Rail transit oil change vehicle

Abstract

The utility model provides a rail transit oil changing vehicle, which belongs to the technical field of rail oil changing vehicles and comprises a shell, a base is mounted at the bottom of the shell, universal wheels and driving wheels are mounted at the bottom of the base, a new oil tank and a waste oil tank are respectively mounted on the base, and a support is mounted on the base and positioned between the new oil tank and the waste oil tank. A storage battery is installed on the lower side of the support, a first oil pump and a second oil pump are installed on the upper side of the support, a suspension frame is further fixed to the position, located on the upper side of the support, of the top of the inner wall face of the shell, a pipe coiling device is rotationally arranged on the suspension frame, and two inserting openings are further formed in the shell. A new oil gun and a waste oil gun are inserted into the two inserting openings respectively, a handle and a display screen are further arranged on the upper side of the shell, a driving mechanism is installed on the handle, and an oil pumping hard pipe is installed on the side of the shell.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit oil change vehicle technology, specifically relating to a rail transit oil change vehicle. Background Technology

[0002] With the rapid development of urban rail transit, the maintenance needs of subway trains are increasing, and gearbox lubrication and maintenance is a crucial aspect of ensuring safe train operation. Gearbox oil change operations require efficient, precise, and environmentally friendly equipment, but existing oil change vehicles have many shortcomings in practical applications and cannot meet the high standards required by the rail transit sector.

[0003] Insufficient measurement accuracy:

[0004] Currently, during gearbox oil changes, manual control or ordinary flow meters are typically used for adding and removing oil, resulting in significant measurement errors (usually exceeding ±200ml). Since subway gearboxes require extremely precise lubrication, the insufficient precision of existing equipment may lead to poor lubrication or excessive oil levels, affecting train operation safety.

[0005] The operation is complex and inefficient.

[0006] Traditional oil change carts often use mechanical buttons or simple displays, resulting in cumbersome operation procedures that rely heavily on operator experience. In subway maintenance scenarios, the workspace is typically narrow and the environment complex. The inconvenience of operating existing equipment leads to low oil change efficiency, making it difficult to meet the high-efficiency maintenance requirements of the rail transit sector.

[0007] Poor mobility and adaptability:

[0008] In subway maintenance scenarios, oil change carts need to move flexibly within confined spaces. However, traditional oil change carts have limited movement control methods, typically relying on manual pushing or simple directional control, which is inconvenient and inefficient. Furthermore, existing equipment has poor adaptability to high-viscosity gear oils, easily leading to problems such as unstable flow rates and inaccurate metering during transport.

[0009] In summary, existing oil change vehicles have significant shortcomings in terms of metering accuracy, ease of operation, intelligent functions, mobility, and environmental friendliness, making it difficult to meet the high standards required for gearbox oil change operations in the rail transit sector. Therefore, there is an urgent need for a high-precision, intelligent, easy-to-operate, and environmentally friendly rail transit oil change vehicle to improve oil change efficiency, ensure train operation safety, and reduce maintenance costs. Summary of the Invention

[0010] This utility model provides a rail transit oil change vehicle, which aims to solve the problems of insufficient metering accuracy, complicated operation and low efficiency, poor mobility and adaptability of existing oil change vehicles.

[0011] This utility model embodiment provides a rail transit oil change vehicle, including a housing, a base installed at the bottom of the housing, casters and drive wheels installed at the bottom of the base, a standing plate fixed to one side of the base, a new oil tank and a waste oil tank respectively installed on the base, a bracket installed on the base between the new oil tank and the waste oil tank, a battery installed on the lower side of the bracket, a first oil pump and a second oil pump installed on the upper side of the bracket, a suspension frame fixed to the top of the inner wall of the housing above the bracket, a hose reel rotatably installed on the suspension frame, two sockets provided on the housing, a new oil gun and a waste oil gun respectively inserted into the two sockets, a flow meter installed at the nozzle of the new oil gun, a handle and a display screen on the upper side of the housing, a drive mechanism installed on the handle, and an oil suction pipe installed on the side of the housing. The drive wheels, the first oil pump, the second oil pump, the new oil gun, the waste oil gun, the display screen and the drive mechanism are all controlled by a control circuit board.

[0012] Furthermore, the housing has a groove between the new oil tank and the waste oil tank, and a filter funnel is provided on the top of the waste oil tank, with the filter funnel extending to the outside of the groove.

[0013] By adopting the above technical solution, waste oil is poured from the filter funnel into the waste oil tank, which can filter the waste oil discharged into the waste oil tank and prevent too many impurities from entering the waste oil tank, thereby affecting the second oil pump's ability to extract and discharge the waste oil from the waste oil tank.

[0014] Furthermore, an oil replenishment hose is also installed on the other side of the groove.

[0015] By adopting the above technical solution, one end of the oil replenishment hose located inside the housing is connected to the three-way valve, and the other end extending out of the housing can be connected to the oil extraction rigid pipe. At the same time, the other end of the oil extraction rigid pipe can be inserted into the standard oil tank. At this time, pressing the new oil gun switch can draw oil from the standard oil tank and deliver it to the new oil tank.

[0016] Furthermore, a three-way valve is provided at the upper end of the new oil tank.

[0017] By adopting the above technical solution, one end of the new oil gun located in the housing is connected to the hose on the hose reel, the other end of the hose on the hose reel is connected to one end of the first oil pump, the other end of the first oil pump is connected to one passage of the three-way valve, the other passage of the three-way valve is connected to the oil replenishment hose, the last passage of the three-way valve is directly connected to the second oil pump, and the other end of the second oil pump is directly connected to the waste oil tank.

[0018] Furthermore, the housing is provided with a filler port between the two ports, the filler port is connected to the new fuel tank, and a metal detection sensor is provided on the inlet wall of the filler port.

[0019] By adopting the above technical solution, after the new oil gun is pulled out, it is then inserted into the oil filling port. At this time, the metal detection sensor on the inlet wall of the oil filling port can detect that the new oil gun has been inserted into the oil filling port. Only then can the first oil pump be started, and the new oil gun can then add oil to the new oil tank.

[0020] Furthermore, the drive mechanism includes a remote lever fixed to a handle on one side by bolts, a warning light is installed on the front side of the housing, and both the drive wheel and the warning light are controlled by the remote lever and the control circuit board.

[0021] By adopting the above technical solution, the staff can stand on the stand board, hold the handles with both hands, and control the drive wheel to move by using the joystick on the handle. This achieves the purpose of controlling the movement of the refueling truck by controlling the circuit board and the joystick. At the same time, the warning light can serve as a warning and reminder.

[0022] Furthermore, both the new oil tank and the waste oil tank are equipped with liquid level sensors, which are electrically connected to the control circuit board.

[0023] By adopting the above technical solution, the level sensor can monitor the level in the new fuel tank and the waste fuel tank in real time. When the level in the new fuel tank is too low due to insufficient fuel, the level sensor in the new fuel tank can transmit a low level electrical signal to the control circuit board, which then displays the low level on the screen to inform the user. When refueling the new fuel tank, if the fuel level reaches the maximum threshold set by the level sensor, the new fuel nozzle will be forcibly shut off, and refueling will stop. Similarly, when the level in the waste fuel tank reaches the maximum threshold set by the level sensor, the level sensor in the waste fuel tank can transmit a high level electrical signal to the control circuit board, which will also display the high level on the screen to inform the user.

[0024] Furthermore, protective plates are hinged to both sides of the housing.

[0025] By adopting the above technical solution, the hinged protective plate can be opened, thereby allowing for the repair and replacement of the internal mechanisms of the housing.

[0026] The beneficial effects of this utility model are as follows:

[0027] 1. This utility model, through the setting of a liquid level sensor, can monitor the oil level in the new oil tank and the waste oil tank to prevent oil spillage and dry pump operation, thereby improving the accuracy of oil changing.

[0028] 2. This utility model, through the setting of a metal detection sensor, can detect the position of the oil gun and the status of the equipment to prevent misoperation, realize automated control, and improve safety.

[0029] 3. The drive mechanism of this utility model, through the control of the joystick and the control circuit board, allows the user to drive the drive wheel to move the refueling truck by means of the joystick, which greatly improves the ease of operation.

[0030] 4. This utility model, through the setting of control circuit board, display screen, new oil gun and waste oil gun, can achieve fully automatic control, improve operation efficiency and accuracy, record information such as oil filling amount, oil extraction amount, liquid level status in real time, realize digital management of oil change process, touch screen display screen, user-friendly operation interface, reduce learning cost and improve operation convenience.

[0031] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0033] Figure 1 This is a top view of the right side of an embodiment of the present invention;

[0034] Figure 2 This is a top view of the internal right side structure of an embodiment of the present invention;

[0035] Figure 3 This is a top view of the internal left side structure of an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the process structure of an embodiment of the present utility model;

[0037] Reference numerals: 1. Housing; 1001. Groove; 1002. Filter funnel; 1003. Oil replenishment hose; 1004. Filler port; 1005. Metal detection sensor; 1006. Liquid level sensor; 2. Base; 3. Casters; 4. Drive wheel; 5. Standing plate; 6. New oil tank; 6001. Three-way valve; 7. Waste oil tank; 8. Bracket; 9. Battery; 10. First oil pump; 11. Second oil pump; 12. Suspension bracket; 13. Hose reel; 14. Socket; 15. New oil gun; 16. Waste oil gun; 17. Handle; 18. Display screen; 19. Drive mechanism; 1901. Remote control; 1902. Warning light; 20. Oil extraction hose; 21. Control circuit board; 22. Flow meter. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0039] Reference Figure 1-4 This utility model embodiment proposes a rail transit oil change vehicle, including a housing 1. The surface of the housing 1 is equipped with an emergency stop switch and a key switch. The emergency stop switch uses a Schneider XB2-BS542C, and the key switch uses an ABB1SFA616105R1100. The user can start the entire oil change vehicle using the key switch. The oil change vehicle is also equipped with a horn. Protective plates are hinged to both sides of the housing 1. These hinged protective plates can be opened to allow for maintenance and replacement of the internal mechanisms of the housing 1. A base 2 is installed at the bottom of the housing 1. Universal wheels 3 and drive wheels 4 are installed at the bottom of the base 2. The drive wheel motor in the drive wheel 4 uses a Maxon EC-i 40-70W brushless DC motor, and its controller uses a Maxon EPOS4. The 50 / 5 system uses a CAN bus (CANopen protocol) to communicate with the PLC, transmitting speed commands and status feedback. A standing plate 5 is fixed to one side of the base 2. A new oil tank 6 and a waste oil tank 7 are installed on the base 2. A bracket 8 is installed between the new oil tank 6 and the waste oil tank 7 on the base 2. A battery 9 is installed on the lower side of the bracket 8. A first oil pump 10 and a second oil pump 11 are installed on the upper side of the bracket 8. Both the first oil pump 10 and the second oil pump 11 are Grundfos ALPHA2 25-60 180 frequency converter pumps, using an RS-485 interface and Modbus. The RTU communication protocol communicates with the PLC to receive start / stop and flow control commands. A suspension bracket 12 is fixed to the top of the inner wall of the housing 1, above the support 8. A hose reel 13 is rotatably mounted on the suspension bracket 12, with a flexible hose wound around it for oil delivery. The housing 1 also has two inlets 14, into which a new oil gun 15 and a waste oil gun 16 are inserted respectively. A flow meter 22 is installed at the nozzle of the new oil gun 15. The flow meter 22 is a Krohne OPTIMASS 7400 (0-1M) flow meter. 3 / h), the communication interface is a 4-20mA analog signal: connected to the PLC analog input module to monitor the flow rate in real time. The new oil nozzle 15 can be inserted into the subway gearbox to refuel the gearbox, and can also be inserted into the refueling port 1004 of the refueling truck to refuel the truck. The waste oil nozzle 16 can be inserted into an empty standard waste oil container to extract and discharge the waste oil from the waste oil tank 7. The oil bases of the new oil nozzle 15 and the waste oil nozzle 16 are equipped with touch switches, which are compatible with existing gas stations. The oil gun is the same as the oil gun, so I won't go into too much detail here. The housing 1 is provided with a groove 1001 between the new oil tank 6 and the waste oil tank 7. The top of the waste oil tank 7 is provided with a filter funnel 1002, which extends to the outside of the groove 1001. Waste oil is poured from the filter funnel 1002 into the waste oil tank 7, which can filter the waste oil discharged into the waste oil tank 7. Then, the waste oil gun 16 is inserted into the empty waste oil barrel, and the waste oil in the waste oil tank 7 is extracted and discharged by the second oil pump 11.

[0040] Reference Figure 1-4 On the other side of the groove 1001, an oil replenishment hose 1003 is also installed. The remaining space in the groove 1001, excluding the space for the filter funnel 1002 and the oil replenishment hose 1003, is a tool storage compartment where tools can be placed. An oil extraction hose 20 is installed on the side of the housing 1; the oil extraction hose 20 can be pulled out. A three-way valve 6001 is located at the upper end of the new oil tank 6. One end of the new oil gun 15 located in the housing 1 is connected to the hose on the hose reel 13. The other end of the hose on the hose reel 13 is connected to one end of the first oil pump 10. The other end of the first oil pump 10 is connected to one passage of the three-way valve 6001. Another passage is connected to the oil replenishment hose 1003. The last passage of the three-way valve 6001 is directly connected to the second oil pump 11. The other end of the second oil pump 11 is directly connected to the waste oil tank 7. One end of the oil replenishment hose 1003 located inside the housing 1 is connected to the three-way valve 6001. One end extending out of the housing 1 can be connected to the oil extraction hard pipe 20. At the same time, the other end of the oil extraction hard pipe 20 can be inserted into the standard oil drum. When it is necessary to add oil to the new oil tank 6, the new oil gun 15 is pulled out and inserted into the filling port 1004. At this time, the new oil gun 15 can draw oil from the standard oil drum through the first oil pump 10 and deliver it to the new oil tank 6.

[0041] Reference Figure 1-4The housing 1 has a filler port 1004 located between the two ports 14. The filler port 1004 is connected to the new oil tank 6. A metal detection sensor 1005 is installed on the inlet wall of the filler port 1004. The metal detection sensor 1005 adopts an Omron E2E-X5ME1 proximity switch and uses an NPN output (24V DC) communication interface. It is connected to a PLC digital input module (such as 6ES7 321-1BH02-0AA0). After the new oil gun 15 is pulled out, it is inserted into the filler port 1004. At this time, the metal detection sensor 1005 on the inlet wall of the filler port 1004 can detect that the new oil gun 15 has been inserted into the filler port 1004. Only then can the first oil pump 10 be started, and the new oil gun 15 can then add oil to the new oil tank 6.

[0042] Reference Figure 1-4 The upper side of the housing 1 is also equipped with a handle 17 and a display screen 18. The display screen 18 adopts Weintek MT8071iE, which uses RS-485 interface and Modbus RTU communication protocol to communicate with PLC and display operation interface and status information. A drive mechanism 19 is installed on the handle 17. The drive mechanism 19 includes a remote lever 1901 fixed to one side of the handle 17 by bolts. A warning light 1902 is installed on the front side of the housing 1. The drive wheel 4 and the warning light 1902 are both controlled by the remote lever 1901 and the control circuit board 21. When the operator stands on the standing plate 5 and holds the handle 17 with both hands, he can control the drive wheel 4 to move by the remote lever 1901 on the handle 17. This achieves the purpose of controlling the movement of the refueling truck by controlling the control circuit board 21 and the remote lever 1901. At the same time, the warning light 1902 can serve as a warning reminder.

[0043] Reference Figure 1-4Both the new oil tank 6 and the waste oil tank 7 are equipped with level sensors 1006. The level sensors 1006 utilize E+H FMR50-AAAGJAAA radar level gauges, employing a 4-20mA analog signal communication interface connected to a PLC analog input module (such as 6ES7331-7KF02-0AB0). The level sensors 1006 are electrically connected to the control circuit board 21. The level sensors 1006 can monitor the liquid levels in the new oil tank 6 and waste oil tank 7 in real time. When the oil level in the new oil tank 6 is low, the level sensor 1006 transmits a low-level electrical signal to the control circuit board 21, which then displays the signal on the display screen 18. The system uses voice prompts to inform the user that when refueling the new fuel tank 6, if the fuel level reaches the maximum threshold set by the level sensor 1006, the first oil pump 10 will be forcibly shut down, and no more fuel will be added to the new fuel tank 6. Similarly, when the waste oil level in the waste oil tank 7 reaches the maximum threshold set by the level sensor 1006, the level sensor 1006 in the waste oil tank 7 will transmit a high level electrical signal to the control circuit board 21. The control circuit board 21 will then display this signal on the display screen 18 and inform the user via voice prompts, so that the user can promptly drain the waste oil from the waste oil tank 7.

[0044] Reference Figure 1-4The drive wheel 4, the first oil pump 10, the second oil pump 11, the new oil gun 15, the waste oil gun 16, the display screen 18, and the drive mechanism 19 are all controlled by the control circuit board 21, which uses a Siemens S7-1200 system. The PLC (6ES7214-1AG40-0XB0) has several interfaces on its control circuit board 21, such as a panel communication interface, which provides communication and power support to the control panel and displays the operation interface on the display screen 18; a voice speaker interface, which can broadcast voice messages based on the operation interface on the display screen 18; a joystick 1901 communication interface, which allows the user to control the drive wheel 4 to move the refueling truck via the joystick 1901; a pump communication interface, which communicates with the oil pump to control its operating status and can be used for precise refueling or waste oil extraction; and a new oil nozzle 15 return interface (waste oil nozzle 16 return interface), used for refueling new oil, with a positioning signal used to determine whether the oil nozzle is inserted into the gearbox or returned to the insertion port 14 (used for extracting waste oil, with the positioning signal used for...). The system includes: a 1) determining whether the oil gun is inserted into the waste oil tank or returned to the socket 14; a metal detection interface for detecting the position of the oil gun or metal parts of the equipment; a metering interface for detecting the oil level in the new oil tank 6 via the level sensor 1006 to ensure sufficient oil quantity (and for detecting the oil level in the waste oil tank 7 via the level sensor 1006 to prevent waste oil overflow); and an emergency stop switch interface for emergency shutdown of all equipment to ensure operational safety. In general, the system includes: RS-485 for connecting touchscreens and pumps; CAN bus for communication with the drive wheel 4 controller; digital input / output for connecting the emergency stop switch, key switch, and metal sensor switch; and analog input for connecting the level sensor 1006 and flow meter 22. The battery 9 provides power to all electrical equipment.

[0045] The specific implementation method is as follows: During use, the refueling trolley is started via the key switch. The liquid levels of the new oil tank 6 and the waste oil tank 7 can be viewed on the display screen 18. When the liquid level in the new oil tank 6 is too low, the display screen 18 will show an alarm message and simultaneously issue a warning via the horn. At this time, the user pulls out the new fuel nozzle 15 and inserts it into the refueling port 1004. The metal detection sensor 1005 detects that the new fuel nozzle 15 has been inserted, and the first oil pump 10 starts. The suction hose 20 is connected to the replenishment hose 1003, and the suction hose 20 is inserted into a standard oil container containing oil. The three-way valve 6001 is opened to the direction of replenishing new oil. At this time, the first oil pump 10 can draw oil from the standard oil container into the new oil tank 6. When the liquid level reaches the highest threshold level set by the level sensor 1006, the first oil pump 10 stops. The new fuel nozzle 15 is then pulled out and inserted back into the connector 14. This process is repeated when refueling the subway gearbox. Insert the new oil nozzle 15 into the gearbox and open the valve to the quantitative refueling direction. Set the refueling amount through the display screen 18. The flow meter 22 at the nozzle of the new oil nozzle 15 can monitor the refueling amount in real time. After the set amount is reached, the first oil pump 10 is stopped, realizing automated quantitative refueling with an overall error of less than 1%. When changing waste oil, pour the waste oil from the filter funnel 1002 into the waste oil tank 7. When the liquid level sensor 1006 in the waste oil tank 7 detects that there is too much waste oil, the display screen 18 and the horn will prompt and issue an alarm message. At this time, pull out the waste oil nozzle 16 and insert it into an empty standard oil drum. Start the second oil pump 11 to extract the waste oil. The whole process is highly automated. At the same time, when moving the refueling truck, the user stands on the standing plate 5 and holds the handle 17 to drive the drive wheel 4 through the control circuit board 21 and the joystick 1901 to move the refueling truck. It is very convenient.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rail transit oil change vehicle, comprising a shell (1), characterized in that, A base (2) is installed at the bottom of the housing (1). A caster wheel (3) and a drive wheel (4) are installed at the bottom of the base (2). A standing plate (5) is fixed on one side of the base (2). A new oil tank (6) and a waste oil tank (7) are installed on the base (2). A bracket (8) is installed on the base (2) between the new oil tank (6) and the waste oil tank (7). A battery (9) is installed on the lower side of the bracket (8). A first oil pump (10) and a second oil pump (11) are installed on the upper side of the bracket (8). A suspension bracket (12) is also fixed on the top of the inner wall of the housing (1) above the bracket (8). A rotating device is mounted on the suspension bracket (12). There is a hose reel (13), and the housing (1) is also provided with two sockets (14), in which a new oil gun (15) and a waste oil gun (16) are respectively inserted. A flow meter (22) is provided at the nozzle of the new oil gun (15). A handle (17) and a display screen (18) are also provided on the upper side of the housing (1). A drive mechanism (19) is installed on the handle (17). An oil extraction tube (20) is installed on the side of the housing (1). The drive wheel (4), the first oil pump (10), the second oil pump (11), the new oil gun (15), the waste oil gun (16), the display screen (18), and the drive mechanism (19) are all controlled by a control circuit board (21).

2. The rail transit oil change vehicle according to claim 1, characterized in that: The housing (1) is provided with a groove (1001) between the new oil tank (6) and the waste oil tank (7), and a filter funnel (1002) is provided on the top of the waste oil tank (7), the filter funnel (1002) extending to the outside of the groove (1001).

3. The rail transit oil change vehicle according to claim 2, characterized in that: An oil replenishment hose (1003) is also installed on the other side of the groove (1001).

4. The rail transit oil change vehicle according to claim 1, characterized in that: The upper end of the new oil tank (6) is equipped with a three-way valve (6001).

5. A rail transit oil change vehicle according to claim 1, characterized in that: The housing (1) is provided with a filler port (1004) between the two ports (14). The filler port (1004) is connected to the new oil tank (6). A metal detection sensor (1005) is provided on one side of the filler port (1004).

6. A rail transit oil change vehicle according to claim 1, characterized in that: The drive mechanism (19) includes a remote lever (1901) fixed to a handle (17) on one side by bolts. A warning light (1902) is installed on the front side of the housing (1). The drive wheel (4) and the warning light (1902) are both controlled by the remote lever (1901) and the control circuit board (21).

7. A rail transit oil change vehicle according to claim 1, characterized in that: Both the new oil tank (6) and the waste oil tank (7) are equipped with a liquid level sensor (1006), which is electrically connected to the control circuit board (21).

8. A rail transit oil change vehicle according to claim 1, characterized in that: Protective plates are hinged to both sides of the housing (1).

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