CN111884123A - Load replacement protection device for drop-out fuse and live replacement method thereof - Google Patents
Load replacement protection device for drop-out fuse and live replacement method thereof Download PDFInfo
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- CN111884123A CN111884123A CN202010654607.7A CN202010654607A CN111884123A CN 111884123 A CN111884123 A CN 111884123A CN 202010654607 A CN202010654607 A CN 202010654607A CN 111884123 A CN111884123 A CN 111884123A
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- rod
- drop
- transverse
- out fuse
- longitudinal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
The invention belongs to the field of hot-line work devices, relates to an auxiliary device for replacing a drop-out fuse, in particular to a load replacement protection device for the drop-out fuse, which comprises a connecting block, wherein the connecting block is in a cubic shape, through holes are respectively arranged in the inner part of the insulating sleeve along the longitudinal direction and the transverse direction, an insulating sleeve is arranged in each through hole in a penetrating way, the two insulating sleeves are mutually vertical and distributed in a cross structure, wherein, the transverse rod is arranged along the transverse direction, the longitudinal rod is arranged along the longitudinal direction, the transverse rod and the longitudinal rod can be driven to slide relatively under the action of the connecting block, a clamping block is arranged at one side end part of the transverse rod, the clamping block is used for clamping with a cross arm for installing the drop-out fuse, a flexible cable is arranged in the longitudinal rod in a penetrating way, two ends of the flexible cable extend out from two ends of the longitudinal rod respectively, and the two ends are used for being connected and conducted with an upper lead and a lower lead of the drop-out fuse respectively.
Description
Technical Field
The invention belongs to the field of hot-line work devices, relates to an auxiliary device for replacing a drop-out fuse, and particularly relates to an on-load replacement protection device for the drop-out fuse and an on-line replacement method thereof.
Background
With the continuous acceleration of the urbanization process, the maintenance method of 'one-line-one-stop-one-large-piece' of a power grid enterprise cannot meet the power utilization requirement of the society, and in order to create a good operator environment and fully improve the power supply reliability, the uninterrupted operation becomes a legal treasure for maintaining the power supply reliability under the condition, so that the 'live working' becomes the most direct method for reducing the power failure of users and the most effective measure for improving the power supply reliability. The fall-out fuse is required to be replaced in a live mode when the fall-out fuse breaks down frequently in a power distribution system, the safety distance of a working site is very small when the fall-out fuse is replaced in a live mode, the fuse of the fall-out fuse falls off and falls off on the ground in the replacement process, the arc discharge phenomenon occurs, the great potential safety hazard is brought to live operators in a bucket, the great danger is brought to the live working of ground electricians, and personal accidents are easy to occur. The drop-out fuse is replaced under the load in the traditional mode, a bypass connection main line is required to be connected with a lower lead of the drop-out fuse, the traditional bypass drainage wire cannot be suitable for various working sites, the phase-to-phase distance of the drop-out fuse is small, the traditional bypass drainage wire is free of a fixing device, the traditional bypass drainage wire is easy to swing, any protection measure is omitted, and accidents are easy to happen. Therefore, a protector for replacing the drop-out fuse under load should be developed, so as to control the potential safety hazard under the situation of zero danger.
Disclosure of Invention
The invention provides a load replacement protection device for a drop-out fuse, which has a reasonable structure, is convenient to fix and works in a hot-line manner.
The utility model provides a drop out fuse is with changing protection device with load which characterized in that: the connecting block is in a cube shape, through holes are respectively formed in the connecting block along the longitudinal direction and the transverse direction, an insulating sleeve penetrates through each through hole, the two insulating sleeves are mutually perpendicular and are distributed in a cross structure, a transverse rod is arranged along the transverse direction, a longitudinal rod is arranged along the longitudinal direction, the transverse rod and the longitudinal rod can be driven to slide relative to each other under the action of the connecting block, a clamping block is installed at one side end of the transverse rod and used for clamping a cross arm for installing a drop-out fuse, a flexible cable penetrates through the longitudinal rod, two ends of the flexible cable respectively extend out of two ends of the longitudinal rod, and the two ends of the flexible cable are respectively used for being connected and conducted with an upper lead and a lower lead of the drop-out fuse.
Furthermore, the cross rod is hollow, an inner rod is integrally installed at the end part of the clamping block and penetrates into the cross rod, an internal thread is formed in the inner rod, a screw is installed at the end part, far away from the clamping block, of the inner rod in a matched mode, a driving mechanism is installed at the rear end part of the screw and can drive the screw to rotate in the circumferential direction, and the inner rod can reciprocate in the axial direction through the matching of the internal thread formed in the inner rod and the screw.
Furthermore, a limiting head is installed at the end part of the cross rod, transverse grooves are symmetrically formed in the left side and the right side of the limiting head, the clamping block is L-shaped, the transverse part of the clamping block is located in the transverse groove, a bending part is formed at the end part of the longitudinal part of the clamping block, the bending part is parallel to the transverse part of the clamping block, a bolt penetrates through the bending part, and the bolt extends towards the transverse part and can be locked and fixed through a nut.
Furthermore, the outside cover of vertical pole is equipped with a movable block, and this movable block can reciprocate along the vertical pole periphery, along wearing to be equipped with a gag lever post with vertical pole vertical direction in the movable block, wear out in the movable block both ends all had the movable block.
Furthermore, in the opposite end surfaces of the connecting block, which are not provided with the through holes, an insulating plate is integrally installed on one end surface, and a handle is integrally installed on the other end surface along the direction perpendicular to the connecting block.
An electrified replacing method for a loaded replacing protection device for a drop-out fuse is applied, and is characterized in that: the method comprises the following steps:
step 1: manually supporting and replacing the protection device, so that a transverse part of a clamping head in the protection device is placed on the upper end face of the cross arm and extends outwards along the width direction, and a longitudinal part of the clamping head is positioned on the inner side of the cross arm and is vertical to the cross arm;
step 2: adjusting a bolt of the chuck to tightly press and connect the bolt with the lower end face of the cross arm and then fixing the bolt with a locking nut;
and step 3: starting a driving device to enable the transverse rod and the longitudinal rod to synchronously move towards one side of the clamping head until the cross arm is clamped and fixed;
and 4, step 4: the movable connecting block is moved to adjust the position between the transverse rod and the longitudinal rod, and the movable block is adjusted to enable the brake roller outside the limiting rod drop-out fuse to be pressed and connected;
and 5: respectively connecting and conducting two connectors of the flexible cable with an upper lead and a lower lead of the drop-out fuse;
step 6: disassembling and replacing the drop-out fuse;
and 7: after the replacement is finished, disconnecting the two connectors of the flexible cable from the upper lead and the lower lead of the drop-out fuse;
and 8: and (4) reversely operating according to the step 4-1, and taking down the replacement protection device.
The invention has the advantages and positive effects that:
according to the invention, the longitudinal rod and the transverse rod are respectively fixed by the connecting blocks, the longitudinal rod and the transverse rod can relatively move through the connecting blocks, the fixture block arranged at one end of the transverse rod is used for fixing with the cross arm for installing the drop-out fuse, the transverse rod can move up and down relative to the longitudinal rod, and the longitudinal rod can move left and right relative to the transverse rod, so that the positions of the longitudinal rod, the transverse rod and the drop-out fuse are adjusted, the adaptability of the drop-out fuse is improved, and the drop-out fuse can be suitable for different single cross arms, double cross arms and; the flexible cables which are conducted are arranged in the longitudinal rod and are respectively used for connecting the upper lead and the lower lead of the drop-out fuse, so that the peripheral circuit of the drop-out fuse can still be conducted in the replacement process of the drop-out fuse, and live working is realized.
According to the invention, the inner rod penetrating into the cross rod is matched with the driving device to realize the movement of the fixture block, the screw rod can rotate relative to the inner rod and is driven by the driving device to be matched with the internal thread made by the inner rod to realize the feeding and retraction of the end part of the inner rod, namely the fixture block part, so that the fixture block is locked and fixed with the cross rod.
In the invention, the moving block can move up and down along the longitudinal rod, and the limiting rod which is transversely penetrated and arranged can be fixedly connected with the brake rod of the drop-out fuse in a pressing mode.
In the invention, as the three-phase drop-out fuses are arranged on one cross arm at intervals, the distance between every two adjacent drop-out fuses is small, and the operation space is limited, the adjacent phases are isolated by the insulating plate, the mistaken touch in the replacement process of an operator is prevented, and the handle is convenient for the operator to hold and operate.
In the invention, aiming at a new replacement protection device, a corresponding replacement method is matched. At the beginning of installation, the chuck is matched through a bolt and a nut, the longitudinal position of the chuck relative to the cross arm is fixed, and then the transverse position of the protection device relative to the cross arm is changed and fixed by integrally moving the connecting block through the driving device. After the brake roller is firmly fixed, the position of the movable block is adjusted to enable the limiting rod to be tightly pressed with the brake roller, and the insulating plate integrally installed with the connecting block isolates the working position from other sides, so that the safety of the operation process can be improved. Then, two connectors of the flexible cable are respectively conducted with an upper lead and a lower lead of the drop-out fuse, so that the drop-out fuse can be ensured to be in a circuit conducting live state in the process of replacing the drop-out fuse.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a partial schematic view of the inner rod;
FIG. 4 is a schematic structural view of a fixture block and a cross arm in a fixed state;
fig. 5 is a schematic structural diagram of the connecting block moving to the working position.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The invention relates to a load replacement protection device for a drop-out fuse, which is characterized by comprising a connecting block 7, wherein the connecting block is in a cubic shape, through holes are respectively formed in the connecting block along the longitudinal direction and the transverse direction, an insulating sleeve penetrates through each through hole, the two insulating sleeves are mutually perpendicular and distributed in a cross structure, a transverse rod 3 is arranged along the transverse direction, a longitudinal rod 6 is arranged along the longitudinal direction, the transverse rod and the longitudinal rod can be driven to slide relatively under the action of the connecting block, a clamping block 1 is arranged at one side end part of the transverse rod and used for clamping a cross arm for mounting the drop-out fuse, a flexible cable 11 penetrates through the longitudinal rod, two ends of the flexible cable respectively extend out of two ends of the longitudinal rod, and the two ends are respectively used for being connected and conducted with an upper lead and a lower lead of the drop-out fuse.
In this embodiment, a limiting head 2 is installed at the end of the cross rod, transverse grooves are symmetrically formed on the left side and the right side of the limiting head, the clamping block is L-shaped, and the transverse part 12 of the clamping block is located in the transverse groove, so that the clamping block is limited from rotating circumferentially.
In this embodiment, the inside cavity of horizontal pole, an interior pole 13 is installed to fixture block tip an organic whole, and this interior pole is worn to adorn inside the horizontal pole, interior pole cavity sets up, and this interior pole is inside to be made to have the internal thread, and its tip cooperation of keeping away from the fixture block installs screw 14, actuating mechanism 8 is installed to the rear end of screw, and this drive arrangement can adopt the motor, and the output of this motor and the coaxial drive of screw can drive screw circumferential direction, and then can drive screw rod reciprocating motion along axial direction through the internal thread that its inside was made and the screw rod cooperation.
In this embodiment, a moving block 4 is sleeved outside the longitudinal rod and can move up and down along the periphery of the longitudinal rod, a limiting rod 5 penetrates through the inner edge of the moving block in the direction perpendicular to the longitudinal rod, and the two ends of the limiting rod penetrate through the moving block.
In this embodiment, the connecting block has two opposite end faces without through holes, wherein one end face is integrally provided with an insulating plate 10, and the other end face is integrally provided with a handle 9 along a direction perpendicular to the connecting block.
The using process of the invention is as follows:
the invention comprises the following steps when in use.
Step 1: manually supporting and replacing the protection device, so that a transverse part of a clamping head in the protection device is placed on the upper end face of the cross arm and extends outwards along the width direction, and a longitudinal part of the clamping head is positioned on the inner side of the cross arm and is vertical to the cross arm;
step 2: adjusting a bolt of the chuck to tightly press and connect the bolt with the lower end face of the cross arm and then fixing the bolt with a locking nut;
and step 3: starting a driving device to enable the transverse rod and the longitudinal rod to synchronously move towards one side of the clamping head until the cross arm is clamped and fixed; (as shown in FIG. 4)
And 4, step 4: the movable connecting block is moved to adjust the position between the transverse rod and the longitudinal rod, and the movable block is adjusted to enable the brake rod on the outer side of the limiting rod drop-out fuse to be tightly pressed; (as shown in FIG. 5)
And 5: respectively connecting and conducting two connectors of the flexible cable with an upper lead and a lower lead of the drop-out fuse;
step 6: disassembling and replacing the drop-out fuse;
and 7: after the replacement is finished, disconnecting the two connectors of the flexible cable from the upper lead and the lower lead of the drop-out fuse;
and 8: and (4) reversely operating according to the step 4-1, and taking down the replacement protection device.
According to the invention, the longitudinal rod and the transverse rod are respectively fixed by the connecting blocks, the longitudinal rod and the transverse rod can relatively move through the connecting blocks, the fixture block arranged at one end of the transverse rod is used for fixing with the cross arm for installing the drop-out fuse, the transverse rod can move up and down relative to the longitudinal rod, and the longitudinal rod can move left and right relative to the transverse rod, so that the positions of the longitudinal rod, the transverse rod and the drop-out fuse are adjusted, the adaptability of the drop-out fuse is improved, and the drop-out fuse can be suitable for different single cross arms, double cross arms and; the flexible cables which are conducted are arranged in the longitudinal rod and are respectively used for connecting the upper lead and the lower lead of the drop-out fuse, so that the peripheral circuit of the drop-out fuse can still be conducted in the replacement process of the drop-out fuse, and live working is realized.
According to the invention, the inner rod penetrating into the cross rod is matched with the driving device to realize the movement of the fixture block, the screw rod can rotate relative to the inner rod and is driven by the driving device to be matched with the internal thread made by the inner rod to realize the feeding and retraction of the end part of the inner rod, namely the fixture block part, so that the fixture block is locked and fixed with the cross rod.
In the invention, the moving block can move up and down along the longitudinal rod, and the limiting rod which is transversely penetrated and arranged can be fixedly connected with the brake rod of the drop-out fuse in a pressing mode.
In the invention, as the three-phase drop-out fuses are arranged on one cross arm at intervals, the distance between every two adjacent drop-out fuses is small, and the operation space is limited, the adjacent phases are isolated by the insulating plate, the mistaken touch in the replacement process of an operator is prevented, and the handle is convenient for the operator to hold and operate.
In the invention, aiming at a new replacement protection device, a corresponding replacement method is matched. At the beginning of installation, the chuck is matched through a bolt and a nut, the longitudinal position of the chuck relative to the cross arm is fixed, and then the transverse position of the protection device relative to the cross arm is changed and fixed by integrally moving the connecting block through the driving device. After the brake roller is firmly fixed, the position of the movable block is adjusted to enable the limiting rod to be tightly pressed with the brake roller, and the insulating plate integrally installed with the connecting block isolates the working position from other sides, so that the safety of the operation process can be improved. Then, two connectors of the flexible cable are respectively conducted with an upper lead and a lower lead of the drop-out fuse, so that the drop-out fuse can be ensured to be in a circuit conducting live state in the process of replacing the drop-out fuse.
Claims (6)
1. The utility model provides a drop out fuse is with changing protection device with load which characterized in that: the connecting block is in a cube shape, through holes are respectively formed in the connecting block along the longitudinal direction and the transverse direction, an insulating sleeve penetrates through each through hole, the two insulating sleeves are mutually perpendicular and are distributed in a cross structure, a transverse rod is arranged along the transverse direction, a longitudinal rod is arranged along the longitudinal direction, the transverse rod and the longitudinal rod can be driven to slide relative to each other under the action of the connecting block, a clamping block is installed at one side end of the transverse rod and used for clamping a cross arm for installing a drop-out fuse, a flexible cable penetrates through the longitudinal rod, two ends of the flexible cable respectively extend out of two ends of the longitudinal rod, and the two ends of the flexible cable are respectively used for being connected and conducted with an upper lead and a lower lead of the drop-out fuse.
2. The replacement protection device with load for a drop out fuse as claimed in claim 1, wherein: the inner rod is arranged in a hollow mode, internal threads are formed in the inner rod, a screw rod is installed at the end portion, far away from the clamping block, of the inner rod in a matched mode, a driving mechanism is installed at the rear end portion of the screw rod and can drive the screw rod to rotate in the circumferential direction, and the inner rod can reciprocate in the axial direction through the matching of the internal threads formed in the inner rod and the screw rod.
3. The replacement protection device with load for a drop out fuse as claimed in claim 1, wherein: the end part of the cross rod is provided with a limiting head, transverse grooves are symmetrically formed in the left side and the right side of the limiting head, the clamping block is L-shaped, the transverse part of the clamping block is arranged in the transverse groove, a bending part is formed in the end part of the longitudinal part of the clamping block, the bending part is parallel to the transverse part of the clamping block, a bolt penetrates through the bending part, and the bolt extends towards the transverse part and can be locked and fixed through a nut.
4. The replacement protection device with load for a drop out fuse as claimed in claim 1, wherein: the outside cover of vertical pole is equipped with a movable block, and this movable block can reciprocate along the vertical pole periphery, along wearing to be equipped with a gag lever post with vertical pole vertical direction in the movable block, wear out in this gag lever post both ends have the movable block.
5. The replacement protection device with load for a drop out fuse as claimed in claim 1, wherein: in the opposite two end faces of the connecting block, which are not provided with the through holes, one end face is integrally provided with an insulating plate, and the other end face is integrally provided with a handle along the direction vertical to the connecting block.
6. The live replacement method of the live replacement protection device for the drop fuse according to any one of claims 1 to 5, wherein: the method comprises the following steps:
step 1: manually supporting and replacing the protection device, so that a transverse part of a clamping head in the protection device is placed on the upper end face of the cross arm and extends outwards along the width direction, and a longitudinal part of the clamping head is positioned on the inner side of the cross arm and is vertical to the cross arm;
step 2: adjusting a bolt of the chuck to tightly press and connect the bolt with the lower end face of the cross arm and then fixing the bolt with a locking nut;
and step 3: starting a driving device to enable the transverse rod and the longitudinal rod to synchronously move towards one side of the clamping head until the cross arm is clamped and fixed;
and 4, step 4: the movable connecting block is moved to adjust the position between the transverse rod and the longitudinal rod, and the movable block is adjusted to enable the brake rod on the outer side of the limiting rod drop-out fuse to be tightly pressed;
and 5: respectively connecting and conducting two connectors of the flexible cable with an upper lead and a lower lead of the drop-out fuse;
step 6: disassembling and replacing the drop-out fuse;
and 7: after the replacement is finished, disconnecting the two connectors of the flexible cable from the upper lead and the lower lead of the drop-out fuse;
and 8: and (4) reversely operating according to the step 4-1, and taking down the replacement protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654607.7A CN111884123B (en) | 2020-07-09 | 2020-07-09 | Load replacement protection device for drop-out fuse and live replacement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654607.7A CN111884123B (en) | 2020-07-09 | 2020-07-09 | Load replacement protection device for drop-out fuse and live replacement method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111884123A true CN111884123A (en) | 2020-11-03 |
| CN111884123B CN111884123B (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010654607.7A Active CN111884123B (en) | 2020-07-09 | 2020-07-09 | Load replacement protection device for drop-out fuse and live replacement method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015040541A1 (en) * | 2013-09-17 | 2015-03-26 | Mazer Technologies (Pty) Limited | Dropout fuse assembly and fuse holder |
| CN104638564A (en) * | 2015-01-23 | 2015-05-20 | 国网山西省电力公司晋城供电公司 | Insulated fixing device for use in live replacement of drop-out fuse |
| CN107546646A (en) * | 2017-09-29 | 2018-01-05 | 国网湖南省电力公司 | On-load changes the specific purpose tool and method of fuse switch |
| CN109193464A (en) * | 2018-10-31 | 2019-01-11 | 国网四川省电力公司绵阳供电公司 | On-load replaces fuse switch and bypasses drainage device |
| CN210866095U (en) * | 2019-12-25 | 2020-06-26 | 国网辽宁省电力有限公司沈阳供电公司 | Special shunting device for replacing drop-out fuse under load |
| CN212587443U (en) * | 2020-07-09 | 2021-02-23 | 国网天津市电力公司 | Load replacement protection device for drop-out fuse |
-
2020
- 2020-07-09 CN CN202010654607.7A patent/CN111884123B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015040541A1 (en) * | 2013-09-17 | 2015-03-26 | Mazer Technologies (Pty) Limited | Dropout fuse assembly and fuse holder |
| CN104638564A (en) * | 2015-01-23 | 2015-05-20 | 国网山西省电力公司晋城供电公司 | Insulated fixing device for use in live replacement of drop-out fuse |
| CN107546646A (en) * | 2017-09-29 | 2018-01-05 | 国网湖南省电力公司 | On-load changes the specific purpose tool and method of fuse switch |
| CN109193464A (en) * | 2018-10-31 | 2019-01-11 | 国网四川省电力公司绵阳供电公司 | On-load replaces fuse switch and bypasses drainage device |
| CN210866095U (en) * | 2019-12-25 | 2020-06-26 | 国网辽宁省电力有限公司沈阳供电公司 | Special shunting device for replacing drop-out fuse under load |
| CN212587443U (en) * | 2020-07-09 | 2021-02-23 | 国网天津市电力公司 | Load replacement protection device for drop-out fuse |
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| Publication number | Publication date |
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| CN111884123B (en) | 2021-09-21 |
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