Automatic control system for wheel-rail lubrication device on curved railway line

Abstract

The invention discloses an automatic control system for a railway curved line wheel-rail lubrication device, which relates to the technical field of railway maintenance, and includes an oil pump assembly, a driving mechanism, a sensing piece, an extension limit switch, a retraction limit switch, a PLC, and a photoelectric sensing switch; the oil pump assembly includes an oil storage tank and a piston rod; an oil storage cavity is provided inside the oil storage tank; the driving mechanism can drive the piston rod to reciprocate, and squeeze the grease in the oil storage cavity out of the oil storage cavity; the sensing piece is fixedly connected to the driving mechanism or the piston rod, the extension limit switch corresponds to the extension limit position of the piston rod, and the retraction limit switch corresponds to the retraction limit position of the piston rod; the PLC can control the driving mechanism to rotate forward or reverse; the sensing piece is used to limit the moving position of the piston rod between the extension limit switch and the retraction limit switch; and the photoelectric sensing switch is used to detect that the locomotive vehicle passes through the detection area. The advantages of the invention are: it can realize intelligent automatic operation.

Description

Technical Field

[0001] The invention relates to the technical field of railway maintenance, and in particular to an automatic control system for a wheel-rail lubrication device on a railway curved line. Background Art

[0002] In recent years, with the continuous increase in train speed and axle weight, the wear of rails and wheel flanges has also increased accordingly. When locomotives and vehicles are running in curved sections, the side wear of rails is more prominent, and the maintenance cycle of wheelsets is shortened accordingly. The wheel and rail wear on curved lines is faster. If the wear is too large and not discovered in time, it will cause serious traffic accidents. In the past, manual inspection and replacement were relied on by the engineering section, which was time-consuming, labor-intensive, and costly. The terrain of curved lines is complex, which is not suitable for the installation of large-scale line maintenance equipment, and the layout of power supply lines is inconvenient. Patent CN203198977U discloses an oiling device for a rail oiler, including an oil guide plate, an oil guide port provided on the oil guide plate, and a mounting frame. The oil guide plate is installed on the mounting frame, and the mounting frame is installed on the outside of the track. The oil spraying end of the oil guide plate is against the gap between the track and the wheel. The device cannot realize intelligent automatic operation. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automatic control system for a railway curved line wheel-rail lubrication device which can realize intelligent automatic operation.

[0004] The present invention solves the above technical problems by the following technical means: an automatic control system for a wheel-rail lubrication device on a railway curved line, comprising an oil pump assembly, a drive mechanism, a sensor plate (18), an extension limit switch, a retraction limit switch, a PLC, a first intermediate relay, a second intermediate relay, and a photoelectric sensor switch; the oil pump assembly comprises an oil storage tank (1) and a piston rod (7); an oil storage cavity is provided inside the oil storage tank (1); the drive mechanism can drive the piston rod (7) to reciprocate and squeeze the grease in the oil storage cavity out of the oil storage cavity; the sensor plate (18) is fixedly connected to the drive mechanism or the piston rod (7); the extension limit switch corresponds to the extension limit position of the piston rod (7), and the retraction limit switch corresponds to the retraction limit position of the piston rod (7); the PLC can control the drive mechanism to rotate forward or reverse; the sensor plate (18) is used to limit the moving position of the piston rod (7) between the extension limit switch and the retraction limit switch; and the photoelectric sensor switch is used to detect the passage of a locomotive vehicle through a detection area.

[0005] When the locomotive vehicle passes through the detection area of ​​the photoelectric sensor switch, the drive mechanism drives the piston rod to extend forward; when the piston rod reaches the extension limit position, the extension limit switch senses the sensor plate, and the PLC controls the drive mechanism to stop; after a certain time is set, the PLC automatically controls the drive mechanism to drive the piston rod backward; when the piston rod reaches the retraction limit position, the retraction limit switch senses the sensor plate, and the PLC controls the drive mechanism to stop, completing a flow of oil supply.

[0006] The automatic control system of the railway curved line wheel-rail lubrication device of the present invention realizes an unmanned intelligent automatic operation mode, saving manpower; the wheels and rails of the curved line can be lubricated when the locomotive vehicle passes through the curved line, which greatly solves the problem of side wear of the wheel and rail on a small radius curve; the strong noise generated by the friction between the train wheel set and the rail is reduced, and the environment is protected; the service life of the curved wheel and rail is extended, which greatly ensures driving safety and reduces the manpower and material resources wasted on the replacement due to wheel and rail wear; compared with large-scale line maintenance equipment, the equipment purchase cost is reduced.

[0007] As an optimized technical solution, the automatic control system of the railway curved line wheel-rail lubrication device also includes a conversion switch, a forward button, and a backward button. The conversion switch is used to switch between the automatic mode and the manual mode. The forward button and the backward button are respectively used to control the driving mechanism to drive the piston rod (7) forward and backward. The conversion switch, the forward button, and the backward button are respectively connected to the input end of the PLC. The automatic mode or the manual mode can be selected by the conversion switch. The manual mode is used during debugging and testing to adjust the oiling amount accordingly.

[0008] As an optimized technical solution, the automatic control system of the railway curved line wheel rail lubrication device also includes a solar power generation panel (20), a storage battery (21), and a solar panel solar controller (22). The solar power generation panel (20) and the storage battery (21) are respectively connected to the solar panel solar controller (22), and the main circuit of the driving mechanism is connected to the power provided by the solar panel solar controller (22). The solar power supply method is adopted to reduce the installation conditions of the equipment, solve the problem of inconvenient layout of the power supply line, and facilitate the popularization and use of the equipment.

[0009] As an optimized technical solution, the automatic control system of the railway curved line wheel-rail lubrication device also includes a control cabinet (19), the control cabinet (19) is arranged on one side of the railway curved line wheel-rail, the oil pump assembly, the drive mechanism, the induction sheet (18), the solar panel solar controller (22), the extension limit switch, the retraction limit switch, the PLC, the first intermediate relay, and the second intermediate relay are all installed inside the cabinet of the control cabinet (19), the photoelectric induction switch is installed on the cabinet door of the control cabinet (19), the storage battery (21) is installed in the drawer of the control cabinet (19), and the solar power generation panel (20) is fixedly connected to the outside of the control cabinet (19).

[0010] As an optimized technical solution, the driving mechanism includes a driving motor (8), a driving rack (15), and a coupling (16); the driving motor (8) is a DC reciprocating motor; the driving rack (15) can perform reciprocating motion in the driving motor (8); and the driving rack (15) is fixedly connected to the piston rod (7) via the coupling (16).

[0011] As an optimized technical solution, the automatic control system of the railway curved line wheel-rail lubrication device also includes a guide seat (17), the guide seat (17) is fixedly connected to one side of the oil storage tank (1), the piston rod (7) and the driving rack (15) respectively penetrate into the internal cavity of the guide seat (17) from both sides of the guide seat (17), and the extension limit switch and the retraction limit switch are respectively fixedly connected to the top of the guide seat (17).

[0012] As an optimized technical solution, the oil pump assembly also includes a guide sleeve (2), a hydraulic one-way valve (4), a drive motor (8), a first oil seal (9), an oil coating device (13), and an oil supply pipe (14); the guide sleeve (2) is fixedly connected to the oil storage tank (1), and an oil outlet passage is provided inside the guide sleeve (2); the hydraulic one-way valve (4) is fixedly connected to the guide sleeve (2); the drive motor (8) can drive the piston rod (7) to reciprocate between the oil storage cavity and the oil outlet passage; the first oil seal (9) is fixedly connected to the piston rod (7), and the first oil seal (9) can squeeze the grease in the oil storage cavity from the oil outlet passage into the hydraulic one-way valve (4) as the piston rod (7) moves; the oil supply pipe (14) is connected between the oil outlet of the hydraulic one-way valve (4) and the oil inlet of the oil coating device (13).

[0013] Grease enters the hydraulic one-way valve under the pressure of the piston rod, and the oil output can be better controlled through the guide sleeve, saving energy; the grease enters the oiling device after passing through the oil outlet channel, the hydraulic one-way valve, and the oil supply pipe in turn, and is transported to the wheel-rail through the oiling device, so as to lubricate the wheel-rail on the curved line.

[0014] As an optimized technical solution, the automatic control system of the railway curved line wheel-rail lubrication device also includes a guide shaft (5) and a second oil seal (10); the guide sleeve (2) is fixedly connected to the side wall of the oil storage tank (1), the guide shaft (5) is located in the oil storage cavity and fixedly connected to the side wall of the oil storage tank (1) opposite to the guide sleeve (2), and a guide hole is provided on the guide shaft (5); one end of the piston rod (7) passes through the side wall of the oil storage tank (1) and the guide hole in sequence to enter the oil storage cavity, and the other end is located outside the oil storage tank (1); the second oil seal (10) is fixedly connected to the guide hole, and the second oil seal (10) is sleeved on the outer ring of the piston rod (7) and blocks the gap between the piston rod (7) and the inner wall of the guide shaft (5).

[0015] As an optimized technical solution, the automatic control system of the railway curved line wheel-rail lubrication device also includes a third oil seal (11); the guide hole is stepped, and the cross-sectional size of the guide hole decreases step by step from the connection side of the guide shaft (5) and the oil storage tank (1) to the other side; the second oil seal (10) is fixedly connected in the first stage of the guide hole close to the connection side of the guide shaft (5) and the oil storage tank (1); the third oil seal (11) is fixedly connected in the second stage of the guide hole adjacent to the first stage, and the third oil seal (11) is sleeved on the outer ring of the piston rod (7) and blocks the gap between the piston rod (7) and the inner wall of the guide shaft (5).

[0016] As an optimized technical solution, the automatic control system of the railway curved line wheel-rail lubrication device also includes a first pressing plate (3) and a second pressing plate (6); one end of the guide sleeve (2) is located in the oil storage cavity, and the other end is located outside the oil storage tank (1); the center hole of the first pressing plate (3) is sleeved on the end of the guide sleeve (2) located outside the oil storage tank (1), and the first pressing plate (3) is fixedly connected to the oil storage tank (1) and the guide sleeve (2) in sequence through fasteners; the second pressing plate (6) is located on the side of the guide shaft (5) facing the guide sleeve (2), and the second pressing plate (6) is fixedly connected to the guide shaft (5) and the oil storage tank (1) in sequence through fasteners.

[0017] The advantages of the present invention are:

[0018] 1. It realizes the unmanned intelligent automatic operation mode, saving manpower; it can lubricate the wheels and rails of the curved line when the locomotive passes through the curved line, which greatly solves the problem of side wear of the wheels and rails on small radius curves; it reduces the strong noise caused by the friction between the train wheels and the rails, and protects the environment; it extends the service life of the curved wheels and rails, greatly ensures driving safety, and reduces the manpower and material resources wasted on replacement due to wheel and rail wear; compared with large-scale line maintenance equipment, it reduces the equipment purchase cost.

[0019] 2. Automatic mode or manual mode can be selected through the conversion switch. Manual mode is used during debugging and testing to adjust the amount of oil applied.

[0020] 3. The use of solar power supply reduces the installation conditions of the equipment, solves the problem of inconvenient layout of power lines, and facilitates the promotion and use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the running-in area between rail and wheel.

[0022] Figure 2 It is a schematic structural diagram of an oil pump assembly according to an embodiment of the present invention.

[0023] Figure 3 It is a schematic structural diagram of a guide sleeve according to an embodiment of the present invention.

[0024] Figure 4 It is a front view schematic diagram of an oiling device according to an embodiment of the present invention being fixedly connected to the inner side of a wheel rail of a curved railway line through a fixing device.

[0025] Figure 5 It is a schematic rear view of a control cabinet according to an embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of the internal structure of the control cabinet according to an embodiment of the present invention.

[0027] Figure 7 The figure is a circuit diagram of a solar controller for a battery panel according to an embodiment of the present invention.

[0028] Figure 8 The invention discloses a circuit diagram of an automatic control system for a wheel-rail lubrication device for a railway curved line according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1 As shown, the shaded area is the running-in area between the wheel, rail and wheel when the wheel passes through a curved railway line. The vertical movement and large lateral force between the wheel and rail are the causes of wear, and the sliding friction in the contact area between the wheel and rail is the condition for wear.

[0031] like Figures 2 to 6 As shown, the automatic control system of the wheel-rail lubrication device of the railway curved line includes an oil pump assembly, a driving mechanism, a fixing device 12, an oiling device 13, an oil supply pipe 14, a guide seat 17, a sensor sheet 18, a control cabinet 19, a solar power generation panel 20, a battery 21, a solar panel solar controller 22, an extension limit switch SQ2, a retraction limit switch SQ3, a PLC, a main circuit breaker QF, a first intermediate relay K1, a second intermediate relay K2, a photoelectric sensor switch SQ1, a conversion switch S1, a forward button S2, and a reverse button S3.

[0032] The oil pump assembly includes an oil storage tank 1, a guide sleeve 2, a first pressing plate 3, a hydraulic one-way valve 4, a guide shaft 5, a second pressing plate 6, a piston rod 7, a first oil seal 9, a second oil seal 10, and a third oil seal 11.

[0033] The oil delivery mechanism includes a fixing device 12 , an oil coating device 13 , and an oil supply pipe 14 .

[0034] The driving mechanism includes a driving motor 8 , a driving rack 15 , and a coupling 16 .

[0035] like Figure 2 , Figure 3 As shown, an oil storage cavity is provided inside the oil storage tank 1, and the effective volume of the oil storage cavity is 40L.

[0036] The guide sleeve 2 is fixedly connected to the side wall of the oil storage tank 1, and an oil outlet channel is provided inside the guide sleeve 2; Figure 3 As shown, the oil outlet passage includes an oil inlet section 201 and an oil outlet section 202, the oil inlet section 201 is connected to the oil storage cavity, and the oil outlet section 202 is connected to the oil inlet section 201; the guide sleeve 2 is provided with an end of the oil inlet section 201 located in the oil storage cavity, and the guide sleeve 2 is provided with an end of the oil outlet section 202 located outside the oil storage tank 1.

[0037] The center hole of the first pressing plate 3 is sleeved on one end of the guide sleeve 2 provided with the oil outlet section 202, and the first pressing plate 3 is fixedly connected to the oil storage tank 1 and the guide sleeve 2 in sequence through fasteners.

[0038] The hydraulic one-way valve 4 is fixedly connected to one end of the guide sleeve 2 provided with an oil outlet section 202 , and the oil outlet passage is located between the oil storage cavity and the hydraulic one-way valve 4 .

[0039] The guide shaft 5 is located in the oil storage cavity and is fixedly connected to the side wall of the oil storage tank 1 opposite to the guide sleeve 2. A guide hole is provided on the guide shaft 5. The guide hole is stepped, and the cross-sectional size of the guide hole decreases step by step from the connection side of the guide shaft 5 and the oil storage tank 1 to the other side.

[0040] The second pressing piece 6 is located on the side of the guide shaft 5 facing the guide sleeve 2 , and the second pressing piece 6 is fixedly connected to the guide shaft 5 and the oil storage tank 1 in sequence through fasteners.

[0041] One end of the piston rod 7 passes through the side wall of the oil storage tank 1, the guide hole and the center hole of the second pressing plate 6 in sequence to enter the oil storage cavity, and the other end of the piston rod 7 is located outside the oil storage tank 1. The driving mechanism can drive the piston rod 7 to reciprocate between the oil storage cavity and the oil outlet channel.

[0042] The driving motor 8 is a DC reciprocating motor. The driving rack 15 can make reciprocating motion in the driving motor 8 . The driving rack 15 is fixedly connected to one end of the piston rod 7 located outside the oil storage tank 1 through a coupling 16 .

[0043] The first oil seal 9 is fixedly connected to the piston rod 7. The first oil seal 9 can squeeze the grease in the oil storage cavity from the oil outlet channel into the hydraulic one-way valve 4 as the piston rod 7 moves. When the first oil seal 9 is located in the oil inlet section 201, a gap is provided between the first oil seal 9 and the inner wall of the guide sleeve 2. When the first oil seal 9 is located in the oil outlet section 202, it can squeeze the inner wall of the guide sleeve 2.

[0044] The second oil seal 10 is fixedly connected in the guide hole of the guide shaft 5 in the first stage close to the connection side of the guide shaft 5 and the oil storage tank 1. The second oil seal 10 is sleeved on the outer ring of the piston rod 7 and blocks the gap between the piston rod 7 and the inner wall of the guide shaft 5.

[0045] The third oil seal 11 is fixedly connected to the second stage adjacent to the first stage in the guide hole of the guide shaft 5 . The third oil seal 11 is sleeved on the outer ring of the piston rod 7 and blocks the gap between the piston rod 7 and the inner wall of the guide shaft 5 .

[0046] The guide seat 17 is fixedly connected to one side of the oil storage tank 1 , and one end of the piston rod 7 located outside the oil storage tank 1 and the driving rack 15 respectively penetrate into the internal cavity of the guide seat 17 from both sides of the guide seat 17 .

[0047] The induction sheet 18 is fixedly connected to the driving rack 15, and the extension limit switch SQ2 and the retraction limit switch SQ3 are respectively fixedly connected to the top of the guide seat 17. The extension limit switch SQ2 corresponds to the extension limit position of the piston rod 7, and the retraction limit switch SQ3 corresponds to the retraction limit position of the piston rod 7. The induction sheet 18 is used to limit the moving position of the piston rod 7 between the extension limit switch SQ2 and the retraction limit switch SQ3.

[0048] like Figure 4 As shown, the automatic control system of each railway curved line wheel-rail lubrication device includes two oiling devices 13, the two oiling devices 13 are arranged at intervals along the extension direction of the wheel-rail, and the interval is about 1.2m. The oil inlets of the two oiling devices 13 are respectively located on the opposite sides of the two oiling devices 13; each oiling device 13 is fixedly connected to the inner side of the wheel-rail of the railway curved line by two fixing devices 12; the oil supply pipe 14 is made of insulating material, and the oil supply pipe 14 includes an oil supply main pipe and an oil supply branch pipe, one end of the oil supply main pipe is connected to the oil outlet of the hydraulic one-way valve 4, and the other end is respectively connected to two oil supply branch pipes, and the two oil supply branch pipes are respectively connected to the oil inlets of the two oiling devices 13, and the oil supply branch pipe between the two oiling devices 13 is straightened and fixed on the lower end surface of the wheel-rail or the sleeper.

[0049] When the driving mechanism 8 rotates forward, the piston rod 7 moves from the oil inlet section 201 to the oil outlet section 202. When the first oil seal 9 enters the oil inlet section 201 along with the movement of the piston rod 7, the grease is squeezed from the oil storage cavity to the oil inlet section 201. When the first oil seal 9 enters the oil outlet section 202, it squeezes the inner wall of the guide sleeve 2, and squeezes the grease in the oil storage cavity from the oil outlet channel into the hydraulic one-way valve 4; the grease is output to the hydraulic one-way valve 4 through the pressure of the piston rod 7, and the oil output is controlled to be 5-10ml at a time; the hydraulic one-way valve 4 inputs the grease into the oil supply pipe 14, and the grease enters the two oiling devices 13 through the oil supply main pipe and the oil supply branch pipe in turn, and then is output from the oil outlet of the oiling device 13 to the inner side of the railway curve line wheel and rail; when the locomotive vehicle passes by, under the action of grease adhesion, the wheel flange carries the grease and rolls forward, and is evenly coated on the wear position of the inner side of the wheel and rail to form a layer of oil film, which can effectively lubricate the wheel and rail of the curve line when the locomotive vehicle passes through the curve line, and the oiling length is ≥500m.

[0050] When the driving mechanism 8 reverses, the piston rod 7 retreats from the oil outlet channel to the oil storage cavity, and the first oil seal 9 retreats to the oil storage cavity along with the piston rod 7. The grease in the oil storage cavity refills the oil outlet channel under the action of gravity, facilitating the next output of grease. The oil storage amount of the oil storage tank 1 cannot be lower than the entrance of the oil storage cavity to avoid no-load operation of the equipment.

[0051] like Figure 5 , Figure 6As shown, the control cabinet 19 is arranged on one side of the wheel rail of the railway curve line, the oil pump assembly, the driving mechanism, the guide seat 17, the induction sheet 18, the solar controller of the battery panel 22, the extension limit switch SQ2, the retraction limit switch SQ3, the PLC, the main circuit breaker QF, the first intermediate relay K1, and the second intermediate relay K2 are respectively installed inside the cabinet of the control cabinet 19, the photoelectric induction switch SQ1, the conversion switch S1, the forward button S2, and the backward button S3 are respectively installed on the cabinet door of the control cabinet 19, the four DC12V batteries 21 are respectively installed in the drawers at the bottom of the control cabinet 19, and the two DC24V solar panels 20 are respectively fixedly connected to the outside of the control cabinet 19.

[0052] like Figure 7 As shown, the solar panel 20 and the battery 21 are respectively connected to the panel solar controller 22. The light energy collected by the solar panel 20 is converted into a 24V DC power supply to charge the battery 21 through the panel solar controller 22. The battery 21 provides a DC24V DC power supply to the drive motor 8 through the panel solar controller 22.

[0053] like Figure 8 As shown, the main circuit of the drive motor 8 is connected to the DC24V direct current power supply provided by the solar panel solar controller 22; the main circuit breaker QF is an air switch, and the main circuit breaker QF is connected to the main circuit; the main circuit includes a forward circuit and a reverse circuit, the normally open contact of the first intermediate relay K1 is connected to the forward circuit, and the normally open contact of the second intermediate relay K2 is connected to the reverse circuit.

[0054] The control circuit of the drive motor 8 is connected in parallel with the main circuit, and the PLC is connected to the control circuit. The model of the PLC is CP1E-N20DR-D. The PLC can control the forward or reverse rotation of the drive motor 8 through the first intermediate relay K1 and the second intermediate relay K2; the conversion switch S1, the forward button S2, the reverse button S3, the photoelectric sensor switch SQ1, the extension limit switch SQ2, and the retraction limit switch SQ3 are respectively connected to the input end of the PLC, and the coil of the first intermediate relay K1 and the coil of the second intermediate relay K2 are respectively connected to the output end of the PLC; the conversion switch S1 is used to switch between automatic mode and manual mode, the forward button S2 and the reverse button S3 are respectively used to control the drive mechanism to drive the piston rod 7 forward and backward, and the photoelectric sensor switch SQ1 is used to detect the locomotive vehicle passing through the detection area.

[0055] The working process of the automatic control system of the railway curved line wheel-rail lubrication device of the present invention is: first, press the SET button of the solar controller 22 of the battery panel to light up the load indicator light, and then close the main circuit breaker QF to power on the system; in the automatic control mode, turn the conversion switch S1 to the automatic position, when the locomotive vehicle passes through the detection area of ​​the photoelectric sensor switch SQ1, the photoelectric sensor switch SQ1 immediately outputs an ON signal to the input end of the PLC, and the PLC outputs a switch signal to energize the coil of the first intermediate relay K1, thereby closing the normally open contact of the first intermediate relay K1, driving the motor 8 to rotate forward, and driving the rack 15 to drive the piston rod 7 to extend forward; when the piston rod 7 reaches the extension limit position, the sensor plate 18 reaches directly below the extension limit switch SQ2, and the extension limit switch Switch SQ2 outputs an OFF signal to the input end of the PLC, and the PLC outputs a switching signal to de-energize the coil of the first intermediate relay K1, thereby disconnecting the normally open contact of the first intermediate relay K1 and stopping the drive motor 8; 5 minutes later, the locomotive vehicle has passed, and the PLC automatically outputs a switching signal to energize the coil of the second intermediate relay K2, thereby closing the normally open contact of the second intermediate relay K2, driving the motor 8 to reverse, and driving the rack 15 to drive the piston rod 7 to retreat backward; when the piston rod 7 reaches the retreat limit position, the induction plate 18 reaches directly below the retreat limit switch SQ3, and the retreat limit switch SQ3 outputs an OFF signal to the input end of the PLC, and the PLC outputs a switching signal to stop the drive motor 8, completing a flow of oil supply.

[0056] During debugging and testing, the manual mode is used to adjust the oiling amount. In the manual control mode, turn the conversion switch S1 to the manual position, start the forward and reverse buttons cyclically, check the oil output and action process of the oil pump assembly, and when the debugging and testing are completed, turn the conversion switch S1 back to the automatic position.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic control system for a wheel-rail lubrication device on a railway curved line, characterized in that: It includes an oil pump assembly, a drive mechanism, a guide seat (17), a sensor sheet (18), an extension limit switch, a retraction limit switch, a PLC, a first intermediate relay, a second intermediate relay, and a photoelectric sensor switch; The oil pump assembly comprises an oil storage tank (1), a guide sleeve (2), a hydraulic check valve (4), a piston rod (7), a drive motor (8), a first oil seal (9), an oil coating device (13), and an oil supply pipe (14); An oil storage cavity is provided inside the oil storage tank (1); the driving mechanism is capable of driving the piston rod (7) to reciprocate so as to squeeze the grease in the oil storage cavity out of the oil storage cavity; the sensing sheet (18) is fixedly connected to the driving mechanism or the piston rod (7); the extension limit switch corresponds to the extension limit position of the piston rod (7); and the retraction limit switch corresponds to the retraction limit position of the piston rod (7); the PLC is capable of controlling the driving mechanism to rotate forward or reverse; the sensing sheet (18) is used to limit the movement position of the piston rod (7) between the extension limit switch and the retraction limit switch; and the photoelectric sensing switch is used to detect the passage of a locomotive vehicle through a detection area; The driving mechanism comprises a driving motor (8), a driving rack (15), and a coupling (16); the driving motor (8) is a direct current reciprocating motor; the driving rack (15) is capable of reciprocating in the driving motor (8); and the driving rack (15) is fixedly connected to the piston rod (7) via the coupling (16); The guide seat (17) is fixedly connected to one side of the oil storage tank (1); the piston rod (7) and the drive rack (15) respectively penetrate into the internal cavity of the guide seat (17) from both sides of the guide seat (17); and the extension limit switch and the retraction limit switch are respectively fixedly connected to the top of the guide seat (17); The guide sleeve (2) is fixedly connected to the oil storage tank (1), and an oil outlet passage is provided inside the guide sleeve (2); the hydraulic one-way valve (4) is fixedly connected to the guide sleeve (2); the drive motor (8) is capable of driving the piston rod (7) to reciprocate between the oil storage cavity and the oil outlet passage; the first oil seal (9) is fixedly connected to the piston rod (7), and the first oil seal (9) is capable of squeezing grease in the oil storage cavity from the oil outlet passage into the hydraulic one-way valve (4) as the piston rod (7) moves; and the oil supply pipe (14) is connected between the oil outlet of the hydraulic one-way valve (4) and the oil inlet of the oil coating device (13).

2. The automatic control system for the railway curved line wheel-rail lubrication device according to claim 1, characterized in that: The automatic control system of the railway curved line wheel-rail lubrication device further comprises a conversion switch, a forward button, and a reverse button. The conversion switch is used to switch between an automatic mode and a manual mode. The forward button and the reverse button are used to control the drive mechanism to drive the piston rod (7) forward and backward, respectively. The conversion switch, the forward button, and the reverse button are respectively connected to the input end of the PLC.

3. The automatic control system for the railway curved line wheel-rail lubrication device according to claim 1, characterized in that: The automatic control system of the railway curved line wheel-rail lubrication device further comprises a solar power generation panel (20), a storage battery (21), and a solar panel solar controller (22); the solar power generation panel (20) and the storage battery (21) are respectively connected to the solar panel solar controller (22); and the main circuit of the driving mechanism is connected to a power supply provided by the solar panel solar controller (22).

4. The automatic control system for the railway curved line wheel-rail lubrication device according to claim 3, characterized in that: The automatic control system of the railway curved line wheel-rail lubrication device also includes a control cabinet (19), the control cabinet (19) is arranged on one side of the railway curved line wheel-rail, the oil pump assembly, the drive mechanism, the induction sheet (18), the solar panel solar controller (22), the extension limit switch, the retraction limit switch, the PLC, the first intermediate relay, and the second intermediate relay are all installed inside the cabinet body of the control cabinet (19), the photoelectric induction switch is installed on the cabinet door of the control cabinet (19), the storage battery (21) is installed in the drawer of the control cabinet (19), and the solar power generation panel (20) is fixedly connected to the outside of the control cabinet (19).

5. The automatic control system for the railway curved line wheel-rail lubrication device according to claim 1, characterized in that: The automatic control system of the railway curved line wheel-rail lubrication device further comprises a guide shaft (5) and a second oil seal (10); the guide sleeve (2) is fixedly connected to the side wall of the oil storage tank (1); the guide shaft (5) is located in the oil storage cavity and fixedly connected to the side wall of the oil storage tank (1) opposite to the guide sleeve (2); a guide hole is provided on the guide shaft (5); one end of the piston rod (7) passes through the side wall of the oil storage tank (1) and the guide hole in sequence and enters the oil storage cavity, and the other end is located outside the oil storage tank (1); the second oil seal (10) is fixedly connected to the guide hole, and the second oil seal (10) is sleeved on the outer ring of the piston rod (7) and blocks the gap between the piston rod (7) and the inner wall of the guide shaft (5).

6. The automatic control system for the railway curved line wheel-rail lubrication device according to claim 5, characterized in that: The automatic control system of the railway curved line wheel-rail lubrication device further comprises a third oil seal (11); the guide hole is stepped, and the cross-sectional size of the guide hole decreases step by step from the connecting side of the guide shaft (5) and the oil storage tank (1) to the other side; the second oil seal (10) is fixedly connected to the first stage of the guide hole close to the connecting side of the guide shaft (5) and the oil storage tank (1); the third oil seal (11) is fixedly connected to the second stage of the guide hole adjacent to the first stage, and the third oil seal (11) is sleeved on the outer ring of the piston rod (7) and blocks the gap between the piston rod (7) and the inner wall of the guide shaft (5).

7. The automatic control system for the railway curved line wheel-rail lubrication device according to claim 5, characterized in that: The automatic control system of the railway curved line wheel-rail lubrication device further comprises a first pressing plate (3) and a second pressing plate (6); one end of the guide sleeve (2) is located in the oil storage cavity, and the other end is located outside the oil storage tank (1); the center hole of the first pressing plate (3) is sleeved on the end of the guide sleeve (2) located outside the oil storage tank (1), and the first pressing plate (3) is fixedly connected to the oil storage tank (1) and the guide sleeve (2) in sequence through fasteners; the second pressing plate (6) is located on a side of the guide shaft (5) facing the guide sleeve (2), and the second pressing plate (6) is fixedly connected to the guide shaft (5) and the oil storage tank (1) in sequence through fasteners.

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