CN111716275A - Overhaul power supply box protective tube replacement tool - Google Patents
Overhaul power supply box protective tube replacement tool Download PDFInfo
- Publication number
- CN111716275A CN111716275A CN202010609631.9A CN202010609631A CN111716275A CN 111716275 A CN111716275 A CN 111716275A CN 202010609631 A CN202010609631 A CN 202010609631A CN 111716275 A CN111716275 A CN 111716275A
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- China
- Prior art keywords
- jaw
- power supply
- arc
- end part
- supply box
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- 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.)
- Pending
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- 230000001681 protective effect Effects 0.000 title claims description 23
- 239000003973 paint Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/481—Spanners; Wrenches for special purposes for operating in areas having limited access
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/16—Handles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention belongs to the technical field of electrical maintenance of nuclear power stations, and particularly relates to a replacement tool for a safety tube of an overhaul power box. The invention comprises an arc-shaped end part, jaw arms, a spring and a handle, wherein the two jaw arms are movably connected in the middle; the sharp ends of the jaws of the jaw arms are respectively welded with an arc-shaped end part; the rear end of the jaw arm is provided with a handle, and a spring is arranged at the position close to the connecting pin. The invention can reduce the replacement work difficulty of the safety tube of the maintenance power box, reduce the damage probability of the safety tube, improve the work efficiency, reduce the work time and greatly reduce the operation risk of personnel.
Description
Technical Field
The invention belongs to the technical field of electrical maintenance of nuclear power stations, and particularly relates to a replacement tool for a safety tube of an overhaul power box.
Background
The following problems are found in the process of the maintenance and fault repair of the damaged protective tube of the unit 1 and 2 of a certain nuclear power station:
(1) the space in the maintenance power box is narrow, the hand cannot approach the position of the safety tube, and the operation of replacing the safety tube is extremely inconvenient;
(2) the safety tube is replaced by the sharp-nose pliers, the contact area between the sharp-nose pliers and the safety tube is small, the safety tube is prone to tilting if the force is light, and the safety tube is prone to being damaged if the force is too large, so that great difficulty is brought to the replacement of the safety tube;
(3) the safety tube is replaced by a vice, the jaw of the vice is too short, the sight is blocked when the safety tube is replaced, and the use is inconvenient;
(4) in the maintenance process of the maintenance power box, electrified fault detection is involved, when safety damage is found, although a safety pipe loop is not electrified, other positions of the maintenance power box are electrified, and the operation risk of replacing the safety pipe is large.
The replacement work of the power box safety tube is influenced by the operation conditions, the operation space and the operation tools, so that the situations of high operation risk, high operation difficulty and damage to the safety tube occur, and the tool is needed to optimize the replacement work of the power box safety tube.
Disclosure of Invention
The invention aims to provide a replacement tool for a power box safety tube for maintenance, which can reduce the replacement difficulty of the power box safety tube for maintenance and reduce the damage probability of the safety tube, can improve the working efficiency, reduce the working time and greatly reduce the operation risk of personnel.
The technical scheme adopted by the invention is as follows:
a replacement tool for a safety tube of an overhaul power supply box comprises an arc-shaped end part, jaw arms, a spring and a handle, wherein the two jaw arms are movably connected in the middle; the sharp ends of the jaws of the jaw arms are respectively welded with an arc-shaped end part; the rear end of the jaw arm is provided with a handle, and a spring is arranged at the position close to the connecting pin.
The two jaw arms are of a symmetrical structure, the thickness of the middle parts of the two jaw arms is only half of that of the jaw arms, a cylindrical pin is arranged in the middle of one jaw arm, a cylindrical hole is formed in the middle of the other jaw arm, and the two jaw arms are connected with the hole through the pin in the middle.
The arc-shaped end part of the jaw tip is used for clamping the protective tube, and the inner diameter, the outer diameter and the width of the arc-shaped end part are correspondingly adjusted according to the size of the protective tube.
The length of the jaw arm meets the requirement of operation in a narrow space, and meanwhile, the sight of workers is guaranteed.
The spring makes the whole tool keep a certain resilience force, and is convenient for people to use.
The handle is used for holding the handle of a worker, and a layer of insulating shell is arranged outside the handle to protect the worker.
A layer of insulating paint is brushed on the arc-shaped end part and the jaw arm, so that short circuit and electric shock of personnel can not be caused when the clamp body touches an electrified part.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the replacement tool for the safe tube of the maintenance power box, the working efficiency is improved, and the maintenance working time is effectively saved;
(2) according to the replacement tool for the safe pipe of the maintenance power box, the jaw arm of the replacement tool is long, so that the replacement tool is convenient for workers to operate in a narrow space, and meanwhile, the sight of the workers is guaranteed;
(3) according to the replacement tool for the safe tube of the overhaul power supply box, the end part of the jaw of the replacement tool is provided with the arc end part, so that the safe tube is fixed, and the safe tube is prevented from inclining;
(4) according to the replacement tool for the safe tube of the overhaul power supply box, the insulating layer is arranged on the surface of the tool, the insulating shell is arranged at the handle, the safety of workers is guaranteed, and the operation risk is reduced;
(5) according to the replacement tool for the safe tube of the overhaul power box, the spring is arranged at the position close to the handle, so that certain resilience force is ensured, the tool is more humanized, and the replacement tool is convenient for workers to use;
(6) the replacement tool for the safety tube of the maintenance power box is small in size and convenient to carry to a field for use.
Drawings
FIG. 1 is a schematic structural view of a tool for replacing a safe tube of an overhaul power supply box provided by the invention;
in the figure: 1. an arcuate end portion; 2. a jaw arm; 3. a spring; 4. a handle.
Detailed Description
The following describes a replacement tool for a safe tube of an inspection power box in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the replacement tool for the safety tube of the power source overhaul box provided by the invention comprises an arc-shaped end part 1, jaw arms 2, a spring 3 and a handle 4, wherein the two jaw arms are of a symmetrical structure, the thickness of the middle part of each jaw arm is only half of that of each jaw arm, a cylindrical pin is arranged in the middle of one jaw arm, a cylindrical hole is arranged in the middle of one jaw arm, and the two jaw arms 2 are connected with the holes through the pins in the middle; the sharp ends of the jaws of the jaw arms 2 are respectively welded with an arc-shaped end part 1; the rear end of the jaw arm 2 is provided with a handle 4, and a spring 3 is arranged at the position close to the connecting pin;
the arc-shaped end part 1 at the tip of the jaw is used for clamping a protective tube, tools with different specifications can be manufactured according to the size of the protective tube by the inner diameter and the outer diameter of the arc-shaped end part 1, and the width of the arc-shaped end part 1 can be correspondingly adjusted according to the length of the protective tube; the jaw arm 2 is long, so that the operation of workers in a narrow space is facilitated, and the sight of the workers is ensured; the spring 3 keeps a certain resilience force of the whole tool, so that the tool is convenient for people to use; the handle 4 is used for holding the hand of a worker, and a layer of insulating shell is arranged outside the handle 4 to protect the worker. The whole clamp body is brushed with a layer of insulating paint, so that short circuit and electric shock of personnel can not be caused when the clamp body touches a charged part.
The two jaw arms 2 are made of stainless steel, the hardness of the fuse replacing tool is guaranteed by the stainless steel, and meanwhile, the stainless steel has the non-rusting characteristic.
The handle shell is made of rubber and is a layer of reinforced insulating protective sleeve, so that the hands of workers are prevented from directly contacting the metal part, the workers are protected, and electric shock is prevented;
the outer layer of the handle shell is provided with anti-slip stripes to prevent tools from slipping.
A section of small spring is arranged between the two forceps bodies, when the forceps bodies are closed, the spring is compressed to store certain energy, and when hands are loosened, the forceps bodies are opened, so that the tool is convenient for a worker to use again.
The working principle of the invention is as follows:
when the power box protective tube is installed and overhauled, the protective tube is placed on the arc-shaped end portion 1, the handle 4 is held tightly by proper strength, the protective tube is in a clamping state, the resistance value of the protective tube can be measured by using a universal meter at the moment, the quality of the protective tube is verified, and due to the fact that the surface of the arc-shaped end portion 1 is provided with a layer of insulating paint, the measuring result is accurate, and the influence of hands or other conducting objects on the quality of the protective tube is avoided.
When the protective tube of the maintenance power box is detached, the protective tube is clamped by the arc-shaped end part 1, a worker holds the handle 4 tightly, the protective tube is horizontally pulled out, and the probability of damage to the protective tube is reduced due to the fact that the contact area between the protective tube and the arc-shaped end part 1 is large and even.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the technical scope of the present invention.
Claims (7)
1. The utility model provides an overhaul power supply box protective tube replacement instrument which characterized in that: comprises an arc end part (1), jaw arms (2), a spring (3) and a handle (4), wherein the two jaw arms (2) are movably connected in the middle; the sharp ends of the jaws of the jaw arms (2) are respectively welded with an arc-shaped end part (1); the rear end of the jaw arm (2) is provided with a handle (4), and a spring (3) is arranged at the position close to the connecting pin.
2. An overhaul power supply box safety pipe replacement tool according to claim 1, characterized in that: the two jaw arms (2) are of a symmetrical structure, the thickness of the middle parts of the jaw arms is only half of that of the jaw arms (2), a cylindrical pin is arranged in the middle of one jaw arm (2), a cylindrical hole is arranged in the middle of the other jaw arm, and the two jaw arms (2) are connected with the hole in the middle through the pin.
3. An overhaul power supply box safety pipe replacement tool according to claim 1, characterized in that: the arc-shaped end part (1) at the tip of the jaw is used for clamping the protective tube, and the inner diameter, the outer diameter and the width of the arc-shaped end part (1) are correspondingly adjusted according to the size of the protective tube.
4. An overhaul power supply box safety pipe replacement tool according to claim 2, characterized in that: the length of the jaw arm (2) meets the requirement of operation in a narrow space, and meanwhile, the sight of workers is guaranteed.
5. An overhaul power supply box safety pipe replacement tool according to claim 1, characterized in that: the spring (3) enables the whole tool to keep a certain resilience force, so that the tool is convenient for people to use.
6. An overhaul power supply box safety pipe replacement tool according to claim 1, characterized in that: the handle (4) is used for holding the hand of a worker, and a layer of insulating shell is arranged outside the handle (4) to protect the worker.
7. An inspection power supply safe replacement tool as claimed in any one of claims 1 to 6, wherein: a layer of insulating paint is brushed on the arc-shaped end part (1) and the jaw arm (2), so that short circuit and electric shock of personnel can not be caused when the clamp body is prevented from touching the charged part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010609631.9A CN111716275A (en) | 2020-06-29 | 2020-06-29 | Overhaul power supply box protective tube replacement tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010609631.9A CN111716275A (en) | 2020-06-29 | 2020-06-29 | Overhaul power supply box protective tube replacement tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111716275A true CN111716275A (en) | 2020-09-29 |
Family
ID=72571851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010609631.9A Pending CN111716275A (en) | 2020-06-29 | 2020-06-29 | Overhaul power supply box protective tube replacement tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111716275A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975789A (en) * | 2021-04-02 | 2021-06-18 | 江苏核电有限公司 | Nuclear power station diesel engine high-pressure oil pump overhauling device and overhauling method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH479968A (en) * | 1967-03-13 | 1969-10-15 | Franz Dipl Ing Eilmansberger | Fuse pliers for the safe operation of high and low voltage high performance fuses |
| US20080302218A1 (en) * | 2007-06-08 | 2008-12-11 | Lisle Corporation | Four wheel drive hub lock removal tool |
| CN201289973Y (en) * | 2008-11-03 | 2009-08-12 | 河南省电力公司焦作供电公司 | Clamp type insurance assembling and disassembling device |
| CN201437220U (en) * | 2009-08-05 | 2010-04-14 | 广西玉柴机器股份有限公司 | multifunctional pliers |
| CN202474619U (en) * | 2012-03-13 | 2012-10-03 | 刘世军 | 10 kV high-voltage fuse clamp |
| CN103296594A (en) * | 2013-05-06 | 2013-09-11 | 国家电网公司 | One-time fuse mounting tool for 10kV voltage transformer |
| CN204639982U (en) * | 2015-04-15 | 2015-09-16 | 青岛正大农业发展有限公司 | One is convenient to change fuse special safety pincers |
| CN208401369U (en) * | 2018-05-21 | 2019-01-18 | 国网宁夏电力有限公司固原供电公司 | Switchgear change of fuse multifunction insulating clamp |
| CN208753836U (en) * | 2018-10-18 | 2019-04-16 | 张兆丰 | A kind of throwing of secondary fuse takes pincers |
| CN212497476U (en) * | 2020-06-29 | 2021-02-09 | 江苏核电有限公司 | Overhaul power supply box protective tube replacement tool |
-
2020
- 2020-06-29 CN CN202010609631.9A patent/CN111716275A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH479968A (en) * | 1967-03-13 | 1969-10-15 | Franz Dipl Ing Eilmansberger | Fuse pliers for the safe operation of high and low voltage high performance fuses |
| US20080302218A1 (en) * | 2007-06-08 | 2008-12-11 | Lisle Corporation | Four wheel drive hub lock removal tool |
| CN201289973Y (en) * | 2008-11-03 | 2009-08-12 | 河南省电力公司焦作供电公司 | Clamp type insurance assembling and disassembling device |
| CN201437220U (en) * | 2009-08-05 | 2010-04-14 | 广西玉柴机器股份有限公司 | multifunctional pliers |
| CN202474619U (en) * | 2012-03-13 | 2012-10-03 | 刘世军 | 10 kV high-voltage fuse clamp |
| CN103296594A (en) * | 2013-05-06 | 2013-09-11 | 国家电网公司 | One-time fuse mounting tool for 10kV voltage transformer |
| CN204639982U (en) * | 2015-04-15 | 2015-09-16 | 青岛正大农业发展有限公司 | One is convenient to change fuse special safety pincers |
| CN208401369U (en) * | 2018-05-21 | 2019-01-18 | 国网宁夏电力有限公司固原供电公司 | Switchgear change of fuse multifunction insulating clamp |
| CN208753836U (en) * | 2018-10-18 | 2019-04-16 | 张兆丰 | A kind of throwing of secondary fuse takes pincers |
| CN212497476U (en) * | 2020-06-29 | 2021-02-09 | 江苏核电有限公司 | Overhaul power supply box protective tube replacement tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975789A (en) * | 2021-04-02 | 2021-06-18 | 江苏核电有限公司 | Nuclear power station diesel engine high-pressure oil pump overhauling device and overhauling method thereof |
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