CN110596844B - Casing threading device - Google Patents
Casing threading device Download PDFInfo
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- CN110596844B CN110596844B CN201910852851.1A CN201910852851A CN110596844B CN 110596844 B CN110596844 B CN 110596844B CN 201910852851 A CN201910852851 A CN 201910852851A CN 110596844 B CN110596844 B CN 110596844B
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- fixed pipe
- follower
- sleeve
- iron
- casing
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/54—Underground or underwater installation; Installation through tubing, conduits or ducts using mechanical means, e.g. pulling or pushing devices
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention provides a casing threading device which is used for casing threading of tail fibers and network cables and comprises an electromagnetic tractor and a fixer, wherein the electromagnetic tractor comprises a traction part and an insulating handle, the traction part comprises an iron core and an iron shell wound with a coil, the left end of the iron shell is connected with the insulating handle, the right end of the iron shell is provided with an accommodating space for accommodating the coil and the iron core, and the two ends of the coil are respectively connected with a power line so as to supply power through an external power supply device; the fixer comprises a follower, a fixing pipe and a connecting joint, wherein the follower is made of an iron material and is connected with the upper end of the fixing pipe, the connecting joint is arranged inside the lower end of the fixing pipe, the fixing pipe is provided with a plurality of lubricating pieces along the radial direction so as to reduce the friction coefficient between the fixing pipe and the sleeve pipe, and the connecting joint is provided with an interface matched with the joint of the piece to be penetrated. The threading apparatus is time-saving and labor-saving, and can improve the working efficiency.
Description
Technical Field
The invention relates to a casing threading device, in particular to a casing threading device for threading tail fibers or net wires.
Background
With the continuous increase and the update of communication equipment of transformer substation, the work of carrying out the tail optical fiber sleeve pipe becomes more and more frequent, needs to carry out a large amount of tail optical fiber sleeve pipe work, when meetting the condition that equipment is far away from Optical Distribution Frame (ODF) or need more and carry out the sleeve pipe threading with the tail optical fiber, needs to carry out the optical fiber sleeve pipe of many fine numbers, long distance.
However, the threading operation of the tail fiber casing at present basically adopts the traditional threading technology, and has the following problems: (1) the tail fiber connector is firstly fixed before the threading of the sleeve, and the fixing method is to use an adhesive tape to wind and bind, however, the method has certain potential safety hazard and can cause the damage of the tail fiber connector and the optical fiber at the connector in the threading process. (2) The connector drives the optical fiber to thread in the sleeve by using a manual swinging mode. However, the method is time-consuming and labor-consuming, and when the casing pipe with a long distance is encountered, the working difficulty is increased, the working time is greatly prolonged, and the working efficiency is low. In addition, the process of the tail fiber passing through the sleeve needs to be cautious, the optical fiber is fragile, and the optical fiber at the joint of the tail fiber is easily damaged, so that the waste of the optical fiber is caused.
In addition, as networks become more widespread, more and more households start to install networks, and similar problems exist with respect to network cable threading.
Therefore, how to rapidly and effectively thread the tail fiber and the network cable into the sleeve becomes a difficult problem to be overcome by the communication industry.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a casing threading device which can quickly and effectively carry out casing threading work of tail fibers or net wires.
The technical scheme adopted by the invention is as follows:
the embodiment of the invention provides a casing threading device which is used for casing threading of tail fibers or network cables and comprises an electromagnetic tractor and a fixer, wherein the electromagnetic tractor comprises a traction part and an insulating handle, the traction part comprises an iron core and an iron shell wound with a coil, the left end of the iron shell is connected with the insulating handle, the right end of the iron shell is provided with an accommodating space for accommodating the coil and the iron core, and the two ends of the coil are respectively connected with a power line so as to supply power through an external power supply device; the fixer comprises a follower, a fixed pipe and a connecting joint, wherein the follower is made of ferrous materials and is connected with the upper end of the fixed pipe, the connecting joint is arranged inside the lower end of the fixed pipe, the fixed pipe is provided with a plurality of lubricating pieces along the radial direction so as to reduce the friction coefficient between the fixed pipe and the sleeve pipe, and the connecting joint is provided with an interface matched with the joint of the piece to be penetrated; when threading is carried out, the electrified electromagnetic tractor is arranged on the outer side of the sleeve, the follower in the sleeve is attracted, the traction part of the electromagnetic tractor slides along the length direction of the sleeve by operating the insulating handle, so that the follower is pulled to slide along the sleeve under the action of magnetic force, and the piece to be threaded is driven to penetrate through the sleeve.
Optionally, the lubricant is iron wire; the lower extreme of fixed pipe is formed with the through-hole, the one end of iron wire is passed through the through-hole and is fixed the lower extreme, the other end bending of iron wire is walked around the terminal surface of upper end and is fixed the upper end of fixed pipe.
Optionally, the follower is connected to the fixed pipe through a connector, the connector includes a baffle plate and a connecting rod, the baffle plate is connected to the upper end of the fixed pipe, and the connecting rod passes through the baffle plate and is connected to the follower.
Optionally, the piece to be penetrated is a tail fiber; the connecting joint is a disc matched with the lower end of the fixed pipe, and a plurality of clamping grooves for fixing the joints of the tail fibers are formed in the disc; one end of the connecting rod penetrates through the baffle plate to be connected with the follower, and the other end of the connecting rod is connected with the connecting joint.
Optionally, the connector further comprises a flange connector for fixing the connector of the tail fiber in the card slot.
Optionally, the piece to be threaded is a mesh wire, and the connecting joint is a mesh wire joint and is bonded inside the lower end of the fixed pipe; one end of the connecting rod is abutted against the baffle plate, and the other end of the connecting rod penetrates through the baffle plate to be connected with the follower.
Optionally, the baffle is bonded within the upper end of the stationary tube.
Optionally, the outer surface of the fixed pipe is coated with lubricating paint; the friction coefficient between the fixed pipe and the sleeve is within the range of 0.04-0.05.
Optionally, a sealing member is disposed between an end of the right end of the iron case and the iron core, and is used for sealing the coil.
Optionally, the fixed pipe is made of polyether sulfone plastic.
According to the casing threading device provided by the embodiment of the invention, the connector of the piece to be threaded is fixed on the fixer, then stable and reliable traction force is provided by the electromagnetic tractor adopting the coil to wind the iron core, the fixer is driven to pass through the casing, threading operation is completed, the casing threading process of the tail fiber or the net wire can be normalized, threading work becomes simple and easy, the condition that the tail fiber or the net wire is clamped in the casing to cause damage of the tail fiber during casing threading is avoided, and in addition, the casing threading process of swinging is not carried out, so that unnecessary damage to equipment caused by mistaken collision of the equipment due to swinging errors is avoided.
Drawings
FIG. 1 is a schematic structural view of a casing threader according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a core wound with coils in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a pigtail splice of an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In the embodiments of the present invention, the terms "upper end", "lower end", "left end", and "right end" and the like are relative to the drawing direction.
As shown in fig. 1 and 2, the embodiment of the present invention provides a casing threader for casing threading of a pigtail or a net string, that is, for threading the pigtail and the net string through a casing 1. The casing threading device can comprise an electromagnetic tractor and a fixer, the electromagnetic tractor can comprise a traction part 2 and an insulating handle 4, the traction part 2 comprises an iron core 9 wound with a coil 10 and an iron shell, the left end of the iron shell is connected with the insulating handle 4, the right end of the iron shell is provided with an accommodating space for accommodating the coil 10 and the iron core 9, and the two ends of the coil 10 are respectively connected with a power line 3 so as to be supplied with power through an external power supply device; the fixer can comprise a follower 8, a fixed tube 5 and a connecting joint, wherein the follower 8 is made of ferrous materials and is connected with the upper end of the fixed tube 5, the connecting joint is arranged inside the lower end of the fixed tube, the fixed tube is provided with a plurality of lubricating pieces 7 along the radial direction to reduce the friction coefficient between the fixed tube 5 and the sleeve 1, and the connecting joint is provided with an interface matched with the joint of the piece 6 to be penetrated; when threading is carried out, the electrified electromagnetic tractor is arranged outside the sleeve and sucks the follower 8 in the sleeve, and the traction part 2 of the electromagnetic tractor slides along the length direction of the sleeve by operating the insulating handle 4, so that the follower 8 is pulled to slide along the sleeve under the action of magnetic force, and the to-be-threaded part 6 is driven to pass through the sleeve. Specifically, when the casing threading device provided by the embodiment of the invention is used for threading, the joint of the piece 6 to be threaded is installed on the interface of the connecting joint, then the fixer is placed into the casing, the insulating handle 4 is operated to enable the electromagnetic tractor to be close to the outer wall of the casing, the power supply is powered on, the powered coil generates magnetic force to attract the follower 8 in the casing, the electromagnetic tractor is moved along the length direction of the casing, the follower 8 is driven to move forwards under the action of the magnetic force, and then the piece 6 to be threaded is driven to move forwards to penetrate through the casing, so that the threading operation is completed.
In the embodiment of the present invention, as shown in fig. 2, a reliable and stable traction force can be ensured by adding a structure of an iron core in the middle of the coil to provide the traction force. The number of turns and the interval of winding of the coil can be set according to actual needs as long as the required traction force can be ensured. In actual operation, can cut, processing such as compression to coil 10 according to the coil number of turns requirement, polish the processing to the incision, guarantee smoothly and levelly and smoothly, make the coil number of turns that accords with the requirement, the error is guaranteed within the round, then is connected power cord and power for two, to its power supply, the hole that power cord accessible iron-clad was seted up is connected with coil 10. One end accessible bolted connection's of iron shell mode is connected with insulating handle 4, for example, sets up the screw hole at the tip of iron shell, sets up the screw at the tip of insulating handle 4, realizes connection between them through screwing the screw in the screw hole, and safe convenient operation electromagnetic retractor can be ensured to insulating handle 4. In addition, a sealing member is provided between the end of the right end of the iron case and the iron core 9 for sealing the coil 10 and ensuring safe operation.
In the embodiment of the present invention, the fixing tube 5 may be made of polyether sulfone Plastic (PES) having high heat resistance and toughness, for example, may be formed of spherical polyether sulfone plastic, so that the fixing tube 5 is heat-resistant and durable. In an embodiment of the present invention, the lubricating member 7 may be an iron wire. The iron wires may be uniformly arranged in the radial direction of the fixing tube 5, and the number may be set as desired, for example, 6 to 10 iron wires or the like may be provided. Specifically, a through hole is formed at the lower end of the fixed pipe 5, one end of the iron wire is fixed at the lower end through the through hole, and the other end of the iron wire is bent to go around the end surface of the upper end and fixed at the upper end of the fixed pipe 5. The bending degree of the iron wire can be ensured to be smooth and flat. Because set up many iron wires on the radial direction of fixed pipe, at sheathed tube slip in-process, the coefficient of friction between 5 shells of reduction fixed pipe that can show and the intraductal wall of cover. In one example, the coefficient of friction between the stationary tube and the sleeve may be in the range of 0.04 to 0.05. In addition, to further reduce the friction coefficient, a lubricating paint may be applied to the outer surface of the fixed pipe 5.
In the embodiment of the present invention, the follower 8 may be connected to the fixed pipe 5 through a connection member, the connection member may include a baffle plate and a connection rod, the baffle plate is connected to the upper end of the fixed pipe 5 and movably connected to the connection rod, one end of the connection rod passes through the baffle plate to be connected to the follower, and the other end of the connection rod is connected to the connection joint. Specifically, the baffle may be bonded in the upper end opening of the fixing tube 5 by an adhesive means. The connecting rod can be a bolt, a through hole is formed in the baffle, and the connecting rod penetrates through the through hole to be connected with the follower 8. In one embodiment, the connection between the connecting rod and the follower may be made by a wire, one end of which is fixed to the connecting rod by a metal sleeve having a threaded hole, and the other end of which is formed in a hook shape to hook the follower 8.
In an embodiment of the invention, the follower 8 may be shaped to slide inside the sleeve, such as a cylinder, sphere, etc., in a preferred example the follower 8 is a cylinder with a conical head. The electromagnetic retractor of the embodiment of the invention generates a magnetic field after being electrified, a magnetic force is formed between the magnetic field and the follower 8, and the magnitude of the magnetic force is related to the intensity of the magnetic field and the distance D between the retractor and the follower 8.
According to one embodiment of the invention, the magnetic force of the electromagnetic retractor and the mass of the follower 8 are arranged such that when the distance D is the thickness of the sleeve or slightly exceeds the thickness of the sleeve, the magnetic force is the same as the gravity of the follower 8, so that the follower 8 moves in a floating manner inside the sleeve, or the pressure of the follower 8 against the inner wall of the sleeve is very small, so that friction is reduced. Preferably, the magnetic force is greatest when the distance D is slightly greater than the thickness of the sleeve and the retractor is facing the follower 8, but in actual use, the retractor will lead the follower 8 by a small distance so that the magnetic force in the direction of gravity equals the gravity force, so that the follower 8 will not engage the inner wall of the sleeve to cause friction, and the position of the retractor can be adjusted manually to reduce the magnetic force to achieve the floating state.
Furthermore, in order to enable smooth sliding of the follower 8 within the sleeve, the diameter of the follower 8 at the maximum position may satisfy a certain relationship with the inner diameter of the sleeve. Since the sleeve material expands with heat and contracts with cold at the temperature of the working environment, so that the inner diameter changes slightly, when the inner diameter of the sleeve is actually determined, the minimum of the inner diameters measured at the two extreme temperatures of the working temperature can be taken, for example, when the working temperature is-15 degrees to 40 degrees, the inner diameter R1 of the sleeve at-15 degrees and the inner diameter R2 of the sleeve at 40 degrees are measured, so that the inner diameter of the sleeve is the smaller min (R1, R2) of the two. In one example, the relationship between the diameter at the maximum position of the follower 8 and the inner diameter of the sleeve is: r < min (R1, R2), thereby ensuring smooth penetration. Further, the relationship between the diameter at the maximum position of the follower 8 and the inner diameter of the sleeve may be: r ═ k × min (R1, R2), k < 1; preferably, k is 0.98-0.99, so that the diameter of the follower 8 at the maximum position is substantially flush with the inner diameter of the sleeve, thereby avoiding impact force caused by oscillation of the follower 8 in the sleeve.
In one example, the piece to be threaded may be a pigtail. In the case of the pigtail, as shown in fig. 3, the connection terminal is a disk 11 fitted to the lower end of the fixed tube, and the disk 11 is formed with a plurality of catching grooves 12 for fixing the terminal of the pigtail. In this case, one end of the connecting rod passes through the back plate and is connected to the follower 8, and the other end is connected to the connector so that the connector is telescopically movable within the fixed pipe 5. However, since the iron wire is bent into the inside of the fixing tube 5 through the through hole of the lower end of the fixing tube 5, the bent portion in the inside of the fixing tube 5 forms a stopper which prevents the coupling joint from further moving forward. Since the connector can be extended and retracted in the fixing tube 5, when the pigtail connector is inserted into the card slot 12, the pigtail connector can be stably inserted into the card slot by pulling the connector forward. The number of slots 12 is not particularly limited by the present invention and may be set accordingly for a fixed tube size, in the present example, 4 slots are shown. Due to the fact that the plurality of clamping grooves are formed, threading can be conducted on the plurality of tail fibers simultaneously, and working efficiency is improved.
In addition, in order to further ensure the stability of connection, the tail fiber connector can be fixed on the clamping groove through a flange connector. Each clamping groove interface corresponds to one flange joint and is used for reinforcing connection between the tail fiber and the fixing device, so that the traction process is firmer.
In another embodiment of the invention, the member to be worn is a mesh wire. In the case of a mesh wire, the connection joint is a mesh wire joint and may be adhesively bonded inside the lower end of the fixed pipe 5. In this case, one end of the connecting rod abuts against the flap and the other end passes through the flap to be connected to the follower, i.e. the connecting rod is not connected to the cable connector.
To sum up, the casing threading device provided by the embodiment of the invention can regulate the casing process of the tail fiber by fixing the joint of the piece to be threaded on the fixer and then providing stable and reliable traction force by means of the electromagnetic tractor adopting the coil to wind the iron core to drive the fixer to pass through the casing to complete threading operation, so that the threading work becomes simple and easy, and the condition that the tail fiber is clamped in the casing to cause the damage of the tail fiber during casing threading is avoided.
The above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A casing threading device is characterized by comprising an electromagnetic tractor and a fixer, wherein the electromagnetic tractor comprises a traction part and an insulating handle, the traction part comprises an iron core and an iron shell wound with a coil, the left end of the iron shell is connected with the insulating handle, the right end of the iron shell is provided with an accommodating space for accommodating the coil and the iron core, and the two ends of the coil are respectively connected with a power line so as to be powered by an external power supply device; the fixer comprises a follower, a fixed pipe and a connecting joint, wherein the follower is made of ferrous materials and is connected with the upper end of the fixed pipe, the connecting joint is arranged inside the lower end of the fixed pipe, the fixed pipe is provided with a plurality of lubricating pieces along the radial direction so as to reduce the friction coefficient between the fixed pipe and the sleeve pipe, and the connecting joint is provided with an interface matched with the joint of the piece to be penetrated; when threading is carried out, the electrified electromagnetic tractor is placed on the outer side of the sleeve and sucks the follower in the sleeve, and the traction part of the electromagnetic tractor slides along the length direction of the sleeve by operating the insulating handle, so that the follower is pulled to slide along the sleeve under the action of magnetic force, and the piece to be threaded is driven to penetrate through the sleeve;
the follower is connected with the fixed pipe through a connecting piece, the connecting piece comprises a baffle plate and a connecting rod, the baffle plate is connected with the upper end of the fixed pipe, one end of the connecting rod penetrates through the baffle plate to be connected with the follower, and the other end of the connecting rod is connected with the connecting joint;
the piece to be penetrated is a tail fiber; the connecting joint is a disc matched with the lower end of the fixed pipe, and a plurality of clamping grooves for fixing the joints of the tail fibers are formed in the disc;
the lubricating piece is made of iron wires; a through hole is formed at the lower end of the fixed pipe, one end of the iron wire is bent into the fixed pipe through the through hole and fixed at the lower end of the fixed pipe, the other end of the iron wire is bent to bypass the end surface of the upper end and fixed at the upper end of the fixed pipe, and a stopping part for preventing the connecting joint from continuously moving forwards is formed at the bent part in the fixed pipe;
the diameter R at the maximum position of the follower and the inner diameter of the sleeve satisfy the following relation:
R＝k*min(R1，R2)，k＝0.98～0.99；
where R1 and R2 are the inside diameters of the casing measured at the two extremes of the operating temperature, respectively.
2. The casing threader of claim 1, further comprising a flanged joint for securing a joint of the pigtail in the slot.
3. The casing threader of claim 1, wherein an outer surface of the stationary tube is painted with a lubricating paint; the friction coefficient between the fixed pipe and the sleeve is within the range of 0.04-0.05.
4. The casing threader of claim 1, wherein a sealing member is provided between an end of a right end of the iron case and the iron core for sealing the coil.
5. The cannula threader of claim 1, wherein the stationary tube is made of polyethersulfone plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852851.1A CN110596844B (en) | 2019-09-10 | 2019-09-10 | Casing threading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852851.1A CN110596844B (en) | 2019-09-10 | 2019-09-10 | Casing threading device |
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| Publication Number | Publication Date |
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| CN110596844A CN110596844A (en) | 2019-12-20 |
| CN110596844B true CN110596844B (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910852851.1A Active CN110596844B (en) | 2019-09-10 | 2019-09-10 | Casing threading device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433323B (en) * | 2020-11-05 | 2021-08-06 | 国网山东省电力公司乳山市供电公司 | Threading device for tail fiber sleeve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01244413A (en) * | 1988-03-25 | 1989-09-28 | Nippon Steel Weld Prod & Eng Co Ltd | Method for inserting linear body into pipe |
| CN201430377Y (en) * | 2009-06-16 | 2010-03-24 | 上海宝钢设备检修有限公司 | Drawing-in tool for electric cable |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100839462B1 (en) * | 2008-03-11 | 2008-06-19 | (주) 노브컴 | Optical fiber installation system using magnetic field and installation method thereby |
| CN102654626A (en) * | 2012-04-28 | 2012-09-05 | 成都鑫三洋科技发展有限公司 | Electromagnetic cable guiding device |
| CN208571460U (en) * | 2018-07-20 | 2019-03-01 | 天津二建水电安装工程有限公司 | A kind of cable threader |
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2019
- 2019-09-10 CN CN201910852851.1A patent/CN110596844B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01244413A (en) * | 1988-03-25 | 1989-09-28 | Nippon Steel Weld Prod & Eng Co Ltd | Method for inserting linear body into pipe |
| CN201430377Y (en) * | 2009-06-16 | 2010-03-24 | 上海宝钢设备检修有限公司 | Drawing-in tool for electric cable |
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| CN110596844A (en) | 2019-12-20 |
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