A multifunctional oil source system for intelligent rapid rail grinding machine stone control

Abstract

This invention belongs to the field of rail grinding technology and discloses a multi-functional oil source system for controlling the grinding stone of an intelligent high-speed rail grinding vehicle. The system includes an oil tank assembly, a main oil pump motor module, a DC motor oil pump module, a manual pump module, an accumulator assembly module, a first grinding stone pressurization control bypass valve group, a second grinding stone pressurization control bypass valve group, a grinding stone actuation cylinder, and a grinding stone actuation cylinder lifting and lowering control valve group. This invention, through a four-level redundant oil source design, ensures stable lifting and lowering of the grinding stone under various fault conditions; by setting up an accumulator assembly module integrating three functions—constant pressure maintenance during grinding, rapid grinding stone lifting, and ultimate emergency energy—multi-functional integration is achieved to adapt to different grinding stone actuation requirements; by setting up two sets of grinding stone pressurization control bypass valve groups, independent control and flexible switching between pressurization conditions, normal grinding stone lifting conditions, and rapid grinding stone lifting conditions are achieved.

Description

Technical Field

[0001] This invention belongs to the field of rail grinding technology, specifically relating to a multi-functional oil source system for controlling the grinding stone of an intelligent high-speed rail grinding vehicle. Background Technology

[0002] As the foundation of railway transportation, steel rails, under the constant heavy loads and high speeds of trains, develop various defects such as wavy wear, thickened edges, fish-scale patterns, surface cracks, and peeling. These defects not only worsen the wheel-rail interaction, affecting the smoothness and comfort of train operation, but can also endanger traffic safety in severe cases. Therefore, regular preventative and restorative grinding and maintenance of steel rails is a key technical means to ensure railway transportation safety and extend the service life of steel rails.

[0003] Intelligent high-speed rail grinding vehicles are essential equipment for track maintenance. They achieve efficient removal of defects and restoration of rail profiles by controlling the grinding stones to apply pressure and angle to the rail surface during operation. However, rail grinding operations are extremely complex and demanding: on the one hand, the grinding vehicle must possess extremely high operating efficiency to quickly complete grinding of large areas of track; on the other hand, track conditions (such as rail hardness, degree of defects, and curve radius) vary significantly during grinding, requiring the grinding pressure of the grinding stones to be adjusted precisely and consistently in real time according to the working conditions to ensure grinding quality and consistency.

[0004] While existing hydraulic systems for rail grinding vehicles can achieve basic lifting and pressurization functions for the grinding stone, they still have many shortcomings in handling complex working conditions and ensuring high reliability. For example, a single oil supply method often leads to unstable lifting and lowering of the grinding stone when the main pump or main power supply fails, causing equipment damage or even traffic accidents. At the same time, during long-term grinding and pressure maintenance, relying solely on the continuous oil supply from the oil pump to maintain pressure is not only energy-intensive and generates a lot of heat, but also makes it difficult to accurately control pressure fluctuations, affecting the grinding effect. In addition, for the adjustment of grinding pressure, traditional systems usually use relief valves or ordinary pressure reducing valves, which cannot achieve stepless, high-precision pressure setting and constant pressure control according to changes in road conditions, making it difficult to achieve the best grinding profile and surface quality.

[0005] Therefore, how to design a highly reliable, highly precise, energy-efficient grinding control oil source system to adapt to the complex and ever-changing operational needs of intelligent high-speed rail grinding vehicles has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-functional oil source system for the grinding stone control of an intelligent high-speed rail grinding vehicle, which aims to improve the system's reliability, the control accuracy of grinding pressure, and safety in emergency situations.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A multi-functional oil source system for controlling the grinding stone of an intelligent high-speed rail grinding vehicle is characterized by comprising an oil tank assembly, a main oil pump motor group module, a DC motor oil pump group module, a manual pump module, an accumulator assembly module, a first grinding stone pressurization control bypass valve group, a second grinding stone pressurization control bypass valve group, a grinding stone actuation cylinder, and a grinding stone actuation cylinder lifting control valve group. The input terminals of the main oil pump motor module, the DC motor oil pump module, and the manual pump module are connected to the oil tank assembly; the output terminals of the main oil pump motor module, the DC motor oil pump module, and the manual pump module are connected in parallel to the main oil supply circuit; the output terminal of the main oil pump motor module is connected to the input terminal of the accumulator assembly module through the filling oil circuit; the output terminal of the accumulator assembly module is connected to the main oil supply circuit through the first branch and to the first millstone pressurization control bypass valve group through the second branch; The output end of the main oil supply circuit is connected to the pressure oil port of the grinding stone actuation cylinder lifting control valve group; the return oil port of the grinding stone actuation cylinder lifting control valve group is connected to the oil tank assembly; the two working oil ports of the grinding stone actuation cylinder lifting control valve group are respectively connected to the rod chamber and the rodless chamber of the grinding stone actuation cylinder. The output end of the first grinding stone pressure control bypass valve group is connected to the rod chamber of the grinding stone actuation cylinder, the input end of the second grinding stone pressure control bypass valve group is connected to the rodless chamber of the grinding stone actuation cylinder, and the output end of the second grinding stone pressure control bypass valve group is connected to the oil tank assembly.

[0008] Furthermore, the main oil pump motor module includes a first motor, a variable pump, a proportional relief valve, a check valve, and a ball valve; the first motor is driven and connected to the variable pump; the oil inlet of the variable pump is connected to the oil tank assembly through the ball valve, and the oil outlet of the variable pump is connected to the main oil supply circuit through the check valve; the proportional relief valve is connected to the remote control port of the variable pump.

[0009] Furthermore, the DC motor oil pump assembly module includes a second motor, a fixed displacement pump, a second check valve, and a second ball valve; the second motor is driven and connected to the fixed displacement pump; the oil inlet of the fixed displacement pump is connected to the oil tank assembly through the second ball valve, and the oil outlet of the fixed displacement pump is connected to the main oil supply circuit through the second check valve.

[0010] Furthermore, the manual pump module includes a manual pump, a check valve three, and a ball valve three; the oil inlet of the manual pump is connected to the oil tank assembly through the ball valve three, and the oil outlet of the manual pump is connected to the main oil supply circuit through the check valve three.

[0011] Furthermore, the accumulator assembly module includes at least one accumulator, a one-way valve four, and a ball valve four; the inlet / outlet of the accumulator is connected to one end of the oil port of the ball valve four, and the other end of the oil port of the ball valve four is connected to the filling oil circuit, the first branch, and the second branch respectively; the one-way valve four is disposed on the pipeline between the filling oil circuit and the ball valve four.

[0012] Furthermore, the inlet / outlet of the accumulator is connected to the oil tank assembly via ball valve five, and safety valves are connected in parallel at both ends of ball valve five.

[0013] Furthermore, a pressure sensor is also installed on the pipeline between the inlet / outlet of the accumulator and the ball valve.

[0014] Furthermore, a ball valve six is ​​installed on the first branch.

[0015] Furthermore, a proportional pressure reducing valve is installed on the second branch.

[0016] Furthermore, a balance valve is provided between the two working oil ports of the grinding stone actuation cylinder lifting control valve assembly and the rod-side chamber and rodless chamber of the grinding stone actuation cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Four-level redundant oil source design for extremely high system reliability: This invention innovatively designs a four-level oil source guarantee system consisting of a main oil pump motor module, a DC motor oil pump module, a manual pump module, and an accumulator module. The main oil pump motor module serves as the main working oil source, the DC motor oil pump module is used for emergency response in case of main power supply or main oil pump failure, the manual pump module is used for emergency response in case of dual power source failure, and the accumulator module serves as the ultimate emergency energy source in case of system failure. Through a progressive emergency strategy, stable lifting and lowering of the grinding stone can be achieved under any complex fault conditions, greatly improving the operational safety and reliability of the grinding vehicle.

[0018] 2. Multifunctional integration of the accumulator module, achieving multiple uses in one device: The accumulator module in this invention integrates three major functions: "constant pressure maintenance during grinding," "rapid lifting of the grinding stone," and "ultimate emergency energy." During grinding operations, the accumulator module acts as an independent constant pressure source, supplying oil to the rod chamber of the grinding stone actuation cylinder. It compensates for cylinder displacement caused by internal leakage and grinding stone consumption in real time, maintaining constant grinding pressure and effectively reducing the number of start-stop cycles of the main oil pump, thus reducing energy consumption. When rapid grinding stone actuation is required, the accumulator module can instantly release a large flow of pressurized oil through the first branch to the rod chamber of the grinding stone actuation cylinder, achieving rapid lifting of the grinding stone. In the worst-case scenario where all power sources, including the main oil pump motor module, DC motor oil pump module, and manual pump module, fail, the accumulator module can serve as a last line of defense, using pre-stored high-pressure oil to drive the emergency lifting of the grinding stone, ensuring the safety of the vehicle and equipment.

[0019] 3. Independently set pressure control valve group for flexible control: This invention is equipped with a first grinding stone pressure control bypass valve group connected to the rod chamber of the grinding stone working cylinder and a second grinding stone pressure control bypass valve group connected to the rodless chamber of the grinding stone working cylinder. This allows for independent control and flexible switching between pressurization mode, normal grinding stone lifting mode, and rapid grinding stone lifting mode. During normal grinding, the first grinding stone pressure control bypass valve group supplies oil to the rod chamber to achieve grinding pressure. Simultaneously, when the grinding stone is lowered to contact the rail, the second grinding stone pressure control bypass valve group provides flexible loading. In emergency lifting, both the first and second grinding stone pressure control bypass valve groups are inactive, and their respective oil circuits are cut off. At this time, the accumulator module and the main oil pump motor module simultaneously supply oil, delivering pressurized oil to the rod chamber of the grinding stone working cylinder via the main oil supply circuit to achieve rapid grinding stone lifting. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 A system diagram of a multi-functional oil source system for controlling the grinding stone of an intelligent high-speed rail grinding vehicle provided by the present invention; The module comprises: 1-Fuel tank assembly; 2-Main oil pump motor unit module; 2.1-First motor; 2.2-Variable displacement pump; 2.3-Proportional relief valve; 2.4-Check valve one; 2.5-Ball valve one; 3-DC motor oil pump unit module; 3.1-Second motor; 3.2-Fixed displacement pump; 3.3-Check valve two; 3.4-Ball valve two; 4-Manual pump module; 4.1-Manual pump; 4.2-Check valve three; 4.3-Ball valve three; 5-Accumulator assembly module; 5.1 - Accumulator, 5.2 Check valve four, 5.3 Ball valve four, 5.4 Ball valve five, 5.5 Safety valve, 5.6 Pressure sensor, 6 First grinding stone pressurization control bypass valve group, 7 Second grinding stone pressurization control bypass valve group, 8 Grinding stone actuation cylinder, 9 Grinding stone actuation cylinder lifting control valve group, 10 Main oil supply circuit, 11 Filling oil circuit, 12 First branch, 13 Second branch, 14 Ball valve six, 15 Proportional pressure reducing valve, 16 Balance valve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0022] Please see Figure 1 This embodiment provides a multi-functional oil source system for controlling the grinding stone of an intelligent high-speed rail grinding vehicle. Its core lies in the combination of multi-level redundant oil source design and precision control valve group to achieve precise and reliable control of the lifting and pressurization of the grinding stone.

[0023] The system mainly consists of the following modules: oil tank assembly 1, main oil pump motor group module 2, DC motor oil pump group module 3, manual pump module 4, accumulator assembly module 5, first grinding stone pressurization control bypass valve group 6, second grinding stone pressurization control bypass valve group 7, grinding stone actuation cylinder 8, and grinding stone actuation cylinder lifting control valve group 9.

[0024] The input terminals of the main oil pump motor module 2, the DC motor oil pump module 3, and the manual pump module 4 are connected to the oil tank assembly 1; the output terminals of the main oil pump motor module 2, the DC motor oil pump module 3, and the manual pump module 4 are connected in parallel to the main oil supply circuit 10; the output terminal of the main oil pump motor module 2 is also connected to the input terminal of the accumulator assembly module 5 through the filling oil circuit 11; the output terminal of the accumulator assembly module 5 is connected to the main oil supply circuit 10 through the first branch circuit 12, and to the first grinding stone pressure control bypass valve group 6 through the second branch circuit 13.

[0025] The output end of the main oil supply circuit 10 is connected to the pressure oil port of the grinding stone action cylinder lifting control valve group 9; the return oil port of the grinding stone action cylinder lifting control valve group 9 is connected to the oil tank assembly 1; the two working oil ports of the grinding stone action cylinder lifting control valve group 9 are respectively connected to the rod chamber and the rodless chamber of the grinding stone action cylinder 8. The grinding stone action cylinder lifting control valve group 9 is used for grinding stone lifting and lowering switching control. The grinding stone action cylinder 8 is an actuator, and its piston rod directly drives the grinding stone device.

[0026] The output end of the first grinding stone pressurization control bypass valve group 6 is connected to the rod chamber of the grinding stone actuation cylinder 8. The first grinding stone pressurization control bypass valve group 6 is responsible for controlling the on / off of the oil circuit during grinding stone pressurization and constant pressure control. The input end of the second grinding stone pressurization control bypass valve group 7 is connected to the rodless chamber of the grinding stone actuation cylinder 8, and the output end of the second grinding stone pressurization control bypass valve group 7 is connected to the oil tank assembly. The second grinding stone pressurization control bypass valve group 7 is responsible for oil return and flexible loading control during grinding stone pressurization and constant pressure control. In this embodiment, the first grinding stone pressurization control bypass valve group 6 and the second grinding stone pressurization control bypass valve group 7 include multiple solenoid valves arranged in parallel.

[0027] Specifically, the oil tank assembly 1 serves as the hydraulic oil storage center of the entire system, used to store hydraulic oil, and is equipped with auxiliary components such as an air filter, level gauge, thermometer, and return oil filter (not shown in the figure) to ensure the cleanliness of the oil and the working stability of the system.

[0028] The main oil pump motor module 2 serves as the primary oil source for this system, providing power for the normal lifting and lowering of the grinding stone. Its specific structure includes: a first motor 2.1, a variable displacement pump 2.2, a proportional relief valve 2.3, a check valve 2.4, and a ball valve 2.5. The first motor 2.1 is connected to the variable displacement pump 2.2 and provides mechanical power to it; it typically uses an AC motor. The variable displacement pump 2.2 is a constant-pressure variable displacement piston pump with a remote control port. The oil inlet of the variable displacement pump 2.2 is connected to the oil tank assembly 1 via the ball valve 2.5. 2.5 is used to cut off the oil circuit during maintenance; the oil outlet of the variable pump 2.2 is connected to the main oil supply circuit 10 through the one-way valve 2.4. The function of the one-way valve 2.4 is to prevent the oil in the system from flowing back to the oil tank when the variable pump 2.2 stops working; the proportional relief valve 2.3 is connected to the remote control port of the variable pump 2.2, and the input current of the proportional relief valve 2.3 can be controlled by the controller program to steplessly adjust the output pressure of the variable pump 2.2, so as to realize stepless pressure regulation and stepless variable constant pressure control. The oil drain port of the proportional relief valve 2.3 is separately connected back to the oil tank assembly.

[0029] The DC motor oil pump module 3 serves as the first-level emergency oil source, used to control the lifting and lowering of the grinding stone and supply oil when the main power supply or main oil pump fails. Its specific structure includes: a second motor 3.1, a fixed displacement pump 3.2, a second check valve 3.3, and a second ball valve 3.4. The second motor 3.1 is driven by the fixed displacement pump 3.2. The second motor 3.1 is a DC motor powered by a battery, eliminating reliance on the main power grid. The fixed displacement pump 3.2 is driven by the second motor 3.1. Its inlet is connected to the oil tank assembly 1 via the second ball valve 3.4, and its outlet is connected to the main oil supply circuit 10 via the second check valve 3.3. The functions of the second ball valve 3.4 and the second check valve 3.3 in the DC motor oil pump module 3 are the same as those of the first ball valve 2.5 and the first check valve 2.4 in the main oil pump motor module 2.

[0030] The manual pump module 4 serves as a secondary emergency oil source, providing the pressure oil required for the millstone lifting control via manual operation when the electrical system or motor fails. Its specific structure includes: a manual pump 4.1, a three-way valve 4.2, and a three-way ball valve 4.3. The manual pump 4.1 is powered by a manually operated lever. The oil inlet of the manual pump 4.1 is connected to the oil tank assembly 1 via the three-way ball valve 4.3. The three-way ball valve 4.3 remains closed during normal operation and only opens when the manual pump 4.1 is needed to supply oil. The oil outlet of the manual pump 4.1 is connected to the main oil supply circuit 10 via the three-way valve 4.2. The functions of the three-way ball valve 4.3 and the three-way valve 4.2 in the manual pump module 4 are the same as those of the one-way ball valve 2.5 and the one-way valve 2.4 in the main oil pump motor assembly module 2.

[0031] The accumulator module 5 is the core multifunctional module of this system, possessing three major functions: pressure holding, rapid action, and emergency response. Its specific structure includes at least one accumulator 5.1, a four-way valve 5.2, and a four-way ball valve 5.3. In this embodiment, two accumulators 5.1 are provided, connected in parallel. These accumulators serve as storage containers for high-pressure oil, and the main oil pump motor module 2 draws oil from the oil tank assembly 1 through the filling oil circuit 11 to the accumulators 5.1. When grinding pressure holding, rapid action, or emergency oil supply is required, the accumulator 5.1 can release its stored oil to the grinding stone action cylinder 8 via the first branch 12 or the second branch 13. The inlet / outlet of the accumulator 5.1... One end of the ball valve 5.3 is connected to the oil port of ball valve 5.3. The other end of the ball valve 5.3 is connected to the filling oil circuit 11, the first branch circuit 12 and the second branch circuit 13 respectively. The ball valve 5.3 is a two-position two-way solenoid ball valve, which is used to control the oil replenishment and release of the accumulator module 5. The one-way valve 5.2 is set on the pipeline between the filling oil circuit 11 and the ball valve 5.3. The one-way valve 5.2 is used to disconnect the grinding pressurization constant pressure oil circuit from other oil circuits, reduce leakage, extend the replenishment interval of the accumulator module 5, reduce the number of starts and the start interval of the main oil pump motor module 2, improve the service life of the accumulator module 5, and reduce energy consumption.

[0032] Furthermore, the inlet / outlet of the accumulator 5.1 is connected to the oil tank assembly 1 via ball valve 5.4. Ball valve 5.4 is used to actively unload the pressure during maintenance of the accumulator module 5, allowing the oil to drain back into the oil tank. A safety valve 5.5 is connected in parallel across both ends of ball valve 5.4. The safety valve 5.5 is an overflow valve, serving as an overload protection device for the system. When an abnormality occurs in the system, the safety valve 5.5 can automatically open to overflow, preventing the main oil pump motor module 2 from continuously charging the accumulator 5.1, thus avoiding damage to the accumulator 5.1 and potential safety accidents. A pressure sensor 5.6 is also installed on the pipeline between the inlet / outlet of the accumulator 5.1 and ball valve 5.4. The pressure sensor 5.6 is used to monitor the oil pressure inside the accumulator module 5 in real time and feeds the pressure signal back to the controller, serving as a signaling element for charging control and pressure alarm.

[0033] In this embodiment, the maximum and minimum working oil pressures of the accumulator 5.1 are preset in the system controller. When the pressure sensor 5.6 detects that the actual oil pressure is lower than the minimum working oil pressure, it indicates that the oil stored in the accumulator 5.1 has been released to the lower limit. The system will immediately start the main oil pump motor module 2 and open the corresponding passage of the ball valve 5.3 to charge the accumulator 5.1 through the filling oil circuit 11. When the actual oil pressure rises to the maximum working oil pressure, the filling is stopped, the main oil pump motor module 2 stops filling and unloads and stands by, waiting for the next replenishment cycle.

[0034] It is important to emphasize that the minimum working oil pressure setting threshold must adhere to the following principles: 1. The oil stored in accumulator 5.1 must be sufficient to meet the grinding and pressure holding requirements; 2. When the oil in accumulator 5.1 is released to its limit, the remaining oil must still be sufficient to urgently lift the grinding stone to a safe position. This provides a final safety margin for emergency operations.

[0035] Furthermore, a ball valve 14 is installed on the first branch 12. The ball valve 14 is a two-position two-way solenoid ball valve, which is used to control the oil supply between the accumulator module 5 and the main oil supply line 10. A proportional pressure reducing valve 15 is installed on the second branch 13. Its oil inlet is connected to the accumulator module 5, its oil outlet is connected to the first grinding stone pressurization control bypass valve group 6, and its oil return port is separately connected back to the oil tank assembly 1. The proportional pressure reducing valve 15 can preset the corresponding oil output pressure value under different working conditions. When facing different road conditions, it can achieve the corresponding pressure output and ensure that the output pressure is constant to ensure the best grinding effect.

[0036] Furthermore, a balance valve 16 is provided between the two working oil ports of the grinding stone action cylinder lifting control valve group 9 and the rod chamber and rodless chamber of the grinding stone action cylinder 8. The balance valve 16 is used to ensure the stability of the grinding stone during the lifting and lowering process and to maintain the position after it is lifted into place.

[0037] In this embodiment, ball valve 1 (2.5), ball valve 2 (3.4), ball valve 3 (4.3), and ball valve 5 (5.4) are all ordinary on / off ball valves.

[0038] Based on the above structure, the multi-functional oil source system provided in this embodiment includes multiple working modes to adapt to different working conditions and fault states, as detailed below: (a) Normal grinding working mode In this mode, the main oil pump motor module 2 serves as the main oil source, responsible for the lifting and lowering of the grinding stone; the accumulator module 5 serves as an independent constant pressure source, responsible for pressurizing the grinding stone, and has a rapid lifting function.

[0039] Grinding stone lifting action: At this time, ball valve 1 2.5 is in the open state, and ball valves 2 3.4, 3 4.3, and 6 14 are all in the closed state. The first motor 2.1 is started, and the variable pump 2.2 starts to work. Its output pressure is set by the proportional relief valve 2.3 according to the controller instruction. The high-pressure oil flows from the oil tank assembly 1 through ball valve 1 2.5, variable pump 2.2, and check valve 1 2.4 into the main oil supply circuit 10, and reaches the pressure oil port of the grinding stone action cylinder lifting control valve group 9.

[0040] When the grinding stone needs to be lifted, the corresponding electromagnet of the grinding stone action cylinder lifting control valve group 9 is energized, and the pressurized oil flows out from the working oil port of the grinding stone action cylinder lifting control valve group 9 and enters the rodless chamber of the grinding stone action cylinder 8 through the balance valve 16. The oil in the rod chamber of the grinding stone action cylinder 8 flows back to the oil tank assembly 1 through the balance valve 16 and the return oil port of the grinding stone action cylinder lifting control valve group 9. The piston rod extends to realize the lifting of the grinding stone device.

[0041] When the grinding stone needs to be lowered, the corresponding electromagnet of the grinding stone action cylinder lifting control valve group 9 is energized, and the pressurized oil flows out from the working oil port of the grinding stone action cylinder lifting control valve group 9 and enters the rod chamber of the grinding stone action cylinder 8 through the balance valve 16; the oil in the rodless chamber of the grinding stone action cylinder 8 flows back to the oil tank assembly 1 through the balance valve 16 and the return oil port of the grinding stone action cylinder lifting control valve group 9, and the piston rod retracts to realize the lowering of the grinding stone device.

[0042] When the grinding stone is raised to the target position or lowered to the position, the grinding stone action cylinder lifting control valve group 9 immediately returns to the neutral position. At this time, the balance valve 16 uses its hydraulic control one-way function to reliably lock the two chambers of the grinding stone action cylinder 8. The main oil supply line 10 is completely cut off from the grinding stone action cylinder 8. The main oil pump motor module 2 can be unloaded and standby or switch to charging the accumulator assembly module 5. The position of the grinding stone is maintained entirely by the mechanical locking force of the balance valve 16, without the need for continuous oil supply from the main oil supply line.

[0043] Grinding stone pressurization action: When the grinding stone descends to contact the rail, the system enters the grinding stage. At this time, the grinding stone action cylinder lifting control valve group 9 returns to the neutral position, cutting off the oil supply from the main oil pump motor group module 2 to the grinding stone working cylinder 8; the first grinding stone pressurization control bypass valve group 6 and the second grinding stone pressurization control bypass valve group 7 are simultaneously turned on, and the grinding pressurization is supplied by the accumulator assembly module 5. The high-pressure oil flows out from the accumulator 5.1, passes through ball valve 4 5.3 and the second branch 13 to reach the proportional pressure reducing valve 15, and after pressure adjustment, it enters the rod chamber of the grinding stone action cylinder 8 through the first grinding stone pressurization control bypass valve group 6, forming continuous grinding pressure.

[0044] Rapid Lifting Action: During normal grinding, if it is necessary to quickly lift the grinding stone (e.g., to avoid obstacles or to end grinding), close the first grinding stone pressurization control bypass valve group 6 and the second grinding stone pressurization control bypass valve group 7. Ball valve 6 14 is energized and turned on. At the same time, the grinding stone action cylinder lifting control valve group 9 is switched to the rising position. At this time, the high-pressure oil stored in the accumulator 5.1 enters the main oil supply line 10 from the first branch 12 through ball valve 6 14. At the same time, the main oil pump motor module 2 also supplies oil to the rodless chamber of the grinding stone working cylinder 8 through the main oil supply line 10. The two work together to enable the grinding stone to achieve a very fast lifting speed, thus achieving rapid lifting.

[0045] (ii) Emergency mode for main pump failure (main oil pump motor module cannot work) When the main oil pump motor module 2 fails to supply oil due to mechanical or electrical failure (e.g., variable pump 2.2 is stuck or proportional relief valve 2.3 is out of control), the system switches to the first-level emergency mode.

[0046] After detecting a main pump fault signal, the system controller automatically starts the DC motor oil pump unit module 3.

[0047] At this time, ball valve 2.4 is in the open state, while ball valve 1.5, ball valve 3.3, and ball valve 6.14 are all in the closed state. The second motor 3.1 is powered by the battery and drives the metering pump 3.2 to work. The high-pressure oil flows from the oil tank assembly 1 through ball valve 2.4, metering pump 3.2, and check valve 2.3 into the main oil supply circuit 10. The pressure oil is then introduced into the rodless or rod chamber of the grinding stone action cylinder 8 through the grinding stone action cylinder lifting control valve group 9, thereby realizing the lifting of the grinding stone.

[0048] (III) Emergency mode for main power failure (both the main oil pump motor module and the DC motor oil pump module cannot work) When the main power supply fails, and the battery is also depleted or the motor fails, the system switches to the second-level emergency mode.

[0049] At this time, ball valve 3 4.3 is in the open state, while ball valve 1 2.5, ball valve 2 3.4, and ball valve 6 14 are all in the closed state. The operator manually draws oil from the oil tank assembly 1 and generates pressure by reciprocating the operating handle of the manual pump 4.1. The high-pressure oil flows from the oil tank assembly 1 through ball valve 3 4.3, manual pump 4.1, and check valve 3 4.2 into the main oil supply circuit 10. The pressurized oil then enters the rodless or rod chamber of the grinding stone actuation cylinder 8 through the grinding stone actuation cylinder lifting control valve group 9, thereby realizing the lifting and lowering of the grinding stone.

[0050] (iv) Full failure emergency mode (all power sources fail) In the most extreme case, if the main oil pump motor module 2, the DC motor oil pump module 3, and the manual pump module 4 are all unable to provide pressurized oil, this system has a last line of defense, namely the emergency oil supply function of the accumulator module 5.

[0051] At this point, all power sources have failed, but the accumulator 5.1 still contains oil, and according to the pressure threshold setting of the pressure sensor 5.6, the amount of oil stored is sufficient for an emergency boost.

[0052] When using this oil supply mode, ball valves 2.5, 3.4, and 4.3 are all closed. Operators must manually open ball valve 5.3 and ball valve 14 on the first branch 12, and manually operate the grinding stone actuation cylinder lifting control valve group 9. At this time, the high-pressure oil stored in accumulator 5.1 enters the first branch 12 through ball valve 5.3, and then enters the main oil supply line 10 through ball valve 14. Finally, the pressure oil enters the rodless or rod chamber of the grinding stone actuation cylinder 8 through the grinding stone actuation cylinder lifting control valve group 9, realizing the lifting of the grinding stone. Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional oil supply system for intelligent rapid rail grinding machine stone control, characterized in that, It includes an oil tank assembly (1), a main oil pump motor module (2), a DC motor oil pump module (3), a manual pump module (4), an accumulator assembly module (5), a first grinding stone pressurization control bypass valve group (6), a second grinding stone pressurization control bypass valve group (7), a grinding stone actuation cylinder (8), and a grinding stone actuation cylinder lifting control valve group (9). The input terminals of the main oil pump motor module (2), the DC motor oil pump module (3), and the manual pump module (4) are connected to the oil tank assembly (1); the output terminals of the main oil pump motor module (2), the DC motor oil pump module (3), and the manual pump module (4) are connected in parallel to the main oil supply circuit (10); the output terminal of the main oil pump motor module (2) is connected to the input terminal of the accumulator assembly module (5) through the filling oil circuit (11); the output terminal of the accumulator assembly module (5) is connected to the main oil supply circuit (10) through the first branch (12) and to the first grinding stone pressurization control bypass valve group (6) through the second branch (13); The output end of the main oil supply circuit (10) is connected to the pressure oil port of the grinding stone action cylinder lifting control valve group (9); the return oil port of the grinding stone action cylinder lifting control valve group (9) is connected to the oil tank assembly (1); the two working oil ports of the grinding stone action cylinder lifting control valve group (9) are respectively connected to the rod chamber and the rodless chamber of the grinding stone action cylinder (8). The output end of the first grinding stone pressure control bypass valve group (6) is connected to the rod chamber of the grinding stone actuation cylinder (8), the input end of the second grinding stone pressure control bypass valve group (7) is connected to the rodless chamber of the grinding stone actuation cylinder (8), and the output end of the second grinding stone pressure control bypass valve group (7) is connected to the oil tank assembly (1).

2. The multifunctional oil source system according to claim 1, characterized in that, The main oil pump motor module (2) includes a first motor (2.1), a variable pump (2.2), a proportional relief valve (2.3), a check valve (2.4), and a ball valve (2.5); the first motor (2.1) is driven and connected to the variable pump (2.2); the oil inlet of the variable pump (2.2) is connected to the oil tank assembly (1) through the ball valve (2.5), and the oil outlet of the variable pump (2.2) is connected to the main oil supply circuit (10) through the check valve (2.4); the proportional relief valve (2.3) is connected to the remote control port of the variable pump (2.2).

3. The multifunctional oil source system according to claim 1, characterized in that, The DC motor oil pump module (3) includes a second motor (3.1), a fixed displacement pump (3.2), a second check valve (3.3), and a second ball valve (3.4); the second motor (3.1) is driven and connected to the fixed displacement pump (3.2); the oil inlet of the fixed displacement pump (3.2) is connected to the oil tank assembly (1) through the second ball valve (3.4), and the oil outlet of the fixed displacement pump (3.2) is connected to the main oil supply circuit (10) through the second check valve (3.3).

4. The multifunctional oil source system according to claim 1, characterized in that, The manual pump module (4) includes a manual pump (4.1), a three-way valve (4.2), and a three-way ball valve (4.3); the oil inlet of the manual pump (4.1) is connected to the oil tank assembly (1) through the three-way ball valve (4.3), and the oil outlet of the manual pump (4.1) is connected to the main oil supply circuit (10) through the three-way valve (4.2).

5. The multifunctional oil source system according to claim 1, characterized in that, The accumulator assembly module (5) includes at least one accumulator (5.1), a four-way valve (5.2), and a four-way ball valve (5.3); the inlet / outlet of the accumulator (5.1) is connected to one end of the four-way ball valve (5.3), and the other end of the four-way ball valve (5.3) is connected to the filling oil circuit (11), the first branch (12), and the second branch (13), respectively; the four-way valve (5.2) is located on the pipeline between the filling oil circuit (11) and the four-way ball valve (5.3).

6. The multifunctional oil source system according to claim 5, characterized in that, The inlet / outlet of the accumulator (5.1) is also connected to the oil tank assembly (1) through ball valve five (5.4), and safety valves (5.5) are connected in parallel at both ends of the ball valve five (5.4).

7. The multifunctional oil source system according to claim 6, characterized in that, A pressure sensor (5.6) is also installed on the pipeline between the inlet / outlet of the accumulator (5.1) and the ball valve (5.4).

8. The multifunctional oil source system according to any one of claims 1 to 7, characterized in that, A ball valve six (14) is installed on the first branch (12).

9. The multifunctional oil source system according to any one of claims 1 to 7, characterized in that, A proportional pressure reducing valve (15) is installed on the second branch (13).

10. The multifunctional oil source system according to any one of claims 1 to 7, characterized in that, A balance valve (16) is provided between the two working oil ports of the grinding stone action cylinder lifting control valve group (9) and the rod chamber and rodless chamber of the grinding stone action cylinder (8).

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