anti-slip teeth 3 are uniformly distributed or non-uniformly distributed on the circumferential end surface, the anti-slip teeth 3 are uniformly distributed in the embodiment, and the anti-slip effect of the ring body 1 is improved.

Referring to fig. 5, the memory alloy anti-loosening gasket is installed between the connected member 5 and the bolt 61 or the nut 62, the bolt 61 or the nut 62 is screwed, and then the stopping lug 2 is heated by the heating source, so that the stopping lug 2 is deformed, and the installation is completed.

As shown in fig. 5 and 6, the results of the transverse vibration test of the fastener show that the anti-loosening performance of the anti-loosening connection using the anti-loosening connection is greatly improved compared with that of the anti-loosening connection using the flat gasket.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.