Insulated control cable for rail transit

Abstract

The utility model discloses an insulated control cable for rail transit, which relates to the technical field of cables, solves the technical problem of insulation fracture, and comprises a lead, the outer surface of the lead is wound with filling glue, the outer surface of the filling glue is provided with a flame-retardant layer, the outer surface of the flame-retardant layer is provided with a heat-resistant layer, and the outer surface of the heat-resistant layer is provided with an insulating layer. The outer surface of the heat-resistant layer is coated with a waterproof layer, the outer surface of the waterproof layer is coated with an insulating layer, the outer surface of the insulating layer is coated with a rubber layer, and the outer surface of the rubber layer is coated with a corrosion-resistant layer; the insulating layer is matched with the rubber layer to play a role in insulation and electric leakage prevention, the reinforcing wires, the supporting frame and the twisted wires are added with the reinforcing strips to play a role in improving the strength of the wire, the condition that the wire is pulled and broken is avoided as much as possible, and the hardness and the insulating capacity of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an insulated control cable for rail transportation. Background Art

[0002] Control cables are PVC insulated and PVC sheathed control cables suitable for industrial and mining enterprises, energy and transportation departments, and for control and protection lines with AC rated voltages below 450 / 750 volts. Insulated control cables are often required in rail transit.

[0003] However, the existing rail transit control cables have poor insulation effects, and are prone to guide breakage during long-term use and pulling, which affects the insulation and service life of the device. To this end, based on the technical defects, we have proposed an insulated rail transit control cable that can solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an insulated rail transit control cable to solve the following technical problems:

[0005] The insulation effect of rail transit control cables is not good, and the guide is prone to breakage during long-term use and pulling, which affects the insulation and service life of the device.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An insulated rail transit control cable comprises a conductor, the outer surface of the conductor is wrapped with a filling rubber, the outer surface of the filling rubber is provided with a flame retardant layer, the outer surface of the flame retardant layer is provided with a heat-resistant layer, the outer surface of the heat-resistant layer is wrapped with a waterproof layer, the outer surface of the waterproof layer is coated with an insulating layer, the outer surface of the insulating layer is wrapped with a rubber layer, and the outer surface of the rubber layer is coated with a corrosion-resistant layer.

[0008] As a further solution of the present invention: a reinforcement strip is fixedly installed on the outer surface of the insulating layer, and the reinforcement strip is nested in the rubber layer.

[0009] As a further solution of the present invention: there are multiple reinforcement strips, and the multiple reinforcement strips are circumferentially distributed on the outer surface of the insulation layer, and the cross-section of the reinforcement strip is semicircular.

[0010] As a further solution of the present invention: the waterproof layer is filled with multiple support frames and multiple twisted wires.

[0011] As a further solution of the present invention: the support frame and the twisted wires are staggered and distributed circumferentially on the outer surface of the heat-resistant layer.

[0012] As a further solution of the present invention: the filling glue is filled with reinforcing wire.

[0013] As a further solution of the present invention: the cross section of the support frame is in an inverted X shape.

[0014] The beneficial effects of the present invention are as follows: the insulating layer cooperates with the rubber layer in the present invention to play the role of insulation and leakage prevention; the heat-resistant layer cooperates with the flame-retardant layer to avoid the influence of high temperature on the signal transmission of the conductor as much as possible; the reinforcing wire, the support frame and the twisted wire are added with the reinforcement strip to increase the strength of the conductor, and to avoid the situation where the conductor is pulled and broken as much as possible, which is beneficial to improving the hardness of the device and improving the insulation capacity of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic cross-sectional view of an insulated rail transit control cable of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of output A.

[0018] In the figure: 1. Wire; 2. Reinforcement wire; 3. Filling glue; 4. Flame retardant layer; 5. Heat-resistant layer; 6. Support frame; 7. Twisted wire; 8. Waterproof layer; 9. Insulation layer; 10. Rubber layer; 11. Reinforcement strip; 12. Corrosion-resistant layer. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1

[0021] See also Figure 1 and Figure 2As shown, the utility model is an insulated control cable for rail transit, including a conductor 1, the outer surface of the conductor 1 is wrapped with a filling glue 3, the filling glue 3 is used to protect the conductor 1, the outer surface of the filling glue 3 is provided with a flame retardant layer 4, the flame retardant layer 4 plays the role of flame retardant protection of the conductor 1, the outer surface of the flame retardant layer 4 is wrapped with a heat-resistant layer 5, the heat-resistant layer 5 plays a role of protection and heat resistance, which is convenient for protecting the conductor 1, the outer surface of the heat-resistant layer 5 is wrapped with a waterproof layer 8, the waterproof layer 8 plays a role of waterproof and flame retardant, the outer surface of the waterproof layer 8 is coated with an insulating layer 9, the insulating layer 9 plays the role of insulating and protecting the conductor 1, the outer surface of the insulating layer 9 is wrapped with a rubber layer 10, the outer surface of the rubber layer 10 is coated with a corrosion-resistant layer 12, the corrosion-resistant layer 12 plays a role of acid and alkali corrosion resistance, which is beneficial to protecting the device, improving the corrosion resistance of the device, extending the service life of the device, and improving the insulation of the device.

[0022] A reinforcement strip 11 is fixedly installed on the outer surface of the insulating layer 9. The reinforcement strip 11 is nested in the rubber layer 10. The rubber layer 10 plays a role in buffering and protecting the wire 1, which facilitates insulation protection and is beneficial to improving the insulation protection capability of the device. There are multiple reinforcement strips 11, and multiple reinforcement strips 11 are distributed circumferentially on the outer surface of the insulating layer 9. The cross-section of the reinforcement strip 11 is semicircular. The reinforcement strip 11 plays a role in protecting the wire 1, which is beneficial to improving the reinforcement and wear resistance of the device.

[0023] The waterproof layer 8 is filled with multiple support frames 6 and multiple twisted wires 7. The cross-section of the support frame 6 is an inverted X shape. The support frame 6 supports the insulating layer 9. The support frame 6 cooperates with the twisted wire 7 to reinforce and stabilize the waterproof layer 8 and increase the hardness of the conductor 1.

[0024] The support frame 6 and the twisted wires 7 are staggered and distributed circumferentially on the outer surface of the heat-resistant layer 5 .

[0025] The filling glue 3 is filled with reinforcing wires 2, which are installed in the filling glue 3. The reinforcing wires 2 increase the hardness of the filling glue 3, which is beneficial to improving the reinforcement ability of the device.

[0026] The working principle of the present invention is as follows: first, the filling glue 3 is placed around the conductor 1, and then the reinforcing wire 2 is inserted into the filling glue 3, and then the outer surface of the filling glue 3 is covered with a flame retardant layer 4, and then the outer surface of the flame retardant layer 4 is wrapped with a heat-resistant layer 5, and then a waterproof layer 8 is installed on the outer surface of the heat-resistant layer 5, and a support frame 6 and a twisted wire 7 are installed in the waterproof layer 8, and then the outer surface of the insulating layer 9 is fixedly installed with a reinforcing strip 11 and a rubber layer 10, and the outer surface of the seed rubber layer 10 is fixedly installed with a corrosion-resistant layer 12.

[0027] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. An insulated rail transit control cable, comprising a conductor (1), characterized in that: The outer surface of the wire (1) is wrapped with a filling glue (3), the outer surface of the filling glue (3) is provided with a flame retardant layer (4), the outer surface of the flame retardant layer (4) is provided with a heat-resistant layer (5), the outer surface of the heat-resistant layer (5) is wrapped with a waterproof layer (8), the outer surface of the waterproof layer (8) is coated with an insulating layer (9), the outer surface of the insulating layer (9) is wrapped with a rubber layer (10), and the outer surface of the rubber layer (10) is coated with a corrosion-resistant layer (12).

2. The insulated rail transit control cable according to claim 1, characterized in that: A reinforcement strip (11) is fixedly mounted on the outer surface of the insulating layer (9), and the reinforcement strip (11) is nested and mounted in the rubber layer (10).

3. The insulated rail transit control cable according to claim 2, characterized in that: There are multiple reinforcement strips (11), and the multiple reinforcement strips (11) are circumferentially distributed on the outer surface of the insulating layer (9). The cross section of the reinforcement strips (11) is semicircular.

4. The insulated rail transit control cable according to claim 1, characterized in that: The waterproof layer (8) is filled with a plurality of support frames (6) and a plurality of twisted wires (7).

5. The insulated rail transit control cable according to claim 4, characterized in that: The support frame (6) and the twisted wires (7) are staggered and circumferentially distributed on the outer surface of the heat-resistant layer (5).

6. The insulated rail transit control cable according to claim 1, characterized in that: The filling glue (3) is filled with reinforcing wire (2).

7. The insulated rail transit control cable according to claim 5, characterized in that: The cross section of the support frame (6) is in an inverted X shape.

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