CN210925843U

CN210925843U - Universal extension arm for isolating switch crank arm

Info

Publication number: CN210925843U
Application number: CN201922288650.1U
Authority: CN
Inventors: 王赟超; 赵智韬; 石刚; 衣鹏飞; 孙志; 韩彬彬
Original assignee: State Grid Corp of China SGCC; KME Sp zoo
Current assignee: State Grid Corp of China SGCC; KME Sp zoo
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-07-03
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a general extension arm used on an isolating switch crank arm, which comprises a first sleeve and a second sleeve which are coaxially arranged and fixedly connected into a whole, wherein one end of the first sleeve is connected with one end of the second sleeve; the diameter of the first sleeve is 4.5-5.5 cm, and the diameter of the second sleeve is 2.5-3 cm. The utility model discloses it is suitable to be convenient for become the turning arm that original thickness differs in size and feel, the turning arm of easily operating to reach convenient more, swift and carry out deciliter operation to isolator, reduce staff's fault rate, improve the purpose of work security. The utility model is suitable for an on the isolator of 35kV transformer substation for original connecting lever on the isolator of extension 35kV transformer substation.

Description

Universal extension arm for isolating switch crank arm

Technical Field

The utility model belongs to the technical field of isolator, a extension arm is related to, specifically speaking is a general type extension arm for on isolator turning arm.

Background

With the high-speed development of economy in China, electricity consumption is increased rapidly, power supply reliability is more important, a 35kV transformer substation plays an important role from power transformation to the last ring of power utilization, an isolating switch is the most frequently used equipment in the 35kV transformer substation, and the isolating switch controls power failure and power transmission of the 35kV transformer substation. However, the process of operating the isolating switch is very complicated, and the isolating switch needs to be switched on and off by a worker through a crank arm every time.

Due to the particularity of the transformer substation, technical transformation can be carried out only, and reconstruction cannot be removed, so that the transformer substation is put into operation for decades, after technical transformation and overhaul for a plurality of times, the types of isolating switches are complicated, and the thicknesses of crank arms are different; and frequent use causes the rust-proof zinc coating of most crank arms to fall off nowadays. The transformer substation duty personnel can cause certain error very easily when operating the isolating switch with complicated and different types and different names, and lead to the isolating switch not being in place, thereby leading to certain safety risk in the 35kV transformer substation.

SUMMERY OF THE UTILITY MODEL

For solving exist among the prior art more not enough, the utility model aims at providing a general type extension arm for on isolator turning arm to turn into the turning arm that original thickness differs in size and feel suitable, the turning arm of easy operation, thereby reach convenient more, swift and carry out deciliter operation to isolator, reduce staff's fault rate, improve the purpose of work security.

In order to achieve the above object, the utility model adopts the following technical scheme: a universal extension arm for an isolating switch crank arm comprises a first sleeve and a second sleeve which are coaxially arranged and fixedly connected into a whole, wherein one end of the first sleeve is connected with one end of the second sleeve; the diameter of the first sleeve is 4.5-5.5 cm, and the diameter of the second sleeve is 2.5-3 cm.

As the utility model discloses a limit, first sheathed tube length is 10 ~ 12 cm.

As the utility model discloses a limit, the length of second sleeve pipe is 28 ~ 30 cm.

As the utility model discloses a further inject, first sleeve pipe, the sheathed tube connecting end portion can be dismantled the suit each other and fix.

As the utility model discloses a limit, first sleeve pipe and second sleeve pipe are 5 mm's of wall thickness galvanized steel pipe.

As a further limitation of the utility model, the first sleeve has a diameter of 5cm and a length of 12 cm; the second cannula was 2.5cm in diameter and 28cm in length.

As a further limitation of the present invention, the free end of the first sleeve is provided with two symmetrical grooves, and the two grooves are located at two ends of the first sleeve with the same diameter;

two symmetrical grooves are formed in the free end of the second sleeve and are located at two ends of the second sleeve, wherein the two grooves are located at the two ends of the second sleeve, and the two ends have the same diameter.

Since the technical scheme is adopted, compared with the prior art, the utility model, the beneficial effect who gains is:

(1) the utility model discloses a general type extension arm, and it comprises two different sleeve pipes of diameter, can select the sleeve pipe of suitable diameter according to actual work environment to embolia it or insert in original crank arm. The diameters of the two sleeves are 4.5-5.5 cm and 2.5-3 cm respectively, so that the device can meet the requirements of isolating switches with complex models and different old models; the isolating switch connecting levers with different thicknesses are changed into connecting levers with proper hand feeling and easy operation, so that the isolating switch can be more conveniently and quickly separated and combined by workers, the working efficiency is improved, and the operation time is saved;

(2) the total length of the universal extension arm disclosed by the utility model is about 40cm, which is the best length which can meet the working requirement and is determined after a large amount of experimental research; the two sleeves are made of steel pipes with the wall thickness of 5mm, so that the weight is light and the carrying is easy; the steel pipe is used as a raw material, so that the manufacturing cost is reduced on the premise of ensuring firmness and durability;

(3) the utility model discloses first sleeve pipe, the sheathed tube link of second can dismantle the suit each other and fix together to threaded connection is the example: when not in use, the device can effectively shorten the length of the whole device, so that the device is more convenient to carry; when the device is used, extension arms with different lengths can be provided according to habits of different people, and the practicability of the device is improved. And set up the recess at sheathed tube free end for when the device cover was put on original connecting lever, can put the stopper card on original connecting lever in the recess, further restricted this device rotation, the removal in the use, effectually prevented that the device probably breaks away from the danger of original connecting lever when using, improved the security and the reliability of device.

To sum up, the utility model is simple in operation, the practicality is strong, the utility model is suitable for an on the 35kV transformer substation isolator for original connecting lever on the extension 35kV transformer substation isolator.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an original crank arm of a disconnecting switch in the prior art.

In the figure: 1. a first sleeve; 2. a second sleeve; 3. a groove; 4. and a limiting stopper.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the preferred embodiments described herein are for purposes of illustration and understanding only and are not intended to limit the invention.

Embodiment is a general extension arm for isolating switch crank arm

As shown in fig. 1, the present embodiment includes a first sleeve 1 and a second sleeve 2 fixedly connected to one body, and the first sleeve 1 and the second sleeve 2 are coaxial.

In order to enable the device to be better suitable for isolating switch crank arms of different models, the first sleeve 1 is a galvanized steel pipe with the diameter of 4.5-5.5 cm, and the second sleeve 2 is a galvanized steel pipe with the diameter of 2.5-3 cm (the wall thickness of the galvanized steel pipe is 5 mm). In order to enable the first sleeve 1 and the second sleeve 2 to be selectively inserted or sleeved into the original crank arm of the isolating switch according to different field conditions, the free ends of the first sleeve 1 and the second sleeve 2 are both arranged in an open form. Two grooves 3 are respectively formed in the free ends of the first sleeve 1 and the second sleeve 2, the two grooves 3 in the same sleeve are located at two ends of the same diameter of the section of the sleeve, and the grooves 3 are semicircular. Therefore, when the device is sleeved in the original crank arm of the isolating switch, the stopper 4 on the original crank arm can be clamped in the groove 3, the displacement of the device can be effectively prevented, and the device can be separated from the original crank arm even when in use.

According to the working experience, when the original crank arm of the isolating switch has a larger diameter, the length of the isolating switch is generally shorter (the original crank arm is short and thick); when the original crank arm of the isolating switch is smaller in diameter, the length of the isolating switch is generally longer (the original crank arm is long and thin). After a large number of tests, the optimal length range of the original crank arm of different isolating switches can be adapted to when the length of a first sleeve 1 with the diameter of 4.5-5.5 cm is 10-12 cm and the length of a second sleeve 2 with the diameter of 2.5-3 cm is 28-30 cm. When the diameter of the first sleeve 1 is 5cm, the length is 12 cm; the second casing 2 is 2.5cm in diameter and 28cm in length, which is the optimal length for the device to meet the working requirements.

The connection relationship between the first sleeve 1 and the second sleeve 2 can be a threaded connection, the first sleeve 1 is sleeved on the second sleeve 2, and the inner surface of the first sleeve 1 and the outer surface of the second sleeve 2 are provided with matched threads. In order to screw the first casing 1 and the second casing 2 together, the diameters of the connecting ends of the first casing 1 and the second casing 2 are adjusted adaptively, that is, the diameter of the connecting end of the first casing 1 is slightly smaller, and the diameter of the second casing 2 is slightly larger. In order to prevent the first casing 1 and the second casing 2 from being separated, both ends of the inner surface of the first casing 1 and the outer surface of the second casing 2 are provided with a smooth section without threads. Of course, the first casing 1 and the second casing 2 may be in a plug-in type detachable connection relationship.

When the universal extension arm is used, the length and the thickness of the original crank arm on the isolating switch are observed, the universal extension arm is adjusted to be a proper length, and then the first sleeve 1 or the second sleeve 2 of the universal extension arm is inserted into or sleeved into the original crank arm according to the actual working environment. The universal extension arm rotates along the horizontal direction, so that the original crank arm is driven to rotate, and the clavate porcelain columns on two sides are driven to rotate 90 degrees respectively along the opposite directions by the driving of the transmission shaft through the connecting rod mechanism in the isolating switch, so that the disconnecting link rotates horizontally, and the disconnecting link is separated and closed.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or some technical features can be replaced with equivalents. 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.

Claims

1. The utility model provides a general type extension arm for on isolator turning arm which characterized in that: the device comprises a first sleeve and a second sleeve which are coaxially arranged and fixedly connected into a whole, wherein one end of the first sleeve is connected with one end of the second sleeve; the diameter of the first sleeve is 4.5-5.5 cm, and the diameter of the second sleeve is 2.5-3 cm.

2. The universal extension arm for the crank arm of the disconnecting switch as claimed in claim 1, wherein: the length of the first sleeve is 10-12 cm.

3. The universal extension arm for the crank arm of the disconnecting switch as claimed in claim 1 or 2, wherein: the length of the second sleeve is 28-30 cm.

4. The universal extension arm for the crank arm of the disconnecting switch as claimed in claim 3, wherein: the connecting end parts of the first sleeve and the second sleeve are mutually detachably sleeved and fixed.

5. The universal extension arm for the crank arm of the disconnecting switch as claimed in any one of claims 1-2 and 4, wherein: the first sleeve and the second sleeve are galvanized steel pipes with the wall thickness of 5 mm.

6. The universal extension arm for the crank arm of the disconnecting switch as claimed in claim 5, wherein: the diameter of the first sleeve is 5cm, and the length of the first sleeve is 12 cm; the second cannula was 2.5cm in diameter and 28cm in length.

7. The universal extension arm for the crank arm of the disconnecting switch as claimed in claim 5, wherein: the free end of the first sleeve is provided with two symmetrical grooves, and the two grooves are positioned at two ends of the first sleeve with the same diameter;