Photoelectric flat cable
By designing a flat fiber optic cable and adopting a symmetrical structure of tensile rope and steel wire braided layer, the wear and fatigue problems of elevator cables under high tensile force were solved, thus improving the safety and stability of the elevator.
Patent Information
- Application Number
- CN202423323007.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing elevator cables are prone to wear and tensile deformation under long-term high-intensity tensile stress, and are also susceptible to fatigue damage during operation, affecting the safety and stability of the elevator.
The cable adopts a flat optical cable design, including tensile rope, secondary signal line, main signal line and steel wire braid layer. Through symmetrical structure and locking connection, the cable's stability and abrasion resistance under dynamic tension are ensured.
This improved the tensile strength and abrasion resistance of the cable, enhanced the stability and safety of elevator operation, and prevented safety accidents caused by various factors.
Smart Images
Figure CN223842647U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optoelectronic composite cables, specifically to an optoelectronic flat cable. Background Technology
[0002] Elevator cables, as a key component of elevator systems in modern high-rise buildings, bear the heavy responsibility of transmitting power and control signals. Their reliability and durability directly affect the safety and efficiency of elevator operation. During vertical ascent and descent, elevators rely on cable systems composed of steel wire ropes or synthetic fiber tapes to achieve stable movement. However, when elevators ascend or descend, especially at high speeds, enormous dynamic tensile forces are generated, which act directly on the elevator cables.
[0003] Prolonged exposure to high tensile forces can cause elevator cables to wear, deform, and even break, affecting not only the stability of elevator operation but also potentially leading to serious safety accidents. Furthermore, frequent starts, stops, and vibrations during elevator operation can exacerbate fatigue damage to the cable's internal structure, shortening its lifespan.
[0004] Currently, although some elevator cables on the market are made of high-strength materials, it is still difficult to completely avoid the aforementioned adverse effects under complex and variable operating environments. Therefore, developing an elevator cable that can efficiently resist dynamic tensile forces, is wear-resistant, and has good flexibility is of great significance for improving the overall safety and stability of elevator systems, and is also a technical problem that urgently needs to be solved in the current elevator technology field. Utility Model Content
[0005] The present invention aims to provide a flat optical cable to solve the problem that existing elevator cables are prone to wear and tensile deformation when subjected to high tensile forces for a long time.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a flat optical cable, comprising a sheath with a flat rectangular cross-section, two parallel tensile ropes inside the sheath, two parallel secondary signal lines between the two tensile ropes, and a main signal line between the two secondary signal lines. A steel wire braided layer is provided on the outer side of the sheath. The tensile ropes are steel wire ropes, and the steel wire braided layer is formed by ten steel wire ropes with a diameter of 1.5mm evenly woven together. An optical fiber is located in the middle of the main signal line, and a main line consisting of two 0.75 square millimeter cores twisted together is located on each side of the optical fiber. A first secondary line and a second secondary line are arranged parallel to each other within the secondary signal line. The first secondary line is located close to the main signal line and is composed of five 0.75 square millimeter cores twisted together, while the second secondary line is composed of four 0.75 square millimeter cores twisted together.
[0007] Preferably, as an improvement, the outer sides of the optical fiber and the main line are covered with PVC / D polyvinyl chloride to form an integral main insulation layer.
[0008] Preferably, as an improvement, the outer sides of the first and second sub-wires are covered with PVC / D polyvinyl chloride to form an integral sub-insulation layer.
[0009] Preferably, as an improvement, the optical fiber is a 2-square-meter optical fiber.
[0010] Preferably, as an improvement, the five cores in the first sub-line are twisted together and a PP tape filling layer is provided in the middle.
[0011] Preferably, as an improvement, locking buckles are provided at both ends of the flat cable, which press and fix the steel wire braided layer onto the sheath.
[0012] Preferably, as an improvement, the latch includes two latch plates hinged together, the free end of the latch plate is provided with a lock hole perpendicular to the hinge axis, a fastener is connected in the lock hole, and the middle of the latch plate is provided with multiple connecting holes parallel to the hinge axis.
[0013] The principle and advantages of this solution are as follows: In practical applications, a symmetrical structure is used to distribute two auxiliary signal lines and two tensile ropes on both sides of the main signal line, resulting in a more uniform mass distribution and smoother operation. The tensile ropes provide edge tensile strength on the outer side, using 1.5mm steel wire ropes to ensure the cable has sufficient tensile strength while remaining flexible. Ten 1.5mm diameter steel wire ropes are evenly woven on the outer side of the sheath to form a steel wire braided layer, further improving the overall tensile strength and abrasion resistance of the flat cable. The braiding method ensures that the steel wire braided layer has sufficient tensile and abrasion resistance, as well as sufficient flexibility. At the ends, a locking connection provides higher connection strength between the steel wire braided layer and the inner sheath, ensuring a stable connection between the steel wire braided layer and the inner sheath. The tension generated during elevator ascent or descent is borne by the steel wire braided layer and the tensile ropes, while maintaining cable flexibility. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model. Detailed Implementation
[0015] The following detailed description illustrates the specific implementation method:
[0016] The reference numerals in the accompanying drawings include: buckle plate 1, steel wire braided layer 2, sheath 3, main insulation layer 4, main wire 5, optical fiber 6, secondary insulation layer 7, first secondary wire 8, second secondary wire 9, lock hole 10, filler layer 11, and connection hole 12.
[0017] The basic implementation examples are as follows: Figure 1The image shows a flat optical cable, comprising a sheath 3 with a flat rectangular cross-section, the sheath 3 being made of an elastomer material. Inside the sheath 3 are two parallel tensile ropes, each made of 1.5mm thick steel wire. Between the two tensile ropes are two parallel secondary signal lines, and between the two secondary signal lines is a main signal line. The outer side of the sheath 3 has a steel wire braided layer 2, formed by ten uniformly woven 1.5mm diameter steel wires. A 2mm² optical fiber 6 is located in the middle of the main signal line. On the left and right sides of the optical fiber 6 are two main lines 5, each composed of two 0.75mm² cores twisted together. The optical fiber 6 and the main lines 5 are wrapped with a PVC / D polyvinyl chloride extruded main insulation layer 4 to form the main signal line. The secondary signal line includes a first secondary line 8 and a second secondary line 9 arranged side-by-side. The first secondary line 8 is positioned close to the main signal line and is composed of five 0.75 square millimeter wire cores twisted together. A PP tape filler layer 11 is provided in the middle of the twisted five wire cores in the first secondary line 8. The second secondary line 9 is composed of four 0.75 square millimeter wire cores twisted together. The outer sides of the first secondary line 8 and the second secondary line 9 are covered with PVC / D polyvinyl chloride to form an integral secondary insulation layer 7.
[0018] Both ends of the flat cable are equipped with locking buckles, which press and fix the steel wire braided layer 2 onto the sheath 3. The locking buckles include two buckle plates 1 hinged together. The free end of the buckle plate 1 is provided with a locking hole 10 perpendicular to the hinge axis. Bolts are connected in the locking hole 10 as fasteners. The middle of the buckle plate 1 is provided with three connecting holes 12 parallel to the hinge axis.
[0019] The specific implementation process is as follows: Fiber 6 and wire core are used as the photoelectric signal transmission cable for the elevator. The main insulation layer 4 and the secondary insulation layer 7 provide insulation protection. The sheath 3 provides further protection on the outside. Steel wire ropes are set on both sides of the sheath 3 as tensile ropes to improve the overall internal tensile strength of the photoelectric flat cable. The outer side of the sheath 3 is then woven with steel wire ropes to form a uniform steel wire braided layer 2. The steel wire braided layer 2 is fixed to the sheath 3 by locking buckles. During the elevator's operation, the tension generated when it rises or falls is first borne by the outer steel wire braided layer 2. The braiding method ensures that the steel wire braided layer 2 is flexible enough to adapt to the deformation of the cable during elevator operation. The steel wire braided layer 2 also improves the wear resistance of the surface layer of the photoelectric flat cable.
[0020] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A flat optical cable, characterized in that: The device includes a sheath with a flat, rectangular cross-section. Inside the sheath are two parallel tensile ropes, between which are two parallel secondary signal lines. Between the two secondary signal lines is a primary signal line. The outer side of the sheath has a steel wire braided layer. The tensile ropes are steel wire ropes, and the steel wire braided layer is formed by ten steel wire ropes with a diameter of 1.5 mm evenly woven together. An optical fiber is located in the middle of the primary signal line, and on each side of the optical fiber is a primary line consisting of two 0.75 square millimeter wire cores twisted together. Inside the secondary signal lines are a first secondary line and a second secondary line arranged side by side. The first secondary line is located close to the primary signal line and consists of five 0.75 square millimeter wire cores twisted together. The second secondary line consists of four 0.75 square millimeter wire cores twisted together.
2. The optical fiber flat cable according to claim 1, characterized in that: The optical fiber and the main line are covered with PVC / D polyvinyl chloride to form an integrated main insulation layer.
3. The optical fiber flat cable according to claim 2, characterized in that: The outer sides of the first and second sub-wires are covered with PVC / D polyvinyl chloride to form an integrated sub-insulation layer.
4. The optical fiber flat cable according to claim 3, characterized in that: The optical fiber is 2 square millimeters.
5. The optical fiber flat cable according to claim 4, characterized in that: The first sub-line has five strands twisted together with a PP tape filling layer in the middle.
6. The optical fiber flat cable according to claim 5, characterized in that: Both ends of the flat cable are equipped with locking clips, which press and fix the steel wire braided layer onto the sheath.
7. The optical fiber flat cable according to claim 6, characterized in that: The latch includes two latch plates hinged together. The free end of the latch plate has a lock hole perpendicular to the hinge axis, and a fastener is connected in the lock hole. The middle of the latch plate has multiple connecting holes parallel to the hinge axis.