CN207587432U - Elevator-dedicated video transmitting device - Google Patents
Elevator-dedicated video transmitting device Download PDFInfo
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- CN207587432U CN207587432U CN201721870376.3U CN201721870376U CN207587432U CN 207587432 U CN207587432 U CN 207587432U CN 201721870376 U CN201721870376 U CN 201721870376U CN 207587432 U CN207587432 U CN 207587432U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Insulated Conductors (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The utility model discloses a kind of elevator-dedicated video transmitting devices, including monitoring camera, monitoring camera is connected with the first paired line transmission device through the first coaxial cable, first paired line transmission device is connected with the second paired line transmission device through twisted-pair cable, and the second paired line transmission device is connected with video display apparatus through the second coaxial cable；The twisted-pair cable includes core-wire layer, inner insulating layer, external shielding layer and external insulation layer successively from the inside to the outside, and the core-wire layer includes four pairs of twisted-pair feeders, and four pairs of twisted-pair feeders are isolated through crossing skeleton, and calcium carbonate powder is filled in the core wire lamellar spacing outside twisted-pair feeder.The video transmission quality of the utility model is high, and the twisted-pair cable shield effectiveness of the utility model is good, the small and fireproofing and heat resistant performance that influences each other between multipair twisted-pair feeder is good.
Description
Technical field
The utility model is related to a kind of video frequency transmitter, particularly a kind of elevator for belonging to elevator accessories field is special to be regarded
Frequency transmitting device.
Background technology
Monitoring camera is essential component in elevator, and the image in elevator is passed back the video of monitoring room by it in real time
Display, the transmission of existing monitor video generally use coaxial cable, and coaxial cable cost is higher, video transmission quality
Not steady and audible enough, twisted-pair cable is used to elevator industry since its is at low cost gradually, and twisted-pair feeder is a kind of synthesis
Most common transmission medium in wiring installation, is made of two copper conductors with insulating protective layer, and edge are thoroughly done away with two
Copper conductor is twisted together mutually by certain density, and the electric wave that each conducting wire radiates in the transmission can be sent out on another single line
The electric wave gone out is offset, and effectively reduces the degree of signal interference, in actual use, twisted-pair cable is wrapped together by multipair twisted-pair feeder
In an insulated cable casing, but there is no isolating device between each pair of twisted-pair feeder, can have a certain impact between each other,
General twisted-pair power cable only wraps up multipair twisted-pair feeder by sheath, and fireproofing and heat resistant performance and insulation effect are poor, do not have in sheath
There is filler so that twisted-pair feeder roundness is poor, and antioxygen index is low；Information is ravesdropping and reduces external electromagnetic and does in order to prevent
The entrance disturbed, twisted-pair feeder are arranged to the more of protected type, and existing shielding means is increase between external insulation sleeve and twisted-pair feeder
Add one layer of metal screen layer, but shield effectiveness is undesirable.Therefore, there are video transmission qualities for existing elevator video frequency transmitter
It can influence each other between difference, the shield effectiveness difference of twisted-pair cable and multipair twisted-pair feeder, the fireproofing and heat resistant of twisted-pair cable
Can be poor the shortcomings that.
Utility model content
The purpose of the utility model is to provide a kind of elevator-dedicated video transmitting devices.The video of the utility model passes
Transmission quality is high, and the twisted-pair cable shield effectiveness of the utility model is good, influence each other small and fireproofing and heat resistant between multipair twisted-pair feeder
Performance is good.
The technical solution of the utility model：Elevator-dedicated video transmitting device, including monitoring camera, monitoring camera warp
First coaxial cable is connected with the first paired line transmission device, and the first paired line transmission device is connected with the second multiple twin through twisted-pair cable
Line transmitter, the second paired line transmission device are connected with video display apparatus through the second coaxial cable；The twisted-pair cable is by interior
To outside successively include core-wire layer, inner insulating layer, external shielding layer and external insulation layer, the core-wire layer include four pairs of twisted-pair feeders, four
Twisted-pair feeder is isolated through crossing skeleton, filled with calcium carbonate powder, the twisted-pair feeder packet in the core wire lamellar spacing outside twisted-pair feeder
Two copper wire cores are included, rubber insulation sleeve, two copper wire lines for being coated with rubber insulation sleeve are coated with outside two copper wire cores
Core mutually twists, and two copper wire cores mutually twisted are coated with internal shield, and glass fibers are additionally provided between internal shield and copper wire core
Dimension rope.
In aforementioned elevator-dedicated video transmitting device, ground wire is equipped in the external shielding layer.
In aforementioned elevator-dedicated video transmitting device, the glass cord is twisted with the fingers by 7 bursts of glass fibre friendships.
In aforementioned elevator-dedicated video transmitting device, the external insulation layer is waterproof polyvinyl chloride adhesive tape layer.
In aforementioned elevator-dedicated video transmitting device, the inner insulating layer is teflon seal layer.
In aforementioned elevator-dedicated video transmitting device, the external shielding layer is copper foil layer.
In aforementioned elevator-dedicated video transmitting device, the internal shield is aluminium foil layer.
Compared with prior art, twisted-pair cable is used between the monitoring camera and video display apparatus of the utility model
Connection, video transmission quality is high and holistic cost is low, and the twisted-pair cable of the utility model has inside and outside two shielded layers,
In, internal shield is arranged on the outside of two copper wire cores mutually twisted, and external shielding layer is arranged on the inside and outside insulating layer of twisted-pair cable
Between, there is dual shield effect, the entrance that information was ravesdropping and reduced external electromagnetic interference can be better protected from, meanwhile, it is double
Strand cable has inside and outside two insulating layers, and inner insulating layer is teflon seal layer, and external insulation layer is waterproof polyvinyl chloride
Adhesive tape layer, can play better insulation effect, filled with calcium carbonate powder, Paris white in the core wire lamellar spacing outside twisted-pair feeder
The filling at end plays humidification to twisted-pair cable, and twisted-pair cable is made to have better roundness, tensile strength and counter-bending
Intensity, and calcium carbonate powder can play the role of fireproofing and heat resistant, improve the fireproofing and heat resistant performance of the utility model, inner shield
Glass cord is additionally provided between layer and copper wire core, makes twisted-pair feeder that there is better roundness, while but also twisted-pair feeder has
There is higher antioxygen index, service life is longer.To sum up, the video transmission quality of the utility model is high and holistic cost is low, this
The twisted-pair cable shield effectiveness of utility model is good, insulation performance is high, fireproofing and heat resistant performance is good, structural strength is high, service life
It is long.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of twisted-pair cable；
Fig. 3 is the structure diagram of twisted-pair feeder；
Fig. 4 is the structure diagram of glass cord.
Label in attached drawing for：1- monitoring cameras, the first coaxial cables of 2-, the first paired line transmission devices of 3-, 4- multiple twins
Line cable, the second paired line transmission devices of 5-, the second coaxial cables of 6-, 7- video display apparatus, 8- core-wire layers, 9- inner insulating layers,
10- external shielding layers, 11- external insulation layers, 12- twisted-pair feeders, 13- crossing skeletons, 14- calcium carbonate powders, 15- copper wire cores, 16- rubbers
Glue insulation sleeve, 17- internal shields, 18- glass cords, 19- ground wires, 20- glass fibres.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples, but is not intended as to the utility model
The foundation of limitation.
Embodiment：Elevator-dedicated video transmitting device, structure as shown in Figures 1 to 4, including monitoring camera 1, monitoring camera
First 1 is connected with the first paired line transmission device 3 through the first coaxial cable 2, and the first paired line transmission device 3 is connected through twisted-pair cable 4
There is the second paired line transmission device 5, the second paired line transmission device 5 is connected with video display apparatus 7 through the second coaxial cable 6；It is described
Twisted-pair cable 4 includes core-wire layer 8, inner insulating layer 9, external shielding layer 10 and external insulation layer 11, the core successively from the inside to the outside
Line layer 8 includes four pairs of twisted-pair feeders 12, and four pairs of twisted-pair feeders 12 are isolated through crossing skeleton 13,8 gap of core-wire layer outside twisted-pair feeder 12
In filled with calcium carbonate powder 14, the twisted-pair feeder 12 includes two copper wire cores 15, is coated with outside two copper wire cores 15
Rubber insulation sleeve 16, two 15 phases of copper wire core for being coated with rubber insulation sleeve 16 twist, two 15 outsourcings of copper wire core mutually twisted
Internal shield 17 is covered with, glass cord 18 is additionally provided between internal shield 17 and copper wire core 15.
Ground wire 19 is equipped in the external shielding layer 10.
The glass cord 18 is handed over by 7 strands of glass fibres 20 and twisted with the fingers.
The external insulation layer 11 is waterproof polyvinyl chloride adhesive tape layer.
The inner insulating layer 9 is teflon seal layer.
The external shielding layer 10 is copper foil layer.
The internal shield 17 is aluminium foil layer.
Preferably, first paired line transmission device 3 and the second paired line transmission device 5 of the utility model are LH-D-PT electricity
Terraced dedicated twisted-pair transmitter, built-in voice module and wireless network module without providing power supply, have excellent anti-interference
Can, and signal can be used as to emit or receive and used, suitable for a plurality of types of elevator video monitoring occasions.
The operation principle of the utility model：Monitoring camera 1 monitors lift car in real time, the vision signal of shooting
Video display apparatus 7 is transmitted to through twisted-pair cable 4 to be shown, 4 both ends of twisted-pair cable are connected separately with the first twisted-pair feeder
3 and second paired line transmission device 5 of transmitter converts vision signal to be interfered with suppression common mode, makes image signal transmission more
Clearly.
It is connected between the monitoring camera 1 of the utility model and video display apparatus 7 using twisted-pair cable 4, video passes
Transmission quality is high and holistic cost is low, and the twisted-pair cable 4 of the utility model has inside and outside two shielded layers, wherein, internal shield
17 are arranged on two copper wire cores mutually twisted, 15 outside, external shielding layer 10 be arranged on twisted-pair cable 4 inside and outside insulating layer it
Between, there is dual shield effect, the entrance that information was ravesdropping and reduced external electromagnetic interference can be better protected from, meanwhile, multiple twin
Line cable 4 has inside and outside two insulating layers, and inner insulating layer 9 is teflon seal layer, and external insulation layer 11 is water resistant polyurea chloroethene
Alkene adhesive tape layer, can play better insulation effect, filled with calcium carbonate powder 14 in 8 gap of core-wire layer outside twisted-pair feeder 12,
The filling of calcium carbonate powder 14 plays humidification to twisted-pair cable 4, and twisted-pair cable 4 is made to have better roundness, tension
Intensity and flexural strength, and calcium carbonate powder 14 can play the role of fireproofing and heat resistant, improve the fire prevention of the utility model
Heat resistance is additionally provided with glass cord 18 between internal shield 17 and copper wire core 15, twisted-pair feeder 12 is made to have preferably circle
Whole degree, while but also twisted-pair feeder 12 has higher antioxygen index, service life is longer.To sum up, the video of the utility model
Transmission quality is high and holistic cost is low, and the twisted-pair cable shield effectiveness of the utility model is good, insulation performance is high, fireproofing and heat resistant
Energy is good, structural strength is high, service life is long.
Claims (7)
1. elevator-dedicated video transmitting device, it is characterised in that：Including monitoring camera (1), monitoring camera (1) is same through first
Shaft cable (2) is connected with the first paired line transmission device (3), and the first paired line transmission device (3) is connected with through twisted-pair cable (4)
Two paired line transmission devices (5), the second paired line transmission device (5) are connected with video display apparatus (7) through the second coaxial cable (6)；
The twisted-pair cable (4) includes core-wire layer (8), inner insulating layer (9), external shielding layer (10) and external insulation successively from the inside to the outside
Layer (11), the core-wire layer (8) include four pairs of twisted-pair feeders (12), and four pairs of twisted-pair feeders (12) are isolated through crossing skeleton (13), multiple twin
Include two copper wire lines filled with calcium carbonate powder (14), the twisted-pair feeder (12) in external core-wire layer (8) gap of line (12)
Core (15), two copper wire cores (15) are coated with rubber insulation sleeve (16), two copper for being coated with rubber insulation sleeve (16) outside
Wire core (15) mutually twists, and two copper wire cores (15) mutually twisted are coated with internal shield (17), internal shield (17) and copper wire
Glass cord (18) is additionally provided between core (15).
2. elevator-dedicated video transmitting device according to claim 1, it is characterised in that：It is set in the external shielding layer (10)
There is ground wire (19).
3. elevator-dedicated video transmitting device according to claim 1, it is characterised in that：The glass cord (18) by
7 bursts of glass fibres (20), which are handed over, twists with the fingers.
4. elevator-dedicated video transmitting device according to claim 1, it is characterised in that：The external insulation layer (11) is anti-
Water polyvinyl chloride rubber belt layer.
5. elevator-dedicated video transmitting device according to claim 1, it is characterised in that：The inner insulating layer (9) is poly-
Tetrafluoroethene sealant.
6. elevator-dedicated video transmitting device according to claim 1, it is characterised in that：The external shielding layer (10) is copper
Layers of foil.
7. elevator-dedicated video transmitting device according to claim 1, it is characterised in that：The internal shield (17) is aluminium
Layers of foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870376.3U CN207587432U (en) | 2017-12-28 | 2017-12-28 | Elevator-dedicated video transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870376.3U CN207587432U (en) | 2017-12-28 | 2017-12-28 | Elevator-dedicated video transmitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207587432U true CN207587432U (en) | 2018-07-06 |
Family
ID=62740202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721870376.3U Active CN207587432U (en) | 2017-12-28 | 2017-12-28 | Elevator-dedicated video transmitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207587432U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109230920A (en) * | 2018-10-25 | 2019-01-18 | 森赫电梯股份有限公司 | A kind of intelligent building calling elevator system |
| CN109935426A (en) * | 2019-03-01 | 2019-06-25 | 安徽天康集团数据线缆有限公司 | A kind of production method of six classes cable conductor |
-
2017
- 2017-12-28 CN CN201721870376.3U patent/CN207587432U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109230920A (en) * | 2018-10-25 | 2019-01-18 | 森赫电梯股份有限公司 | A kind of intelligent building calling elevator system |
| CN109935426A (en) * | 2019-03-01 | 2019-06-25 | 安徽天康集团数据线缆有限公司 | A kind of production method of six classes cable conductor |
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