A rail transit grounding device and method

Abstract

The present invention discloses a rail transit grounding device and method, belonging to the field of rail transit grounding. A rail transit grounding device includes a mounting plate, both sides of the mounting plate are fixedly connected with positioning rods, the outer wall of the positioning rod is slidably sleeved with a limiting slide, the side wall of the limiting slide is fixedly connected with a contact plate, a first spring is fixedly connected between the contact plate and the mounting plate, and a power lead is fixedly connected to the side of the contact plate close to the mounting plate; the present invention utilizes the rebound effect of the first spring to make the contact plate fit tightly on the side wall of the track, avoiding the situation where the surface of the contact plate becomes thinner due to friction and causing poor grounding contact, thereby improving the grounding effect, thereby transferring the abnormal current generated by the running of the rail train to the track, and then flowing into the earth to achieve grounding, avoiding the harm caused by the current to the human body, and also avoiding equipment failure and power fluctuations caused by unstable current, improving the safety and stability of train driving.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit grounding, and in particular to a rail transit grounding device and method. Background Art

[0002] The grounding device of rail transit is one of the important components used to ensure the safety and stability of trains during operation. It can guide the abnormal current generated by the train into the ground, reducing the impact of abnormal current on the human body and the train. The grounding device is usually completed through the contact between the wheels and the track to ensure that the train can maintain stable contact with the track during operation, thereby ensuring power transmission and operation safety.

[0003] The patent with the publication number "CN110654414A" is entitled "grounding device, rail vehicle and rail transit system". The rail vehicle is movably matched with the rail beam, and the rail beam is provided with a grounding rail and a rail beam baffle. The grounding device includes: an anti-rollover baffle and a grounding shoe. The end of the anti-rollover baffle is located below the rail beam baffle so that the anti-rollover baffle and the rail beam baffle are stopped when the rail vehicle tilts. The grounding shoe is arranged below the end of the anti-rollover baffle, and the grounding shoe is used to contact the grounding rail. Therefore, by matching the rail beam baffle, the anti-rollover baffle, the grounding shoe and the grounding rail, the rail vehicle can be prevented from rolling over, and the installation can be convenient, eliminating a large number of grounding shoe installation devices. In addition, the grounding device is small in size and simple in structure, which can save manufacturing costs.

[0004] With respect to the above existing patents, there are still the following deficiencies: the contact piece will become thinner under the action of long-term friction, resulting in poor contact between the contact piece and the track, which reduces the grounding effect; and because the track is exposed to the air for a long time, a certain amount of dust and impurities will adhere to its side wall, or even rust, which will reduce the contact effect between the contact piece and the track, and reduce the final grounding effect. Therefore, a rail transit grounding device and method are proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the contact parts become thinner due to long-term friction, and the track is exposed to the air for a long time, and its side walls will be attached with dust or rust, resulting in a reduction in the final grounding effect, and to propose a rail transit grounding device and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A rail transit grounding device comprises a mounting plate, both sides of which are fixedly connected with positioning rods, the outer wall of the positioning rods is slidably sleeved with a limiting slide, the side wall of the limiting slide is fixedly connected with a contact plate, a first spring is fixedly connected between the contact plate and the mounting plate, a power lead is fixedly connected to the side of the contact plate close to the mounting plate, the power lead passes through the mounting plate and is fixedly connected with a mounting buckle, and also comprises: a dust cleaning component, which is arranged in the contact plate and is used to clean dust attached to the side wall of the track; a rust removal component, which is arranged on the contact plate and is used to remove rust from the side wall of the track; and a cooling component, which is arranged on the contact plate and is used to cool the friction surface of the contact plate.

[0008] In order to improve the grounding conduction effect, preferably, the dust cleaning component includes an air guide groove, which is opened inside the two ends of the contact plate, and the top of the inner cavity of the air guide groove is connected to the outside, and a drive shaft is rotatably connected in the air guide groove, and an air guide blade is fixedly connected to the outer wall of the drive shaft, both ends of the drive shaft extend through and extend to the outside of the contact plate, and a friction wheel is fixedly connected to the bottom end of the drive shaft, and a dust cleaning groove is opened on the outer wall of the air guide groove.

[0009] In order to facilitate rust removal of the track, preferably, the rust removal assembly includes a liquid storage pan, which is fixed on the top of the contact plate, and a linkage groove is opened on the upper part of the liquid storage pan, a driven runner is fixedly connected in the linkage groove, a driving runner is fixedly connected to the top of the drive shaft, the driving runner and the driven runner are connected by a belt drive, a liquid spray pipe is fixedly connected to the bottom of the inner cavity of the liquid storage pan, a piston plate is slidably connected in the liquid spray pipe, a second spring is fixedly connected between the side wall of the piston plate and the liquid spray pipe, a linkage shaft is rotatably connected to the inner cavity of the liquid storage pan, the top of the linkage shaft passes through the linkage groove and is fixedly connected to the rotating shaft of the driven runner, and a magnetic plate is fixedly connected to the outer wall of the linkage shaft, and the magnetic plate and the piston plate repel each other.

[0010] Furthermore, the liquid spraying pipe is connected to the inner cavity of the liquid storage plate, the side wall of the piston plate is fixedly connected with a liquid guide pipe, both ends of the liquid guide pipe are connected to the inner cavity of the liquid spraying pipe, and a one-way valve is arranged in the liquid guide pipe.

[0011] In order to reduce friction loss, preferably, the cooling component includes an air flow groove, which is opened in the liquid storage plate, and both sides of the inner cavity of the air flow groove are slidably connected with extrusion sliders, and a third spring is fixedly connected between the extrusion slider and the air flow groove, and an extrusion push block is slidably connected to the middle of the air flow groove, and the end side walls of the extrusion push block slide in close contact with the side walls of the extrusion slider, and the side walls of the driven rotor are fixedly connected with a push block, and the push block is movably in contact with the side walls of the extrusion push block, and both ends of the air flow groove are fixedly connected with the first air pipe, and a first air groove is opened in the contact plate, and the first air groove is communicated with the first air pipe.

[0012] Furthermore, second air pipes are fixedly connected to both sides of the air flow groove, a second air groove is opened in the contact plate, and the second air pipe is communicated with the inner cavity of the second air groove.

[0013] Furthermore, the contact surfaces between the extrusion push block and the extrusion sliding block are both wedge-shaped, and the side of the extrusion push block close to the driving wheel is trapezoidal.

[0014] In order to improve the driving effect, preferably, compression grooves are provided at equal intervals on the outer wall of the friction wheel, a fastening plate is slidably connected in the compression groove, a locking groove is provided on both sides of the compression groove, a locking slider is fixedly connected to the outer wall of the fastening plate, the locking slider is slidably connected to the inner cavity of the locking groove, a fourth spring is fixedly connected to the fastening plate and the compression groove, and an injection pipe is connected to the top of the compression groove.

[0015] Preferably, both sides of the mounting plate are fixedly connected to the bottom of the rail train via first bolts, and the mounting buckle is electrically connected to the rail train via second bolts.

[0016] A rail transit grounding method, the steps are as follows:

[0017] S1. Establish electrical connection between the track and the train;

[0018] S2. Dust removal on the track side wall;

[0019] S3, removing rust from the side wall of the track;

[0020] S4. Cooling down the contact plate during forward friction.

[0021] Compared with the prior art, the present invention provides a rail transit grounding device and method, which has the following beneficial effects:

[0022] 1. The rail transit grounding device uses the rebound effect of the first spring to make the contact plate fit tightly on the side wall of the track, which effectively avoids the poor grounding contact caused by the thinning of the contact plate surface due to continuous friction, improves the grounding effect, and smoothly transmits the abnormal current generated by the rail train during operation to the track, and then flows into the earth to achieve grounding, avoiding harm to the human body caused by the current, and also avoiding equipment failure and power fluctuations caused by unstable current, thereby improving the safety and stability of train travel.

[0023] 2. The rail transit grounding device blows air to the track side wall in a directional manner through the friction rotation between the friction wheel and the track side wall, thereby removing dust and preventing dust from adhering to the track side wall, thereby improving the grounding effect between the contact plate and the track side wall.

[0024] 3. The rail transit grounding device, through the rotation of the friction wheel and the repulsion between the magnetic plate and the piston plate, compresses the rust remover in the spray pipe, so that the rust remover is sprayed along the spray pipe to the side wall of the track, and the rust on the side wall of the track is removed under the action of friction and blowing, effectively avoiding the influence of rust on the grounding effect and improving the final grounding effect.

[0025] 4. The rail transit grounding device effectively accelerates the air flow speed on the contact surface between the contact plate and the track through the extrusion action between the push block, the extrusion push block and the extrusion slider, realizes the cooling of the friction heat generated by the contact plate, reduces the thermal wear between the contact plate and the track, and improves the durability of the contact plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a rail transit grounding device proposed by the present invention;

[0027] Figure 2 A schematic diagram of a top view of a partial cross-sectional structure of a rail transit grounding device proposed by the present invention;

[0028] Figure 3 A rail transit grounding device proposed by the present invention Figure 2 A schematic diagram of the enlarged structure of the middle A area;

[0029] Figure 4 A schematic diagram of a side view of a half-section structure of a rail transit grounding device proposed by the present invention;

[0030] Figure 5 A rail transit grounding device proposed by the present invention Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0031] Figure 6 A rail transit grounding device proposed by the present invention Figure 4 Schematic diagram of the enlarged structure of the middle C area;

[0032] Figure 7 A schematic diagram of a partial cross-sectional structure of a rail transit grounding device proposed by the present invention;

[0033] Figure 8 This is a partial top view structural schematic diagram of a rail transit grounding device proposed by the present invention.

[0034] In the figure: 1, mounting plate; 2, positioning rod; 21, limiting slide plate; 3, contact plate; 31, first spring; 32, connecting wire; 33, mounting buckle; 4, dust cleaning assembly; 41, air guide groove; 42, driving shaft; 43, air guide blade; 44, friction wheel; 45, dust cleaning groove; 5, rust removal assembly; 51, liquid storage tray; 52, linkage groove; 521, driven rotating wheel; 522, driving rotating wheel; 53, liquid spraying pipe; 531, second spring; 54, piston plate; 54 1. Liquid guide tube; 55. Linkage shaft; 551. Magnetic plate; 6. Cooling component; 61. Air flow groove; 611. First air pipe; 612. Second air pipe; 62. Extrusion slider; 63. Third spring; 64. Extrusion push block; 65. Push block; 66. First air groove; 661. Second air groove; 7. Compression groove; 71. Fastening plate; 72. Positioning slide groove; 73. Positioning slider; 74. Fourth spring; 75. Jet pipe; 8. First bolt; 81. Second bolt. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0037] Reference Figure 1-Figure 8 , a rail transit grounding device comprises a mounting plate 1, both sides of the mounting plate 1 are fixedly connected to the bottom of the rail train through first bolts 8, both sides of the mounting plate 1 are fixedly connected with positioning rods 2, the outer wall of the positioning rod 2 is slidably sleeved with a limiting slide 21, the side wall of the limiting slide 21 is fixedly connected with a contact plate 3, a first spring 31 is fixedly connected between the contact plate 3 and the mounting plate 1, a power lead 32 is fixedly connected to the side of the contact plate 3 close to the mounting plate 1, the power lead 32 passes through the mounting plate 1 and is fixedly connected with a mounting buckle 33, and the mounting buckle 33 is electrically connected to the rail train through a second bolt 81, and also comprises: a dust cleaning component 4, the dust cleaning component 4 is arranged in the contact plate 3, and is used to clean the dust attached to the side wall of the track; a rust removal component 5, the rust removal component 5 is arranged on the contact plate 3, and is used to remove rust on the side wall of the track; a cooling component 6, the cooling component 6 is arranged on the contact plate 3, and is used to cool the friction surface of the contact plate 3.

[0038] Through the arrangement of the above-mentioned structure, the abnormal current generated during the operation of the rail train can be transmitted to the track through the power lead 32 and the contact plate 3, and then flow into the earth to achieve grounding, thereby avoiding harm to the human body caused by the current, and also avoiding equipment failure and power fluctuations caused by unstable current, thereby improving the safety and stability of train operation; the arrangement of the dust cleaning component 4 prevents dust from adhering to the side wall of the track, thereby improving the grounding effect between the contact plate 3 and the side wall of the track, and utilizing the arrangement of the rust removal component 5 to effectively avoid the influence of rust on the grounding effect, thereby improving the final grounding effect; and the arrangement of the cooling component 6 realizes the cooling of the friction heat generated by the contact plate 3, thereby reducing the thermal wear between the contact plate 3 and the track, thereby improving the durability of the contact plate 3.

[0039] Reference Figure 1 , Figure 4 and Figure 7 The dust cleaning component 4 includes an air guide groove 41, which is provided inside the two ends of the contact plate 3. The top of the inner cavity of the air guide groove 41 is connected to the outside. A driving shaft 42 is rotatably connected in the air guide groove 41. An air guide blade 43 is fixedly connected to the outer wall of the driving shaft 42. Both ends of the driving shaft 42 extend through and extend to the outside of the contact plate 3. A friction wheel 44 is fixedly connected to the bottom end of the driving shaft 42. A dust cleaning groove 45 is provided on the outer wall of the air guide groove 41.

[0040] Through the arrangement of the above structure, during the running of the train, the friction wheel 44 and the contact plate 3 are both in contact with the side wall of the track. Under the action of the friction force, the friction wheel 44 will rotate, thereby driving the drive shaft 42 and the air guide blade 43 to rotate, thereby generating a gas flow effect in the air guide groove 41, so that the air flow enters from the top of the cavity of the air guide groove 41, and then flows out along the dust cleaning groove 45, so as to blow air in a directional manner on the side wall of the track to achieve dust removal, avoid dust adhering to the side wall of the track, and improve the grounding effect between the contact plate 3 and the side wall of the track.

[0041] Reference Figure 2 , Figure 4 and Figure 5The rust removal component 5 includes a liquid storage pan 51, which is fixed on the top of the contact plate 3. A linkage groove 52 is provided on the upper part of the liquid storage pan 51. A driven runner 521 is fixedly connected in the linkage groove 52. A driving runner 522 is fixedly connected to the top of the drive shaft 42. The driving runner 522 and the driven runner 521 are connected through a belt transmission. A liquid spraying pipe 53 is fixedly connected to the bottom of the inner cavity of the liquid storage pan 51. A piston plate 54 is slidably connected in the liquid spraying pipe 53. The side wall of the piston plate 54 is fixedly connected to the liquid spraying pipe 53. A second spring 531 is connected, and the inner cavity of the liquid storage disk 51 is rotatably connected with a linkage shaft 55. The top of the linkage shaft 55 penetrates into the linkage groove 52 and is fixedly connected to the rotating shaft of the driven rotating wheel 521. The outer wall of the linkage shaft 55 is fixedly connected with a magnetic plate 551. The magnetic plates 551 and the piston plate 54 repel each other. The liquid spraying pipe 53 is connected with the inner cavity of the liquid storage disk 51. The side wall of the piston plate 54 is fixedly connected with a liquid guide pipe 541. Both ends of the liquid guide pipe 541 are connected with the inner cavity of the liquid spraying pipe 53, and a one-way valve is arranged in the liquid guide pipe 541.

[0042] It should be noted that the one-way valve in the liquid guide tube 541 can only allow the rust removal liquid in the liquid storage tray 51 to move to the inner cavity of the output end of the liquid spray tube 53;

[0043] By setting the above structure, when the driving shaft 42 rotates, the driving wheel 522 and the driven wheel 521 will simultaneously drive the linkage shaft 55 to rotate, so that the magnetic plate 551 rotates in the linkage groove 52. When the magnetic plate 551 and the piston plate 54 are in the magnetic contact area, the repulsive effect of the magnetic plate 551 and the piston plate 54 will push the piston plate 54 to move toward the output end of the spray pipe 53, thereby compressing the rust remover in the spray pipe 53, so that the rust remover is sprayed toward the side wall of the track along the spray pipe 53 and frictionally contacts the piston plate 54. Under the action of blowing, the rust on the side wall of the track is removed, which effectively avoids the influence of rust on the grounding effect and improves the final grounding effect. When the magnetic plate 551 and the piston plate 54 are out of the magnetic contact area, the piston plate 54 will be reset under the rebound action of the second spring 531, and the one-way valve in the liquid guide tube 541 will be opened under the resistance effect of the rust remover in the liquid storage tray 51, so that the rust remover in the liquid storage tray 51 is replenished to the spraying end of the liquid spray tube 53, ensuring the continuation of the subsequent rust removal work and improving the rust removal effect.

[0044] Reference Figure 2 , Figure 3 and Figure 7The cooling component 6 includes an air flow groove 61, which is opened in the liquid storage tray 51. Both sides of the inner cavity of the air flow groove 61 are slidably connected with an extrusion slider 62. A third spring 63 is fixedly connected between the extrusion slider 62 and the air flow groove 61. An extrusion push block 64 is slidably connected to the middle of the air flow groove 61. The end side wall of the extrusion push block 64 slides in contact with the side wall of the extrusion slider 62. The side wall of the driven rotating wheel 521 is fixedly connected with a push block 65. The push block 65 is movably connected to the side wall of the extrusion push block 64. The two ends of the air flow groove 61 are fixedly connected with the first air pipe 611, the contact plate 3 is provided with a first air groove 66, the first air groove 66 is communicated with the first air pipe 611, the two sides of the air flow groove 61 are fixedly connected with the second air pipe 612, the contact plate 3 is provided with a second air groove 661, the second air pipe 612 is communicated with the inner cavity of the second air groove 661, the contact surfaces of the extrusion push block 64 and the extrusion slider 62 are both wedge-shaped, and the side of the extrusion push block 64 close to the active runner 522 is trapezoidal;

[0045] By setting the above structure, during the rotation of the driven wheel 521, the pushing block 65 of its side wall will contact and squeeze the side wall of the extrusion pushing block 64, so that the extrusion pushing block 64 moves into the air flow groove 61 and pushes the extrusion sliding block 62 to move to both sides, thereby compressing the airflow in the cavities on both sides of the air flow groove 61, so that the airflow blows toward the side walls of the track along the first air groove 66 and the second air groove 661 respectively, and when the pushing block 65 is out of contact with the extrusion pushing block 64, under the rebound action of the third spring 63, the extrusion sliding block 62 will be reset, so that suction will be generated in the cavities on both sides of the air flow groove 61, thereby drawing the airflow in along the first air groove 66 and the second air groove 661. In summary, the airflow speed on the contact surface between the contact plate 3 and the track is effectively accelerated, the friction heat generated by the contact plate 3 is cooled, the thermal wear between the contact plate 3 and the track is reduced, and the durability of the contact plate 3 is improved.

[0046] Reference Figure 4 , Figure 6 , wherein compression grooves 7 are provided at equal intervals on the outer wall of the friction wheel 44, a fastening plate 71 is slidably connected in the compression groove 7, a positioning slide groove 72 is provided on both sides of the compression groove 7, a positioning slider 73 is fixedly connected to the outer wall of the fastening plate 71, the positioning slider 73 is slidably connected to the inner cavity of the positioning slide groove 72, a fourth spring 74 is fixedly connected to the fastening plate 71 and the compression groove 7, and an air injection pipe 75 is connected to the top of the compression groove 7;

[0047] Through the arrangement of the above structure, when the friction wheel 44 rotates, the track side wall will also compress the fastening plate 71, causing it to retract into the compression groove 7, and thereby push the airflow in the compression groove 7 out along the air injection pipe 75, further improving the dust removal effect. When the fastening plate 71 is completely retracted into the compression groove 7, the friction effect between the friction wheel 44 and the track side wall will be effectively improved under the rebound action of the fourth spring 74. Therefore, when the friction wheel 44 is partially worn, it can still be rotated smoothly and quickly, ensuring the subsequent linkage effect.

[0048] Reference Figure 1-Figure 8 In the present invention, when in use, the contact plate 3 is firstly fitted on the side wall of the track, and the first spring 31 is compressed, and then the mounting plate 1 is fixed to the bottom of the track train through the first bolts 8 on both sides. At this time, under the rebound effect of the first spring 31, the contact plate 3 is tightly fitted on the side wall of the track, which effectively avoids the situation where the surface of the contact plate 3 becomes thinner due to continuous friction and causes poor grounding contact, thereby improving the grounding effect, and then the mounting buckle 33 at the end of the power lead 32 is electrically connected to the track train through the second bolt 81, so that the abnormal current generated during the operation of the track train can be transmitted to the track through the power lead 32 and the contact plate 3, and then flows into the earth to achieve grounding, thereby avoiding harm to the human body caused by the current, and also avoiding equipment failure and power fluctuations caused by unstable current, thereby improving the safety and stability of train travel;

[0049] During the running of the train, the friction wheel 44 and the contact plate 3 are both in contact with the side wall of the track. Under the action of friction, the friction wheel 44 will rotate, thereby driving the drive shaft 42 and the air guide blade 43 to rotate, thereby generating a gas flow effect in the air guide groove 41, so that the air flow enters from the top of the air guide groove 41 cavity, and then flows out along the dust cleaning groove 45, so as to blow air in a directional manner on the side wall of the track to achieve dust removal, prevent dust from adhering to the side wall of the track, and improve the grounding effect between the contact plate 3 and the side wall of the track; and the side wall of the track will also compress the fastening plate 71, causing it to retract into the compression groove 7, and thereby push the air flow in the compression groove 7 out along the jet pipe 75, further improving the dust removal effect. When the fastening plate 71 is fully retracted After entering the compression groove 7, the friction effect between the friction wheel 44 and the side wall of the track will be effectively improved under the rebound effect of the fourth spring 74. Therefore, when the friction wheel 44 is partially worn, it can also be made to rotate smoothly and quickly, ensuring the subsequent linkage effect; when the drive shaft 42 rotates, the transmission effect of the active runner 522 and the driven runner 521 will simultaneously drive the linkage shaft 55 to rotate, so that the magnetic plate 551 rotates in the linkage groove 52, and when the magnetic plate 551 and the piston plate 54 are in the magnetic contact area, the repulsive effect of the magnetic plate 551 and the piston plate 54 will push the piston plate 54 to move toward the output end of the spray pipe 53, thereby compressing the rust remover in the spray pipe 53, so that the rust remover The rust remover is sprayed toward the side wall of the track along the spray pipe 53, and the rust on the side wall of the track is removed under the action of friction and blowing, which effectively avoids the influence of rust on the grounding effect and improves the final grounding effect. When the magnetic plate 551 and the piston plate 54 are separated from the magnetic contact area, the piston plate 54 will be reset under the rebound action of the second spring 531, and the one-way valve in the liquid guide pipe 541 will be opened under the resistance effect of the rust remover in the liquid storage tray 51, so that the rust remover in the liquid storage tray 51 is replenished into the spraying end of the spray pipe 53, ensuring the continuous progress of the subsequent rust removal work and improving the rust removal effect. In the process of the rotation of the driven runner 521, the pushing block 65 of its side wall will contact and squeeze the side wall of the extrusion push block 64. , so that the extrusion push block 64 moves into the air flow groove 61, and pushes the extrusion slider 62 to move to both sides, thereby compressing the airflow in the cavities on both sides of the air flow groove 61, so that the airflow blows toward the side walls of the track along the first air groove 66 and the second air groove 661 respectively, and when the push block 65 is out of contact with the extrusion push block 64, under the rebound action of the third spring 63, the extrusion slider 62 will be reset, so that suction will be generated in the cavities on both sides of the air flow groove 61, thereby drawing the airflow in along the first air groove 66 and the second air groove 661. In summary, the airflow speed on the contact surface between the contact plate 3 and the track is effectively accelerated, the friction heat generated by the contact plate 3 is cooled, the thermal wear between the contact plate 3 and the track is reduced, and the durability of the contact plate 3 is improved. Example

[0050] Basically the same as the first embodiment, a rail transit grounding method is proposed on the basis of the first embodiment.

[0051] Reference Figure 1-Figure 8 , a rail transit grounding method, the steps are as follows:

[0052] S1. Establish electrical connection between the track and the train;

[0053] First, the contact plate 3 is fitted on the side wall of the track, and the first spring 31 is compressed. Then, the mounting plate 1 is fixed to the bottom of the track train through the first bolts 8 on both sides. At this time, under the rebound effect of the first spring 31, the contact plate 3 is tightly fitted on the side wall of the track, which effectively avoids the poor grounding contact caused by the surface of the contact plate 3 becoming thinner due to continuous friction, thereby improving the grounding effect. Then, the mounting buckle 33 at the end of the power lead 32 is electrically connected to the track train through the second bolt 81, so that the abnormal current generated during the operation of the track train can be transferred to the track through the power lead 32 and the contact plate 3, and then flow into the earth to achieve grounding, thereby avoiding harm to the human body caused by the current, and also avoiding equipment failure and power fluctuations caused by unstable current, thereby improving the safety and stability of train travel;

[0054] S2. Dust removal on the track side wall;

[0055] During the running of the train, the friction wheel 44 and the contact plate 3 are both in contact with the side wall of the track. Under the action of the friction force, the friction wheel 44 will rotate, thereby driving the driving shaft 42 and the air guide blade 43 to rotate, thereby generating a gas flow effect in the air guide groove 41, so that the air flow enters from the top of the air guide groove 41 cavity, and then flows out along the dust cleaning groove 45, thereby blowing air to the side wall of the track in a directional manner to achieve dust removal, prevent dust from adhering to the side wall of the track, and improve the grounding effect between the contact plate 3 and the side wall of the track;

[0056] The track side wall will also compress the fastening plate 71, causing it to retract into the compression groove 7, and thereby push the airflow in the compression groove 7 out along the air injection pipe 75, further improving the dust removal effect. When the fastening plate 71 is completely retracted into the compression groove 7, the friction effect between the friction wheel 44 and the track side wall will be effectively improved under the rebound effect of the fourth spring 74. Therefore, when the friction wheel 44 is partially worn, it can also be smoothly and quickly rotated, ensuring the subsequent linkage effect.

[0057] S3, removing rust from the side wall of the track;

[0058] When the driving shaft 42 rotates, the driving wheel 522 and the driven wheel 521 drive the linkage shaft 55 to rotate at the same time, so that the magnetic plate 551 rotates in the linkage groove 52. When the magnetic plate 551 and the piston plate 54 are in the magnetic contact area, the repulsive effect of the magnetic plate 551 and the piston plate 54 will push the piston plate 54 to move toward the output end of the spray pipe 53, thereby compressing the rust remover in the spray pipe 53, so that the rust remover is sprayed toward the side wall of the track along the spray pipe 53, and under the action of friction and blowing, the rust remover is compressed. Under the condition that the rust on the side wall of the track is removed, the influence of the rust on the grounding effect is effectively avoided, and the final grounding effect is improved. When the magnetic plate 551 and the piston plate 54 are separated from the magnetic contact area, the piston plate 54 will be reset under the rebound effect of the second spring 531, and the one-way valve in the liquid guide tube 541 will be opened under the resistance effect of the rust remover in the liquid storage tray 51, so that the rust remover in the liquid storage tray 51 is replenished into the spraying end of the liquid spraying tube 53, ensuring the continuation of the subsequent rust removal work and improving the rust removal effect.

[0059] S4, cooling the contact plate 3 in the forward friction state;

[0060] During the rotation of the driven wheel 521, the pushing block 65 on its side wall will contact and squeeze the side wall of the extrusion pushing block 64, so that the extrusion pushing block 64 moves into the airflow groove 61 and pushes the extrusion sliding block 62 to move to both sides, thereby compressing the airflow in the cavities on both sides of the airflow groove 61, so that the airflow blows toward the side walls of the track along the first air groove 66 and the second air groove 661 respectively, and when the pushing block 65 is out of contact with the extrusion pushing block 64, under the rebound action of the third spring 63, the extrusion sliding block 62 will be reset, so that suction will be generated in the cavities on both sides of the airflow groove 61, thereby drawing the airflow in along the first air groove 66 and the second air groove 661. In summary, the airflow speed on the contact surface between the contact plate 3 and the track is effectively accelerated, the friction heat generated by the contact plate 3 is cooled, the thermal wear between the contact plate 3 and the track is reduced, and the durability of the contact plate 3 is improved.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rail transit grounding device, comprising a mounting plate (1), characterized in that: Both sides of the mounting plate (1) are fixedly connected to positioning rods (2), the outer wall of the positioning rod (2) is slidably sleeved with a limiting slide plate (21), the side wall of the limiting slide plate (21) is fixedly connected to a contact plate (3), a first spring (31) is fixedly connected between the contact plate (3) and the mounting plate (1), a side of the contact plate (3) close to the mounting plate (1) is fixedly connected to an electrical lead (32), the electrical lead (32) passes through the mounting plate (1) and is fixedly connected to a mounting buckle (33), and further comprises: A dust cleaning component (4), the dust cleaning component (4) being arranged inside the contact plate (3) and being used to clean dust attached to the side wall of the track; A rust removal component (5), the rust removal component (5) being arranged on the contact plate (3) and used for performing rust removal treatment on the side wall of the track; A cooling component (6), the cooling component (6) being arranged on the contact plate (3) and being used to cool the friction surface of the contact plate (3); The dust cleaning component (4) comprises an air guide groove (41), the air guide groove (41) being provided inside both ends of the contact plate (3), the top of the inner cavity of the air guide groove (41) being connected to the outside, a drive shaft (42) being rotatably connected inside the air guide groove (41), an outer wall of the drive shaft (42) being fixedly connected to an air guide blade (43), both ends of the drive shaft (42) extending through to the outside of the contact plate (3), a friction wheel (44) being fixedly connected to the bottom end of the drive shaft (42), and a dust cleaning groove (45) being provided on the outer wall of the air guide groove (41); The rust removal assembly (5) comprises a liquid storage pan (51), the liquid storage pan (51) being fixed on the top of the contact plate (3), a linkage groove (52) being provided on the top of the liquid storage pan (51), a driven rotating wheel (521) being fixedly connected in the linkage groove (52), a driving rotating wheel (522) being fixedly connected to the top of the drive shaft (42), the driving rotating wheel (522) and the driven rotating wheel (521) being connected via a belt drive, a liquid spraying pipe (53) being fixedly connected to the bottom of the inner cavity of the liquid storage pan (51), A piston plate (54) is slidably connected inside the liquid spraying pipe (53), a second spring (531) is fixedly connected between the side wall of the piston plate (54) and the liquid spraying pipe (53), a linkage shaft (55) is rotatably connected to the inner cavity of the liquid storage plate (51), the top of the linkage shaft (55) penetrates into the linkage groove (52) and is fixedly connected to the rotating shaft of the driven rotating wheel (521), a magnetic plate (551) is fixedly connected to the outer wall of the linkage shaft (55), and the magnetic plate (551) and the piston plate (54) repel each other magnetically; The cooling component (6) comprises an air flow groove (61), the air flow groove (61) being arranged in the liquid storage tray (51), and both sides of the inner cavity of the air flow groove (61) being slidably connected with an extrusion slider (62), and a third spring (63) being fixedly connected between the extrusion slider (62) and the air flow groove (61), and an extrusion push block (64) being slidably connected in the middle of the air flow groove (61), and the end side wall of the extrusion push block (64) slidingly fits with the side wall of the extrusion slider (62), and a push block (65) being fixedly connected to the side wall of the driven rotating wheel (521), and the push block (65) being in active contact with the side wall of the extrusion push block (64), and both ends of the air flow groove (61) being fixedly connected with a first air pipe (611), and a first air groove (66) being arranged in the contact plate (3), and the first air groove (66) being in communication with the first air pipe (611).

2. A rail transit grounding device according to claim 1, characterized in that: The liquid spraying pipe (53) is in communication with the inner cavity of the liquid storage plate (51); a liquid guide pipe (541) is fixedly connected to the side wall of the piston plate (54); both ends of the liquid guide pipe (541) are in communication with the inner cavity of the liquid spraying pipe (53); and a one-way valve is provided in the liquid guide pipe (541).

3. A rail transit grounding device according to claim 1, characterized in that: Second air pipes (612) are fixedly connected to both sides of the air flow groove (61), a second air groove (661) is provided in the contact plate (3), and the second air pipe (612) is in communication with the inner cavity of the second air groove (661).

4. A rail transit grounding device according to claim 1, characterized in that: The contact surfaces between the extrusion push block (64) and the extrusion sliding block (62) are both wedge-shaped, and the side of the extrusion push block (64) close to the driving rotating wheel (522) is trapezoidal.

5. A rail transit grounding device according to claim 1, characterized in that: The outer wall of the friction wheel (44) is provided with compression grooves (7) at equal intervals, a fastening plate (71) is slidably connected in the compression groove (7), a positioning slide groove (72) is provided on both sides of the compression groove (7), a positioning slider (73) is fixedly connected to the outer wall of the fastening plate (71), the positioning slider (73) is slidably connected to the inner cavity of the positioning slide groove (72), a fourth spring (74) is fixedly connected between the fastening plate (71) and the compression groove (7), and a jet pipe (75) is connected to the top of the compression groove (7).

6. A rail transit grounding device according to claim 1, characterized in that: Both sides of the mounting plate (1) are fixedly connected to the bottom of the rail vehicle via first bolts (8), and the mounting buckle (33) is electrically connected to the rail vehicle via second bolts (81).

7. A rail transit grounding method, using a rail transit grounding device as claimed in any one of claims 1 to 6, characterized in that: Here are the steps: S1. Establish electrical connection between the track and the train; S2. Dust removal on the track side wall; S3, removing rust from the side wall of the track; S4, cooling the contact plate (3) during forward friction.

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