Four-rail backflow system and construction method

Abstract

The invention discloses a four-rail backflow system which comprises a power supply rail which is arranged on one side of a walking rail, and a rail contact surface faces the walking rail; the backflow rail and the power supply rail are arranged on the same side in a double-layer mode; a support device; the power supply rail and the backflow rail are fixed to the supporting device through a first insulation installation base and a second insulation installation base respectively, the first insulation installation base comprises a bottom insulation face which extends upwards to form a first insulation face and a second insulation face, a T-shaped gap is formed between the first insulation face and the second insulation face, and the bottom insulation face extends horizontally to form a first installation part and a second installation part. A plurality of first reinforcing members are arranged between the first mounting part and the first insulating surface, a plurality of second reinforcing members are arranged between the second mounting part and the second insulating surface, and the first reinforcing members and the second reinforcing members are respectively provided with first sewage discharge grooves and second sewage discharge grooves. The invention further discloses a construction method, the power supply rail and the backflow rail are installed through the first insulation installation base and the second insulation installation base respectively, and the insulation reliability between the power supply rail and the backflow rail is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of urban rail transit, and more specifically, to a four-track return flow system and a construction method. Background Art

[0002] In recent years, urban rail transit has developed rapidly, and urban subways have been fully covered in major cities. At present, urban rail transit generally supplies power to urban rail electric locomotives in the form of overhead contact networks or contact rails (third rails), and returns to the traction substation through the running rails. However, in the prior art, although insulating gaskets are set between the running rails and the sleepers, with the increase of service time, the contamination of the insulating gaskets and the corrosion of rainwater make it impossible to achieve the insulation of the running rails, resulting in the return traction current flowing out of the rails through the rail leakage impedance, forming stray current. The stray current will cause corrosion to the running rails, the steel bars of the roadbed structure, the steel bars of the tunnel structure, the ground grid, and the metal equipment along the urban rail transit line, affecting the service life of the relevant metal equipment in the urban rail transit, and causing serious safety hazards to the urban rail transit.

[0003] Therefore, the fourth-rail return technology came into being, and the structure, installation settings and auxiliary installation structure of the fourth return system became the focus of research. For example, the return rail disclosed in the patent application number 202321012309.3 is arranged between the two running rails under the car body. Although it does not occupy the space outside the running rails and has no impact on the surrounding areas of the line, the existing equipment on the line has a greater impact on the track layout and requires special design. In addition, the cross-track position requires special treatment, otherwise it is easy to cause arcing. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] Another object of the present invention is to provide a four-rail return rail system, which adopts the method of collecting current on the same side of the power supply rail and the return rail. Compared with the current collecting on the upper part of the same side and the current collecting on the lower part of the same side, it occupies less space and does not affect the overall structure of the locomotive. In addition, the power supply rail and the return rail are respectively installed and fixed by a first insulating mounting seat and a second insulating mounting seat. Since the insulation protection extends all the way to the vicinity of the rail surface, the insulation reliability between the power supply rail and the return rail is improved.

[0006] In order to achieve these objects and other advantages according to the present invention, there is provided a four-track reflow system, comprising: A power supply rail, which is arranged on one side of the running rail, and a rail contact surface of the power supply rail faces the running rail; A return rail, which is arranged in double layers on the same side as the power supply rail, and the rail contact surface of the return rail faces the running rail; A supporting device, which is supported and arranged on one side of the running rail, and the power supply rail and the return rail are arranged on the supporting device; Among them, the supporting device is provided with a first insulating mounting seat, a second insulating mounting seat and a protective component, the first insulating mounting seat is used to fix the power supply rail on the supporting device, and the second insulating mounting seat is used to fix the return rail on the supporting device. The first insulating mounting seat and the second insulating mounting seat have the same structure, specifically including: a bottom insulating surface, the two ends of the bottom insulating surface extend upward and toward each other to form a first insulating surface and a second insulating surface, a T-shaped gap is formed between the first insulating surface and the second insulating surface, the bottom of the bottom insulating surface extends horizontally to both sides to form a first mounting portion and a second mounting portion, a plurality of first reinforcing components are provided between the first mounting portion and the upper end of the first insulating surface, a plurality of second reinforcing components are provided between the second mounting portion and the upper end of the second insulating surface, a first drain trough is provided on the first reinforcing component, and a second drain trough is provided on the second reinforcing component.

[0007] Preferably, the protective component is arranged on the top of the supporting device, and the protective component includes: a protective body and a dust suction component, a plurality of dust storage grooves are arranged on the protective body, a suction end of the dust suction component is provided with a plurality of suction pipes corresponding to the plurality of dust storage grooves, the plurality of suction pipes are connected to a main suction pipe, and the main suction pipe is connected to a dust box in the dust suction component.

[0008] Preferably, the four-track reflux system further comprises: A four-track return device is arranged on a vehicle body, and comprises: a housing, a return slider, a return cable, a control circuit and a pneumatic drive component, wherein the return slider is connected to the return cable, the control circuit is connected to the pneumatic drive component by signal, and the pneumatic drive component drives the return slider to separate from or contact the return track according to a control signal from the control circuit to return the stray current to the return track; Wherein, the shell includes a base plate and a mounting plate, the left and right sides of the base plate are provided with mounting holes, the mounting plate is a convex structure, and the left and right sides of the mounting plate are provided with fixing holes at positions corresponding to the mounting holes, and the fixing components pass through the fixing holes and the mounting holes to fix the four-track reflux device on the vehicle body, and the surface of the mounting plate is provided with a connecting piece, through which the pneumatic drive component is connected to the reflux slider, and the reflux cable is mounted on the connecting piece.

[0009] Preferably, the first mounting portion is provided with a first fixing piece, the second mounting portion is provided with a second fixing piece, the connection position of the first reinforcing member to the first mounting portion is closer to the outer edge of the first mounting portion than the connection position of the first fixing piece to the first mounting portion, and the connection position of the second reinforcing member to the second mounting portion is closer to the outer edge of the second mounting portion than the connection position of the second fixing piece to the second mounting portion.

[0010] Preferably, the surfaces of the first insulating mounting seat and the second insulating mounting seat are both provided with a protective layer, and the protective layer is made of epoxy resin material and coated on the surfaces of the first insulating mounting seat and the second insulating mounting seat.

[0011] The present invention is further implemented by a construction method of a four-track reflux system, and the construction method of the four-track reflux system comprises the following steps: Step 1: Fix the support device on the opposite side of the running vehicle platform, and set the support device in a vertical direction; Step 2: fix the return rail on the support device through a second insulating mounting seat, wherein the return rail is arranged close to the ground and the track contact surface of the return rail faces the running rail; Step 3: fix the power supply rail on the support device through a first insulating mounting seat, wherein the fixed position of the power supply rail is located directly above the return rail and the rail contact surface of the power supply rail faces the running rail; Step 4: fix a protective component at the top of the supporting device.

[0012] Preferably, a four-track reflow device is provided on the vehicle body, so that when a reflow slider in the four-track reflow device contacts the reflow rail, the reflow slider contacts the track contact surface of the reflow rail head-on.

[0013] The present invention has at least the following beneficial effects: 1. The four-rail return rail system of the present invention adopts the current collection method on the same side of the power supply rail and the return rail. Compared with the current collection method on the upper part of the same side and the current collection method on the lower part of the same side, it occupies a small space and does not affect the overall structure of the locomotive. In addition, the first insulating mounting seat and the second insulating mounting seat are respectively used to install and fix the power supply rail and the return rail. Since the insulation protection extends all the way to the vicinity of the rail surface, the insulation reliability between the power supply rail and the return rail is improved.

[0014] 2. The protective component in the four-track reflux system of the present invention is used to collect dust by setting dust troughs, and each dust trough corresponds to a plurality of suction pipes. The dust and other debris in each dust trough are sucked into the dust box through the dust suction component, so as to prevent the dust and debris in the four-track reflux system from falling into the running rails and affecting the normal operation of the vehicle.

[0015] 3. The mounting plate in the four-track reflow device in the four-track reflow system of the present invention is a raised structure, which forms a receiving cavity relative to the bottom plate, and the control circuit and the pneumatic drive component are received in the receiving cavity, saving space. The reflow slider is mounted on the mounting plate through a connector so that its structure matches the reflow rail, so that when the vehicle body is running and reflowing, the reflow slider is in sliding contact with the front of the reflow rail, thereby increasing the contact surface and the reflow efficiency.

[0016] 4. In the four-track return system of the present invention, a plurality of first reinforcing members are provided between the first mounting portion and the upper end of the first insulating surface, a plurality of second reinforcing members are provided between the second mounting portion and the upper end of the second insulating surface, a first drain groove is provided on the first reinforcing member, and a second drain groove is provided on the second reinforcing member. The strength of the insulating mounting seat is enhanced by the arrangement of the first and second reinforcing members, and the dust and debris on the insulating seat are easily discharged by the arrangement of the drain groove.

[0017] 5. In the four-track return system of the present invention, the reinforcing ribs extend to cover the fixings to prevent corrosion and other damage to the fixings caused by rain and other external factors, thereby increasing the service life of the insulating mounting seat.

[0018] 6. In the four-track reflow system of the present invention, by providing a protective layer on the insulating mounting seat, the insulation performance thereof is further improved, and the service life of the insulating mounting seat is also increased.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a four-track reflux system in a technical solution of the present invention; Figure 2 It is a structural schematic diagram of a first insulating mounting seat in a four-track return system in another technical solution of the present invention; Figure 3 It is a structural schematic diagram of a first insulating mounting seat in a four-rail return system in another technical solution of the present invention, in which a power supply rail is installed; Figure 4 It is a structural schematic diagram of the first reinforcing member in the four-track reflux system in another technical solution of the present invention; Figure 5 It is a structural schematic diagram of a protective component in a four-track reflux system in another technical solution of the present invention; Figure 6 It is a structural schematic diagram of a four-track reflux device in a four-track reflux system in another technical solution of the present invention; Figure markings: 1: running rail, 2: power supply rail, 3: return rail, 4: supporting device, 5: first insulating mounting seat, 500: bottom insulating surface, 510: first insulating surface, 520: second insulating surface, 530: T-shaped gap, 540: first mounting part, 541: first fixing part, 550: second mounting part, 551: second fixing part, 560: first reinforcing member, 561: first sewage trough, 570: second reinforcing member, 6: second insulating mounting seat, 7: protective member, 700: protective body, 701: dust accumulation trough, 710: dust suction member, 720: suction pipe, 730, main suction pipe, 8: four-track return device, 800: shell, 801: bottom plate, 802: mounting plate, 803: fixing hole, 810: return slider, 820: return cable, 830: connecting part. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0022] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0023] like Figures 1 to 6 As shown, the present invention provides a four-track return system, comprising: A power supply rail 2, which is arranged on one side of the running rail 1, and a rail contact surface of the power supply rail 2 faces the running rail; A return rail 3, which is arranged in double layers on the same side as the power supply rail 2, and the rail contact surface of the return rail 3 faces the running rail; A supporting device 4, which is supported and arranged on one side of the running rail 1, and the power supply rail 2 and the return rail 3 are arranged on the supporting device 4; The support device 4 is provided with a first insulating mounting seat 5, a second insulating mounting seat 6 and a protective member 7. The first insulating mounting seat 5 is used to fix the power rail 2 on the support device, and the second insulating mounting seat 6 is used to fix the return rail 6 on the support device 4. The first insulating mounting seat 5 has the same structure as the second insulating mounting seat 6. Figure 2 and 3Taking the first insulating mounting seat as an example, the first insulating mounting seat 5 specifically includes: a bottom insulating surface 500, the two ends of the bottom insulating surface 500 extend upward and toward each other to form a first insulating surface 510 and a second insulating surface 520, a T-shaped gap 530 is formed between the first insulating surface 510 and the second insulating surface 520, the bottom of the bottom insulating surface 500 extends horizontally to both sides to form a first mounting portion 540 and a second mounting portion 550, a plurality of first reinforcing members 560 are arranged between the first mounting portion 540 and the upper end of the first insulating surface 510, a plurality of second reinforcing members 570 are arranged between the second mounting portion 550 and the upper end of the second insulating surface 520, a first drain groove 561 is arranged on the first reinforcing member 560, and a second drain groove is arranged on the second reinforcing member 570 (this structure is the same as the structure of the first drain groove 561, not shown in the figure).

[0024] In the above technical solution, the power rail 2 and the return rail 3 are arranged on the opposite side of the platform by the support device 4. Compared with the existing arrangement of the power rail 2 and the return rail 3 between the two running rails 1, the power rail 2 and the return rail 3 are kept away from passengers, reducing the risk of passengers falling into the running rail 1 and contacting the power rail 2 and getting an electric shock. In addition, the return rail 3 is arranged directly below the power rail 2, so that the four-rail return device in the running vehicle can contact the return rail to return the stray current to the substation, thereby preventing the stray current from corroding the running rails, the steel bars of the roadbed structure, the steel bars of the tunnel structure, the ground grid, and the metal equipment along the urban rail transit line, affecting the service life of the relevant metal equipment in the urban rail transit, and causing serious safety hazards to the urban rail transit. By adopting the current receiving method of the power rail 2 and the return rail 3 on the same side, compared with the current receiving method on the upper part of the same side and the current receiving method on the lower part of the same side, it occupies less space and does not affect the overall structure of the locomotive. The power rail 2 is fixed on the support device 4 through the first insulating mounting seat 5, and the return rail 3 is fixed on the support device 4 through the second insulating mounting seat 6. The insulation protection of the power rail 2 and the return rail 3 is improved by the first insulating surface 510 and the second insulating surface 520 extending to the vicinity of the track contact surface of the power rail 2 and the return rail 3, so as to improve the insulation reliability between the power rail 2 and the return rail 3. Figure 2 and Figure 3As shown, taking the first insulating mounting seat 5 as an example, a plurality of first reinforcing members 560 are provided between the first mounting portion 540 and the upper end of the first insulating surface 510, a plurality of second reinforcing members 570 are provided between the second mounting portion 550 and the upper end of the second insulating surface 520, a first drain groove 561 is provided on the first reinforcing member 560, and a second drain groove is provided on the second reinforcing member 570. By arranging the plurality of first reinforcing members 560 and the second reinforcing members 570, the strength of the first insulating mounting seat 5 is enhanced. The structure of the second insulating mounting seat 6 is the same as that of the first insulating mounting seat 5, and will not be repeated again. By arranging the drain groove, it is convenient to discharge dust and debris on the insulating seat.

[0025] In the above technical solution, the construction method of the four-track reflux system includes the following steps: Step 1: The support device 4 is fixedly arranged opposite to the running vehicle platform, and the support device 4 is arranged in a vertical direction; Step 2: fix the return rail 3 on the support device 4 through the second insulating mounting seat 6, wherein the return rail 3 is arranged close to the ground and the track contact surface of the return rail 3 faces the running rail 1; Step 3: fix the power rail 2 on the support device 4 through the first insulating mounting seat 5, the fixed position of the power rail 2 is located directly above the return rail 3 and the rail contact surface of the power rail 2 faces the running rail 1; Step 4: A protective component 7 is fixedly installed at the top of the supporting device 4 .

[0026] In another technical solution, the protective component 7 is arranged on the top of the supporting device 4, and the protective component 7 includes: a protective body 700 and a dust suction component 710, a plurality of dust storage grooves 701 are arranged on the protective body 700, and a plurality of suction pipes 720 corresponding to the plurality of dust storage grooves 701 are provided at the suction end of the dust suction component 710, and the plurality of suction pipes 720 are connected to the main suction pipe 730, and the main suction pipe 730 is connected to the dust box in the dust suction component 710.

[0027] In the above technical solution, if Figure 5 As shown, in order to avoid the lack of self-cleaning function of the protective components in the prior art, a dust collecting groove 701 is arranged on the protective body 700 in the protective component 7 of the present invention for collecting dust or other debris. The recessed dust collecting groove 701 structure can prevent the running wind generated during the operation of the train from blowing them away. A plurality of suction pipes 720 correspond to each dust collecting groove 701, and the dust and other debris in each dust collecting groove 701 are sucked into the dust box through the dust suction component 710, so as to prevent the dust and debris in the four-track reflux system from falling into the running rail 1 and its surroundings, thereby affecting the normal operation of the vehicle.

[0028] In another technical solution, the four-track reflux system further includes: A four-track return device 8 is arranged on a vehicle body, and comprises: a housing 800, a return slider 810, a return cable 820, a control circuit and a pneumatic drive component, wherein the return slider 810 is connected to the return cable 820, the control circuit is connected to the pneumatic drive component signal, and the pneumatic drive component drives the return slider 810 to separate from or contact the return track 3 according to the control signal from the control circuit to return the stray current to the return track 3; Among them, the shell 800 includes a base plate 801 and a mounting plate 802, and mounting holes are provided on the left and right sides of the base plate 801. The mounting plate 802 is a convex structure, and fixing holes 803 are provided at the positions corresponding to the mounting holes on the left and right sides of the mounting plate 802. The fixing components pass through the fixing holes 803 and the mounting holes to fix the four-track reflux device 8 on the vehicle body. A connecting piece 830 is provided on the surface of the mounting plate 802, and the pneumatic drive component is connected to the reflux slider 810 through the connecting piece 830, and the reflux cable 820 is mounted on the connecting piece.

[0029] In the above embodiment, if Figure 6 As shown, the mounting plate 802 in the four-track return device 8 is a convex structure, which forms a receiving cavity relative to the bottom plate 801, and the control circuit and the pneumatic drive component are received in the receiving cavity, saving space. By installing the return slider 810 on the mounting plate 802 through the connector 830, its structure matches the setting position of the return rail 3, so that when the vehicle body runs to the setting position of the return rail 3 for return, the return slider 810 and the return rail 3 are in frontal sliding contact, which increases the contact surface of the two and increases the return efficiency of the stray current. Among them, the control circuit is used to control the disconnection and start-up of the pneumatic drive component, and the pneumatic drive component is disconnected and started through the air path, so as to ensure that the return slider 810 is in the front facing the corresponding position of the return rail 3, and the stray current on the vehicle is transferred to the return slider 810 through the return cable 820, and the return slider 810 further transfers the stray current to the return rail 3, and then returns to the substation.

[0030] In another technical solution, a first fixing member 541 is provided on the first mounting portion 540, and a second fixing member 551 is provided on the second mounting portion 550. The connection position between the first reinforcing member 560 and the first mounting portion 540 is closer to the outer edge of the first mounting portion 540 than the connection position between the first fixing member 541 and the first mounting portion 540. The connection position between the second reinforcing member 570 and the second mounting portion 550 is closer to the outer edge of the second mounting portion 550 than the connection position between the second fixing member 551 and the second mounting portion 550.

[0031] In the above technical solution, if Figure 2 As shown, taking the first insulating mounting seat 5 as an example, the connection position of the first reinforcing member 560 and the first mounting portion 540 is closer to the outer edge of the first mounting portion 540 than the connection position of the first fixing member 541 and the first mounting portion 540, and the connection position of the second reinforcing member 570 and the second mounting portion 550 is closer to the outer edge of the second mounting portion 550 than the connection position of the second fixing member 551 and the second mounting portion 550, so that the first reinforcing member 560 shields the first fixing member 541, and the second reinforcing member 570 shields the second fixing member 551, so as to prevent the first fixing member 541 and the second fixing member 551 from being corroded and damaged by other external factors such as rain, thereby improving the service life of the insulating mounting seat. Among them, the first reinforcing member 560 and the second reinforcing member 570 are both made of insulating material or non-insulating material with an insulating protective layer on the surface, and the first fixing member 541 and the second fixing member 551 are also made of insulating material or non-insulating material with an insulating protective layer on the surface.

[0032] In another technical solution, the surfaces of the first insulating mounting seat 5 and the second insulating mounting seat 6 are both provided with a protective layer, and the protective layer is made of epoxy resin material and coated on the surfaces of the first insulating mounting seat 5 and the second insulating mounting seat 6 .

[0033] In the above technical solution, by setting a protective layer on the surface of the first insulating mounting seat 5 and the second insulating mounting seat 6, the insulation performance thereof is further improved, the insulation reliability between the power supply rail 2 and the return rail 3 is further improved, the problem of mutual influence of current between the two rails is prevented, and at the same time, the service life of the first insulating mounting seat 5 and the second insulating mounting seat 6 is improved.

[0034] This technical solution may also include the following technical details to better achieve the technical effect: A construction method of a four-track reflux system, comprising: Step 1: The support device 4 is fixedly arranged opposite to the running vehicle platform, and the support device 4 is arranged in a vertical direction; Step 2: fix the return rail 3 to the lower part of the support device 4 through the second insulating mounting seat 6, the return rail 3 is arranged close to the ground and the track contact surface of the return rail 3 faces the running rail 1; Step 3: fix the power rail 2 on the upper part of the support device 4 through the first insulating mounting seat 5, the fixed position of the power rail 2 is located directly above the return rail 3 and the rail contact surface of the power rail 2 faces the running rail 1; Step 4: Fixing a protective member 7 at the top of the supporting device 4; Step 5: A four-track reflow device 8 is arranged on the vehicle body, so that when the reflow slider 810 in the four-track reflow device 8 contacts the reflow rail 3 , the reflow slider 810 contacts the track contact surface of the reflow rail 3 head-on.

[0035] In the above technical scheme, by adopting the method of collecting current on the same side of the power supply rail 2 and the return rail 3, compared with the method of collecting current on the upper part of the same side and the method of collecting current on the lower part of the same side, it occupies less space and does not affect the overall structure of the locomotive. The first insulating mounting seat 5 and the second insulating mounting seat 6 are respectively used to install and fix the power supply rail 2 and the return rail 3. Since the insulation protection of the first insulating mounting seat 5 and the second insulating mounting seat 6 extends all the way to the vicinity of the rail surface of the power supply rail 2 and the return rail 3, the problem of mutual influence of current between the power supply rail 2 and the return rail 3 is prevented, thereby improving the insulation reliability between the power supply rail 2 and the return rail 3.

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following embodiments are provided for illustration: like Figures 1 to 6 As shown, a four-track return system includes: A power supply rail 2, which is arranged on one side of the running rail 1, and a rail contact surface of the power supply rail 2 faces the running rail; A return rail 3, which is arranged in double layers on the same side as the power supply rail 2, and the rail contact surface of the return rail 3 faces the running rail; A support device 4 is supported and arranged on one side of the running rail 1, and the power supply rail 2 and the return rail 3 are arranged on the support device 4; the support device 4 is provided with a first insulating mounting seat 5, a second insulating mounting seat 6 and a protective member 7, the first insulating mounting seat 5 is used to fix the power supply rail 2 on the support device, and the second insulating mounting seat 6 is used to fix the return rail 6 on the support device 4, and the first insulating mounting seat 5 and the second insulating mounting seat 6 have the same structure, such as Figure 2 and 3Taking the first insulating mounting seat as an example, the first insulating mounting seat 5 specifically includes: a bottom insulating surface 500, the two ends of the bottom insulating surface 500 extend upward and toward each other to form a first insulating surface 510 and a second insulating surface 520, a T-shaped gap 530 is formed between the first insulating surface 510 and the second insulating surface 520, the bottom of the bottom insulating surface 500 extends horizontally to both sides to form a first mounting portion 540 and a second mounting portion 550, a plurality of first reinforcing members 560 are arranged between the first mounting portion 540 and the upper end of the first insulating surface 510, a plurality of second reinforcing members 570 are arranged between the second mounting portion 550 and the upper end of the second insulating surface 520, a first drain groove 561 is arranged on the first reinforcing member 560, a second drain groove (not shown in the figure) is arranged on the second reinforcing member 570, a first fixing member 541 is arranged on the first mounting portion 540, a second fixing member 551 is arranged on the second mounting portion 550, and the connection between the first reinforcing member 560 and the first mounting portion 540 The position of the second reinforcing member 570 and the second mounting portion 550 is closer to the outer edge of the first mounting portion 540 than the connection position of the first fixing member 541 and the first mounting portion 540, and the connection position of the second reinforcing member 570 and the second mounting portion 550 is closer to the outer edge of the second mounting portion 550 than the connection position of the second fixing member 551 and the second mounting portion 550; the protective member 7 is arranged on the top of the supporting device 4, and the protective member 7 includes: a protective body 700 and a dust suction member 710, a plurality of dust storage grooves 701 are arranged on the protective body 700, and a plurality of suction pipes 720 corresponding to the plurality of dust storage grooves 701 are arranged at the suction end of the dust suction member 710, and the plurality of suction pipes 720 are connected to the main suction pipe 730, and the main suction pipe 730 is connected to the dust box in the dust suction member 710; the surfaces of the first insulating mounting seat 5 and the second insulating mounting seat 6 are both provided with a protective layer, and the protective layer is made of epoxy resin material, which is coated on the surfaces of the first insulating mounting seat 5 and the second insulating mounting seat 6; The four-track return device 8 is arranged on the vehicle body, and the four-track return device 8 includes: a housing 800, a return slider 810, a return cable 820, a control circuit and a pneumatic drive component, wherein the return slider 810 is connected to the return cable 820, the control circuit is connected to the pneumatic drive component signal, and the pneumatic drive component drives the return slider 810 to separate from or contact the return track 3 according to the control signal from the control circuit to return the stray current to the return track 3; wherein the housing 800 includes a bottom plate 8 01 and a mounting plate 802, mounting holes are arranged on the left and right sides of the bottom plate 801, the mounting plate 802 is a raised structure, fixing holes 803 are arranged at positions corresponding to the mounting holes on the left and right sides of the mounting plate 802, a fixing member passes through the fixing holes 803 and the mounting holes to fix the four-track return device 8 on the vehicle body, a connecting piece 830 is arranged on the surface of the mounting plate 802, the pneumatic drive member is connected to the return slider 810 through the connecting piece 830, and the return cable 820 is mounted on the connecting piece.

[0037] The construction method of the four-track reflux system in this embodiment includes the following steps: Step 1: fix the support device 4 on the opposite side of the running vehicle platform, and fix the support device 4 in a vertical direction on the wall on the opposite side of the running vehicle platform through fixing parts (insulating fixing parts or non-insulating material fixing parts, such as hexagonal bolts and hexagonal nuts with insulating material (epoxy resin paint for insulation protection)) at the horizontal part, bottom and top of the device 4; Step 2: fix the return rail 3 to the lower part of the support device 4 through the second insulating mounting seat 6, the return rail 3 is arranged close to the ground and the track contact surface of the return rail 3 faces the running rail 1; Step 3: fix the power rail 2 on the upper part of the support device 4 through the first insulating mounting seat 5, the fixed position of the power rail 2 is located directly above the return rail 3 and the rail contact surface of the power rail 2 faces the running rail 1; Step 4: A protective member 7 is fixedly arranged at the top of the support device 4. The dust suction member in the protective member 7 can be set to clean the dust or debris in the dust storage groove 701 at a certain time. The working principle of the dust suction member is the same as that of the existing vacuum cleaner. The motor runs at a high speed to suck air from the suction port, so that a certain vacuum is generated in the dust box. The dust or debris enters the main suction pipe 730 through the suction pipe 720 and is then sucked into the dust box. The dust box can be emptied by the fixed device. Step 5, a four-track return device 8 is arranged on the car body, so that when the return slider 810 in the four-track return device 8 contacts the return rail 3, the return slider 810 contacts the track contact surface of the return rail 3 head-on; the control circuit and the pneumatic drive component are fixed on the bottom plate, the structure of the control circuit and the structure of the pneumatic drive component are the same as those of the control circuit and the pneumatic drive component in the return device used in the existing train, the connecting piece 830 is connected to the pneumatic drive component through the through hole on the surface of the mounting plate 802, the four-track return device is installed on the car body through the corresponding fixing holes on the mounting plate 802 and the mounting holes on the bottom plate 801, the return cable 820 is clamped on the connecting piece 830 through the clamping structure, and the return slider 810 is connected and fixed to the connecting piece 830.

[0038] The number of equipment and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the four-track reflow system of the present invention will be obvious to those skilled in the art.

[0039] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Four-track reflux system, It is characterized in that include: A power supply rail, which is arranged on one side of the running rail, and a rail contact surface of the power supply rail faces the running rail; A return rail, which is arranged in double layers on the same side as the power supply rail, and the rail contact surface of the return rail faces the running rail; A supporting device, which is supported and arranged on one side of the running rail, and the power supply rail and the return rail are arranged on the supporting device; Among them, the supporting device is provided with a first insulating mounting seat, a second insulating mounting seat and a protective component, the first insulating mounting seat is used to fix the power supply rail on the supporting device, and the second insulating mounting seat is used to fix the return rail on the supporting device. The first insulating mounting seat and the second insulating mounting seat have the same structure, specifically including: a bottom insulating surface, the two ends of the bottom insulating surface extend upward and toward each other to form a first insulating surface and a second insulating surface, a T-shaped gap is formed between the first insulating surface and the second insulating surface, the bottom of the bottom insulating surface extends horizontally to both sides to form a first mounting portion and a second mounting portion, a plurality of first reinforcing components are provided between the first mounting portion and the upper end of the first insulating surface, a plurality of second reinforcing components are provided between the second mounting portion and the upper end of the second insulating surface, a first drain trough is provided on the first reinforcing component, and a second drain trough is provided on the second reinforcing component.

2. The four-track reflow system as claimed in claim 1, It is characterized in that The protective component is arranged on the top of the supporting device, and the protective component includes: a protective body and a dust suction component, a plurality of dust storage grooves are arranged on the protective body, a plurality of suction pipes corresponding to the plurality of dust storage grooves are provided at the suction end of the dust suction component, the plurality of suction pipes are connected to the main suction pipe, and the main suction pipe is connected to the dust box in the dust suction component.

3. The four-track reflow system as claimed in claim 1, It is characterized in that Also includes: A four-track return device is arranged on a vehicle body, and comprises: a housing, a return slider, a return cable, a control circuit and a pneumatic drive component, wherein the return slider is connected to the return cable, the control circuit is connected to the pneumatic drive component by signal, and the pneumatic drive component drives the return slider to separate from or contact the return track according to a control signal from the control circuit to return the stray current to the return track; Wherein, the shell includes a base plate and a mounting plate, the left and right sides of the base plate are provided with mounting holes, the mounting plate is a convex structure, and the left and right sides of the mounting plate are provided with fixing holes at positions corresponding to the mounting holes, and the fixing components pass through the fixing holes and the mounting holes to fix the four-track reflux device on the vehicle body, and the surface of the mounting plate is provided with a connecting piece, through which the pneumatic drive component is connected to the reflux slider, and the reflux cable is mounted on the connecting piece.

4. The four-track reflow system as claimed in claim 1, It is characterized in that A first fixing piece is provided on the first mounting portion, and a second fixing piece is provided on the second mounting portion. A connection position between the first reinforcing member and the first mounting portion is closer to an outer edge of the first mounting portion than a connection position between the first fixing piece and the first mounting portion, and a connection position between the second reinforcing member and the second mounting portion is closer to an outer edge of the second mounting portion than a connection position between the second fixing piece and the second mounting portion.

5. The four-track reflow system as claimed in claim 1, It is characterized in that The surfaces of the first insulating mounting seat and the second insulating mounting seat are both provided with a protective layer, and the protective layer is made of epoxy resin material and is coated on the surfaces of the first insulating mounting seat and the second insulating mounting seat.

6. A construction method of the four-track return system as claimed in claim 1, It is characterized in that The steps include: Step 1: Fix the support device on the opposite side of the running vehicle platform, and set the support device in a vertical direction; Step 2: fix the return rail on the support device through a second insulating mounting seat, wherein the return rail is arranged close to the ground and the track contact surface of the return rail faces the running rail; Step 3: fix the power supply rail on the support device through a first insulating mounting seat, wherein the fixed position of the power supply rail is located directly above the return rail and the rail contact surface of the power supply rail faces the running rail; Step 4: fix a protective component at the top of the supporting device.

7. The construction method of the four-track reflow system as described in claim 6 is characterized in that it also includes the step of: arranging a four-track reflow device on the vehicle body, so that when a reflow slider in the four-track reflow device contacts the reflow rail, the reflow slider contacts the track contact surface of the reflow rail head-on.

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