CN111823188A - Rotary type lead lining auxiliary tool with internal threads and operation method - Google Patents
Rotary type lead lining auxiliary tool with internal threads and operation method Download PDFInfo
- Publication number
- CN111823188A CN111823188A CN202010807123.1A CN202010807123A CN111823188A CN 111823188 A CN111823188 A CN 111823188A CN 202010807123 A CN202010807123 A CN 202010807123A CN 111823188 A CN111823188 A CN 111823188A
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- detachable
- disc
- cylinder
- internal thread
- mould
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 238000003466 welding Methods 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000011017 operating method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000001141 propulsive effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004534 enameling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
-
- 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
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a rotary type lead lining auxiliary tool with internal threads and an operation method, relates to the field of lead lining auxiliary tools, and solves the problems that the operation of the traditional process is narrow in space and has high technological requirements on operators. The method comprises the steps of manufacturing a detachable die (1) according to the radius of a metal protective cover (19), wherein the detachable die (1) is matched with a detachable disc (12) for use, the detachable die (1) and the detachable disc (12) in the same set have the same inclination, and a primarily bent lead sealing welding rod is placed on the outer side of an external thread of the detachable disc (12) and is used for uniformly rotating and pushing the primarily bent lead sealing welding rod inwards along the internal thread of a cylinder (8) with an internal thread to reduce the primarily bent lead sealing welding rod to the radius of the metal protective cover (19). The invention can turn the lead sealing welding rod into the welding rod step by manually rotating the detachable disc, thereby saving time and improving efficiency.
Description
Technical Field
The invention relates to the field of auxiliary tools for lead lining, in particular to a rotary auxiliary tool for lead lining with internal threads and an operation method.
Background
The technology requires skillful operation workers and certain requirements on tools and materials used, and the lead-lined process plays a role in sealing the connection of a terminal and an intermediate joint of a metal lead sheath or an aluminum sheath cable, and prevents moisture from invading, thereby ensuring that the cable can run safely, stably and reliably.
At present, the lead enameling process mainly comprises two methods: the contact lead method and the casting lead method. Among them, the lead-contact method is widely adopted because of its simple method because of less tool usage, but because of the need to bend the lead-sealing welding rod into the arc with the required radius, the requirements for the technique and skill of the operating worker are high in the actual operation process, and simultaneously, the time and the labor are also consumed. For example, when a 110kV cable intermediate joint lead-lining process is carried out, a metal protective cover and an aluminum sheath need to be sealed, a lead-sealing welding rod is bent into an arc with the radius equal to that of the metal protective cover by manpower in a construction site, the lead-sealing welding rod is clamped between the metal protective cover and the aluminum sheath in a knocking mode, then the lead-sealing welding rod is heated and melted to be uniformly added to a lead-sealing part, the operation is narrow in space, and the process requirement on an operator is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a rotary type lead lining auxiliary tool with internal threads and an operation method thereof, which solve the problems, are used for gradually rotating and reducing lead sealing welding rods from large-radius arcs into uniform arcs with required radius and accumulating the uniform arcs at positions needing lead sealing, thereby reducing the working difficulty of operators.
The invention is realized by the following technical scheme:
a rotary type lead lining auxiliary tool with internal threads comprises a detachable die, a cylinder with internal threads and a detachable disc, wherein the detachable die, the cylinder with the internal threads and the detachable disc are manufactured according to the radius of a metal protection cover;
the detachable mould and the detachable disc are matched for use, and the detachable mould and the detachable disc in the same set have the same inclination;
the detachable die and the cylinder with the internal thread are fixed and limited through bolts;
the cylindrical internal thread of in-band screw thread with the external screw thread cooperation of detachable disc is used, the preliminary crooked lead sealing welding rod is placed in the external screw thread outside of detachable disc, detachable disc is used for pushing away preliminary crooked lead sealing welding rod along the even rotation of in-band screw thread, detachable disc is used for reducing the preliminary crooked lead sealing welding rod to metal protection cover radius.
Furthermore, the detachable mould, the cylinder with the internal thread and the detachable disc are all made into an upper spliced part and a lower spliced part, every two spliced parts are fixed through bolts, and the bolts are loosened and taken out after the work is finished.
Further, the detachable die is used for connecting the internal thread cylinder and the metal protective cover;
the detachable die comprises a die vertical bolt, a die vertical hoop, a die horizontal bolt and a die horizontal hoop;
the mould vertical bolt is used for fixing the upper part and the lower part of the detachable mould;
the vertical anchor ears of the die are respectively fixed at the upper part and the lower part of the detachable die;
the vertical bolt of the die penetrates through the vertical hoop of the die to fix the upper part and the lower part of the detachable die to form a complete circular arc;
the die horizontal bolt is of a horizontal structure and is used for fixing the detachable die and the cylinder with the internal thread;
the horizontal anchor ear of mould is fixed on detachable mould and is formed a pair with another anchor ear of fixing on taking the internal screw thread cylinder, and mould horizontal bolt runs through the horizontal anchor ear of mould and fixes another anchor ear on taking the internal screw thread cylinder.
Furthermore, the cylinder with the internal thread is used for connecting the detachable mould and the detachable disc;
the cylinder with the internal thread comprises a cylindrical horizontal hoop, a cylindrical vertical bolt and a cylindrical vertical hoop;
the cylindrical horizontal hoop is fixed on the cylinder with the internal thread and matched with the mold horizontal hoop, and the cylindrical horizontal hoop is the other hoop fixed on the cylinder with the internal thread;
the cylindrical vertical bolt is used for fixing the upper part and the lower part of the internal thread cylinder;
the vertical hoop of cylinder is fixed on the cylinder with internal thread, and the vertical bolt of cylinder runs through the cylinder with internal thread.
Furthermore, the detachable disc is matched with the detachable mold, and the detachable disc is used for turning the detachable mold;
the detachable disc comprises a disc vertical bolt, a disc vertical hoop, a fixed handle and a circular hole;
the disc vertical bolt is used for fixing the upper part and the lower part of the detachable disc;
the disc vertical hoops are respectively fixed on the upper part and the lower part of the detachable disc and are used for connecting the disc vertical bolts;
the fixed handle is fixed at the bottom of the detachable disc and is grabbed by an operator to be used for turning and sealing a lead welding rod into the detachable die through the internal thread cylinder;
the circular hole is formed in the middle of the detachable disc and is used for placing all models of aluminum sheaths.
Furthermore, the inner side of the cylinder with the internal thread is provided with internal threads processed along a circle of an arc.
Further, the fixed handle cooperation operating personnel's both hands position sets up the figure two, and two fixed handles have the opposite side of external screw thread towards detachable disc.
The operation method of the rotary type lead lining auxiliary tool with the internal thread comprises the following steps of:
after an operator puts the primarily bent lead sealing welding rod into an inlet at one end of the internal thread of the cylinder with the internal thread, a detachable disc is mounted and abuts against the lead sealing welding rod, the operator holds the fixed handle by two hands to rotationally drive the lead sealing welding rod towards the direction of the cylinder with the internal thread until the lead sealing welding rod is reduced to a specified radius, and the specified radius is the radius of the metal protective cover.
Furthermore, a plurality of sets of detachable dies and detachable discs are manufactured, each set of detachable dies have different radius sizes, the radius sizes are corresponding sizes of different cable sections, and the metal protection covers of the 110kV-220kV power cables have different radii, so that the detachable dies are designed, and the auxiliary tool is suitable for different application scenes by manufacturing the detachable dies with different radius sizes. In addition, when the terminal head lead sealing process is carried out, only detachable dies with different cable sections and corresponding sizes are required to be manufactured, and the auxiliary tool can be widely applied.
The following is a disclosure of the principles of the present invention: aiming at the problems of the lead contact method adopted in the traditional lead lining process, the scheme is improved and mainly reflected in that:
the original lead contact method needs to bend the lead sealing welding rod uniformly to the required radius by manpower, has high requirements on the process and the technique of operators, and generally adopts a hammering mode on the unbent uniform part on site, so that the conditions of waste products and substandard lead lining are easy to occur in the whole operation process.
This scheme is through installing appurtenance additional, and with 110kV cable intermediate head warding off plumbous technology as an example, when warding off plumbous metal safety cover and aluminum sheath, operating personnel only need put into the cylindrical port of in-band screw thread with the roughly bending of lead sealing welding rod, then adopts rotatory propulsive mode, evenly obtains the lead sealing welding rod of required radius size, and the yield is higher. In addition, through detachable mould, can make this appurtenance extension be applied to the occasion of different radius size requirements.
The invention has the following advantages and beneficial effects:
the invention can turn the lead sealing welding rod into the welding rod step by manually rotating the detachable disc, thereby saving time and improving efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a front view of the rotary auxiliary tool with internal threads for connecting a metal protective cover and an aluminum sheath according to the present invention.
FIG. 2 is a side view of the mold with a detachable side view of the present invention.
FIG. 3 is a schematic side view of the internally threaded cylinder of the present invention.
FIG. 4 is a side view of the removable disk of the present invention.
Reference numbers and corresponding part names in the drawings:
1. a detachable mold; 2. a mold vertical bolt; 3. a mould is vertically hooped; 5. a mold horizontal bolt; 6. horizontally hooping the die; 7. a cylindrical horizontal hoop; 8. a cylinder with internal threads; 9. a cylindrical vertical bolt; 10. a cylindrical vertical hoop; 12. a removable disk; 13. a disc vertical bolt; 14. a disc vertical hoop; 16. fixing a handle; 19. a metal protective cover; 20. an aluminum sheath; 21. a circular hole.
Detailed Description
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive changes, are within the scope of the present invention.
A rotary lead lining auxiliary tool with internal threads is shown in figures 1-4 and comprises a detachable mould 1, a cylinder 8 with internal threads and a detachable disc 12 which are manufactured according to the radius of a metal protective cover 19;
the detachable mould 1 and the detachable disc 12 are matched for use, and the detachable mould 1 and the detachable disc 12 in the same set have the same inclination;
the detachable die 1 and the cylinder 8 with the internal thread are fixed and limited through bolts;
the internal thread of taking internal thread cylinder 8 with the external screw thread cooperation of detachable disc 12 is used, the preliminary crooked lead sealing welding rod is placed in the external screw thread outside of detachable disc 12, detachable disc 12 is used for pushing away preliminary crooked lead sealing welding rod along the even rotation of internal thread of taking internal thread cylinder 8, detachable disc 12 is used for reducing the preliminary crooked lead sealing welding rod to metal protection cover 19 radiuses.
Preferably, the detachable mold 1, the cylinder 8 with the internal thread and the detachable disc 12 are made into an upper spliced part and a lower spliced part, every two spliced parts are fixed through bolts, and the bolts are loosened and taken out after the work is finished.
Preferably, the detachable die 1 is used for connecting the internal threaded cylinder 8 and the metal protective cover 19;
the detachable die 1 comprises a die vertical bolt 2, a die vertical hoop 3, a die horizontal bolt 5 and a die horizontal hoop 6;
the mould vertical bolt 2 is used for fixing the upper part and the lower part of the detachable mould 1;
the vertical anchor ears 3 of the mould are respectively fixed at the upper part and the lower part of the detachable mould 1;
the vertical bolt 2 of the mould penetrates through the vertical hoop 3 of the mould to fix the upper part and the lower part of the detachable mould 1 to form a complete circular arc;
the die horizontal bolt 5 is of a horizontal structure and is used for fixing the detachable die 1 and the cylinder 8 with the internal thread;
the horizontal anchor ear 6 of mould is fixed on detachable mould 1 and is formed a pair ofly with another anchor ear of fixing on taking internal screw thread cylinder 8, and mould horizontal bolt 5 runs through horizontal anchor ear 6 of mould and fixes another anchor ear on taking internal screw thread cylinder 8.
Preferably, the cylinder 8 with the internal thread is used for connecting the detachable mold 1 and the detachable disk 12;
the column 8 with the internal thread comprises a column horizontal hoop 7, a column vertical bolt 9 and a column vertical hoop 10;
the cylindrical horizontal hoop 7 is fixed on the cylindrical column 8 with the internal thread and is matched with the die horizontal hoop 6, and the cylindrical horizontal hoop 7 is the other hoop fixed on the cylindrical column 8 with the internal thread;
the cylindrical vertical bolt 9 is used for fixing the upper part and the lower part of the internal thread cylinder 8;
the vertical hoop 10 of the cylinder is fixed on the cylinder 8 with the internal thread, and the vertical bolt 9 of the cylinder penetrates through the cylinder 8 with the internal thread.
Preferably, the detachable disc 12 is matched with the detachable mold 1, and the detachable disc 12 is used for turning the detachable mold 1;
the detachable disc 12 comprises a disc vertical bolt 13, a disc vertical hoop 14, a fixed handle 16 and a circular hole 21;
the disc vertical bolt 13 is used for fixing the upper part and the lower part of the detachable disc 12;
the disc vertical hoops 14 are respectively fixed on the upper part and the lower part of the detachable disc 12 and are used for connecting the disc vertical bolts 13;
the fixed handle 16 is fixed at the bottom of the detachable disc 12, and the fixed handle 16 is grabbed by an operator to be used for turning and sealing a lead welding rod to enter the detachable die 1 through the column 8 with the internal thread;
the circular hole 21 is formed in the middle of the detachable disc 12, and the circular hole 21 is used for placing all models of aluminum sheaths 20.
Preferably, the inner side of the cylinder 8 with the internal thread is provided with an internal thread processed along a circle of an arc.
Preferably, the number of the fixed handles 16 is two according to the positions of both hands of the operator, and the two fixed handles 16 face the other side of the detachable disk 12 with the external thread.
The operation method of the rotary type lead lining auxiliary tool with the internal thread comprises the following steps of:
after an operator puts the primarily bent lead sealing welding rod into an inlet at one end of the internal thread of the cylinder 8 with the internal thread, the detachable disc 12 is installed, the detachable disc 12 abuts against the lead sealing welding rod, the operator holds the fixed handle 16 with both hands to rotationally drive the lead sealing welding rod towards the cylinder 8 with the internal thread until the lead sealing welding rod is reduced to a specified radius, and the specified radius is the radius of the metal protective cover 19.
Preferably, a plurality of sets of detachable molds 1 and detachable discs 12 are manufactured, each set of detachable mold 1 has different radius sizes, the radius sizes are corresponding sizes of different cable sections, and the radius of the metal protection cover 19 of the 110kV-220kV power cable is different, so that the detachable mold 1 is designed, and the auxiliary tool is suitable for different application scenes by manufacturing the detachable molds 1 with different radius sizes. In addition, when the terminal head lead sealing process is carried out, the auxiliary tool can be widely applied only by manufacturing the detachable die 1 with different cable sections and corresponding sizes.
The following is a disclosure of the principles of the present invention: aiming at the problems of the lead contact method adopted in the traditional lead lining process, the scheme is improved and mainly reflected in that:
the original lead contact method needs to bend the lead sealing welding rod uniformly to the required radius by manpower, has high requirements on the process and the technique of operators, and generally adopts a hammering mode on the unbent uniform part on site, so that the conditions of waste products and substandard lead lining are easy to occur in the whole operation process.
This scheme is through installing appurtenance additional, and with 110kV cable intermediate head warding off plumbous technology as an example, when warding off plumbous metal safety cover 19 and aluminum sheath 20, operating personnel only need put into the port of in-band screw thread cylinder 8 with the roughly bending of lead sealing welding rod, then adopts rotatory propulsive mode, evenly obtains the lead sealing welding rod of required radius size, and the yield is higher. In addition, through the detachable mould 1, the auxiliary tool can be expanded and applied to occasions with different radius size requirements.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A rotary type lead lining auxiliary tool with internal threads is characterized by comprising a detachable die (1), a cylinder (8) with internal threads and a detachable disc (12) which are manufactured according to the radius of a metal protective cover (19);
the detachable mould (1) is matched with the detachable disc (12) for use, and the detachable mould (1) and the detachable disc (12) in the same set have the same inclination;
the detachable die (1) and the cylinder (8) with the internal thread are fixed and limited by bolts;
the internal thread of taking internal thread cylinder (8) with the external screw thread cooperation of detachable disc (12) is used, preliminary crooked lead sealing welding rod is placed in the external screw thread outside of detachable disc (12), detachable disc (12) are used for pushing in preliminary crooked lead sealing welding rod along the even rotation of internal thread of taking internal thread cylinder (8), detachable disc (12) are used for reducing preliminary crooked lead sealing welding rod to metal protection cover (19) radius.
2. The rotary type lead lining auxiliary tool with the internal thread as claimed in claim 1, wherein the detachable mold (1), the cylinder (8) with the internal thread and the detachable disc (12) are made into an upper and a lower two spliced components, each two spliced components are fixed by bolts, and the bolts are loosened to be taken out after the work is completed.
3. An internally threaded rotary lead lining aid according to claim 2, wherein the detachable die (1) is adapted to connect the internally threaded cylinder (8) and the metal shield (19);
the detachable mould (1) comprises a mould vertical bolt (2), a mould vertical hoop (3), a mould horizontal bolt (5) and a mould horizontal hoop (6);
the vertical bolt (2) of the mould is used for fixing the upper part and the lower part of the detachable mould (1);
the vertical anchor ear (3) of the mould is respectively fixed at the upper part and the lower part of the detachable mould (1);
the vertical bolt (2) of the mould penetrates through the vertical hoop (3) of the mould to fix the upper part and the lower part of the detachable mould (1) to form a complete circular arc;
the die horizontal bolt (5) is of a horizontal structure and is used for fixing the detachable die (1) and the cylinder (8) with the internal thread;
the horizontal anchor ear (6) of mould is fixed on detachable mould (1) and is formed a pair ofly with another anchor ear of fixing on taking internal screw thread cylinder (8), and mould horizontal bolt (5) run through horizontal anchor ear (6) of mould and fix another anchor ear on taking internal screw thread cylinder (8).
4. An internally threaded rotary lead lining aid tool according to claim 3, wherein the internally threaded cylinder (8) is internally threaded for connecting the removable mold (1) and the removable disk (12);
the column (8) with the internal thread comprises a column horizontal hoop (7), a column vertical bolt (9) and a column vertical hoop (10);
the cylindrical horizontal hoop (7) is fixed on the cylinder (8) with the internal thread and is matched with the mold horizontal hoop (6), and the cylindrical horizontal hoop (7) is the other hoop fixed on the cylinder (8) with the internal thread;
the cylindrical vertical bolt (9) is used for fixing the upper part and the lower part of the internal thread cylinder (8);
the vertical hoop (10) of the cylinder is fixed on the cylinder (8) with the internal thread, and the vertical bolt (9) of the cylinder penetrates through the cylinder (8) with the internal thread.
5. The rotary type lead lining auxiliary tool with the internal thread as claimed in claim 4, wherein the detachable disc (12) is matched with the detachable die (1), and the detachable disc (12) is used for turning into the detachable die (1);
the detachable disc (12) comprises a disc vertical bolt (13), a disc vertical hoop (14), a fixed handle (16) and a circular hole (21);
the disc vertical bolt (13) is used for fixing the upper part and the lower part of the detachable disc (12);
the vertical circular disc hoops (14) are respectively fixed on the upper part and the lower part of the detachable circular disc (12) and are used for connecting the vertical circular disc bolts (13);
the fixed handle (16) is fixed at the bottom of the detachable disc (12), and the fixed handle (16) is grabbed by an operator to be used for turning and sealing a lead welding rod to enter the detachable die (1) through the cylinder (8) with the internal thread;
the round hole (21) is arranged in the middle of the detachable disc (12), and the round hole (21) is used for placing aluminum sheaths (20) of all models.
6. The rotary lead lining auxiliary tool with internal threads as claimed in claim 4, wherein the inner side of the cylinder (8) with internal threads is provided with internal threads which are machined along a circle of an arc.
7. An internally threaded rotary lead lining aid as claimed in claim 5, wherein the number of said fixed handles (16) is two in relation to the position of the operator's hands, two fixed handles (16) facing the other side of the removable disk (12) having the external thread.
8. An operation method of a rotary lead lining auxiliary tool with an internal thread is characterized by comprising the following steps of applying the rotary lead lining auxiliary tool with the internal thread as claimed in any one of claims 1 to 7:
after an operator puts the primarily bent lead sealing welding rod into an inlet at one end of an internal thread of the cylinder (8) with the internal thread, the detachable disc (12) is installed, the detachable disc (12) supports against the lead sealing welding rod, the operator holds the fixed handle (16) with two hands to rotationally drive the lead sealing welding rod towards the cylinder (8) with the internal thread until the lead sealing welding rod is reduced to a specified radius, and the specified radius is the radius of the metal protective cover (19).
9. The operating method of the rotary lead lining auxiliary tool with the internal threads as claimed in claim 8, wherein a plurality of sets of the detachable dies (1) and the detachable discs (12) are manufactured, each set of the detachable dies (1) has different radius sizes, and the radius sizes are different cable cross-section corresponding sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010807123.1A CN111823188B (en) | 2020-08-12 | 2020-08-12 | Rotary lead-lined auxiliary tool with internal threads and operation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010807123.1A CN111823188B (en) | 2020-08-12 | 2020-08-12 | Rotary lead-lined auxiliary tool with internal threads and operation method |
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| Publication Number | Publication Date |
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| CN111823188A true CN111823188A (en) | 2020-10-27 |
| CN111823188B CN111823188B (en) | 2024-06-18 |
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| CN202010807123.1A Active CN111823188B (en) | 2020-08-12 | 2020-08-12 | Rotary lead-lined auxiliary tool with internal threads and operation method |
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|---|---|
| CN111823188B (en) | 2024-06-18 |
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