CN112670138A - Operating rod - Google Patents
Operating rod Download PDFInfo
- Publication number
- CN112670138A CN112670138A CN202010106352.0A CN202010106352A CN112670138A CN 112670138 A CN112670138 A CN 112670138A CN 202010106352 A CN202010106352 A CN 202010106352A CN 112670138 A CN112670138 A CN 112670138A
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- China
- Prior art keywords
- fuse tube
- main body
- operation rod
- fuse
- operating rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 239000012212 insulator Substances 0.000 description 27
- 238000009826 distribution Methods 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Fuses (AREA)
Abstract
The invention provides a novel operating rod capable of reliably dismounting a fuse tube. The operation rod includes an operation rod main body and a support member. The operating rod main body is provided with a cylindrical housing portion capable of housing an end portion of the fuse tube. The support member has a plurality of columnar portions extending from a mounting portion mounted to the outer periphery of the operation rod main body so as to be rotatable with respect to the operation rod main body to positions protruding from an end surface of the housing portion. An engaging portion extending along the circumferential direction of the housing portion and protruding toward the axial direction of the housing portion is provided on the inner circumferential surface of the housing portion, and when the fuse tube is detached from the high-voltage disconnector, the engaging portion engages with a protruding portion provided on the outer circumferential surface of the fuse tube, thereby preventing the fuse tube from being separated from the operating rod main body. Further, a hook portion protruding toward the axis of the housing portion is provided at the tip of the columnar portion, and the hook portion engages with a flange portion provided on the outer peripheral surface of the fuse tube when the fuse tube is attached to and detached from the high-voltage disconnector.
Description
Technical Field
The present specification discloses a technique related to an operating rod for disassembling and assembling a fuse tube used for a high-voltage disconnector.
Background
In order to protect a transformer and the like, one of: a high voltage breaker (cut out) of a fuse tube is housed in a porcelain insulator. When opening and closing the distribution line or replacing the fuse tube, the operator uses the operating rod to attach and detach the fuse tube in order to ensure safety and ease of operation. Patent document 1 discloses an operation rod including: an elastic plate capable of engaging with the fuse tube. The operation rod of patent document 1 has a hook portion provided at the tip of an elastic plate. When the fuse tube is attached to the high-voltage breaker, the operating rod is pressed against the fuse tube, the hook portion is engaged with the flange portion provided in the fuse tube, and the fuse tube is inserted into the high-voltage breaker again in a state where the fuse tube is fixed to the operating rod. When the operating rod is pressed against the fuse tube after the fuse tube is attached to a predetermined position of the high-voltage breaker, the elastic plate is deformed (outwardly opened), and the hook portion and the flange portion are disengaged (the operating rod is separated from the fuse tube). When the fuse tube is detached from the high-voltage breaker, the operating rod is pressed against the fuse tube to engage the hook portion with the fuse tube, and the fuse tube is pulled out from the high-voltage breaker in a state in which the fuse tube is fixed to the operating rod.
Patent document
Patent document 1: showa 35-17063
Disclosure of Invention
As described above, the fuse tube and the operating rod can be fixed by pressing the fuse tube against the operating rod (or pressing the operating rod against the fuse tube) with the operating rod of patent document 1. Further, when the fuse tube is separated from the operating rod after the fuse tube is inserted into the high-voltage breaker, the operating rod is also pressed against the fuse tube. When the fuse tube is detached from the high-voltage breaker by the operating rod of patent document 1, the operating rod is strongly pressed against the fuse tube, and there are cases where: the hook portion (elastic plate) cannot engage with the flange portion of the fuse tube, and the fuse tube cannot be removed from the high-voltage breaker. More specifically, when the operating rod is strongly pressed against the fuse tube, the hook portion is temporarily engaged with the flange portion, and then the elastic plate is deformed (expanded outward), thereby disengaging the hook portion from the flange portion. In this case, the deformed elastic plate needs to be restored to its original shape and then the fuse tube needs to be removed, which results in deterioration of the work efficiency. There is also a need for an operating rod that more reliably secures and detaches the fuse canister. The purpose of this specification is to provide a novel action bars that can reliably dismouting fuse section of thick bamboo.
The operating rod disclosed in the specification is used for disassembling and assembling a fuse tube used for a high-voltage disconnector. The operation rod is provided with: an operation rod main body provided with a cylindrical receiving part at the front end; and a support member attached to an outer periphery of the operation rod main body so as to be rotatable with respect to the operation rod main body. The housing portion can house an end portion of the fuse tube. The support member has a mounting portion and a plurality of columnar portions. The attachment portion is attached to the outer periphery of the operation rod main body so as to be rotatable with respect to the operation rod main body. The columnar portion extends from the mounting portion to a position protruding from an end surface of the housing portion along an axis of the housing portion. The columnar portion supports a side portion of the fuse tube. The operation rod is composed of: an engagement portion for preventing the fuse tube from separating from the operating rod main body is provided on an inner peripheral surface of the housing portion. The engaging portion extends along the circumferential direction of the housing portion and protrudes toward the axial side of the housing portion. The engaging portion engages with a protruding portion provided on an outer peripheral surface of the fuse tube when the fuse tube is detached from the high-voltage disconnector. Further, a hook portion protruding toward the axial line of the housing portion is provided at the tip of the columnar portion, and the hook portion engages with a flange portion provided on the outer peripheral surface of the fuse tube when the fuse tube is attached to and detached from the high-voltage disconnector.
According to the above configuration, it is possible to prevent: when the fuse tube is detached from the high-voltage breaker, the fuse tube is separated from the housing portion (operating rod), and when the fuse tube is attached to the high-voltage breaker, the end portion of the fuse tube is housed in the housing portion, and the flange portion of the fuse tube is supported by the hook portion, whereby the fuse tube is fixed to the operating rod (housing portion). Thus, an operating rod capable of more reliably fixing and separating the fuse tube can be provided.
Drawings
Fig. 1 is a sectional view showing a high-pressure cutter.
Fig. 2 is a sectional view showing the operation rod.
Fig. 3 is a perspective view illustrating a state in which the operation rod is attached to the fuse tube.
Fig. 4 shows a receiving portion of the operation rod.
Fig. 5 is a diagram illustrating an operation of attaching and detaching the fuse tube to and from the operating rod.
Description of the symbols
12: a fuse cartridge; 26: a flange portion; 42: a protrusion; 70: an operating rod; 72: an axis of the receiving portion; 78: an operating rod main body; 82: a support member; 82 a: an installation part; 82 b: a columnar portion; 86: a fastening part; 88: a hook portion; 90: a storage section; 100: a high-pressure disconnector.
Detailed Description
(high pressure cutter)
The high-voltage breaker is connected between the distribution line and equipment such as a transformer via an external electric wire. The high-pressure cutter is provided with: a porcelain cylindrical main insulator and a fuse tube housed in the main insulator. High-pressure cutters are also sometimes referred to as cylindrical cutters. The fuse canister is removable from the high-voltage disconnector. When the fuse holder is inserted into the main body insulator, the distribution line is connected to a device such as a transformer (the distribution line is closed). When the fuse tube is removed from the main body insulator (breaking of the distribution line), or when a large current (a current exceeding a predetermined value) flows through the high-voltage breaker (fuse tube) and the fuse element in the fuse tube is dissolved, the distribution line between the distribution line and the device is disconnected. When the fuse element is dissolved, the distribution line and the device can be connected again by replacing the fuse tube.
(operating rod)
The operating rod is used when the fuse tube is attached to and detached from the high-voltage breaker. The operation rod is provided with: the operation rod includes an operation rod main body, a cylindrical housing portion provided at a distal end of the operation rod main body, and a support member attached to an outer periphery of the operation rod main body so as to be rotatable with respect to the operation rod main body. The operating rod main body may be several m (e.g., 1.5 to 4.5m) depending on the position (height) at which the high-pressure cutter is disposed. The operation rod main body can be divided into a plurality of rod bodies. For example, the operation rod main body may be constituted by a rod body of 1m, and may be adjusted to have a length of 1m, 2m, 3m … …, or the like.
The housing portion may be formed by processing an end portion of the operation rod main body, may be formed by fixing another member (for example, a cylindrical tubular member) to the end portion of the operation rod main body, or may be formed by processing the end portion of the operation rod main body and another member. The inner peripheral surface of the housing portion is provided with: and an engaging portion that engages with a protruding portion provided on an outer peripheral surface of the fuse tube. The engaging portion extends along the circumferential direction of the housing portion and faces the axial line side of the housing portion. That is, the size of the portion provided with the engaging portion in the radial direction of the housing portion is reduced.
By providing the engaging portion, it is possible to prevent: when the fuse tube is detached from the high-voltage breaker, the fuse tube is separated from the housing portion (operating rod). Specifically, when the fuse tube is detached from the high-voltage breaker, the housing portion is inserted into the end portion of the fuse tube so that the protruding portion of the fuse tube can pass through a portion of the housing portion where the engaging portion is not provided. In addition, even if the protruding portion comes into contact with the engaging portion when the housing portion is inserted into the end portion of the fuse tube, the protruding portion can pass through a portion where the engaging portion is not provided when the operation rod is rotated. Then, the operation rod is rotated in the axial direction so that the protruding portion and the engaging portion face each other. As a result, the protruding portion engages with the engaging portion when the fuse tube is pulled out, and it is possible to prevent: the fuse tube is separated from the housing (operating rod). The engaging portion may extend in the circumferential direction of the housing portion and partially extend in the axial direction of the housing portion. For example, the engaging portion may have an L-shape in which one end in the circumferential direction extends in the axial direction. In this case, when the operation rod is rotated, the projection of the fuse tube comes into contact with the portion of the engagement portion extending in the axial direction, and the rotation of the operation rod is restricted. That is, the axially extending portion of the engaging portion functions as a stopper of the protruding portion. The rotation of the protruding portion is restricted by the stopper portion, and the protruding portion and the engaging portion can be reliably opposed to each other in the axial direction. In addition, only 1 engaging portion may be provided on the inner peripheral surface of the housing portion, or a plurality of engaging portions may be provided.
The support member includes: the operation rod comprises an installation part installed on the operation rod main body and a plurality of columnar parts extending from the installation part along the axial direction. The mounting portion may be a ring shape that is wound around the outer circumference of the operation rod main body. Further, at an end portion (tip end side) of the operation rod main body, there are formed: the small diameter portion having an outer diameter smaller than that of the other portion can be used to attach the support member to the small diameter portion. Accordingly, the movement of the support member in the axial direction can be restricted. Further, the outer diameter of the support member and the outer diameter of the operation rod main body can be made substantially the same size. In addition, in the case where the housing portion is formed by the operation rod main body and the cylindrical tubular member, the mounting portion may be sandwiched between the tubular member and the operation rod main body. That is, the support member is attached to the outer periphery of the operation rod main body in the axial direction by the attachment portion being disposed between the cylindrical member and the operation rod main body.
The columnar portion extends along the axis of the housing portion radially outward of the housing portion. The columnar portion extends to a position protruding from an end surface (front end surface) of the housing portion, and the front end (position protruding from the end surface of the housing portion) is formed with: a hook part protruding toward the axis of the receiving part. The hook portion engages with a flange portion provided on an outer peripheral surface of the fuse tube when the fuse tube is attached to the high-voltage disconnector. The hook portion also engages with a flange portion of the fuse tube when the fuse tube is detached from the high-voltage breaker.
When the fuse tube is attached to the high-voltage breaker, the end portion of the fuse tube is received in the receiving portion, and the hook portion supports the flange portion of the fuse tube, whereby the fuse tube is fixed to the operating rod (receiving portion). When the fuse tube is attached to the high-voltage breaker, the projecting portion of the fuse tube is not engaged with the engaging portion of the housing portion, unlike when the fuse tube is detached from the high-voltage breaker. More specifically, the end portion of the fuse tube is housed in the housing portion without engaging the protruding portion with the engaging portion, and after the fuse tube is attached to the high-voltage breaker, the operating rod and the fuse tube are fixed so as to be easily separated from each other. As a result, when the operation rod is pulled out (separated from the high-voltage breaker) after the fuse tube is attached to the high-voltage breaker, the engagement between the hook portion and the flange portion is disengaged, and the operation rod can be pulled out in a state where the fuse tube is attached to a predetermined position in the high-voltage breaker.
The hook portion may be inclined from the root portion (the surface of the columnar portion on which the hook portion is not provided) toward the top portion in the axial direction of the housing portion. Accordingly, the fuse tube can be easily attached to and detached from the operating rod when the fuse tube is attached to and detached from the operating rod. The columnar portion may be elastically deformed when the fuse tube is attached and detached. This makes it possible to further facilitate attachment and detachment of the fuse tube to and from the operating rod. The columnar portions may be arranged at equal intervals around the axis of the housing portion. Further, the length (width) of each columnar portion in the circumferential direction may be longer than the length (thickness) in the radial direction. Accordingly, each columnar portion is easily elastically deformed when the fuse tube is attached and detached.
[ examples ] A method for producing a compound
(high pressure cutter)
Referring to fig. 1, a high-pressure breaker 100 will be described. The high-voltage disconnector 100 is installed on a distribution line and used for protecting equipment such as a transformer. The high-pressure breaker 100 includes: a porcelain body insulator 8, a 1 st electrode 56 connected to the power distribution line side, an arc extinguishing rod 54 disposed inside the 1 st electrode 56, a 2 nd electrode 46 connected to the device side, and a fuse tube 12 connecting the 1 st electrode 56 and the 2 nd electrode 46. The main insulator 8 is cylindrical, and has a plurality of insulating sheds 14 on the outer circumferential surface. Inside the main body insulator 8, there are formed: a cylindrical 1 st chamber 4, and a cylindrical 2 nd chamber 20 having a larger diameter than the 1 st chamber 4. A cylindrical arc-extinguishing cylinder 6 is disposed in the 1 st chamber 4. The fuse cylinder 12 is disposed inside the arc extinguishing cylinder 6. The high-pressure breaker 100 is constituted by: the 1 st chamber 4 is an upper side and the 2 nd chamber 20 is a lower side in the gravity direction. The 1 st electrode 56 is disposed in the 1 st chamber 4, and the 2 nd electrode 46 is disposed in the 2 nd chamber 20. Hereinafter, the 1 st electrode 56 side may be referred to as "upper" or "upper" and the 2 nd electrode 46 side may be referred to as "lower" or "lower" in the extending direction of the fuse tube 12 (i.e., the direction of gravity).
A conical upper shell 2 is fixed to the upper portion of the main body insulator 8 by an adhesive. And the outgoing line of the upper die cone 2 is connected with the distribution line. A conical lower shell 28 is fixed to the lower side wall 24 of the main body insulator 8 by an adhesive. The lead-out wire of the lower die cone 28 is connected with equipment such as a transformer.
The fuse tube 12 extends from the 1 st chamber 4 through the 2 nd chamber 20, and can connect the 1 st electrode 56 and the 2 nd electrode 46. The fuse tube 12 includes: an insulating cylinder 50 for housing the fuse 10, an upper contact 52 provided on an upper portion of the insulating cylinder 50, a lower contact 48 provided on a lower portion of the insulating cylinder 50, and a display cylinder 58 provided below the lower contact 48. The upper contact 52 is connected to the 1 st electrode 56 and the lower contact 48 is connected to the 2 nd electrode 46. A buffer member 18 is disposed between the lower contactor 48 and the upper surface of the 2 nd chamber. At a position lower than the lower contact 48, and on the side surface of the fuse tube 12, there are provided: flange 26 and projection 42. The flange portion 26 almost surrounds the fuse tube 12 once, and the projecting portions 42 are provided at angular intervals of 180 degrees in the circumferential direction by 2. In addition, the display tube 58 is fixed to the insulating tube 50. On the other hand, the lower contact 48 is vertically displaceable with respect to the insulating tube 50 and the display tube 58. The display canister 58 forms the lower end of the fuse canister 12.
The fuse 10 includes: a fuse element 16 disposed in the insulating cylinder 50, and a fuse wire 40 connected to the fuse element 16. The fuse wire 40 is turned back upward from the lower end of the display cylinder 58 outside the display cylinder 58, and is screwed and fixed to a screw 60 attached to the lower contact 48. The spring 44 is disposed in a compressed state between the lower contact 48 and the display cylinder 58. Thereby, a tensile force is applied to the fuse wire 40. In other words, the spring 44 is compressed by tightening the fuse wire 40 to the tightening screw 60.
An opening 38 is provided below the main insulator 8 (lower end of the 2 nd chamber 20). The opening 38 is closed by the lid member 34. The cover member 34 is adhered to the inner wall 30 of the 2 nd chamber 20 by an adhesive 36. The lid member 34 is a bottomed cylindrical shape, and includes: a shaft portion 34a, a flange portion 34b provided on the outer peripheral surface of the shaft portion 34a, and an opening/closing portion (bottom portion) 32 provided on the inner peripheral surface of the shaft portion 34 a. The flange portion 34b is provided at a vertically intermediate portion of the shaft portion 34a, protrudes radially outward, and surrounds the outer periphery of the shaft portion 34a by one turn. The opening/closing portion 32 is provided at a position lower than the flange portion 34b and higher than the lower end of the shaft portion 34 a. Thus, the lower end of the shaft portion 34a constitutes: a projection 34c projecting downward from the opening/closing portion 32. The opening/closing portion 32 is protected by the projection 34 c. The lid member 34 (including the opening/closing portion 32) is formed of an elastic material such as flame-retardant rubber or soft synthetic resin. Further, a crush piece (not shown) such as an insulator is attached to the inner wall 30, and a minute protrusion is formed. The cover member 34 can be firmly fastened to the inner wall 30 by forming minute protrusions on the inner wall 30.
The opening/closing portion 32 is provided with radial notches 32 a. This allows the fuse tube 12 and the like to easily pass through the opening/closing portion 32. That is, when the fuse tube 12 or the like passes through the opening/closing portion 32, the opening/closing portion 32 is deformed to open the opening/closing portion 32, and the opening/closing portion 32 is closed by returning to its original shape after the fuse tube 12 or the like passes through. As described above, since the opening/closing portion 32 (the lid member 34) is formed of an elastic material, the opening/closing can be easily deformed (elastically deformed) by providing the notch 32 a.
The cover member 34 is attached to the opening 38 of the 2 nd chamber 20 in a state where the adhesive 36 is applied to the inner wall 30. When the lid member 34 is attached, the shaft portion 34a is inserted into the 2 nd chamber 20 until the upper surface of the flange portion 34b comes into contact with the opening portion 38. Thereby, the lid member 34 is positioned with respect to the main insulator 8. When the cap member 34 is inserted into the 2 nd chamber 20, the gap between the outer peripheral surface of the shaft portion 34a and the inner wall 30 is filled with the adhesive 36, and the cap member 34 is fastened to the body insulator 8. The opening 38 is closed by fastening the lid member 34 to the main insulator 8.
In the high-voltage breaker 100, if a current exceeding a predetermined value flows through a power distribution path in which the high-voltage breaker 100 is disposed, the fuse element 16 is immediately dissolved. As a result, the spring 44 is stretched, and the fuse tube 12 (other than the lower contact 48) moves downward while the lower contact 48 is connected to the 2 nd electrode 46. When the fuse tube 12 moves downward, the indicating tube 58 is exposed from the lid member 34 (the opening/closing portion 32) to the lower portion of the high-voltage breaker 100. That is, whether or not the fuse element 16 is broken (whether or not the fuse tube 12 needs to be replaced) can be determined by checking whether or not the display tube 58 is exposed to the lower portion of the high-voltage breaker 100. Even if the fuse element 16 is melted, the lower contact 48 is continuously connected (fixed) to the 2 nd electrode 46. Therefore, the fuse tube 12 (the display tube 58) is moved downward by the elastic force of the spring 44 and the gravity, but can be prevented from falling from the high-voltage breaker 100.
When the fuse element 16 is melted (the display cylinder 58 is exposed from the main insulator 8), the fuse cylinder 12 is pulled out from the main insulator 8 in order to replace the fuse cylinder 12. When the distribution line on which the high-voltage breaker 100 is disposed is broken (load-broken) by a construction work or the like, the operation rod 70 is inserted into the inside of the lid member 34 (inside the main insulator 8) from the bottom surface (opening/closing portion 32) of the lid member 34, and the fuse tube 12 is pulled out from the main insulator 8. In this case, when the fuse tube 12 is pulled out, an arc is generated between the upper contact 52 and the 1 st electrode 56. However, the upper arc-extinguishing rod 54 and a part of the arc-extinguishing cylinder 6 are dissolved by the arc heat to generate an arc-extinguishing gas, and the arc is extinguished by the arc-extinguishing gas. When the fuse tube 12 is inserted into the body insulator 8, the fuse tube 12 is inserted from the bottom surface of the lid member 34 toward the inside of the lid member 34. The operator uses the operating rod 70 when inserting the fuse tube 12 into the main insulator 8 and removing the fuse tube 12 from the main insulator 8 (when attaching and detaching the fuse tube 12 to and from the high-voltage breaker 100). The operation rod 70 will be explained below.
(operating rod)
The operation rod 70 will be described with reference to fig. 2 to 4. As shown in fig. 2, the operating rod 70 is rod-shaped and extends in the direction of the axis 72. The operation rod 70 includes: the operation rod main body 78, a housing portion 90 provided at one end of the operation rod main body 78 in the direction of the axis 72, and a grip portion 76 provided at the other end of the operation rod main body 78 in the direction of the axis 72. The housing portion 90 has a cylindrical shape and can house an end portion (the display cylinder 58 side) of the fuse cylinder 12 (see also fig. 3). A screw portion 74 is provided on the inner surface of the grip portion 76, and a rod-shaped extension member (not shown) can be attached thereto. That is, the length of the operation rod 70 can be adjusted as necessary.
The housing portion 90 includes: a recess 92 provided at an end of the operation rod body 78, and a tubular member 84 fixed to the operation rod body 78. The support member 82 is attached to the operation rod main body 78 so as to surround the tubular member 84. Further, the operation rod main body 78 is formed with, in order from the end surface: a threaded portion 83 and a small diameter portion 80. A cylindrical member 84 is fixed to the screw portion 83. The outer diameter of the small diameter portion 80 is smaller than the outer diameter of the intermediate portion of the operation rod main body 78 (the operation rod main body 78 other than the small diameter portion 80). Thus, a step is formed at the boundary of the intermediate portion between the small diameter portion 80 and the operation rod main body 78. The small diameter portion 80 is provided with: and a mounting portion 82a of the support member 82. The mounting portion 82a is not fixed to the small diameter portion 80. As described above, the step is formed in the intermediate portion between the small diameter portion 80 and the operation rod main body 78, and the attachment portion 82a (support member 82) is disposed between the step and the tubular member 84, whereby the attachment portion 82a (support member 82) is attached to the operation rod main body 78 in a state in which movement along the axis 72 direction is restricted. Accordingly, the mounting portion 82a (the support member 82) can rotate relative to the small diameter portion 80 (the operation rod main body 78) (is loosely fitted to the small diameter portion 80).
Therefore, the tubular member 84 will be described with reference to fig. 4. In fig. 4, the support member 82 is not shown in order to clearly show the features of the inside of the tubular member 84. Inside the tubular member 84 are provided: a ring having an engaging portion 86 and a non-engaging portion 85. The engaging portion 86 protrudes toward the axis 72 with respect to the non-engaging portion 85. In the tubular member 84, 2 engaging portions 86 are provided: symmetrically positioned with respect to axis 72. The engaging portion 86 projects toward the axis 72 with respect to the non-engaging portion 85. Therefore, the inner diameter of the engaging portion 86 is smaller than the inner diameter of the non-engaging portion 85. When the engaging portion 86 is viewed from the radial center of the tubular member 84, the engaging portion 86 has an L-shape (see fig. 2). Specifically, as shown in fig. 2, in the circumferential direction of the tubular member 84, at one end of the engaging portion 86, there are formed: a stop 87 extending along the axis 72.
As shown in fig. 2, the support member 82 includes: a mounting portion 82a, and a columnar portion 82b extending from the mounting portion 82a along the axis 72 toward the tip of the operating rod 70. The columnar portion 82b extends from the mounting portion 82a toward an end (front end) of the tubular member 84 to a position protruding from the end of the tubular member 84. In the operation rod 70, 12 columnar portions 82b are provided at equal intervals along the circumferential direction of the attachment portion 82a so as to surround the tubular member 84. At the tip of each columnar portion 82b, there are formed: a hook portion 88 projecting toward the inside (the axis 72 side). The hook portion 88 is inclined in the axis 72 direction from the root portion (the portion of the hook portion 88 farthest from the axis 72) toward the tip portion (the portion of the hook portion 88 closest to the axis 72). In addition, the thickness (radial length) of the columnar portion 82b is smaller than the width (circumferential length) of the columnar portion 82 b. Therefore, the columnar portion 82b is easily deformed in the radial direction but is not easily deformed in the circumferential direction.
As shown in fig. 3, when the fuse tube 12 is attached to the operating rod 70, the display tube 58 side of the fuse tube 12 is inserted into the tubular member 84. At this time, the flange portion 26 of the fuse tube 12 contacts the hook portion 88 of the support member 82, and the columnar portion 82b elastically deforms radially outward. When the flange portion 26 passes over the top of the hook portion 88, the columnar portion 82b returns to the position before elastic deformation, and the hook portion 88 engages with the flange portion 26. As described above, the hook portion 88 is inclined from the root portion toward the tip portion in the axis 72 direction. Therefore, when the fuse tube 12 is attached to the operating rod 70, the flange portion 26 contacts the hook portion 88, and at this time, a force (compressive force) applied to the columnar portion 82b in the direction of the axis 72 is reduced. Similarly, when the fuse tube 12 is detached from the operating rod 70, the force (tensile force) applied to the columnar portion 82b in the direction of the axis 72 is also reduced. This can suppress breakage of the columnar portion 82 b.
(method of attaching and detaching fuse tube and operating rod)
A method of attaching and detaching the fuse tube 12 and the operation rod 70 will be described with reference to fig. 5. When attaching the fuse tube 12 to the high-voltage breaker 100, the worker first attaches the fuse tube 12 to the operating rod 70. The operator rotates the operation rod 70 in the 1 st direction 91 while pushing the end of the fuse tube 12 into the housing portion 90 (the tubular member 84). The projecting portion 42 of the fuse tube 12 contacts the upper surface of the engaging portion 86, and reaches the non-engaging portion 85 through the upper surface of the engaging portion 86. When the protruding portion 42 reaches the non-engagement portion 85, the protruding portion 42 (fuse tube 12) descends to: the flange portion 26 contacts the upper surface of the cylindrical member 84. Then, the projecting portion 42 moves in the direction of the arrow 94 on the non-engagement portion 85. When the protrusion 42 contacts the stopper 87, the operation rod 70 cannot be rotated any more. As described above, when the end portion (the display tube 58 side) of the fuse tube 12 is inserted into the housing portion 90, the hook portion 88 engages with the flange portion 26. As is apparent from fig. 5, when the operation rod 70 is rotated in the 1 st direction 91, the protrusion 42 and the engagement portion 86 are not engaged with each other. When the fuse tube 12 is attached to the high-voltage breaker 100, the fuse tube 12 and the operating rod 70 are fixed only by engagement of the hook portion 88 and the flange portion 26, instead of engagement of the projection portion 42 and the engagement portion 86.
As described above, the support member 82 is attached to the operation rod main body 78 in a rotatable state with respect to the operation rod main body 78 (the cylindrical member 84). Therefore, when the fuse tube 12 is attached to the operating rod 70, when the operating rod 70 is rotated, the tubular member 84 rotates relative to the fuse tube 12, but the support member 82 does not rotate. Therefore, it is possible to prevent: an object (fuse wire 40 or the like) disposed outside the fuse tube 12 is damaged.
After the fuse tube 12 is attached to the operating rod 70, the fuse tube 12 is inserted into the body insulator 8, the upper contact 52 is connected to the 1 st electrode 56, the lower contact 48 is connected to the 2 nd electrode 46, and the operating rod 70 is pulled out downward (see also fig. 1). When the operating rod 70 is pulled out, the support member 82 elastically deforms so that the flange portion 26 and the hook portion 88 are disengaged, and the fuse tube 12 can be separated from the operating rod 70 while the fuse tube 12 remains in the body insulator 8. That is, after the fuse cartridge 12 is mounted to the operation rod 70, it is possible to eliminate: the fuse tube 12 can be separated from the operating rod 70 by simply pulling out the operating rod 70 by such operations as rotating the operating rod 70 or pushing the operating rod 70.
When the fuse tube 12 is pulled out from the high-voltage breaker 100, the operator presses the housing portion 90 (the tubular member 84) against the end of the fuse tube 12 and also rotates the operating rod 70 in the 2 nd direction 93. The projecting portion 42 of the fuse tube 12 contacts the upper surface of the engaging portion 86 of the tubular member 84, and passes through the upper surface of the engaging portion 86 to reach the non-engaging portion 85. When the protruding portion 42 reaches the non-engagement portion 85, the protruding portion 42 (fuse tube 12) descends to: the flange portion 26 contacts the upper surface of the cylindrical member 84. Then, the projecting portion 42 moves in the direction of the arrow 96 on the non-engagement portion 85 (see fig. 5). When the protrusion 42 contacts the stopper 87, the operation rod 70 cannot be rotated any more. As is clear from fig. 5, when the protrusion 42 comes into contact with the stopper 87, the protrusion 42 and the engagement portion 86 are reliably engaged with each other. Further, the hook portion 88 is also engaged with the flange portion 26 by pressing the housing portion 90 against the end portion of the fuse tube 12. After the projection 42 is engaged with the engagement portion 86, the operation rod 70 is further moved downward, and the fuse tube 12 is pulled out from the high-voltage breaker 100. Further, since the protruding portion 42 is engaged with the engaging portion 86, even if the fuse tube 12 is firmly connected to the body insulator 8 (even if the upper contact 52 and the lower contact 48 are firmly connected to the 1 st electrode 56 and the lower contact 48), the fuse tube 12 can be reliably pulled out from the body insulator 8.
After the protrusion 42 is engaged with the engagement portion 86, the positions of the fuse tube 12 and the operation rod 70 in the direction of the axis 72 do not change unless the operation rod 70 is rotated in the 1 st direction 91 and disengaged from each other. Therefore, even if the operating rod 70 is moved in the vertical direction when the operating rod 70 is strongly pressed against the fuse tube 12 or the fuse tube 12 is pulled out from the body insulator 8, the fuse tube 12 does not come off from the operating rod 70. Therefore, when the fuse tube 12 is pulled out of the high-voltage breaker 100, it is not necessary to repeat: the operation of fixing the fuse tube 12 and the operation rod 70. When the fuse tube 12 is pulled out of the high-voltage breaker 100, the operation rod 70 is rotated in the 1 st direction 91, and the fuse tube 12 and the operation rod 70 can be separated from each other.
In the above embodiment, the description has been given of the mode in which the hook portion provided in the support member is inclined in a tapered shape from the root portion toward the top portion in the axial direction. However, the hook portion may be inclined in a curved shape (for example, an arc shape) from the root portion toward the apex portion in the axial direction. Alternatively, the thickness of the hook portion may be changed stepwise from the root portion toward the tip portion.
The housing portion for housing the fuse tube may be formed directly at the end of the operation rod main body without using a cylindrical member separate from the operation rod main body. Alternatively, the housing portion may be formed of only a cylindrical member fixed to an end portion of the operation rod main body, instead of the operation rod main body. The support member may be attached to the operation rod main body so as to be rotatable with respect to the operation rod main body, and may not be disposed between the operation rod main body and the tubular member.
Specific examples of the present invention have been described in detail, but these are merely illustrative and do not limit the scope of the claims. The technique recited in the claims further includes: various modifications and changes have been made to the specific examples shown in the above examples. The technical elements described in the specification or drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Further, the techniques illustrated in the present specification or the drawings can achieve a plurality of objects at the same time, and achieving one of the objects itself is technically practical.
Claims (3)
1. An operating rod is used for disassembling and assembling a fuse tube used by a high-voltage disconnector,
the operation rod is provided with:
an operating rod main body provided with a cylindrical housing section at a front end thereof, the cylindrical housing section being capable of housing an end portion of a fuse tube;
a support member having a plurality of columnar portions extending from a mounting portion to positions protruding from end surfaces of the housing portion along an axis of the housing portion, the mounting portion being mounted on an outer periphery of the operation rod main body so as to be rotatable with respect to the operation rod main body, and supporting side portions of the fuse tube by the columnar portions,
the inner peripheral surface of the housing portion is provided with: an engaging portion extending along a circumferential direction of the housing portion and protruding toward an axial side of the housing portion, the engaging portion being engaged with a protruding portion provided on an outer circumferential surface of the fuse cylinder when the fuse cylinder is detached from the high-voltage disconnector, thereby preventing the fuse cylinder from being separated from the operating rod main body,
the front end of the columnar part is provided with: a hook portion protruding toward the axial line side of the housing portion is engaged with a flange portion provided on the outer peripheral surface of the fuse tube when the fuse tube is attached to and detached from the high-voltage disconnector.
2. The joystick according to claim 1,
the hook portion is inclined from the root portion toward the tip portion in the axial direction,
the columnar portion is configured to: the fuse tube is elastically deformed when the fuse tube is attached to and detached from the operating rod.
3. An operating rod according to claim 1 or 2,
the receiving section is formed by a recess provided at the tip of the operation rod main body and a tubular member fixed to the tip of the operation rod main body,
the support member is attached to the operation rod main body by the attachment portion being disposed between the cylindrical member and the operation rod main body in the axial direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-188904 | 2019-10-15 | ||
| JP2019188904A JP7128790B2 (en) | 2019-10-15 | 2019-10-15 | operating rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112670138A true CN112670138A (en) | 2021-04-16 |
| CN112670138B CN112670138B (en) | 2024-08-23 |
Family
ID=75402722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010106352.0A Active CN112670138B (en) | 2019-10-15 | 2020-02-21 | Operating rod |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7128790B2 (en) |
| CN (1) | CN112670138B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496663A (en) * | 2021-09-30 | 2022-05-13 | 爱那其斯株式会社 | Operating rod |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53100539U (en) * | 1977-01-19 | 1978-08-14 | ||
| US4132441A (en) * | 1977-10-17 | 1979-01-02 | Watkins Murrell W | Head for removing fuse holder |
| JPH0553105U (en) * | 1991-12-19 | 1993-07-13 | エナジーサポート株式会社 | Control rod |
| CN201233856Y (en) * | 2008-05-08 | 2009-05-06 | 日本能源服务株式会社 | Operating rod for high voltage fuse |
| JP2011049035A (en) * | 2009-08-27 | 2011-03-10 | Chugoku Electric Power Co Inc:The | Tube-form holder |
| WO2017125997A1 (en) * | 2016-01-18 | 2017-07-27 | 日本高圧電気株式会社 | Operation rod |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6010262Y2 (en) * | 1980-07-18 | 1985-04-09 | 株式会社高松電気製作所 | Operation rod for short circuit detection in cylindrical cutout |
-
2019
- 2019-10-15 JP JP2019188904A patent/JP7128790B2/en active Active
-
2020
- 2020-02-21 CN CN202010106352.0A patent/CN112670138B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53100539U (en) * | 1977-01-19 | 1978-08-14 | ||
| US4132441A (en) * | 1977-10-17 | 1979-01-02 | Watkins Murrell W | Head for removing fuse holder |
| JPH0553105U (en) * | 1991-12-19 | 1993-07-13 | エナジーサポート株式会社 | Control rod |
| CN201233856Y (en) * | 2008-05-08 | 2009-05-06 | 日本能源服务株式会社 | Operating rod for high voltage fuse |
| JP2011049035A (en) * | 2009-08-27 | 2011-03-10 | Chugoku Electric Power Co Inc:The | Tube-form holder |
| WO2017125997A1 (en) * | 2016-01-18 | 2017-07-27 | 日本高圧電気株式会社 | Operation rod |
Non-Patent Citations (1)
| Title |
|---|
| 赵志修等: "带电拆除引流线线夹专用工具的设计与应用", 《浙江电力》, vol. 35, no. 4, 31 December 2016 (2016-12-31), pages 22 - 24 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496663A (en) * | 2021-09-30 | 2022-05-13 | 爱那其斯株式会社 | Operating rod |
| CN114496663B (en) * | 2021-09-30 | 2022-10-14 | 爱那其斯株式会社 | Operating rod |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021064536A (en) | 2021-04-22 |
| JP7128790B2 (en) | 2022-08-31 |
| CN112670138B (en) | 2024-08-23 |
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