CN2798385Y - Underground connector casing for signal cable - Google Patents
Underground connector casing for signal cable Download PDFInfo
- Publication number
- CN2798385Y CN2798385Y CN 200520016041 CN200520016041U CN2798385Y CN 2798385 Y CN2798385 Y CN 2798385Y CN 200520016041 CN200520016041 CN 200520016041 CN 200520016041 U CN200520016041 U CN 200520016041U CN 2798385 Y CN2798385 Y CN 2798385Y
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- CN
- China
- Prior art keywords
- cable
- sealing
- sleeve pipe
- main sleeve
- joint 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an underground connector casing for a signal cable, which comprises a cable and a main sleeve tube. The connecting of the cable is arranged in the main sleeve tube; the outer side of both ends of the main sleeve tube are fixedly connected with auxiliary sleeve tubes; the inner side of the both ends of the main sleeve tube are hermetically fixed with sealing sleeves; each sealing sleeve is provided with two sealing surfaces, and each sealing surface is provided with a separate fastener for fastening; one sealing surface of each sealing sleeve is sealed and connected with the main sleeve tube, and the other sealing surface of each sealing sleeve is sealed and connected with the cable; cable fixing disks and cable fixing racks are arranged inside the auxiliary sleeve tubes; the cable fixing disks are fixed on the main sleeve tube; the cable fixing racks are arranged on the cable fixing disks; the cable is fixed on each cable fixing rack; the outer sides of the auxiliary sleeve tubes which are arrangd on the both ends are connected with sealing joints; sealing filling glue is filled in the main sleeve tube and the auxiliary sleeve tubes. The underground connector casing for a signal cable has the advantages of high sealing performance, short construction time and convenient use.
Description
Technical field
The utility model relates to a kind of non-maintaining cable underground joint box, particularly relates to the underground joint box of signal transmission passage.
Background technology
Develop rapidly along with automatic control technology, particularly the system of railway electrical maintenance in recent years is to non-maintaining, few reform of safeguarding development, the application of railway signal new technology, new material, more and more higher to the requirement of signal transmission passage, non-maintaining has been indispensable specification requirement.Traditional signal cable adopts the Ground Service Plug box to continue, because " cell breath " in the Ground Service Plug chamber makes its sealing property low, and often suffer artificial and natural destruction, can't accomplish non-maintaining.Again because the unreasonable sealing difficulty of box design in the early signal ground, insulating cement poor performance, so that the use that has been eliminated are not inflated in signal cable inside.Recent signal underground joint box sealing means is imperfection still, and especially the construct mechanical strength at initial stage of mechanical strength is relatively poor, and is lower with Communication ray cable-joint protector box comparison with standard, requirement that can not the adaptive technique development.
The utility model content
At the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of sealing property and higher, the non-maintaining signal cable underground joint box of mechanical strength.
The technical solution adopted in the utility model is: a kind of signal cable underground joint box, comprise cable, main sleeve pipe, the junction of described cable is arranged in the main sleeve pipe, the outside, two ends at described main sleeve pipe is fixedly connected with secondary sleeve pipe, inner seal is fixed with sealing shroud at the two ends of described main sleeve pipe, each sealing is with two sealing surfaces, each sealing surface has independent securing member fastening, a sealing surface of sealing shroud is connected sealing with main sleeve pipe, another sealing surface is connected with described cable seal, in described secondary sleeve pipe, be provided with cable fixed disk and cable fixed mount, described cable fixed disk is fixed on the main sleeve pipe, described cable fixed mount is installed on the cable fixed disk, described cable is fixed on the cable fixed mount, secondary sleeve pipe at described two ends is externally connected with seal nipple, is perfused with sealing pouring adhesive in described main sleeve pipe and secondary sleeve pipe.
Described cable fixed mount can adjustablely be installed on the cable fixed disk, and described cable is fixed on the cable fixed mount by the larynx hoop.
Between described secondary sleeve pipe and seal nipple, can be provided with the reducing ring, the two ends of this reducing ring respectively with secondary sleeve pipe and seal nipple by being threaded.
Described sealing shroud internal diameter can be 12-44mm.
Sealing surface between described sealing shroud and the main sleeve pipe can be tightly connected by screw, and the sealing surface between sealing shroud and the described cable is tightly connected by the larynx hoop.
Described cable can comprise heart yearn, internal shield, aluminium sheath, plastics inner sheath, steel band, plastics oversheath from inside to outside, and the steel band of described cable joint is by the crimping mode, links with the steel band crimping to connect.
The internal shield of described cable joint can connect by the overcoat gauze screen, and fixing with the nylon cable tie binding.
Described cable can comprise heart yearn, plastic-aluminum combined layer, plastics inner sheath, steel band, plastics oversheath from inside to outside, the cable aluminum plastic composite bed is connected by being socketed in heart yearn and aluminium sheath between the plastic-aluminum combined layer gauze screen that continues, continuing at aluminium sheath is equipped with the conductive metal sheet that has thorn between gauze screen and the plastic-aluminum combined layer, and the thorn on this conductive metal sheet is towards plastic-aluminum combined layer.
Described conductive metal sheet can be copper sheet or galvanized sheet iron.
Described sealing pouring adhesive can be the polyurethane sealing pouring adhesive that expands slightly and have viscosity higher.
Signal cable underground joint box of the present utility model owing to changed the mode that is tightly connected of traditional cable underground joint box, adopts multiple mode to seal, promptly by by main sleeve pipe, sealing shroud, form first sealant; Form second sealant by sealing pouring adhesive in the main sleeve pipe; Form enhancing and auxiliary seal layer by sealing pouring adhesive in secondary sleeve pipe cable sealed joint and the secondary sleeve pipe, thereby sealing property is heightened, and the novel seal cover of the utility model employing, sealing is overlapped each sealing surface independent securing member, avoided the shortcoming of several seals in the past, made sealing very reliable.
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model;
Fig. 2 is a sealing shroud structural representation of the present utility model;
Fig. 3 cuts structural representation open for cable of the present utility model;
Fig. 4 is the utility model signal ground lower contact steel band crimping schematic diagram;
Fig. 5 is the utility model signal ground lower contact composite sheath aluminium foil schematic diagram that continues.
Embodiment
As shown in Figure 1, signal cable underground joint box of the present utility model, comprise main sleeve pipe 1, secondary sleeve pipe 2, cable 13, cable fixed disk 4, cable fixed mount 5, reducing ring 8, the joint of cable 13 is arranged in the main sleeve pipe 1, the outside, two ends of main sleeve pipe 1 is by the fixedly connected secondary sleeve pipe 2 of screw thread, the opposite side of secondary sleeve pipe 2 is connected with reducing ring 8 by screw thread, the opposite side of reducing ring 8 is connected with seal nipple 9 by screw thread, inner seal is fixed with sealing shroud 3 at the two ends of main sleeve pipe 1, the one side of sealing shroud 3 is connected sealing with main sleeve pipe 1, another side is sealedly connected and fixed by larynx hoop 6 and cable 13, is perfused with sealing pouring adhesive 22 in main sleeve pipe 1, is perfused with sealing pouring adhesive 23 in secondary sleeve pipe 3.Also can not need reducing ring 8 directly to be connected between secondary sleeve pipe 2 and the seal nipple 9.
Cable fixed disk 4 and cable fixed mount 5 are arranged in the secondary sleeve pipe 2, are fixed together with main sleeve pipe 1, and the A face of sealing shroud 3 is clipped between cable fixed disk 4 and the main sleeve pipe 1, be fixed together with main sleeve pipe 1,
Cable fixed mount 5 is according to different adjustable being installed on the cable fixed disk 4 of cable size, and described cable 13 is crossed larynx hoop 7 and is fixed on the cable fixed mount 5.
The internal diameter of the sealing shroud 3 in the utility model can be 12-44mm, and as shown in Figure 2, cable gland 3 has two sealing surfaces, respectively with the sealing of joining of cables with different diameters 13 and main cartridge 1, each sealing surface has independent securing member, and its fastening force makes sealing very reliable perpendicular to sealing surface.
The sealing force of described two sealing surfaces is achieved in that the fastening force sealing that the 1. sealing between the sealing shroud 3 and main cartridge 1 is produced by last 6 bolts of plane, garden A on the sealing shroud 3.2. the sealing between sealing shroud 3 and the cables with different diameters is according to cable 13 diameter the sealing shroud 3 usefulness pocket knives of Fig. 2 a shape to be cut into Fig. 2 c shape easily, its barrel shape sealing surface B internal diameter is slightly less than cable size, and add the larynx hoop in its outside or nylon cable tie fastening, make itself and cable seal.Described sealing shroud two directions have the barrel shape cover of different-diameter, but use according to cable size difference twocouese.
Shown in Fig. 1,3,4, cable 13 of the present utility model comprises heart yearn 30, internal shield 31, aluminium sheath 14, plastics inner sheath 32, steel band 15, plastics oversheath from inside to outside, heart yearn 30 connects by heart yearn joint 19, internal shield 31 connects by overcoat gauze screen 18, overcoat gauze screen 18 is fixing by nylon cable tie 20 bindings, and aluminium sheath passes through aluminium sheath gauze screen 16 for 14 layers and connects, and is fixing by larynx hoop 21, steel band 15 is connected and fixed with steel band crimping junction button 17 by the crimping mode.
As shown in Figure 5, for the aluminium foil connection of railway combined sheath, described cable 13 comprises heart yearn 30, plastic-aluminum combined layer 36, plastics inner sheath 37 from inside to outside.Plastic-aluminum combined layer 36 is connected by socket aluminium sheath combined shielding net 16 between heart yearn 30 is with plastic-aluminum combined layer 36, continue at aluminium sheath the conductive metal sheet 38 that has thorn is installed between gauze screen 16 and the aluminium plastic membrane 36, thorn on this conductive metal sheet 38 is towards aluminium plastic membrane 36, and conductive metal sheet 38 can be copper sheet or galvanized sheet iron.This mode has overcome because the aluminium foil of composite-sheathed cable is thinner, and it is again that plastics inner restrictive coating with its outside is fused into one that there is the plastic film insulation on its two sides, be difficult in the construction plastics are removed, and don't the technological deficiency of damage aluminium foil, convenient construction.The utility model compared with prior art, the superiority that is had is as follows:
One, sealing property improves greatly
1, employing is multi-sealed: form first sealant by main cartridge, cable gland; Form second sealant by sealing pouring adhesive in the main cartridge; By secondary box body, cable sealed joint 9. with secondary box body in sealing pouring adhesive form and strengthen and the auxiliary seal layer.
2, the improvement of sealing means
The sealing means of present several cable underground joint boxs, the fastening force that its common shortcoming one is a direction will seal different two or more sealing surfaces, cause each sealing surface pressure inequality, especially extremely unreliable two different directions sealing surface intersection sealings; The 2nd, sealing surface pressure is big inadequately.The utility model has adopted the novel seal cover, and sealing is overlapped each sealing surface independent securing member, has avoided the shortcoming of present several seals, makes sealing very reliable.
3, adopt novel sealing pouring adhesive, both strengthened sealing property, shortened the engineering time again.
The utility model sealing pouring adhesive adopts the polyurethane sealing pouring adhesive, and it is slight expansion when solidifying except the advantage of polyurethane itself for it, and general sealing pouring adhesive is to shrink slightly or do not shrink substantially.Utilizing it to expand slightly makes sealing property better, this sealing pouring adhesive has certain viscosity simultaneously, as long as filled under the prerequisite of operable time and can screw a lid on satisfying, shortened the engineering time, and existing products need wait tens minutes and treat the glue face to fall after rise after polishing glue face again.
Two, mechanical strength height has particularly improved the mechanical strength at construction initial stage.
The mechanical strength at existing signal underground joint box construction initial stage a little less than because its structure just can have bigger intensity after will waiting fluid sealant or expansion adhesive curing.The utility model has been set up cable sealed joint, has improved the bonding strength and the sealing at construction initial stage, and then has made easy construction, just has bigger mechanical strength after promptly construction finishes, so backfill soil buried cable ditch immediately.Three, after continued and adopt cable steel band fixture with screw-clamped in the cable steel band present cable steel band of the improvement two ends of continuing, the centre connected with stay bolt again.The utility model adopts the crimping of special steel strip Press Plier, and it is more reliable that steel band is connected, and reduced volume.
Four, reduced volume
Because the improvement that seal and steel band continue reduces the box inner volume, so this cable-joint protector box overall volume is smaller.
Five, the internal shield improvement of technology that continues
Continuing of existing internal shield is to adopt the crimping mode, and little gauze screen fortress is to very inconvenience of construction between crimp rings and the internal shield.The utility model utilizes channelizing line earlier little gauze screen and internal shield to be tightened, and the technology in that tighten with nylon cable tie its outside again satisfies standard fully through type approval test shielding factor and contact resistance, makes construction greatly convenient.
Six, the improvement that continues of composite-sheathed cable aluminium foil
Existing technology is with instrument the aluminum foil outer layer plastics to be removed the big gauze screen of back cover, tightens with the larynx hoop again.Because the aluminium foil of composite-sheathed cable is thinner, it is again that plastic sheath layer with its outside is fused into one that there is the plastic film insulation on its two sides, be difficult in the construction plastics are removed, and don't the damage aluminium foil.The utility model adopts following method:
1. the plastic sheath of aluminium foil and its adhesion is vertically cut 5 ~ 6 cuttves along periphery, the long 20mm of every cutter.
2. aluminium foil is connected plastic sheath and lever up gently about 60 degree, do not surpass 90 degree.
3. big gauze screen is put between cable core and the aluminium foil.
4. the aluminium foil composite bed is turned back, barbed copper sheet or galvanized sheet (stabbing aluminium foil), plug according to cable cutter number, is put a barbed copper sheet (or iron plate) per two between cutting between big gauze screen and aluminium foil.
5. tighten at plastic-aluminum combined layer outside cover larynx hoop.Schematic diagram is seen Fig. 4.
Through facts have proved that adopting the method to continue satisfies specification requirement fully.
Seven, the utility model technical indicator has been compared following raising with the prior art index, has arrived and surpassed the standard of communications optical cable connector box:
(1) test stone of normal temperature sealing is brought up to 100Kpa by 35～70Kpa.
(2) test stone of elevated-temperature seal is brought up to 60Kpa by 35Kpa, and the time extended to 96 hours by 72 hours.
(3) static load is impacted to inflate in the checkbox and is brought up to 60Kpa by 35Kpa.
(4) normal temperature impacts to inflate in the checkbox and brings up to 60Kpa by 35Kpa.
(5) inflation is brought up to 60Kpa by 35Kpa in the temperature cycles checkbox.
(6) inflation is brought up to 60Kpa by 35Kpa in the vibration test box.
(7) inflation is brought up to 60Kpa by 35Kpa in the bend test box, and increases the test of " crooked tension force 500N should be able to be born in cable and box body junction, 5 minutes duration ".
(8) in the axial tension test box inflation by 35Kpa bring up to 60Kpa, pulling force is brought up to 1000N by 700N.
The utility model and the contrast of existing technical performance, see the following form 1:
| Sequence number | Project | The perfusion of cast iron housing insulating cement | Existing underground joint box | The utility model underground | |
| 1 | Mounting means | On the | Underground | Underground | |
| 2 | Sealing property | Difference | Generally | Good | |
| 3 | Hot strength | Difference | Higher | High | |
| 4 | Resist difference variation | Difference | | Good | |
| 5 | Magnetic shield performance | | Good | Good | |
| 6 | Dielectric strength | | High | High | |
| 7 | The heart yearn connection reliability | Generally | | Good | |
| 8 | Weight | Heavy | Lighter | Gently | |
| 9 | Volume | Greatly | In | | |
| 10 | The easy construction degree | Generally | Generally | Simpler and easy | |
| 11 | Emergency first-aid repair | Slowly | Generally | Hurry up | |
| 12 | The scope of application | Generally | Wide | Wide |
Table 1
The utility model and existing product sealing property and the contrast of intensity technical indicator, see the following form 2:
| Technical indicator | Existing underground joint box | The utility model underground joint box |
| Normal temperature leakage test air pressure | 35～70±2kPa | 100±5kPa |
| Elevated-temperature seal test air pressure and retention time | 35 ± | 60 ± 5kPa 96 hours |
| Box body internal gas pressure during the static load test | 35±2kPa | 60±5kPa |
| Box body internal gas pressure during the normal temperature shock test | 35±2kPa | 60±5kPa |
| Box body internal gas pressure during temperature cycling test | 35±2kPa | 60±5kPa |
| The product that has does not have this index | ||
| Box body internal gas pressure during vibration test | 35±2kPa | 60±5kPa |
| Box body internal gas pressure during bend test | 35±2kPa | 60±5kPa |
| Crooked tension force should be able to be born in cable and box body junction | There is not this index | 500N |
| Box body internal gas pressure pulling force during the axial tension test | 35±2kPa 700N | 60±5kPa 1000N |
Table 2
Claims (10)
1, a kind of signal cable underground joint box, comprise cable, main sleeve pipe, the junction of described cable is arranged in the main sleeve pipe, it is characterized in that: the outside, two ends at described main sleeve pipe is fixedly connected with secondary sleeve pipe, inner seal is fixed with sealing shroud at the two ends of described main sleeve pipe, each sealing is with two sealing surfaces, each sealing surface has independent securing member fastening, a sealing surface of sealing shroud is connected sealing with main sleeve pipe, another sealing surface is connected with described cable seal, in described secondary sleeve pipe, be provided with cable fixed disk and cable fixed mount, described cable fixed disk is fixed on the main sleeve pipe, and described cable fixed mount is installed on the cable fixed disk, and described cable is fixed on the cable fixed mount, secondary sleeve pipe at described two ends is externally connected with seal nipple, is perfused with sealing pouring adhesive in described main sleeve pipe and secondary sleeve pipe.
2, signal cable underground joint box according to claim 1 is characterized in that: described cable fixed mount is adjustable to be installed on the cable fixed disk, and described cable is fixed on the cable fixed mount by the larynx hoop.
3, signal cable underground joint box according to claim 1 is characterized in that: between described secondary sleeve pipe and seal nipple, be provided with the reducing ring, the two ends of this reducing ring respectively with secondary sleeve pipe and seal nipple by being threaded.
4, signal cable underground joint box according to claim 1 is characterized in that: described sealing shroud internal diameter is 12-44mm.
5, signal cable underground joint box according to claim 1 is characterized in that: the sealing surface between described sealing shroud and the main sleeve pipe is tightly connected by screw, and the sealing surface between sealing shroud and the described cable is tightly connected by the larynx hoop.
6, signal cable underground joint box according to claim 1, it is characterized in that: described cable comprises heart yearn, internal shield, aluminium sheath, plastics inner sheath, steel band, plastics oversheath from inside to outside, the steel band of described cable joint is by the crimping mode, links with the steel band crimping to connect.
7, signal cable underground joint box according to claim 6 is characterized in that: the internal shield of described cable joint connects by the overcoat gauze screen, and fixing with the nylon cable tie binding.
8, signal cable underground joint box according to claim 1, it is characterized in that: described cable comprises heart yearn, plastic-aluminum combined layer, plastics inner sheath, steel band, plastics oversheath from inside to outside, the cable aluminum plastic composite bed is connected by being socketed in heart yearn and aluminium sheath between the plastic-aluminum combined layer gauze screen that continues, continuing at aluminium sheath is equipped with the conductive metal sheet that has thorn between gauze screen and the plastic-aluminum combined layer, and the thorn on this conductive metal sheet is towards plastic-aluminum combined layer.
9, signal cable underground joint box according to claim 8 is characterized in that: described conductive metal sheet is copper sheet or galvanized sheet iron.
10, signal cable underground joint box according to claim 1 is characterized in that: the polyurethane sealing pouring adhesive of described sealing pouring adhesive for expanding and have viscosity higher slightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016041 CN2798385Y (en) | 2005-04-14 | 2005-04-14 | Underground connector casing for signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016041 CN2798385Y (en) | 2005-04-14 | 2005-04-14 | Underground connector casing for signal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798385Y true CN2798385Y (en) | 2006-07-19 |
Family
ID=36869633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520016041 Expired - Fee Related CN2798385Y (en) | 2005-04-14 | 2005-04-14 | Underground connector casing for signal cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2798385Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409440B (en) * | 2008-07-30 | 2011-04-20 | 刘新田 | Gluing cable connector box |
| CN103618280A (en) * | 2013-11-28 | 2014-03-05 | 沈阳兴华航空电器有限责任公司 | Oil filled type insulating sealing cable bunching structure |
| CN104078795A (en) * | 2014-05-08 | 2014-10-01 | 珠海市泰德企业有限公司 | Underground sealing connection device of earthquake monitoring equipment and assembling method thereof |
| CN112332174A (en) * | 2020-11-19 | 2021-02-05 | 中国电子科技集团公司第二十九研究所 | Cable shielding layer grounding structure and method considering electromagnetic shielding and lightweight design |
| CN112670911A (en) * | 2020-12-23 | 2021-04-16 | 长园电力技术有限公司 | Connecting method and connecting structure of aluminum sheath cable and metal pipe |
| CN113042865A (en) * | 2021-03-12 | 2021-06-29 | 长园电力技术有限公司 | Transition pipe welding system and process |
-
2005
- 2005-04-14 CN CN 200520016041 patent/CN2798385Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409440B (en) * | 2008-07-30 | 2011-04-20 | 刘新田 | Gluing cable connector box |
| CN103618280A (en) * | 2013-11-28 | 2014-03-05 | 沈阳兴华航空电器有限责任公司 | Oil filled type insulating sealing cable bunching structure |
| CN103618280B (en) * | 2013-11-28 | 2016-04-27 | 沈阳兴华航空电器有限责任公司 | A kind of filling type insulated enclosure beamline construction |
| CN104078795A (en) * | 2014-05-08 | 2014-10-01 | 珠海市泰德企业有限公司 | Underground sealing connection device of earthquake monitoring equipment and assembling method thereof |
| CN104078795B (en) * | 2014-05-08 | 2017-01-25 | 珠海市泰德企业有限公司 | Underground sealing connection device of earthquake monitoring equipment and assembling method thereof |
| CN112332174A (en) * | 2020-11-19 | 2021-02-05 | 中国电子科技集团公司第二十九研究所 | Cable shielding layer grounding structure and method considering electromagnetic shielding and lightweight design |
| CN112670911A (en) * | 2020-12-23 | 2021-04-16 | 长园电力技术有限公司 | Connecting method and connecting structure of aluminum sheath cable and metal pipe |
| CN113042865A (en) * | 2021-03-12 | 2021-06-29 | 长园电力技术有限公司 | Transition pipe welding system and process |
| CN113042865B (en) * | 2021-03-12 | 2022-04-22 | 长园电力技术有限公司 | Transition pipe welding system and process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060719 Termination date: 20140414 |