Automatic lubricating device for locomotive wheel

Abstract

The application relates to the field of high-speed rail locomotives, and particularly discloses an automatic lubricating grease filling device for a locomotive wheel, which comprises a mobile vehicle body, a lubricating grease supply unit, a power unit and a lubricating grease conveying unit. The lubricating grease supply unit comprises an oil tank box with a vibration and heating composite module, and the flowability of high-viscosity lubricating grease is significantly improved through the combination of vibration and heating. The power unit comprises a motor-driven oil pump. The lubricating grease conveying unit comprises a pipeline connecting the oil tank and the oil pump and an oil gun equipped with replaceable oil injection nozzles, and different oil injection nozzles are replaced to adapt to various types of locomotive wheel injection oil interfaces. The device is also provided with a control unit, an encoder and a display control terminal, and can realize accurate measurement based on the number of rotations, real-time data display and remote start-stop control. The utility model realizes the mechanization, intellectualization and quantization of the filling process, solves the problems of low efficiency, great waste and high labor intensity of traditional manual filling, and is suitable for lubricating grease maintenance operation of various types of locomotive wheel spraying systems.

Description

Technical Field

[0001] This utility model relates to the field of high-speed rail locomotives, specifically to an automatic grease-spraying device for locomotive wheels. Background Technology

[0002] The locomotive wheel spraying device, also known as the locomotive wheel flange grease spraying lubrication system, primarily functions to reduce friction and wear between the wheel flange and the rail. During locomotive operation, it automatically and periodically sprays a small amount of lubricating grease onto the contact area between the wheel flange and the rail, preventing excessive wheel friction resistance and the resulting screeching sound. It is one of the key components ensuring the smooth and safe operation of the locomotive. In routine maintenance, lubricating grease needs to be added to its oil reservoir periodically. However, wheel-sprayed grease generally has thick and viscous physical properties, resulting in extremely poor flowability.

[0003] In addition, the wheel spray lubricating greases used in the various types of locomotives repaired by the maintenance workshop are of different brands and specifications, and their original packaging varies greatly in size, weight, and oil outlet design.

[0004] Currently, the grease filling work is entirely done manually. Due to the different train models, the shape of the grease filling port is also different. Operators need to manually squeeze, scrape, and pour the grease, which not only results in huge labor intensity and low work efficiency, but also causes serious grease waste. As a result, some grease will stick to tools and gloves or drip onto the ground. According to the actual statistics of the workshop, if it is done manually, the grease filling operation of a single locomotive takes an average of about 50 minutes, and the average grease waste is more than 2 kilograms. Utility Model Content

[0005] To address the problem that manual application of lubricating grease is difficult and wasteful due to the different shapes of grease filling ports on trains, this application provides an automatic grease filling device for locomotive wheels.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: An automatic grease filling device for locomotive wheels includes a mobile vehicle body and an interface for connecting to an external power source for transmitting electricity. The mobile vehicle body has a seat, on which a grease supply unit, a power unit, and a grease delivery unit are integrated. The grease supply unit includes an oil tank with a vibration heating composite module. The power unit includes an oil pump driven by a motor. The grease delivery unit includes an oil inlet pipe connected between the oil tank and the oil pump inlet, and an oil outlet pipe with one end connected to the oil pump outlet. The other end of the oil outlet pipe is connected to an oil gun equipped with a replaceable grease nozzle.

[0007] Furthermore, the vibration heating composite module is located below the oil tank body and is divided into a heating layer and a vibration layer. The heating layer is embedded with heating wires, and the vibration layer is equipped with at least one vibrator. The heating layer and the vibration layer are physically isolated.

[0008] Furthermore, the oil gun consists of an oil gun tube and an oil nozzle, and the oil gun tube and the oil nozzle are connected in a sealed manner by threaded engagement.

[0009] Furthermore, the oil nozzle is a flat tip with an elongated oval outlet section at its end.

[0010] Furthermore, the oil nozzle is a diffuser-type flat nozzle with a fan-shaped outlet section at the end.

[0011] Furthermore, the oil nozzle is a tubular head, with a slender tubular outlet section at its end.

[0012] Furthermore, the tank body has a cover, and the cover is provided with a mounting seat for installing an external pressure tank; the mounting seat has a guide channel for introducing the medium inside the pressure tank into the tank body to pressurize the grease.

[0013] Furthermore, the mobile vehicle body also includes a control unit and an encoder for detecting the number of rotations of the motor. The signal input terminal of the control unit is connected to the encoder signal, and the output terminal is electrically connected to the motor. The control unit is configured to control the on / off state of the motor based on the encoder signal.

[0014] Furthermore, the control unit is electrically connected to the vibration heating composite module and is configured to control the start and stop states of the vibration heating composite module.

[0015] Furthermore, a display control terminal with bidirectional communication connection to the control unit is installed on the oil gun tube, used to: receive and display the real-time oil filling amount and theoretical oil filling amount sent by the control unit; and send command signals to the control unit in response to user operation; The control unit is configured to receive and respond to the command signal to control the operating status of the motor and vibration heating composite module.

[0016] The instruction signal includes at least one of a pause instruction, an emergency stop instruction, and a resume operation instruction.

[0017] Beneficial effects: This utility model provides an automatic grease filling device for locomotive wheel sprayers. Through a vibration heating composite module, it effectively solves the flowability problem of high-viscosity greases. It employs a motor-driven pumping system combined with an integrated display and control terminal, replacing inefficient traditional manual operation. A dedicated pressurization interface is located on the top of the housing, allowing for the connection of an external pressure source to forcibly clear blocked grease and ensure continuous operation when grease solidifies and causes pipe blockage. The device is equipped with quick-change, dedicated grease filling nozzles for locomotive wheel sprayers. Operators only need to select the standardized nozzles corresponding to the locomotive's wheel spray system to achieve precise grease filling. This device reduces the grease filling time for a single locomotive to less than 10 minutes, reduces grease contamination and waste by 2 kg, and saves approximately 480 yuan per application. Based on 1400 applications per year, it is estimated that costs can be saved by over 670,000 yuan, significantly reducing maintenance costs and labor intensity, making it suitable for large-scale application in locomotive maintenance workshops. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model; Figure 2 This is a schematic diagram of the oil nozzle structure according to the first embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model; Figure 4 This is a schematic diagram of the specific structure of the third embodiment of the present utility model; Figure 5 This is a schematic diagram of the specific structure of the fourth embodiment of the present utility model; Figure 6 This is a schematic diagram of the specific structure of the fifth embodiment of the present utility model; Figure 7 This is a partial structural schematic diagram of the sixth embodiment of the present utility model.

[0020] Figure 8 This is a schematic diagram of the overall structure of the sixth embodiment of this utility model.

[0021] In the diagram: 1-Mobile vehicle body; 2-Universal casters; 3-Vibration heating composite module; 4-Directional casters; 5-Oil pump; 6-Coupling; 61-Encoder; 7-Motor; 8-Oil gun; 81-Oil gun pipe; 82-Oil nozzle; 821-Conical head; 822-Flat nozzle; 823-Expanding flat nozzle; 824-Tube head; 83-Display screen; 831-Pause button; 832-Emergency stop button; 833-Resume button; 9-Oil pipe; 10-Oil tank body; 11-Control unit; 111-External power connection interface; 12-Main switch; 13-Holding part; 14-Seat; 15-Lid; 151-Mounting base; 16-Pressure tank. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Example 1: like Figure 1 As shown in the figure, this utility model discloses the specific structure of an automatic grease filling device for locomotive wheels, including a mobile vehicle body 1 and an external power supply connection interface 111 for transmitting electricity. The mobile vehicle body 1 has a seat 14, on which a grease supply unit, a power unit, and a grease conveying unit are integrated. The grease supply unit includes an oil tank 10 with a vibration heating composite module 3. The power unit includes an oil pump driven by a motor 7. The grease conveying unit includes an oil inlet pipe connected between the oil tank 10 and the oil inlet of the oil pump 5, and an oil outlet pipe with one end connected to the oil outlet of the oil pump 5. The other end of the oil outlet pipe is connected to an oil gun 8 equipped with a replaceable grease nozzle 82.

[0029] Terminology Explanation: The locomotive wheel spraying system mentioned in this utility model is an industry term widely used in railway locomotive systems. Its complete technical connotation is a locomotive wheel flange grease spraying lubrication system. This term refers to a special device that is fixedly installed on the locomotive bogie. Its core function is to automatically spray lubricating grease into the contact area between the wheel flange and the rail through nozzles located near the wheel and rail during locomotive operation, thereby effectively reducing wheel-rail friction and wear, reducing operating energy consumption and noise.

[0030] In this technical field, all professionals, including those from locomotive depots, maintenance workshops, and equipment manufacturers, use the highly condensed term "wheel spray" for efficient and unambiguous technical communication. This term is understandable to those skilled in the art. The automatic refueling device described in this utility model is designed to replenish and maintain the oil storage unit of the locomotive wheel spray system.

[0031] Working Principle: During operation, the operator first adds grease to the oil tank 10 and moves the mobile vehicle 1 to the maintenance area. The external power connection interface 111 connects to the equipment power supply. After starting the device, the vibration heating composite module 3 integrated below the oil tank 10 works first. Its internal vibrator generates high-frequency mechanical vibration to shake the high-viscosity grease evenly, promoting the grease to flow to the oil pump. At the same time, the heating wire heats the grease, reducing its viscosity and improving its fluidity. Subsequently, the motor 7 in the power unit starts, driving the oil pump 5 to operate. The oil pump 5 draws the activated grease from the oil tank 10 into the pump chamber through the oil inlet pipe, and the grease is delivered to the oil gun 8 through the oil outlet pipe.

[0032] It is understood that the vibration and heating functions in the aforementioned vibration heating composite module can be achieved by existing vibratory machines or heaters, which will not be elaborated here.

[0033] Technical effects: This utility model utilizes a movable vehicle body 1, with a vibration heating composite module 3 integrated with the oil tank body 10, effectively overcoming the technical challenge of poor fluidity of high-viscosity greases. It also provides the necessary conditions for mechanized conveying. A complete filling system is constructed by integrating a motor 7, an oil pump 5, a continuous oil pipe 9, and an oil gun 8 specially designed for the locomotive wheel spray grease filling environment. Users only need to select and install the corresponding oil nozzle 82 according to the model of the locomotive wheel spray nozzle to be maintained, and then start the device to achieve precise docking and filling of the locomotive wheel spray nozzle. This solves the problems of difficult filling and waste caused by manual operation.

[0034] It is worth noting that the reason for adopting the replaceable oil nozzle 82 of oil gun 8, instead of directly replacing the entire oil gun 8, is based on the actual operating conditions at the aircraft maintenance site.

[0035] In practical applications, the oil pipe 9 is usually made of soft material. It is fastened and sealed to the tail interface of the oil gun 8 by hose clamp or clamp. If the oil gun is replaced as a whole, the hose clamp must be loosened and retightened each time it is replaced. This is not only cumbersome and time-consuming, but also prone to wear on the interface due to frequent disassembly and assembly, which affects the reliability of the seal and causes grease leakage. This design only requires unscrewing the old nozzle, replacing it with a new nozzle and tightening it, without affecting the sealing performance.

[0036] Example 2: This embodiment is a further improvement on the first embodiment.

[0037] like Figure 4 As shown, in this embodiment, there is an oil outlet pipe with one end connected to the oil outlet of the oil pump 5, and an oil gun 8 connected to the other end through the oil gun pipe 81. The conical head 821 of the oil gun 8's nozzle 82 is replaced with a flat nozzle 822.

[0038] Specifically, the flat nozzle 822 includes, from back to front, a cylindrical connecting part coaxially arranged with the oil gun pipe 81 and a duckbill-shaped flat oil outlet. The outer diameter of the connecting part is equal to the outer diameter of the oil gun pipe 81. After the two are joined, the outer contours are smoothly transitioned and connected by threaded engagement. The flat oil outlet gradually shrinks forward from the connecting part and is flattened into shape, with the whole having a stepless transition. Its end outlet is an elongated oval slit. This structure is mainly suitable for extending into the narrow and flat oil injection port of the locomotive wheel.

[0039] Example 3: like Figure 4 As shown, in this embodiment, the difference from the first and second embodiments is that the conical head 821 of the oil nozzle 82 of the oil gun 8 is replaced with a diffuser-type flat nozzle 823.

[0040] Specifically, the internal flow channel of the diffuser flat nozzle 823 is gradually flattened and widened from its connecting end to its outlet end, and finally its end oil outlet is constructed as a narrow fan-shaped structure.

[0041] The diffuser-type flat nozzle 823 is screwed into the interface at the front end of the oil gun tube 81 via a standard thread at its connecting end. When pressurized grease enters the diffuser-type flat nozzle 823 from the circular flow channel of the oil gun tube 81, the special internal cavity structure constrains and guides the flow path of the grease, forcing the grease flow to change from its original cylindrical shape to a flat sheet shape, and finally being concentrated and ejected from the fan-shaped outlet section.

[0042] Due to its inherent structure, this embodiment produces a wide-coverage, flat fan-shaped grease stream, with a coverage width much greater than that of conventional round-hole nozzles. It is particularly suitable for injecting grease into wide working surfaces, effectively improving grease coverage efficiency and performance, and avoiding problems such as repeated filling or uneven lubrication caused by a narrow spray range.

[0043] Example 4: like Figure 5 As shown, in this embodiment, the difference from the first, second, and third embodiments is that the conical head 821 of the oil nozzle 82 of the oil gun 8 is replaced with a tubular head 824.

[0044] Specifically, the tubular head 824 has an overall slender tubular structure, and its oil outlet is a slender tubular outlet section.

[0045] The connection between the tubular head 824 and the oil gun tube 81 is designed with a round-headed connector. This round-headed structure is screwed into the interface at the front end of the oil gun tube 81 via internal threads. This design not only provides sufficient structural strength to withstand the torque during operation and avoids direct stress on the slender tube body, but its regular cylindrical outer surface also makes it easier for the operator to grip and tighten, ensuring the sealing and reliability of the connection. A sealing ring is provided at the interface to prevent high-pressure grease leakage.

[0046] When performing refueling operations, the slender tubular structure, specially designed for the locomotive wheel spraying environment, can easily reach narrow oil inlets or oil points at special angles that traditional oil nozzles cannot reach, enabling precise refueling of complex structures and hidden lubrication points such as locomotive wheel spraying systems.

[0047] Example 5: As a preferred embodiment of the present invention, this embodiment is further optimized based on the first, second, third and fourth embodiments.

[0048] like Figure 6 As shown, the main difference is that the back panel of the seat 14 is equipped with a control unit 11 and an encoder 61 in the oil pump unit.

[0049] Specifically, the mobile vehicle body 1 of this utility model is L-shaped, and a vertical back plate is provided at one end of the seat 14. A gripping part 13 is formed at the upper part of the back plate, and a moving wheel is provided at the lower part of the seat. The moving wheel is divided into a universal wheel 2 and a directional wheel 4. The universal wheel 2 is configured to rotate freely around its axis to realize the flexible steering of the mobile vehicle body 1. The directional wheel 4 is configured to keep its rotation direction consistent with the forward direction of the vehicle body to provide stable straight-line travel guidance during the movement process.

[0050] The control unit 11 uses an industrial-grade programmable logic controller (PLC) or an embedded microcontroller (MCU) as its core processing component. Its housing surface integrates a power interface, a communication interface, status indicator lights, and a human-machine interface panel. The control unit 11 internally includes a central processing unit, a memory, and a data input / output module. The memory pre-stores the grease filling control program for the locomotive and theoretical filling volume parameters for various locomotive models. It also has internal input and output ports.

[0051] The control unit 11 is fastened to the back plate of the seat 14 by bolts. Its power interface is directly connected to the external power connection interface 111. The output port is used to switch the power supply circuit of the motor 7 on and off to realize the electrical control of the equipment start and stop. The input port is used to receive external signals. All components together constitute the centralized control system of the device.

[0052] The encoder 61 is coaxially connected to the output shaft of the motor 7 via the coupling 6, which detects the rotational motion of the motor shaft in real time and generates a real-time motor rotation count signal. The signal input terminal of the control unit 11 is connected to the encoder 61 to receive the real-time motor rotation count data. The control unit 11 has pre-stored the oil pump single-revolution displacement parameters. Based on the received motor rotation count data and the pre-stored single-revolution displacement parameters, it calculates the current amount of grease added in real time, thereby achieving accurate measurement and automatic control of the filling process.

[0053] Specifically, in this embodiment, the control unit 11 adopts a metering control strategy based on the detection of the number of rotations.

[0054] By receiving the motor rotation count data transmitted by encoder 61 in real time, the total number of rotations of motor 7 is multiplied by the fixed displacement parameter of motor 7 per rotation to accurately calculate the total amount of grease added, and the motor's operating status is controlled by comparing the result with the preset theoretical amount of grease added.

[0055] Taking the refueling operation of the Harmony 1 electric locomotive (HXD1) as an example, the specific implementation process is as follows: Parameter setting stage: Operators select the HXD1 model via the human-machine interface. Control unit 11 automatically retrieves the pre-stored theoretical injection volume parameter: 1500 ml The system is loaded with the calibrated oil pump displacement parameters: 5 ml / rpm. Execution phase of refueling: Motor 7 starts running, and encoder 61 detects the number of motor rotations in real time. Control unit 11 performs real-time calculations according to the following formula: Real-time dispensing volume = Number of rotations × 5 ml / revolution The human-machine interface screen dynamically displays real-time injection volume data. Automatic control stage: When the real-time dispensing volume reaches 500 ml (corresponding to 100 rotations), When the real-time dispensing volume reaches 1000 ml (corresponding to 200 rotations), When the real-time dispensing volume reaches 1500 ml (corresponding to 300 rotations), The control unit 11 immediately sends a stop command to the motor 7, the filling process is terminated, and the status indicator light flashes to indicate this.

[0056] The control unit 11 is also electrically connected to the vibration heating composite module 3. The start and stop of the vibration heating composite module 3 are controlled by the control unit 11. As this is prior art, it will not be described in detail here. This embodiment constructs a metering and control system by adding a control unit 11 to the surface of the seat back panel and integrating an encoder 61 into the oil pump unit. This improvement upgrades the device from purely mechanical operation to intelligent control, achieving the technical effect of automatically calculating the amount of oil added by detecting the number of motor rotations in real time, intelligently comparing preset values, and controlling the start and stop of the motor, further realizing the automation of the operation and reducing oil waste.

[0057] It is understood that the parameter settings and electrical signal conversion involved in this embodiment are inherent to the hardware module itself. The innovation of this utility model lies in the hardware connection structure and coordinated cooperation of the control unit 11, encoder 61, motor 7 and oil pump 5, which constructs a hardware trigger chain and ultimately realizes the automated mechanical control effect of the locomotive wheel grease injection process.

[0058] Example 6; To improve the user experience, this embodiment is further improved based on the fifth embodiment.

[0059] like Figure 8 As shown, the top of the oil tank body 10 is provided with an openable cover 15. The cover 15 is preferably connected by a hinge and can be equipped with a locking mechanism to ensure sealing during operation. The cover 15 is provided with a mounting base 151 specifically for installing an external pressure tank 16. The mounting base 151 is preferably a standard threaded interface or a quick-connect pneumatic connector. Its structure matches the output port of the external pressure tank 16. One end passes through the cover 15 and extends into the receiving cavity of the oil tank body 10. When the oil tank body 10 is closed and the external pressure tank 16 is installed on the mounting base 151 and opened, the high-pressure medium inside, such as compressed air or inert gas, can be introduced into the sealed space of the oil tank body 10 through the guide channel, thereby applying pressure to the lubricating grease in the cavity, forcing the grease to quickly enter and fill the oil inlet pipe. This not only effectively prevents the grease from solidifying in the pipeline, but also clears the grease that has accumulated in the oil pipe 9 after use.

[0060] like Figure 7 As shown, an interactive display and control terminal is fixedly mounted on the outer surface of the oil gun tube 81. This terminal includes a housing, a display screen 83, a control button group, a wireless communication module, and a built-in battery. The protective housing is fixedly connected to the oil gun tube 81 via a mounting bracket. The display screen 83 is embedded in the surface of the protective housing, the control button group is located on the side of the protective housing, and the wireless communication module and battery are encapsulated inside the protective housing. The display screen 83 and the control button group are electrically connected to the wireless communication module via internal wiring. The battery supplies power to all electrical components via a power supply line. The wireless communication module establishes a wireless communication connection with the control unit 11, forming a data interaction channel.

[0061] Specifically, the wireless communication module continuously receives the real-time oil filling amount and the theoretical oil filling amount from the control unit 11, and transmits the data to the display screen 83 for display.

[0062] In this embodiment, since there is oil in the working environment, the control button group on the display control terminal is set as physical buttons. The control button group is configured as a pause button 831, an emergency stop button 832, and a resume button 833 to remotely control the grease delivery and vibration heating composite module 3.

[0063] The control buttons of the display control terminal are electrically connected to the wireless communication module through internal circuitry. When an operator triggers a control button, the generated command signal is transmitted to the wireless communication module via a signal transmission line. Upon receiving the command signal, the wireless communication module immediately transmits the command signal to the control unit 11 through the established wireless communication link.

[0064] The control unit 11 receives command signals from the wireless communication module in real time and processes the received signals. Based on the specific type of the command signal, the control unit 11 executes the corresponding control logic: When a pause command is received, the control unit immediately interrupts the operation of motor 7 and vibration heating composite module 3 and maintains the current state; When an emergency stop command is received, the control unit immediately cuts off the power supply circuit of motor 7 and vibration heating composite module 3; When a recovery command is received, the control unit reconnects the power supply circuit of motor 7 and vibration heating composite module 3 and resumes normal operation.

[0065] In this embodiment, the control button is set as a single-command physical button because of the special working environment of the maintenance site. Since operators often need to wear heavy gloves and there are many tools and equipment on site, physical isolation can effectively avoid the risk of accidental touch. Even when wearing gloves, the operation can be clearly distinguished, thereby reducing the probability of misoperation in complex working environments.

[0066] For comprehensive consideration of equipment safety operation, a manually operated main switch 12 is added to the housing of the control unit 11. The main switch 12 adopts a mechanical switch design, with OFF and ON markings on its surface, and is connected in series to the main power supply circuit of the control unit 11.

[0067] When the equipment is in transport, storage, or non-operational status, the operator can completely cut off the power supply to the control unit 11 by switching the main switch 12 to the OFF position. This prevents accidental power-on or self-starting caused by internal circuit failures, program errors, or external interference in the control unit 11, thereby enhancing the safety and reliability of the entire device.

[0068] The core invention of this embodiment is the addition of a display control terminal for the oil gun 8. Its innovation lies in the direct integration of the display control function into the oil gun operation end, forming a visual intelligent oil injection terminal.

[0069] Firstly, in terms of structural design, the display control terminal adopts a modular integration scheme, compactly arranging the display screen 83, control buttons, and communication module on the surface of the oil gun tube 81 to form a human-machine interaction operation center. This layout allows the operator to directly view the data on the display screen 83 while holding the oil gun 8 to perform oil filling operations, and to know the current amount of oil added, the theoretical amount of oil to be added for this oil filling, as well as the current heating and vibration intensity of the vibration heating composite module 3 on the oil. By operating the control buttons, a visible and controllable operating experience is achieved.

[0070] Secondly, in terms of functionality, the terminal features specially designed single-command physical emergency stop, pause, and resume buttons, which can be accurately distinguished by touch even when operating with gloves in an oily environment, effectively preventing accidental operation. Most importantly, this embodiment solves several key technical problems in the lubricant spraying operation on locomotive wheels: During normal maintenance, operators need to frequently travel between the equipment and the lubrication point to check the lubrication status. In case of an emergency, this can easily delay the processing time. The display and control terminal located near the lubrication nozzle 8 can provide a rapid response capability in emergency situations, and the emergency stop / pause / resume function allows the operation to be interrupted or continued.

[0071] This innovative design, which moves the display control function to the work terminal, improves the safety, accuracy, and ease of operation of the refueling operation, and represents a technological advancement of this embodiment compared to the prior art.

[0072] The specific workflow of this utility model is as follows: The workflow of this device begins with the operator pushing the mobile cart to the locomotive maintenance position and connecting it to the power supply. Then, the operator selects and assembles the grease injector according to the signal of the locomotive to be maintained and turns on the main switch, allowing the entire device to receive power. The operator selects the model on the human-machine interface of the control unit and starts the equipment. The vibration heating module activates the grease first, followed by the motor-driven oil pump to begin injecting grease. During this process, the encoder monitors the number of motor rotations in real time. The control unit calculates the real-time amount of grease added based on the number of motor rotations and wirelessly transmits the data to a display terminal near the grease gun for visual display. When the injected amount reaches the set value, the equipment automatically stops. If necessary, the operator can intervene using the emergency stop, pause, or resume buttons on the terminal.

[0073] Finally, after the filling is completed, the equipment issues a prompt, and the operator disconnects the connection and tidies up the equipment to complete the operation.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic grease-spraying device for locomotive wheels, comprising a mobile vehicle body (1) and an interface (111) for connecting to an external power source for transmitting electricity, characterized in that: The mobile vehicle body (1) has a seat (14), on which a grease supply unit, a power unit and a grease delivery unit are integrated. The grease supply unit includes an oil tank (10) with a vibration heating composite module (3). The power unit includes an oil pump (5) driven by a motor (7). The grease delivery unit includes an oil inlet pipe connected between the oil tank (10) and the oil inlet of the oil pump (5), and an oil outlet pipe with one end connected to the oil outlet of the oil pump (5). The other end of the oil outlet pipe is connected to an oil gun (8) equipped with a replaceable oil nozzle (82).

2. The automatic grease filling device for locomotive wheels according to claim 1, characterized in that: The vibration heating composite module (3) is located below the oil tank body (10) and is divided into a heating layer and a vibration layer. The heating layer is embedded with an electric heating wire, and the vibration layer is equipped with at least one vibrator. The heating layer and the vibration layer are physically isolated.

3. The automatic grease filling device for locomotive wheels according to claim 2, characterized in that: The oil gun (8) is divided into an oil gun tube (81) and an oil nozzle (82). The oil gun tube (81) and the oil nozzle (82) are connected in a sealed manner by threaded engagement.

4. The automatic grease filling device for locomotive wheels according to claim 3, characterized in that: The oil nozzle (82) is a flat nozzle (822) with an elongated oval outlet section at its oil outlet end.

5. The automatic grease filling device for locomotive wheels according to claim 3, characterized in that: The oil nozzle (82) is a diffuser-type flat nozzle (823), and its end oil outlet has a fan-shaped outlet section.

6. The automatic grease filling device for locomotive wheels according to claim 3, characterized in that: The oil nozzle (82) is a tubular head (824), and its end oil outlet is a slender tubular outlet section.

7. The automatic grease filling device for locomotive wheels according to claim 1, characterized in that: The oil tank body (10) has a tank cover (15), and the tank cover (15) is provided with a mounting seat (151) for installing an external pressure tank (16); the mounting seat (151) has a guide channel for introducing the medium inside the pressure tank (16) into the oil tank body (10) to pressurize the grease.

8. The automatic grease filling device for locomotive wheels according to claim 3, characterized in that: The mobile vehicle body (1) also includes a control unit (11) and an encoder (61) for detecting the number of rotations of the motor (7). The signal input terminal of the control unit (11) is connected to the signal of the encoder (61), and the output terminal is electrically connected to the motor (7). The control unit (11) is configured to control the power on / off state of the motor based on the signal of the encoder (61).

9. The automatic grease filling device for locomotive wheels according to claim 8, characterized in that: The control unit (11) is electrically connected to the vibration heating composite module (3) and is configured to control the start and stop states of the vibration heating composite module (3).

10. The automatic grease filling device for locomotive wheels according to claim 9, characterized in that: The oil gun tube (81) is equipped with a display control terminal that is bidirectionally connected to the control unit (11) for: receiving and displaying the real-time oil filling amount and theoretical oil filling amount sent by the control unit (11); and sending instruction signals to the control unit (11) in response to user operation. The control unit (11) is configured to receive and respond to the command signal to control the operating status of the motor (7) and the vibration heating composite module (3); The instruction signal includes at least one of a pause instruction, an emergency stop instruction, and a resume operation instruction.

Images