Anti-frost slide wire device

Abstract

The invention relates to an anti-frost sliding contact wire device which comprises a sliding contact wire assembly, an electric heat tracing assembly and an electric control assembly. A seamless sliding contact line in the sliding contact line assembly is of an integrated flexible structure with multiple cores connected in parallel and is installed along the running path of the mobile device, and a current collector is attached to the conductive face of the seamless sliding contact line to achieve mobile power supply. An electric heat tracing band in the electric heat tracing assembly is attached to the surface of the seamless sliding contact line, a junction box is fixed to the end of the seamless sliding contact line, and the end of the electric heat tracing band is connected into the junction box to obtain power supply. An electric control box in the electric control assembly is electrically connected with the tensioner and the junction box respectively; the temperature sensor is attached between the electric tracing band and the seamless sliding contact line and used for measuring the temperature of the back face of the seamless sliding contact line and feeding back the temperature to the electric control box. A temperature threshold value is preset in the electric control box, when the temperature measured by the temperature sensor is lower than the threshold value, the electric control box switches on power supply of the electric tracing band, and when the temperature is higher than the threshold value, the electric control box switches off power supply, and intermittent heat tracing is achieved.

Description

Technical Field

[0001] This invention relates to the field of power transmission equipment technology, and more specifically to a frost-resistant sliding contact line device. Background Technology

[0002] Sliding conductor rails are an important component in the field of power transmission. With their unique structure and excellent performance, they are widely used in automated production lines, warehousing and logistics, rail transportation, port machinery, and other fields to supply power to mobile equipment. Based on their structure, sliding conductor rails are mainly divided into several types, including single-pole sliding conductor rails, multi-pole tube sliding conductor rails, seamless sliding conductor rails, and steel-bodied sliding conductor rails. All types of sliding conductor rails have open conductive surfaces, and power supply is achieved through the contact and sliding between the current collector and the open conductive surface.

[0003] In normal temperature applications, conductor rails function normally. However, in special applications with low temperature and high humidity, such as inside cold storage or outdoors in frost-covered conditions during winter, the open conductive surfaces of the conductor rails may frost due to the coupling effect of temperature and humidity. This can lead to poor contact between the open conductive surfaces and the current collector, resulting in unstable and continuous power transmission. Seamless conductor rails offer the most compact size and can be wound and bent, providing excellent space adaptability. However, for applications in frost-covered environments, it is necessary to consider efficiently solving the frost problem on the conductive surfaces without compromising their structural compactness.

[0004] In existing related technologies, such as patent document (CN203135192U, De-icing and Anti-freezing sliding line): this technology achieves anti-freezing by movably connecting a U-shaped groove to the sliding line body and using electric heating tape and temperature sensor. However, it has three key problems: ① The heated body and the sliding line body are movably connected, resulting in poor fit stability and low heat conduction efficiency; ② It is not designed for the compact structure and winding characteristics of seamless sliding lines, and is only suitable for rigid sliding lines, resulting in poor space adaptability; ③ It lacks precise control logic for temperature thresholds and relies solely on sensors for simple start and stop, which can easily lead to overheating or incomplete anti-freezing. Patent document (CN212559167U, Moisture-proof sliding contact line for vehicles): This technology achieves moisture protection by installing a heating tape on the top of the sliding contact line body, but the core defects are: ① The design goal is "moisture and dust protection", and it is not optimized for "frost" scenarios. The heating power and temperature control cannot meet the requirements of environments below freezing point; ② The heating tape adopts a continuous heating mode without intermittent control, resulting in high energy consumption and easy to cause additional thermal impact on the surrounding environment (such as materials in cold storage); ③ The sliding contact line body is a rigid structure, which cannot adapt to the flexible winding requirements of seamless sliding contact lines, thus limiting the applicable scenarios.

[0005] In summary, there is an urgent need for a dedicated anti-frost device for seamless sliding contact lines. Summary of the Invention

[0006] The purpose of this invention is to solve the problem of stable power transmission in seamless sliding contact lines under frost conditions, and to provide a frost-resistant sliding contact line device that uses electric heat tracing to provide automatic intermittent heat tracing along the entire length of the seamless sliding contact line, so that the temperature of the open conductive surface is always maintained above the freezing point, enabling continuous and stable power transmission.

[0007] To achieve the above objectives, the technical solution of the present invention is: a frost-resistant sliding contact line device, comprising a sliding contact line assembly, an electric heat tracing assembly, and an electrical control assembly; the sliding contact line assembly includes a seamless sliding contact line, a clamp, a tensioner, and a current collector; the seamless sliding contact line is a multi-core parallel integrated flexible structure, installed along the running path of the mobile device, and fixed by the clamp and tensioner; the current collector is attached to the conductive surface of the seamless sliding contact line to achieve mobile power supply; the electric heat tracing assembly includes an electric heat tracing tape and a junction box; the electric heat tracing tape is attached to the surface of the seamless sliding contact line, and the junction box is fixed to the seamless sliding contact line. The end of the line and the end of the electric heating tape are connected to a junction box to obtain power. The electrical control assembly includes an electrical control box and a temperature sensor. The electrical control box is electrically connected to the tensioner and the junction box respectively, and is used to provide independent power supply for the seamless sliding contact line and the electric heating tape. The temperature sensor is attached between the electric heating tape and the seamless sliding contact line, and is used to measure the temperature on the back of the seamless sliding contact line and feed it back to the electrical control box. The electrical control box has a preset temperature threshold. When the temperature measured by the temperature sensor is lower than the threshold, the electrical control box connects the power supply to the electric heating tape. When the temperature is higher than the threshold, the electrical control box disconnects the power supply to achieve intermittent heating.

[0008] Furthermore, the seamless sliding contact line has multiple parallel copper cores inside and an integrally covered PVC insulation layer on the outside. One side of the PVC insulation layer forms an open conductive surface corresponding to the copper core, and the other side has a groove. The hanging clamp is a snap-on structure, which snaps into the groove of the PVC insulation layer at preset lengths, and a gap is reserved between the hanging clamp and the groove.

[0009] Furthermore, the electric heating tape is composed of a conductive polymer core, two parallel metal wires, and an insulating sheath, and is generally in the shape of a flat strip.

[0010] Furthermore, the cross-sectional size of the electric heating cable is smaller than the gap between the clamp and the groove, allowing it to pass through the gap and be continuously attached to the back of the PVC insulation layer of the seamless sliding contact line, and the length of the electric heating cable is consistent with the length of the seamless sliding contact line.

[0011] Furthermore, the sliding contact line assembly also includes several auxiliary clamps used only for clamping the electric heating cable. The auxiliary clamps are spaced apart between two adjacent clamps used for installation to ensure that the electric heating cable is fully bonded to the back of the PVC insulation layer of the seamless sliding contact line.

[0012] Furthermore, the inner walls of the lifting clamp and auxiliary lifting clamp can be partially removed by mechanical milling or grinding to increase the gap between the lifting clamp and the groove of the seamless sliding contact line, thus adapting to electric heating cables of different cross-sectional sizes.

[0013] Furthermore, each copper core of the seamless sliding contact line has an independent electric heating tape laid on the back of its PVC insulation layer, and each electric heating tape is electrically connected to the junction box to achieve independent and uniform heating for each copper core.

[0014] Furthermore, the temperature threshold inside the electrical control box is determined through thermodynamic simulation calculations: for specific application environment temperatures, the temperature of the back of the PVC insulation layer required to maintain the open conductive surface of the seamless sliding contact line above the freezing point is simulated and analyzed, and a value slightly higher than this temperature is used as the temperature threshold.

[0015] Furthermore, the tensioner is fixed to both ends of the seamless sliding contact line to moderately tension the seamless sliding contact line; the current collector slides in contact with the open conductive surface of the seamless sliding contact line to obtain power.

[0016] Furthermore, the clamp also serves as both a seamless sliding contact line installation and fixing function and a clamping and limiting function for the electric heating cable.

[0017] The technical solution of the present invention has the following technical effects:

[0018] The present invention provides a frost-resistant sliding contact line device that uses electric heat tracing to solve the frost problem on open conductive surfaces, enabling continuous and stable mobile power supply under frost conditions.

[0019] The present invention provides a frost-resistant sliding contact line device, which can be modified from a mature seamless sliding contact line and electric heating tape combination on the market. It is easy to use and economical.

[0020] The present invention provides a frost-resistant sliding contact line device with a compact structure, small footprint, flexible winding capability, and strong spatial adaptability.

[0021] The present invention provides a frost-resistant sliding contact line device that employs an automatically controlled intermittent heating method to maintain a frost-free state, and allows mobile electrical equipment to be activated at any time. For mobile power supply applications in cold storage, compared with continuous high-temperature heating, it can reduce the impact on the surrounding environment and materials. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a frost-resistant sliding contact line device according to the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the sliding contact line assembly of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the electric heat tracing assembly of the present invention;

[0025] Figure 4 This is a schematic diagram of the installation of the electric heating tape of the present invention embedded in the seamless sliding contact line.

[0026] Figure 5 This is a schematic diagram of the structure of the electronic control component of the present invention.

[0027] In the attached diagram: sliding contact line assembly 1, electric heat tracing assembly 2, electrical control assembly 3, seamless sliding contact line 11, hanging clamp 12, tensioner 13, current collector 14, electric heat tracing tape 21, junction box 22, electrical control box 31, temperature sensor 32. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 As shown in the figure, an anti-frost sliding contact line device provided by an embodiment of the present invention includes a sliding contact line assembly 1, an electric heat tracing assembly 2, and an electric control assembly 3.

[0030] The sliding contact line assembly 1 is installed along the running path of the mobile device to provide power to the mobile device. For example... Figure 2 As shown, the sliding contact line assembly 1 includes a seamless sliding contact line 11, hanging clamps 12, tensioners 13, and current collectors 14. The seamless sliding contact line 11 is a flexible, rollable material. Multiple rows of parallel copper cores are covered by an integral PVC insulation layer. One side of the seamless sliding contact line 11 is an open conductive surface, and the corresponding back of the PVC insulation layer has a groove. The seamless sliding contact line 11 has a flat overall structure. A hanging clamp 12 is installed at regular intervals, with a gap between the hanging clamp 12 and the groove on the back of the PVC insulation layer. Both ends of the seamless sliding contact line 11 are fixed and moderately tightened by the tensioners 13. The current collector 14 contacts the open conductive surface of the seamless sliding contact line 11 to draw power.

[0031] like Figure 3 As shown in Figure 4, the electric heating tape 21 is composed of a conductive polymer, two parallel metal wires, and an insulating sheath, and has an overall flat strip structure. Its cross-sectional dimension is smaller than the gap between the back of the seamless sliding contact line 11 and the hanging clamp 12, allowing the electric heating tape 21 to pass through the gap and be continuously attached to the back of the seamless sliding contact line 11. The end of the electric heating tape 21 is fixed in the junction box 22 to receive power. The length of the electric heating tape 21 is basically the same as the length of the seamless sliding contact line 11, achieving full-length heat tracing.

[0032] The hanging clamp 12 is used as both an installation component for the seamless sliding contact line 11 and a clamp for the electric heating tape 21. To improve the heat conduction effect, the number of hanging clamps 12 used only as clamps in the middle is increased to ensure that the electric heating tape 21 fits well against the seamless sliding contact line 11.

[0033] like Figure 5 As shown, the electrical control assembly 3 includes an electrical control box 31 and a temperature sensor 32. The electrical control box 31 is a power distribution unit, which is electrically connected to the tensioner 13 and the junction box 22 respectively, and provides independent power to the seamless sliding contact line 11 and the electric heating tape 21.

[0034] The temperature sensor 32 is a thin-film adhesive structure, attached between the electric heating tape 21 and the PVC insulation layer of the seamless sliding contact line 11. It measures the temperature on the back of the PVC insulation layer and feeds the temperature back to the control box 31. A temperature threshold is set inside the control box 31. When the temperature measured by the temperature sensor 32 is higher than the threshold, the control box 31 automatically disconnects the power supply to the heating tape. When the temperature measured by the temperature sensor 32 is lower than the threshold, the control box 31 automatically connects the power supply to the heating tape, thus achieving intermittent heating.

[0035] Thermodynamic simulation was used to analyze the required temperature at the location of temperature sensor 32 to maintain the temperature of the open conductive surface above freezing under specific ambient temperatures. A value slightly higher than this temperature was set as the threshold temperature within the control box, serving as the critical condition for automatically starting and stopping the electric heating tape 21. The open conductive surface of the seamless sliding contact line 11 will always be frost-free, ensuring continuous power transmission with the current collector 14.

[0036] The working principle of this invention is as follows: by using electric heating and combining temperature measurement and feedback control, the open conductive surface of the seamless sliding contact line 11 is always kept free of frost under frost conditions, so that the seamless sliding contact line 11 can still transmit power continuously and stably under frost conditions.

Claims

1. A frost-resistant sliding contact line device, characterized in that, The system includes a sliding contact line assembly, an electric heat tracing assembly, and an electrical control assembly. The sliding contact line assembly comprises a seamless sliding contact line, clamps, a tensioner, and a current collector. The seamless sliding contact line is a multi-core parallel integrated flexible structure, installed along the running path of the mobile device, and fixed by the clamps and tensioner. The current collector is attached to the conductive surface of the seamless sliding contact line to provide power for the mobile device. The electric heat tracing assembly includes an electric heat tracing tape and a junction box. The electric heat tracing tape is attached to the surface of the seamless sliding contact line, and the junction box is fixed to the end of the seamless sliding contact line. The end of the electric heat tracing tape is connected to a junction box. A junction box is used to obtain power; the electrical control assembly includes an electrical control box and a temperature sensor. The electrical control box is electrically connected to the tensioner and the junction box respectively, and is used to provide independent power supply for the seamless sliding contact line and the electric heating tape. The temperature sensor is attached between the electric heating tape and the seamless sliding contact line, and is used to measure the temperature on the back of the seamless sliding contact line and feed it back to the electrical control box. The electrical control box has a preset temperature threshold. When the temperature measured by the temperature sensor is lower than the threshold, the electrical control box connects the power supply to the electric heating tape. When the temperature is higher than the threshold, the electrical control box disconnects the power supply to achieve intermittent heating.

2. The frost-resistant sliding contact line device according to claim 1, characterized in that, The seamless sliding contact line has multiple parallel copper cores inside and an integral PVC insulation layer on the outside. One side of the PVC insulation layer forms an open conductive surface corresponding to the copper core, and the other side has a groove. The hanging clamp is a snap-on structure, which snaps into the groove of the PVC insulation layer at preset lengths, and a gap is reserved between the hanging clamp and the groove.

3. The frost-resistant sliding contact line device according to claim 2, characterized in that, The electric heating cable consists of a conductive polymer core, two parallel metal wires, and an insulating sheath, and is generally in the shape of a flat strip.

4. The frost-resistant sliding contact line device according to claim 3, characterized in that, The cross-sectional size of the electric heating cable is smaller than the gap between the clamp and the groove, allowing it to pass through the gap and be continuously attached to the back of the PVC insulation layer of the seamless sliding contact line. The length of the electric heating cable is the same as the length of the seamless sliding contact line.

5. The frost-resistant sliding contact line device according to claim 2, characterized in that, The sliding contact line assembly also includes several auxiliary clamps used only for clamping the electric heating cable. The auxiliary clamps are spaced apart between two adjacent clamps used for installation to ensure that the electric heating cable is fully bonded to the back of the PVC insulation layer of the seamless sliding contact line.

6. The frost-resistant sliding contact line device according to claim 5, characterized in that, The inner walls of the lifting clamp and auxiliary lifting clamp can be partially removed by mechanical milling or grinding to increase the gap between the lifting clamp and the groove of the seamless sliding contact line, thus adapting to electric heating cables of different cross-sectional sizes.

7. The frost-resistant sliding contact line device according to claim 2, characterized in that, Each copper core of the seamless sliding contact line has an independent electric heating tape laid on the back of its PVC insulation layer, and each electric heating tape is electrically connected to the junction box to achieve independent and uniform heating for each copper core.

8. The frost-resistant sliding contact line device according to claim 2, characterized in that, The temperature threshold inside the electrical control box is determined through thermodynamic simulation calculations: for specific application environment temperatures, the temperature of the back of the PVC insulation layer required to maintain the open conductive surface of the seamless sliding contact line above the freezing point is simulated and analyzed, and a value slightly higher than this temperature is used as the temperature threshold.

9. The frost-resistant sliding contact line device according to claim 1, characterized in that, The tensioner is fixed to both ends of the seamless sliding contact line and is used to moderately tension the seamless sliding contact line; the current collector slides in contact with the open conductive surface of the seamless sliding contact line to obtain power.

10. The frost-resistant sliding contact line device according to claim 1, characterized in that, The clamp combines the functions of installing and fixing seamless sliding contact lines with the clamping and limiting functions of electric heating cables.

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