Foaming insulation bus cable

Abstract

The invention, which relates to the technical field of the cable, discloses a foaming insulated bus cable comprising a plurality of cable cores. An inner hole is formed in the side edge of the cable core, a plurality of protection layers are connected to the exterior of the cable core, and the plurality of protection layers are respectively a shielding layer, a damping layer, a heat insulation layer and a water barrier filling layer from inside to outside. Each cable core is wrapped by the foaming insulating sheath, the foaming insulating sheath provides an additional insulating layer, current leakage and electrical interference are prevented, the shielding layer is filled with the stainless steel wire woven material and used for shielding electromagnetic interference (EMI), the cable is protected against the influence of an external electromagnetic field, the damping layer is filled with the rubber material, and the damping layer is filled with the rubber material and used for shielding the electromagnetic interference (EMI) and protecting the cable against the influence of an external electromagnetic field. The heat insulation layer is filled with the mineral wool material and used for insulating heat and keeping the performance of the cable in a high-temperature environment, and the water barrier filling layer is coated with the waterproof sealant to prevent water permeation and ensure the waterproof performance of the cable.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a foamed insulated bus cable. Background Art

[0002] Foam insulated bus cable is a specially designed cable with various properties that make it suitable for a variety of application scenarios. In automated control systems, this cable can be used to transmit control signals. Due to its shielding layer and shock-absorbing layer, it can reduce electromagnetic interference and resist mechanical shock. A large number of electronic devices are used in automobiles. This cable can be used to transmit sensor signals, engine control unit (ECU) signals, etc., while resisting vibration and temperature changes during vehicle operation. In building wiring, this cable can be used in smart building systems such as security systems, lighting controls, etc. Its waterproof and heat-insulating properties make it suitable for use in harsh environments. Due to its light weight and high temperature resistance, this cable may be suitable for the aerospace field for transmitting critical control and communication signals.

[0003] The Chinese patent authorization announcement number is CN111403091 B, and the name is a composite cable, including a cable outer protective layer, the cable outer protective layer has an installation cavity, a middle partition is arranged in the installation cavity, the middle partition divides the entire installation cavity into an air storage cavity at the upper end and a core wire installation cavity at the bottom, the air storage cavity is provided with more than one sealing part along the length direction of the cable, the more than one sealing part divides the air storage cavity into more than one sealing cavity, the more than one sealing cavity is full of gas and makes the middle partition bulge toward one side of the core wire installation cavity, and more than one supporting part is equidistantly arranged on the bottom surface of the core wire installation cavity; the cable of the present invention is mainly used underground, can effectively resist shearing and extrusion force and be used for rapid fire extinguishing in case of spontaneous combustion, greatly increasing the safety and service life of underground cables;

[0004] The disadvantages of the above scheme are that although the above scheme can ensure the safety of the cable, the cable is prone to wear during use. Long-term ultraviolet radiation, temperature changes, chemical corrosion or biological erosion (such as rodent gnawing) may cause aging and wear of the cable outer material. The above cable is not easy to repair and the difficulty in disassembly may require the use of special tools or equipment, or require more manpower to complete the disassembly work, thereby increasing the technical problem of maintenance cost. Summary of the invention

[0005] The object of the present invention is to provide a foamed insulated bus cable to solve the technical problems in the prior art that the cable is easily worn during use, and that long-term ultraviolet radiation, temperature changes, chemical corrosion or biological erosion (such as rodent gnawing) may cause aging and wear of the cable outer material, and the above-mentioned cable is not easy to repair and difficult to disassemble, which may require the use of special tools or equipment, or require more manpower to complete the disassembly work, thereby increasing the maintenance cost.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A foamed insulated bus cable comprises a plurality of cable cores;

[0008] An inner hole is opened on the side of the cable core, and a plurality of protective layers are connected to the outside of the cable core, and the plurality of protective layers are respectively a shielding layer, a shock absorbing layer, a heat insulating layer and a water barrier filling layer from the inside to the outside; a plurality of protective shells are arranged outside the protective layer, and a filling block is connected between two of the protective shells, and a plug-in rod is connected to the filling block, and a plug-in mechanism is connected between every two of the protective shells;

[0009] A fastening mechanism is connected between the two groups of protective shells, and the fastening mechanism includes two groups of anti-slip sleeves and two groups of fastening rings. A plurality of connecting blocks are connected between each group of anti-slip sleeves and fastening rings, and each group of anti-slip sleeves and fastening rings is provided with two. The two anti-slip sleeves are connected to the protective shells, and the fastening rings are connected to the anti-slip sleeves. A locking mechanism is connected between the fastening rings.

[0010] As a further solution of the present invention: each cable core is wrapped with a foamed insulating sheath.

[0011] As a further solution of the present invention: the shielding layer is filled with stainless steel wire braided material.

[0012] As a further solution of the present invention: the shock absorbing layer is filled with rubber material.

[0013] As a further solution of the present invention: the interior of the thermal insulation layer is filled with mineral wool material.

[0014] As a further solution of the present invention: a waterproof sealant is applied on the water barrier filling layer.

[0015] As a further solution of the present invention: the filling block is an arc-shaped structure.

[0016] As a further solution of the present invention: the plug-in mechanism includes a plug-in block, which is connected to the end of the protective shell, and a plug-in hole is provided at the end of the protective shell away from the plug-in block, and a fixed block and a sliding block are connected to the end of the plug-in block away from the protective shell, a spring is connected between the fixed block and the sliding block, a sliding rod is connected to the sliding block, and an extrusion rod is connected to the end of the sliding rod away from the sliding block, a sliding groove cooperating with the extrusion rod is provided on the protective shell, and an extrusion head is connected to the sliding block.

[0017] As a further solution of the present invention: the anti-slip sleeve is a rubber sleeve.

[0018] As a further solution of the present invention: the locking mechanism includes a plurality of plug-in plates, the plurality of plug-in plates are respectively connected to the fastening ring, bolts are connected between the plug-in plates, and the ends of the bolts are all connected to limit heads.

[0019] Beneficial effects of the present invention:

[0020] 1. Each cable core of the present invention is wrapped with a foamed insulating sheath, which provides an additional insulating layer to help prevent current leakage and electrical interference, thereby improving the safety and reliability of the cable. The foamed material usually has a lower dielectric constant, which helps to reduce the transmission loss of the signal in the cable and improve the signal transmission quality. The shielding layer is filled with stainless steel wire braided material for electromagnetic interference (EMI) shielding to protect the cable from external electromagnetic fields. The shock absorbing layer is filled with rubber material to provide protection against mechanical shock and vibration. The thermal insulation layer is filled with mineral wool material for thermal insulation to maintain the performance of the cable in high temperature environments. The water barrier filling layer is coated with a waterproof sealant to prevent moisture penetration and ensure the waterproof performance of the cable.

[0021] 2. The plug-in block of the present invention is connected to the end of the protective shell, and a plug-in hole is provided at the end away from the plug-in block. By inserting the plug-in block into the plug-in hole at the end of the protective shell, the plug-in block is squeezed during plugging, pushing the sliding block to move, and the sliding block squeezes the spring. The extrusion rod cooperates with the slide groove on the protective shell. When the extrusion head slides into the plug-in hole, the extrusion head presses against the edge, and the spring rebounds, so that the extrusion head is plugged into the plug-in hole and limited. If the two protective shells need to be separated, the extrusion rod pushes the sliding block to move the extrusion head out of the plug-in hole, and then the two protective shells are disassembled and separated, which is convenient for disassembly to repair the internal cables.

[0022] 3. In the present invention, a filling block is connected between the two protective shells. When the protective shells are connected, there may still be some gaps. The filling block is driven by the plug-in rod to be inserted between the two protective shells. The arc structure of the filling block can better fit the internal structure to fill the gap. The anti-slip sleeve is put on the cable, the fastening rings are separated, the anti-slip sleeve is clamped, and the two plug-in plates are connected by bolts. The cable is fixed and stable by the limit head to ensure the stability of the cable and prevent it from sliding. The arc structure of the filling block can better fit the internal structure, improve the sealing performance, and prevent moisture, dust and other pollutants from entering the cable. The flexibly designed filling block and anti-slip sleeve can be adjusted according to the size of the cable and are suitable for cables of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 yes Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 3 is a side view of the fastening mechanism of the present invention;

[0027] Figure 4 It is a schematic diagram of the locking mechanism structure in the present invention.

[0028] In the figure: 1. protective shell; 2. filling block; 3. plug-in rod; 5. water barrier filling layer; 6. heat insulation layer; 7. shock absorption layer; 8. shielding layer; 9. cable core; 10. foam insulation sheath; 11. inner hole; 12. plug-in block; 13. fixed block; 14. sliding block; 15. spring; 16. extrusion head; 17. sliding rod; 18. extrusion rod; 19. anti-slip sleeve; 20. fastening ring; 21. connecting block; 22. plug-in board; 23. bolt. DETAILED DESCRIPTION

[0029] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0030] like Figure 1-Figure 4As shown, a foamed insulated bus cable comprises a plurality of cable cores 9, each of which is wrapped with a foamed insulating sheath 10, an inner hole 11 is opened on the side of the cable core 9, and a plurality of protective layers are connected to the outside of the cable core 9, and the plurality of protective layers are respectively a shielding layer 8, a shock absorbing layer 7, a heat insulating layer 6 and a water barrier filling layer 5 from the inside to the outside, the shielding layer 8 is filled with a stainless steel wire braided material, the shock absorbing layer 7 is filled with a rubber material, the heat insulating layer 6 is filled with a mineral wool material, and the water barrier filling layer 5 is coated with a waterproof sealant;

[0031] A plurality of protective shells 1 are provided outside the protective layer, a filling block 2 is connected between two of the protective shells 1, the filling block 2 is an arc-shaped structure, a plug-in rod 3 is connected to the filling block 2, a plug-in mechanism is connected between every two of the protective shells 1, the plug-in mechanism comprises a plug-in block 12, the plug-in block 12 is connected to the end of the protective shell 1, a plug-in hole is provided at one end of the protective shell 1 away from the plug-in block 12, a fixed block 13 and a sliding block 14 are connected to one end of the plug-in block 12 away from the protective shell 1, a spring 15 is connected between the fixed block 13 and the sliding block 14, a sliding rod 17 is connected to the sliding block 14, an end of the sliding rod 17 away from the sliding block 14 is connected to an extrusion rod 18, a sliding groove cooperating with the extrusion rod 18 is provided on the protective shell 1, and an extrusion head 16 is connected to the sliding block 14;

[0032] A fastening mechanism is connected between the two groups of protective shells 1, and the fastening mechanism includes two groups of anti-slip sleeves 19 and two groups of fastening rings 20. A plurality of connecting blocks 21 are connected between each group of the anti-slip sleeves 19 and the fastening rings 20. Each group of the anti-slip sleeves 19 and the fastening rings 20 is provided with two. The two anti-slip sleeves 19 are connected to the protective shells 1. The anti-slip sleeves 19 are rubber sleeves. The fastening rings 20 are connected to the anti-slip sleeves 19. A locking mechanism is connected between the fastening rings 20. The locking mechanism includes a plurality of plug-in plates 22. The plurality of plug-in plates 22 are respectively connected to the fastening rings 20. Bolts 23 are connected between the plug-in plates 22, and the ends of the bolts 23 are connected to limiting heads.

[0033] Working principle of the present invention: the cable is composed of a plurality of cable cores 9, each of which has an inner hole 11 for accommodating conductive materials to achieve transmission of electrical signals. Each cable core 9 is wrapped with a foamed insulating sheath 10. The foamed insulating sheath 10 provides an additional insulating layer to help prevent current leakage and electrical interference, thereby improving the safety and reliability of the cable. The foamed material generally has a lower dielectric constant, which helps to reduce the transmission loss of the signal in the cable and improve the signal transmission quality. The shielding layer 8 is filled with a stainless steel wire braided material for electromagnetic interference (EMI) shielding to protect the cable from external electromagnetic fields. The shock absorbing layer 7 is filled with a rubber material to provide protection against mechanical shock and vibration. The thermal insulation layer 6 is filled with a mineral wool material for thermal insulation to maintain the performance of the cable in a high temperature environment. The water barrier filling layer 5 is coated with a waterproof sealant to prevent moisture penetration and ensure the waterproof performance of the cable. The protective shell 1 has a plurality of protective shells 1 arranged outside the protective layer to provide additional physical protection for the cable.

[0034] The plug-in block 12 is connected to the end of the protective shell 1, and a plug-in hole is provided at one end away from the plug-in block 12. By inserting the plug-in block 12 into the plug-in hole at the end of the protective shell 1, the plug-in block 12 is squeezed during plugging, pushing the sliding block 14 to move, and the sliding block 14 squeezes the spring 15. The squeezing rod 18 cooperates with the slide groove on the protective shell 1. When the squeezing head 16 slides into the inside of the plug-in hole, the squeezing head 16 presses against the edge, and the spring 15 rebounds, so that the squeezing head 16 is plugged into the inside of the plug-in hole to limit the position. If the two protective shells 1 need to be separated, the squeezing rod 18 pushes the sliding block 14, and the squeezing head 16 is removed from the plug-in hole, and then the two protective shells 1 are disassembled and separated;

[0035] A filling block 2 is connected between the two protective shells 1. When the protective shells 1 are connected, there may still be some gaps. The filling block 2 is driven by the plug-in rod 3 to be inserted between the two protective shells 1. The arc structure of the filling block 2 can better fit the internal structure and fill the gap.

[0036] A plug-in mechanism is connected between each two protective shells 1 to achieve fixation and connection between the protective shells 1. The anti-slip sleeve 19 is put on the cable, the fastening ring 20 is separated, the anti-slip sleeve 19 is clamped, and then the two plug-in boards 22 are connected by bolts 23. The fixation and stability of the cable are ensured by the limit head to ensure the stability of the cable and prevent it from sliding. The design of the entire cable takes into account the requirements of electromagnetic compatibility, mechanical protection, heat insulation, waterproofing and easy connection. The reliability and durability of the cable are ensured through multi-level protection and sophisticated mechanical structure.

[0037] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot 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 coverage of the present invention.

Claims

1. A foamed insulated bus cable, comprising a plurality of cable cores (9); characterized in that: An inner hole (11) is provided on the side of the cable core (9); a plurality of protective layers are connected to the outside of the cable core (9); the plurality of protective layers are respectively a shielding layer (8), a shock absorbing layer (7), a heat insulating layer (6) and a water barrier filling layer (5) from the inside to the outside; a plurality of protective shells (1) are provided outside the protective layer; a filling block (2) is connected between two of the protective shells (1); a plug-in rod (3) is connected to the filling block (2); and a plug-in mechanism is connected between every two of the protective shells (1); A fastening mechanism is connected between the two groups of protective shells (1), and the fastening mechanism comprises two groups of anti-slip sleeves (19) and two groups of fastening rings (20). A plurality of connecting blocks (21) are connected between each group of anti-slip sleeves (19) and fastening rings (20). Each group of anti-slip sleeves (19) and fastening rings (20) is provided with two. The two anti-slip sleeves (19) are connected to the protective shells (1), and the fastening rings (20) are connected to the anti-slip sleeves (19). A locking mechanism is connected between the fastening rings (20).

2. A foam insulated bus cable according to claim 1, characterized in that: Each cable core (9) is wrapped with a foamed insulating sheath (10) on the outside.

3. A foam insulated bus cable according to claim 1, characterized in that: The shielding layer (8) is filled with stainless steel wire braided material.

4. The foam insulated bus cable according to claim 1, characterized in that: The shock-absorbing layer (7) is filled with rubber material.

5. The foam insulated bus cable according to claim 1, characterized in that: The interior of the heat insulation layer (6) is filled with mineral wool material.

6. The foam insulated bus cable according to claim 1, characterized in that: The water barrier filling layer (5) is coated with a waterproof sealant.

7. The foam insulated bus cable according to claim 1, characterized in that: The filling block (2) is an arc-shaped structure.

8. The foam insulated bus cable according to claim 1, characterized in that: The plug-in mechanism comprises a plug-in block (12), wherein the plug-in block (12) is connected to the end of the protective shell (1), and a plug-in hole is provided at one end of the protective shell (1) away from the plug-in block (12), and a fixed block (13) and a sliding block (14) are connected to one end of the plug-in block (12) away from the protective shell (1), and a spring (15) is connected between the fixed block (13) and the sliding block (14), and a sliding rod (17) is connected to the sliding block (14), and an extrusion rod (18) is connected to one end of the sliding rod (17) away from the sliding block (14), and a sliding groove cooperating with the extrusion rod (18) is provided on the protective shell (1), and an extrusion head (16) is connected to the sliding block (14).

9. The foam insulated bus cable according to claim 1, characterized in that: The anti-slip sleeve (19) is a rubber sleeve.

10. The foam insulated bus cable according to claim 1, characterized in that: The locking mechanism comprises a plurality of plug-in plates (22), the plurality of plug-in plates (22) being respectively connected to the fastening ring (20), bolts (23) being connected between the plug-in plates (22), and the ends of the bolts (23) being connected to limit heads.

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